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This page contains project topics/write-up for ELECTRICAL/ELECTRONIC/TELECOM/ POWER ENGINEERING department. Hyclassproject's aim of providing all these research materials is to reduce the stress of moving from one school library to another all in the name of searching for project topics and materials. We are not encouraging any form of PLAGIARISM. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works. According to Austin Kleon "All creative work builds on what came before", and according to Bishop Dr. David Oyedepo "You cannot be a Reference without having References".

Below are the continued list of our avaliable project topics/write-up. To view or download the complete work on each of the following works, click on the topic or on the useful links menu at the bottom part of this page:

0001]. DESIGN AND CONSTRUCTION OF TEMPERATURE CONTROL AUTOMATIC SWITCH : This project is titled design and construction of a temperature control automatic switch. It is designed to control electric appliances such as electric kettle, oven, incubator, or lamp through the variation  of temperature range (0°C -100°C) which must be set by the user or operator. And this can be achieved by the use of temperature sensor known as THERMISTOR. This thermistor is a temperature control device with a high or low resistance value which can go high or low when the temperature is increased or reduced depending on the type.
 In this project, 100C is used as a set temperature. And this device is design in such a way that when the set temperature of the device is reached, the relay of the device will automatically triggered and will maintain this stage until when the temperature of the sensor is dropped 97°C, and then it will return normally open stage in order to maintain that 100°C. And this automatic feature is controlled by a high current relay....{read more and download full material}

0002]. DESIGN AND CONSTRUCTION OF AN OSCILLATING STAGE OF A 3.5KVA INVERTER : An oscillator is an electronic device that converts dc power supply to ac power having the desired characteristics.
Power inverters come in a wide variety of power capacities and they are distinguished primarily by the wave shape (sine or cosine, square and others as shown in the figure 2) of the alternating current they produced from the oscillator employed for the design. The major types are: 1. Pure sine-wave inverter, 2. Square wave inverter, and 3. Modified sine-wave inverter. The basis of the oscillation in an electric circuit is the positive feedback.
Oscillator falls into the following classes; Positive feedback (RC and LC networks), Negative resistance, and Relaxation type. The discussion of the oscillators in this paper will be focused on the low frequency oscillators that can be employed for the design of power inverters operating at 50/60Hz....{read more and download full material}

0003]. FOOT STEP POWER GENERATION USING PIEZOELECTRIC SENSOR:This work is on foot step power generation using piezoelectric sensor. In this foot step power generation project is designed to convert foot step, walking and running energy into electrical energy. It is used to generate electricity from by walking or running on foot step. The demand of electrical energy is increasing day by day. But power generation conventional resources are now not enough for total demand of electrical energy. Therefore many researchers and engineers are working on non conventional ways of electrical power generation. Foot step power generation system is also a non conventional electrical energy production system. It converts mechanical energy of foot steps into electrical energy by using transducers. It can be implemented on roads, bus stations and many public places. Foot step power generation system basically converts force energy of foot into electrical energy by using piezoelectric sensor. Piezoelectric sensor is transducer which converts force energy into electrical energy....{read more and download full material}

0004]. DESIGN AND CONSTRUCTION OF SMART STREET LIGHTING SYSTEM USING ULTRASONIC SENSOR : Generally, street lights are switched ON for whole night and during the day, they are switched off. But during the night time, street lights are not necessary if there is no traffic. Saving of this energy is very important factor these days as energy resources are getting reduced day by day. Alternatives for natural resources are very less and our next generations may face lot of problems because of lack of these natural resources. Smart street lighting system works automatically to regulate light intensity, the operating time and detect objects....{read more and download full material}

0005]. DESIGN AND CONSTRUCTION OF A BLUETOOTH SPEAKER UNIT: Bluetooth stereo audio system—one that’s also fairly low-cost—for outdoor use. This device provide the easiest way to play music off your smartphone to a speaker unit. The system, which maintains 20-WRMS output power, can be controlled either with a handset containing a Bluetooth connection and a music player or with an Apple iPod model. Bluetooth technology, created in the late 1990s, is widely used to establish a short-range wireless connection between two handheld mobile devices. A Bluetooth setup also makes it possible to transfer a stereo audio signal from a handheld device to a speaker unit . Today’s Bluetooth headsets operate under the Bluetooth Class 2 specification with 2.5-mW (4 dBm) transmission power. A Bluetooth Class 2 module’s transmission range extends to about 10 meters....{read more and to download full material}

0006]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER WITH BATTERY FULL CUT-OFF AND DIGITAL DISPLAY : This project is on a 12 volts automatic battery charger with charging progress   and charging level indicator. An automatic battery charger is an acid battery charger that is designed to charge any acid battery.
In this work, a voltage sensor circuit is incorporated to sense the voltage of the battery under charge. The charger has the ability to automatically switched OFF when the battery voltage reaches the required optimum level with the help of the relay relay, the transistor and the zener diode when bend the current back to the system, and the system have the ability to indicate when the battery is charging or not, when the battery is empty or fully charged through the digital display....{read more and download full material}

0007]. DESIGN AND CONSTRUCTION OF A 1KM TRANSMITTER: An FM transmitter is an electronic device which, with the aid of an antenna, produces radio waves. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves.
FM transmitter is basically a VHF colipits oscillator capable of transmitting sound or music to any standard FM receiver. The circuit works on a D.C source which makes it for a pure rectification. FM transmitter also has a capacitor microphone which picks up very weak sound signals.
The FM transmitter was designed using transistors and other component such resistor, inductor and capacitors. This project transmits frequency on 100MHz± 5%. The transmitting distance is 1km. It is powered with 5volt – 15volts D.C battery using suitable F.M receiver tuned to the transmitting frequency of this project. F.M Transmitter can be used as cordless microphones, mobile phone and for public address purposes. The distant of transmission is limited to 1km and fixed frequency of transmission, away from all other radio station. This gives best range and least interference....{read more and download full material}

0008]. DESIGN AND CONSTRUCTION OF AN FM TRANSMITTER:An FM transmitter is an electronic device which, with the aid of an antenna, produces radio waves. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves. Frequency modulation (FM) transmitter generates the radio waves by varying the radio signal’s frequency slightly. FM transmitter is basically a VHF colipits oscillator capable of transmitting sound or music to any standard FM receiver. The circuit works on a D.C source which makes it for a pure rectification. FM transmitter also has a capacitor microphone which picks up very weak sound signals. This FM transmitter was designed using transistors and other component such resistor, inductor and capacitors. This project transmits frequency on 100MHz± 5%. The transmitting distance is l00metres. It is powered with 9volts D.C battery using suitable F.M receiver tuned to the transmitting frequency of this project. F.M Transmitter can be used as cordless microphones, mobile phone and for public address purposes. The distant of transmission is limited to 100m and fixed frequency of transmission, away from all other radio station. This gives best range and least interference. The antenna is attached to the outside of the transmitter, as in portable devices such as cell phones, walkie-talkies, and garage door openers. In more powerful transmitters, the antenna may be located on top of a building or on a separate tower, and connected to the transmitter by a feed line, that is a transmission line....{read more and download full material}

0009]. DESIGN AND CONSTRUCTION OF A 0-30 VDC AUTOMATIC REGULATED POWER SUPPLY WITH USB:This project work is on design of a variable power supply. This work makes it possible for someone that wants to run, say a 3v radio with a power supply without using 2 * 1.5AA battery or powering any other device of higher or lower voltage rating without considering buying a new power supply.
This device supplies different level of electric energy to an electrical load. The primary function is to supply different regulated voltage to loads that fall at the same rating limit say 0-30vdc...{read more and download full material}

0010]. DESIGN AND CONSTRUCTION OF A 1. 5A  35 VOLT DC REGULATED POWER SUPPLY:Power supply is an electronic device that supplies electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another. This project is 1.5A 35V regulated power supply. It is a small power supply that provides a regulated voltage, adjustable between 1.5 and 35 volts at 1 ampere. The system is built around LM317 ic. This circuit is thermal overload protected because the current limiter and thermal overload protection are included in the IC....{read more and download full material}

0011]. CONSTRUCTION AND INSTALLATION OF 1.5 HORSE POWER OF WINDOW UNIT AC :Window unit air conditioners are installed in an open window. The interior air is cooled as a fan blows it over the evaporator. On the exterior the heat drawn from the interior is dissipated into the environment as a second fan blows outside air over the condenser. A large house or building may have several such units, permitting each room to be cooled separately...{read more and download full material}

0012]. DESIGN AND CONSTRUCTION OF A 1.5 KVA SOLAR GENERATOR:This work is on design and construction of a 1.5KVA solar energy generator. Solar energy generator and also be called solar inverter. Solar energy generator converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment.
In solar energy generator, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar generator is used to convert the DC to AC...{read more and download full material}

0013]. THE DESIGN AND CONSTRUCTION A 1.5KVA AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of a 1.5kva Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages.
This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 220V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices.
In this project, 1.5KW was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 220V all at 50Hz...{read more and download full material}


0014]. DESIGN AND CONSTRUCTION OF A 1.5KVA POWER INVERTER WITH DIGITAL DISPLAY AND A REMOTE CONTROL: This project is titled the design and construction of a DC to AC inverter system. It is designed to meet up with the power demand in the offices and in homes in the absence of power supply from the national supply authority, NEPA. In order words the device / item serves as a substitute for NEPA which almost monopolises the power supply to people. It is designed in such a way that it will take up 12v DC from battery and inverts it to an output of 220v, 50H2 AC. It makes no noise during operation and no hazardous carbon monoxide is generated in the surrounding.   This is a feature that makes it safe to use any where when compared to generator. Also, the circuit is capable of charging the battery (i.e 12v source) when the power from the supply authority is on. This greatly reduces the cost of operation of the system. This device uses seven segment displays to indicate the status of the battery and to indicate when the device is powered or not, and a remote control is used for switch it ON and OFF...{read more and download full material}

0015]. DESIGN AND CONSTRUCTION OF A 1.5KVA MODIFIED SINE WAVE INVERTERS: Modified Square Wave or step wave approximate a pure sine waveform. The output of a modified square wave, quasi square, or modified sine wave inverter is similar to a square wave output except that the output goes to zero volts for a time before switching positive or negative Modified sine wave inverters are designed to satisfy the efficiency requirements of the photovoltaic system while being less expensive than pure sine waveform inverters. These inverters are capable of operating a wide variety of loads; electronic and household items including but not limited to TV, VCR, and satellite receiver, computers, and printers.
Some electronic devices may pick up inverter noise while operating with modified sine waveform. Using fluorescent lighting can be problematic when using modified sine wave inverters. Most of the equipment on the market is designed for use with sine waves. Some appliances, such as microwaves, drills, clocks or speed motors will not produce full output if they don't use sine wave current, moreover they may damage the equipment. Some loads, such as light dimmers will not work without sine wave at all.
It's safe to say any electronic device that requires sensitive calibration can only be used with pure sine wave inverters. For many electronic devices that don't require sensitive calibration, modified sine wave inverters are a more cost-effective option.
This work is aimed at designing a 1.5KVA modified sine wave inverter that can be used to power appliances both in homes and industries...{read more and download full material}

0016]. DESIGN AND CONSTRUCTION OF A 2KM FM TRANSMITTER : An FM transmitter is an electronic device which, with the aid of an antenna, produces radio waves. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves.
FM transmitter is basically a VHF colipits oscillator capable of transmitting sound or music to any standard FM receiver. The circuit works on a D.C source which makes it for a pure rectification. FM transmitter also has a capacitor microphone which picks up very weak sound signals.
The FM transmitter was designed using transistors and other component such resistor, inductor and capacitors. This project transmits frequency on 100MHz± 5%. The transmitting distance is l00metres. It is powered with 5volt – 15volts D.C battery using suitable F.M receiver tuned to the transmitting frequency of this project. F.M Transmitter can be used as cordless microphones, mobile phone and for public address purposes. The distant of transmission is limited to 100m and fixed frequency of transmission, away from all other radio station. This gives best range and least interference...{read more and download full material}

0017]. DESIGN AND CONSTRUCTION OF A PORTABLE FM TRANSMITTER: A portable fm transmitter which is also known as miniature FM transmitter is an electronic device which, with the aid of an antenna, produces radio waves and which it's transmissions can be picked up on any standard FM radio. It has a range of up to 1/4-mile (400 meters) or more, depending on the line-of-sight, obstructions by large buildings. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves. This FM transmitter is basically a VHF colipits oscillator capable of transmitting sound or music to any standard FM receiver. The circuit works on a D.C source which makes it for a pure rectification. FM transmitter also has a capacitor microphone which picks up very weak sound signals. The FM transmitter was designed using transistors and other component such resistor, inductor and capacitors. This project transmits frequency on 100MHz± 5%. The transmitting distance is 400metres. It is powered with 5volt – 15volts D.C battery using suitable F.M receiver tuned to the transmitting frequency of this project. F.M Transmitter can be used as cordless microphones, mobile phone and for public address purposes. The distant of transmission is limited to 400m and fixed frequency of transmission, away from all other radio station. This gives best range and least interference....{read more and download full material}

0018]. DESIGN AND CONSTRUCTION OF A 30KM RANGE FM TRANSMITTER USING DISCRETE COMPONENTS: An FM transmitter is an electronic device which, with the aid of an antenna, produces radio waves. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves. FM transmitter is basically a VHF colipits oscillator capable of transmitting sound or music to any standard FM receiver. The circuit works on a D.C source which makes it for a pure rectification. FM transmitter also has a capacitor microphone which picks up very weak sound signals, and discrete components such as: Transistor, Diode, Resistor, Capacitor and Inductor. The distant of transmission is limited to 30km and fixed frequency of transmission, away from all other radio station. This gives best range and least interference....{read more and download full material}

0019]. MICROCONTROLLER BASED ELECTRICAL APPLIANCES CONTROLLING SYSTEM USING CELL PHONE:This device is design to monitor and control electrical devices (Analog and Digital) remotely using GSM modem/phone.  The GSM modem provides the communication mechanism between the user and the microcontroller system by means of SMS messages. User can control multiple electrical devices by sending suitably formatted SMS message to the microcontroller based control system.  These SMS commands are interpreted by microcontroller system and are validated. If the SMS command received is valid then it takes the necessary action to control the said devices.
This system also continuously monitors the status of devices connected to it. If the status of any critical device changes from ON to OFF or vice versa, then microcontroller based system automatically sends the SMS alerts back to user. After completion of the command implementation this system sends the confirmation messages back to the calling user...{read more and download full material}  

0020]. DESIGN AND CONSTRUCTION OF A GSM BASED DEVICE MONITORING AND CONTROL SYSTEM:This device is design to monitor and control electrical devices (Analog and Digital) remotely using GSM modem/phone.  The GSM modem provides the communication mechanism between the user and the microcontroller system by means of SMS messages. User can control multiple electrical devices by sending suitably formatted SMS message to the microcontroller based control system.  These SMS commands are interpreted by microcontroller system and are validated. If the SMS command received is valid then it takes the necessary action to control the said devices. This system also continuously monitors the status of devices connected to it. If the status of any critical device changes from ON to OFF or vice versa, then microcontroller based system automatically sends the SMS alerts back to user. After completion of the command implementation this system sends the confirmation messages back to the calling user...{read more and download full material}

0021]. MEASURING POWER QUALITY OF A SYSTEM :Electrical energy is a traded commodity that is becoming more important every day; there is increasing demand for continuous access to power (supply quality) and disturbance free power (power quality). Today’s power environments cover renewable energy production as well as continuously increasing electrical demand within the home and industrial sectors. This increases the requirement for continuous and reliable monitoring of the power consumed. Each disturbance that occurs reduces the quality of delivery and power and thereby gives an increased cost. Energy optimization covers both checks of energy volume as well as a connection to energy losses and their cause. Supplementing energy measurement with power quality measurement gives the information to display the cause of energy losses. Then a decision for the most cost efficient action can be made.  power quality gives you the foundation to optimize your power and transmission network and make cost savings.... [read more to downlooad complete material]

0022]. DESIGN AND CONSTRUCTION OF A TRANSFORMER TEMPERATURE MONITORING WITH AUTO CIRCUIT BREAKER ALARM : Temperature monitoring system for power transformers submerged in oil applied preferentially in transformers submerged in oil and it presents several facilities in the sense of becoming temperature monitoring more reliable and safe, with highlight for the redundant measurement of temperature of the top of the oil; self-calibration of the temperature measurement entrances by means of internal references and specific electronic circuits; timing between successive activation of the groups of forced cooling when the deactivation of monitoring system on screen; internal watches with auxiliary alimentation without battery; safety reinforced in the alarms signaling for elevated temperature and finally automatic adjustment of the alarm values of the temperature differential of the commuter of derivations in load..... [read more to downlooad complete material]

0023]. DRIVER AND OUTPUT STAGE OF A 3.5KVA INVERTER: A driver and output stage prepares a small electrical signal for further amplification or processing. It is used to boost the signal strength to drive the transformer of an inverter. In inverter circuit,  the received oscillating frequency is suitably amplified to high current levels using Mosfets.Though the boosted response is an AC, but is still at the battery supply voltage level and therefore cannot be used to operate electrical appliances which work at higher voltage AC potentials. The amplified voltage is therefore finally applied to the output transformer secondary winding... [read more to downlooad complete material]

0024]. DESIGN AND CONSTRUCTION OF A DRIVER AND OUTPUT STAGE OF AN INVERTER: A driver and output stage prepares a small electrical signal for further amplification or processing. It is used to boost the signal strength to drive the transformer of an inverter. In inverter circuit,  the received oscillating frequency is suitably amplified to high current levels using Mosfets. Though the boosted response is an AC, but is still at the battery supply voltage level and therefore cannot be used to operate electrical appliances which work at higher voltage AC potentials. The amplified voltage is therefore finally applied to the output transformer secondary winding... [read more to downlooad complete material]

0025]. WIRELESS POWER TRANSFER THROUGH COIL:
As power requirements for portable devices increase, consumers are looking for easy-to-use charging solutions that can be deployed in a wide array of environments such as home, office, automobiles, airports, schools and more. Wireless charging uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station.  Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device... [read more to downlooad complete material]

0026]. SMART GRID – FUTURE ELECTRIC GRID: Smart grid is referred to as “an automated, widely distributed energy delivery network incorporating the benefits of distributed computing and communications to deliver real-time information and enable the near-instantaneous balance of supply and demand. The smart grid brings the philosophies, concepts, and technologies that enabled the Internet to the utility and energy grid."
Power grids now undertake a one-directional “broadcast" power from the central power generators to users. The smart grid concept entails routing power to users using two-way digital technology that enables the power grid to respond to a wide range of conditions at the users point, facilitating optimal energy usage, resulting in reduced cost and increased reliability and transparency. In this work, reasons why smart grid will replace our traditional grid is discussed... [read more to downlooad complete material]

0027]. POWER FAILURE AND ITS EFFECTS ON APPLIANCES : Electric power supply is the most important commodity for national development. With electrical energy the people are empowered to work from the domestic level and the cottage industries, through the small-scale and medium industries to employment in the large-scale manufacturing complexes. In these days, depriving people of electric power is tantamount to castration. Power failure is a period of time when the electricity supply to a particular building or area is interrupted, for example because of damage to the cables or any other reason. Modern equipment requires a continuous supply of electricity. Not only industry, but also in the household. Take the case of a refrigerator. If you experience a power off situation, your food will be spoilt. This work in particular discuses power failure and its effect on appliances... [read more to downlooad complete material]

0028]. DESIGN AND CONSTRUCTION OF A HIGH AND LOW VOLTAGE CUT-OFF WITH TIME DELAY: The power line fluctuations and cut-offs causes damages to electrical appliances connected to the line. It is more serious in the case of domestic appliances like fridge and air conditioners. If a fridge is operated on low voltage, excessive current flows through the motor, which heats up, and get damaged. High and low voltage cut off is a device designed to protect electrical appliances from over voltage as well as under voltage. The under/over voltage protection circuit with time delay presented in this work is a low cost and reliable circuit for protecting such equipments from damages. Whenever the power line is switched on it gets connected to the appliance only after a delay of a fixed time. If there is hi/low fluctuations beyond sets limits the appliance get disconnected. The system tries to connect the power back after the specific time delay, the delay being counted from the time of disconnection. If the power down time (time for which the voltage is beyond limits) is less than the delay time, the power resumes after the delay: If it is equal or more, then the power resumes directly. This circuit has been designed, built and evaluated by me to use as a protector for my home refrigerator. This is designed around readily available semi-conductor devices such as standard bipolar medium power NPN transistor . The complete circuit is consisting of various stages. They are: - Dual rail power supply, Reference voltage source, Voltage comparators for hi/low cut offs, Time delay stage and Relay driver stage... [read more to downlooad complete material]

0029]. MICROCONTROLLERS AND MICROPROCESSORS: The introduction of “Microprocessor” has changed the way in which we view, analyze and control the world surrounding us over the past two decades. Microprocessor is considered a product of combined developments in the fields of computer architecture and Integrated Circuit (IC) fabrication. It has made the concept of personal computing very feasible. The Microcontroller is often considered as a byproduct in the development of microprocessor. The fabrication process and programming technique which are responsible in the development of microprocessors has also lead to the development of microcontrollers. Until a decade ago, the microcontrollers are less popular in both the technical community and general public even though most of the consumer electronics like televisions, video games, video cassette recorders, telephones, elevators etc. comprise of them. This work discuses differences between Microcontroller and microprocessors.... [read more to downlooad complete material]

0030]. DESIGN AND CONSTRUCTION OF A 500W SOLAR POWER INVERTER: solar inverter converts direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
The solar panel used in solar inverter produces direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC. An inverter produces square waves or a sine wave which can be used for running lights, televisions, lights, motors etc. However these inverters also produce harmonic distortion... [read more to downlooad complete material]

0031]. POWER ELECTRONICS DEVICES AND ITS APPLICATION: Power Electronics deals with the applications of solid state electronic devices in the control and conversion of electric power. Power Electronics has seen a tremendous growth in recent times and almost all the applications today use power electronic devices in some or the other form. Hence it becomes essential to study the advantages of these devices, which made it so popular.... [read more to downlooad complete material]

0032]. DESIGN AND CONSTRUCTION OF 20WATTS WIRELESS PUBLIC ADDRESS SYSTEM : It has become inevitable that there would be communication and due to the inherent limitation of the human voice, the public address system came to being. A public address public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals. Public addressing system is often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations. Intercom systems, installed in many buildings, have microphones in many rooms allowing the occupants to respond to announcements... [read more to downlooad complete material]

0033]. DESIGN AND CONSTRUCTION OF A 1000W SOLAR POWER INVERTER: solar inverter converts direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.The solar panel used in solar inverter produces direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC. An inverter produces square waves or a sine wave which can be used for running lights, televisions, lights, motors etc. However these inverters also produce harmonic distortion... [read more to downlooad complete material]

0034]. DESIGN AND CONSTRUCTION OF A 1500W SOLAR POWER INVERTER:solar inverter converts direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
The solar panel used in solar inverter produces direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC. An inverter produces square waves or a sine wave which can be used for running lights, televisions, lights, motors etc. However these inverters also produce harmonic distortion... [read more to downlooad complete material]

0035]. DESIGN AND CONSTRUCTION OF A 2000W SOLAR POWER INVERTER:solar inverter converts direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
The solar panel used in solar inverter produces direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC. An inverter produces square waves or a sine wave which can be used for running lights, televisions, lights, motors etc. However these inverters also produce harmonic distortion... [read more to downlooad complete material]

0036]. DESIGN AND CONSTRUCTION OF A 2500W SOLAR POWER INVERTER:solar inverter converts direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
The solar panel used in solar inverter produces direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC. An inverter produces square waves or a sine wave which can be used for running lights, televisions, lights, motors etc. However these inverters also produce harmonic distortion... [read more to downlooad complete material]

0037]. DESIGN AND CONSTRUCTION OF A 5000W SOLAR POWER INVERTER:solar inverter converts direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
The solar panel used in solar inverter produces direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC. An inverter produces square waves or a sine wave which can be used for running lights, televisions, lights, motors etc. However these inverters also produce harmonic distortion... [read more to downlooad complete material]

0038]. DESIGN AND CONSTRUCTION OF A 10KVA SOLAR POWER INVERTER: solar inverter converts direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
The solar panel used in solar inverter produces direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC. An inverter produces square waves or a sine wave which can be used for running lights, televisions, lights, motors etc. However these inverters also produce harmonic distortion... [read more to downlooad complete material]

0039]. DESIGN AND CONSTRUCTION OF A WIRELESS PUBLIC ADDRESS SYSTEM: It has become inevitable that there would be communication and due to the inherent limitation of the human voice, the public address system came to being. A public address public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals. Public addressing system is often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations. Intercom systems, installed in many buildings, have microphones in many rooms allowing the occupants to respond to announcements... [read more to downlooad complete material]

0040]. DESIGN AND CONSTRUCTION OF A PUBLIC ADDRESS SYSTEM :It has become inevitable that there would be communication and due to the inherent limitation of the human voice, the public address system came to being. A public address public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals. Public addressing system is often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations. Intercom systems, installed in many buildings, have microphones in many rooms allowing the occupants to respond to announcements... [read more to downlooad complete material]

0041]. DESIGN AND CONSTRUCTION OF A SOLAR INVERTER : This work is on design and construction of a 12VDC to 220VAC solar inverter. Solar inverter converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment.
In solar inverter, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC... [read more to downlooad complete material]

0042]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC BATHROOM LIGHT WITH BACK-UP LAMP: Sometimes we forget to switch off the bathroom light and it remains on unnoticed for long periods. This circuit solves the problem of electricity wastage by switching off the lamp automatically after 30 minutes once it is switched on. The back-up LED lamp provided in the circuit turns on for three minutes when mains fails. This is helpful especially when you are taking a shower at night... [read more to downlooad complete material]

0043]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC BATHROOM LIGHT SWITCH CONROLLING SYSTEM:This project is on design and construction of an automatic bathroom light. The system automatically turns ON bathroom light when the bathroom door is opened, and remains lit in the occupied state. When the door is opened again the lamp turns off after a very short delay. This automatic circuit saves energy and greatly assists your visitors, especially at night. The “single-chip” circuit, built around the popular decade counter CD4017 (IC1), is very compact, and can be powered from any 5VDC/500mA mobile phone travel charger/similar smps adaptor. After construction, try to enclose the whole circuit in a suitable plastic case for total convenience. Next, arrange the door switch (S1) such that when the door is closed it should be in closed state... [read more to downlooad complete material]

0044]. BACTERIA POWERED FUEL: Renewable and clean forms of energy are one of society's greatest needs.  At the same time, 2 billion people in the world lack adequate sanitation and the economic means to afford it. Abundant energy, stored primarily in the carbohydrates can be found in waste biomass, agricultural, municipal and industrial sources as well as in dedicated energy crops. A microbial fuel cell is a device that directly converts the metabolic and enzyme catalytic energy to electricity by using conventional electrochemical technology. Chemical energy can be converted into electricity by coupling of biocatalytic oxidation of organic or inorganic compounds to the chemical reduction of an oxidant at the interface between cathode and anode...[read more to downlooad complete material]

0045]. DESIGN AND CONSTRUCTION OF A RADIO FM TRANSMITTER :An FM transmitter is an electronic device which, with the aid of an antenna, produces radio waves. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves. FM transmitter is basically a VHF colipits oscillator capable of transmitting sound or music to any standard FM receiver. The circuit works on a D.C source which makes it for a pure rectification. FM transmitter also has a capacitor microphone which picks up very weak sound signals. The FM transmitter was designed using transistors and other component such resistor, inductor and capacitors. This project transmits frequency on 100MHz± 5%. The transmitting distance is l00metres. It is powered with 5volt – 15volts D.C battery using suitable F.M receiver tuned to the transmitting frequency of this project. F.M Transmitter can be used as cordless microphones, mobile phone and for public address purposes. The distant of transmission is limited to 100m and fixed frequency of transmission, away from all other radio station. This gives best range and least interference...[read more to downlooad complete material]

0046]. DESIGN AND CONSTRUCTION OF A FUELLESS POWER GENERATOR OF 1KVA CAPACITY: This project is on "DESIGN AND CONSTRUCTION OF FUELLESS POWER GENERATOR". This device is also known as INVERTER GENERATOR. It is designed to meet up with the power demand in the offices and in homes in the absence of power supply from the national supply authority, NEPA. In order words the device / item serves as a substitute for NEPA (PHCN) which almost monopolises the power supply to people and also our conventional generator. This device have overcome the need for conventional generator because it uses no fuel to generate power supply and it is also noiseless. It makes no noise during operation and no hazardous carbon monoxide is generated in the surrounding. This is a feature that makes it safe to use any where when compared to generator. It is designed in such a way that it will take up 12v DC from battery and inverts it to an output of 220v, 50Hz AC. Also, the circuit is capable of charging the battery (i.e 12v source) when the power from the supply authority is on. This greatly reduces the cost of operation of the system. This device can be used to power appliances both in homes and industries...[read more to downlooad complete material]

0047]. DESIGN AND CONSTRUCTION OF A 3.5KVA AUTOMATIC INVERTER CHANGEOVER: This work is on change over selector switch for automatic toggling of an inverter when AC mains is present and vice versa and also the system must enable automatic switching of the battery charger such that when AC mains is present the inverter battery gets charged and when AC mains fails, the battery gets connected with the inverter for supplying AC to the load. The configuration should be such that everything takes place automatically and the appliances are never switched OFF, just reverted from inverter AC to Mains AC and vice versa during mains power failures and restorations...[read more to downlooad complete material]

0048]. DESIGN AND CONSTRUCTION OF A PUBLIC ADDRESS SYSTEM (PA SYSTEM) WITH A.C AND BATTERY POWER SOURCE: This work is titled design and construction of a public address system with ac and battery power source. A public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals. Public addressing system is often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations. Intercom systems, installed in many buildings, have microphones in many rooms allowing the occupants to respond to announcements. This system was built using some major electronics components such as transistor, resistor, capacitors, and an aluminum heatsink was used to protect the power transistors from overheating. This Public Addressing Systems have a potential for audio feedback, which occurs when sound from the speakers is picked up by the microphone and is then re-amplified and sent through the speakers again. That makes it to sounds like a loud high-pitched squeal or screech, and can occur when the volume of the system is turned up too high...[read more to downlooad complete material]

0049]. DESIGN AND FABRICATION OF AN ELECTRIC-GAS-CHARCOAL POWERED OVEN (TRIPLEX POWERED OVEN): Due to irregular power supply common in developing countries, as well as growing high cost of hydrocarbon, the need arises for the development of a triple energy source that uses electricity, gas and charcoal for heating oven chambers. The triplex-powered oven is a combination of components that make possible the use of alternative heat sources. The upper chamber is powered by electricity, the middle chamber is powered charcoal whilst the lower chamber works for the supply of gas located outside the chamber as a heat source. In the upper chamber is a heating element that generates and dissipates heat within the enclosure. The element is connected to a thermostat that regulates the rate of heat generation in the system. Cooking gas is supplied to the burner located in the lower chamber of the oven via a pipe connection to the gas cylinder while the heat required from the charcoal oven is supplied by the coal. Perforations allow for heat dissipation within the lower chamber. The performance test gave oven efficiency of 95.2 per cent. The oven can be adapted for both domestic and industrial purposes and have been found very useful in bakery industries...[read more to downlooad complete material]

0050]. DESIGN OF WATER SUPPLY PIPELINE NETWORK : Providing sufficient water of appropriate quality and quantity has been one of the most important issues in human history. Most ancient civilizations were initiated near water sources. As populations grew, the challenge to meet user demands also increased. People began to transport water from other locations to their communities. For example, the Romans constructed aqueducts to deliver water from distant sources to their communities. Today, a water supply system consists of infrastructure that collects, treats, stores, and distributes water between water sources and consumers. Water pipelines have been a proposed, but controversial option. These massive pipelines pump water from a large source and transfer it across a great distance to areas in need...[read more to downlooad complete material]

0051]. DESIGN AND CONSTRUCTION OF POWER RESTORATION REMINDER USING A PIEZO-BUZZER AND LED LAMP: Power restoration is a period of time when the electricity supply to a particular building or area is restored, for example because of replacement or servicing damage to the cables or any other reason. Modern equipment requires a continuous supply of electricity. Not only industry, but also in the household. Take the case of a refrigerator. If you experience a power off situation, your food will be spoilt.
 Power restoration reminder is a monitoring device that will trigger a buzzer and lights an LED when the mains supply is restored. This device is helpful to inform the restoration of power supply to some critical installation such as a pump in a fish tank. Once the buzzer sound, one will know that there is a restoration of power supply and actions need to be taken to switch ON and OFF all necessary appliances...[read more to downlooad complete material]

0052].DESIGN AND CONSTRUCTION OF A POWER SUPPLY RESTORATION ALARM: Power restoration is a period of time when the electricity supply to a particular building or area is restored, for example because of replacement or servicing damage to the cables or any other reason. Modern equipment requires a continuous supply of electricity. Not only industry, but also in the household. Take the case of a refrigerator. If you experience a power off situation, your food will be spoilt.
 Power restoration alarm is a monitoring device that will trigger a buzzer and lights an LED when the mains supply is restored. This device is helpful to inform the restoration of power supply to some critical installation such as a pump in a fish tank. Once the buzzer sound, one will know that there is a restoration of power supply and actions need to be taken to switch ON and OFF all necessary appliances...[read more to downlooad complete material]

0053]. DESIGN AND CONSTRUCTION OF A POWER SUPPLY RESTORATION ALARM WITH 555 TIMER, BUZZER AND LED: Power restoration is a period of time when the electricity supply to a particular building or area is restored, for example because of replacement or servicing damage to the cables or any other reason. Modern equipment requires a continuous supply of electricity. Not only industry, but also in the household. Take the case of a refrigerator. If you experience a power off situation, your food will be spoilt.
 Power restoration alarm is a monitoring device that will trigger a buzzer and lights an LED when the mains supply is restored. This device is helpful to inform the restoration of power supply to some critical installation such as a pump in a fish tank. Once the buzzer sound, one will know that there is a restoration of power supply and actions need to be taken to switch ON and OFF all necessary appliances.This work was built around 555 timer IC, buzzer and LED....[read more to downlooad complete material]

0054]. DESIGN AND CONSTRUCTION OF A POWER FAILURE AND RESUMPTION ALARM: Power failure is a period of time when the electricity supply to a particular building or area is interrupted, for example because of damage to the cables or any other reason, and Power restoration is a period of time when the electricity supply to a particular building or area is restored, for example because of replacement or servicing damage to the cables or any other reason. This device gives audio-visual indication of the failure and resumption of mains power. The circuit is built around dual timer IC LM556. When mains is present the bicolour LED glows in green colour, and when mains fails it turns red...[read more to downlooad complete material]

0055]. DESIGN AND CONSTRUCTION OF A POWER RESUMPTION ALARM AND LOW-VOLTAGE PROTECTOR : If appliiances are in use before before power fails from the mains, if they are not switched OFF before the power resumes it can have negative effect on the appliances.The device protects your electrical appliances like AC motors from damage due to low voltage at power-on. It remains standby without giving power to the load after power resumes. The load can be switched on only manually. This prevents damage to the device if it is ‘on’ when power resumes...[read more to downlooad complete material]

0056]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC POWER-RESUMPTION ALARM : Power restoration is a period of time when the electricity supply to a particular building or area is restored, for example because of replacement or servicing damage to the cables or any other reason. Somestimes when power resumes the occupant of the house may not be aware unless if power resumption alarm is used in such home to detect the presence of power supply resumption. Most power-resumption alarm devices produce non-stop alarm when power resumes. To overcome this problem, this automatic circuit that sounds an alarm for a few seconds only after power resumes. Whenever power failure occurs this circuit does not sound any alarm. But when power resumes it produces an alarm sound for about 11 seconds...[read more to downlooad complete material]

0057]. DESIGN AND CONSTRUCTION OF A POWER FAILURE ALARM : Power failure is a period of time when the electricity supply to a particular building or area is interrupted, for example because of damage to the cables or any other reason. Modern equipment requires a continuous supply of electricity. Not only industry, but also in the household. Take the case of a refrigerator. If you experience a power off situation, your food will be spoilt. Power failure alarm monitoring device that will trigger a buzzer when the mains supply cuts off. This device is helpful to inform the loss of power supply to some critical installation such as a pump in a fish tank. Once the buzzer sound, one will know that there is a loss of power supply and actions need to be taken to rectify the situation by providing alternative power supply or relocating the installation...[read more to downlooad complete material]

0058]. DESIGN AND CONSTRUCTION OF A FIRE ALARM SYSTEM : This project is titled design and construction of an automatic fire alarm. Fire alarm is an electronics device that is stored in a building to detect the presence of fire accident. An automatic fire alarm system is designed to detect the unwanted presence of fire by monitoring environmental changes associated with combustion. In general, a fire alarm system is classified as either automatically actuated, manually actuated, or both. Automatic fire alarm systems are intended to notify the building occupants to evacuate in the event of a fire or other emergency, report the event to an off-premises location in order to summon emergency services, and to prepare the structure and associated systems to control the spread of fire and smoke. This fire alarm system composes of light dependent resistor (LDR) which works as a smoke sensor. Light dependent resistor is a type of resistor with high resistance in the presence of light and which reduces in its resistance when smoke passes through the surface.
The aim of this project is to design and construct a fire alarm for a building that will detect the presence of fire accident in a building...[read more to downlooad complete material]

0059]. DESIGN AND CONSTRUCTION OF AN AUTOMATED FIRE EMERGENCY CONTROL: Fire disaster is a common threat to lives and property. Fire emergency control offers an automatic fire extinguishing which provides real time monitoring, exploration and programmed fire alarm. This paper presents the design of a low cost, robust and secure fire protection system for buildings .It sends early alarm when the fire occurs and helps to reduce the fire damage. This system consists of a smoke detector and a temperature sensor whose outputs are connected to the controller. The system takes into account the density of smoke and thus the probability of false alarms can be avoided. A PIC16F84A micro-controller is considered here to control the total arrangement and the test results through hardware prototype show that the validity of proposed approach which achieves design requirements as well as increase system reliability...[read more to downlooad complete material]

0060]. DESIGN AND CONSTRUCTION OF A FIRE ALARM USING MQ-2 SENSOR: This project is titled design and construction of an automatic fire alarm. Fire alarm is an electronics device that is stored in a building to detect the presence of fire accident. An automatic fire alarm system is designed to detect the unwanted presence of fire by monitoring environmental changes associated with combustion. In general, a fire alarm system is classified as either automatically actuated, manually actuated, or both. Automatic fire alarm systems are intended to notify the building occupants to evacuate in the event of a fire or other emergency, report the event to an off-premises location in order to summon emergency services, and to prepare the structure and associated systems to control the spread of fire and smoke.
This fire alarm system composes of a MQ-2 smoke sensor. This smoke sensor detects the concentrations of smoke in the air and outputs its reading as an analog voltage. The sensor can measure concentrations of flammable gas of 300 to 10,000 ppm. The sensor can operate at temperatures from -20 to 50°C and consumes less than 150 mA at 5 V.
The aim of this project is to design and construct a fire alarm for a building that will detect the presence of fire (smoke) accident in a building...[read more to downlooad complete material]

0061]. DESIGN AND CONSTRUCTION OF A FIRE ALARM SYSTEM USING LDR, 555 TIMER, AND RELAY: This project is titled design and construction of an automatic fire alarm using LDR, 555 timers, and relay. Fire alarm is an electronics device that is stored in a building to detect the presence of fire accident. An automatic fire alarm system is designed to detect the unwanted presence of fire by monitoring environmental changes associated with combustion. In general, a fire alarm system is classified as either automatically actuated, manually actuated, or both. Automatic fire alarm systems are intended to notify the building occupants to evacuate in the event of a fire or other emergency, report the event to an off-premises location in order to summon emergency services, and to prepare the structure and associated systems to control the spread of fire and smoke. This fire alarm system composes of light dependent resistor (LDR) which works as a smoke sensor. Light dependent resistor is a type of resistor with high resistance in the presence of light and which reduces in its resistance when smoke passes through the surface.
The aim of this project is to design and construct a fire alarm for a building that will detect the presence of fire accident in a building...[read more to downlooad complete material]

0062]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER : This project is titled design and construction of an automatic battery charger Automatic battery charger is an acid battery charger that is designed to charge any acid battery. This automatic charger is basically a DC power supply source. Here a transformer is used to step down the AC mains input voltage to the required level as per the rating of the transformer. This transformer is always a high power type and Lm338 variable regulator is able to produce a high current (from 1 – 5A) output as required by most lead-acid batteries and the output current is adjusted by 5k variable resistor. A bridge rectifier configuration is used to rectify the low voltage AC into DC and is further smoothed by a high value electrolytic capacitor. This DC is fed to an electronic circuit which regulates the voltage into a constant level and is applied to the battery under charge, where the energy is stored through an internal process of chemical reaction. In automatic battery chargers a voltage sensor circuit is incorporated to sense the voltage of the battery under charge. The charger is automatically switched OFF when the battery voltage reaches the required optimum level...[read more to downlooad complete material]

0063]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER WITH CHARGING PROGRESS   AND CHARGING LEVEL INDICATOR: This project is on a 12 volts automatic battery charger with charging progress   and charging level indicator. An automatic battery charger is an acid battery charger that is designed to charge any acid battery. In this work, a voltage sensor circuit is incorporated to sense the voltage of the battery under charge. The charger has the ability to automatically switched OFF when the battery voltage reaches the required optimum level with the help of the contact relay, the transistor and the zener diode when bend the current back to the system, and the system have the ability to indicate when the battery is charging or not, when the battery is empty or fully charged...[read more to downlooad complete material]
0065]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTOMATIC CAR BATTERY CHARGER WITH FULL VOLTAGE CUTOUT: A battery charger is an electrical device employed for charging batteries.  These batteries that are usually charged by battery charger are the storage batteries also known as “accumulator” the battery charger changes.  The alternating current forms the power line into d.c suitable for charging. When the battery is fully changed, is up to it’s maximum, 12 volt, the charger with automatically stop changing with the help of the contact relay, the transistor and the zener diode when bend the current back to the system, and the system have the ability to indicate when the battery is charging or not, when the battery is empty or fully charged...[read more to downlooad complete material]

0066]. DESIGN AND CONSTRUCTION OF A 6V and 12 VOLTS AUTHOMATIC BATTERY CHARGER: This project is titled design and construction of a 6 and 12V automatic battery charger. A 6 and 12volts Automatic battery charger is a dual acid battery charger that is designed to charge 6v and as well 12v battery. This automatic charger is basically a DC power supply source. Here a transformer is used to step down the AC mains input voltage to the required level as per the rating of the transformer. And the selection of voltage is done using single pole double throw switch whenever there is need for that. That is, whenever there is a 6v battery to be charged, the switch would be sued the select the required voltage from the charger and vice-versa. This transformer is always a high power type and is able to produce a high current output as required by most lead-acid batteriesl...[read more to downlooad complete material]

0067]. DESIGN AND CONSTRUCTION OF A 6V BATTERY CHARGER : This project is titled design and construction of a 6V battery charger. Battery  charger is an acid battery charger that is designed to charge 6V acid battery. It is basically a DC power supply source. Here a transformer is used to step down the AC mains input voltage to the required level as per the rating of the transformer. This transformer is always a high power type and Lm317 variable regulator is able to produce a high current (from 1 – 5A) output as required by most lead-acid batteries and the output current can adjusted by variable resistor. A bridge rectifier configuration is used to rectify the low voltage AC into DC and is further smoothed by a high value electrolytic capacitor. This DC is fed to an electronic circuit which regulates the voltage into a constant level and is applied to the battery under charge, where the energy is stored through an internal process of chemical reactionl...[read more to downlooad complete material]

0068]. DESIGN AND CONSTRUCTION OF A 6V CELL PHONE BATTERY CHARGER: This project is titled design and construction of a 6V cell phone battery charger. A 6V cell phone battery charger is an electronics device used in charging 6v cell phone batteries when used up by the instrument connected to it. This electronics device has the ability to stop charging when the battery is fully charged and starts charging when the battery voltage drops below the set point. A 6V cell phone battery charger is basically a DC power supply source. Here a transformer is used to step down the AC mains input voltage to the required level as per the rating of the transformer. The transformer output is rectified by BR1 and the positive DC supply is directly connected to the charger’s output contact, while the negative terminal is connected through current limiting resistor R2. D2 works as a power indicator with R1 serving as the current limiter and D3 indicates the charging status. A bridge rectifier configuration is used to rectify the low voltage AC into DC and is further smoothed by a high value electrolytic capacitor. This DC is fed to an electronic circuit which regulates the voltage into a constant level and is applied to the battery under charge, where the energy is stored through an internal process of chemical reaction...[read more to downlooad complete material]

0069]. DESIGN AND CONSTRUCTION OF A SOLAR BATTERY CHARGER USING 15V/130W SOLAR PANEL : This project is titled the design and construction of a solar battery charger. It is designed to meet up with the higher demand of power supply needed to keep our battery charged. Solar battery charger is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It does this by the use of solar panel which is a form of photoelectric cell (in that its electrical characteristics-- e.g. current, voltage, or resistance-- vary when light is incident upon it) which, when exposed to light, can generate and support an electric current without being attached to any external voltage source. This work is aimed at constructing a solar battery charger system which receives 15v dc from the solar panel and convert it to the level that can be safe to the acid battery – likely 13.6v...[read more to downlooad complete material]

0070]. DESIGN AND CONSTRUCTION OF A SOLAR CELL PHONE CHARGER: This project is titled the design and construction of a solar cell phone charger. It is designed to meet up with the higher demand of power supply needed to keep our cell phone battery charged. A solar cell phone battery charger is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It does this by the use of solar panel which is a form of photoelectric cell (in that its electrical characteristics-- e.g. current, voltage, or resistance-- vary when light is incident upon it) which, when exposed to light, can generate and support an electric current without being attached to any external voltage source. This work is aimed at constructing a solar cell phone battery charger system which receives 13.6V dc from the solar panel and convert it to the level that can be safe to the cell phone battery...[read more to downlooad complete material]

0071]. DESIGN AND CONSTRUCTION OF A SOLAR CELL PHONE CHARGER WITH BATTERY BACKUP : This project is titled the design and construction of a solar cell phone charger. It is designed to meet up with the higher demand of power supply needed to keep our cell phone battery charged. A solar cell phone battery charger is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It does this by the use of solar panel which is a form of photoelectric cell (in that its electrical characteristics-- e.g. current, voltage, or resistance-- vary when light is incident upon it) which, when exposed to light, can generate and support an electric current without being attached to any external voltage source.
This work is aimed at constructing a solar cell phone battery charger system which receives 13.6V dc from the solar panel and convert it to the level that can be safe to the cell phone battery...[read more to downlooad complete material]

0072]. DESIGN AND CONSTRUCTION OF SOLAR CHARGE CONTROLLER : Solar charge controller limits the rate at which electric current is added to or drawn from solar panel to electric batteries. It prevents overcharging and may protect against overvoltage, which can reduce battery performance or lifespan, and may pose a safety risk. It may also prevent completely draining (“deep discharging”) a battery, or perform controlled discharges, depending on the battery technology, to protect battery life. The terms “charge controller” or “charge regulator” may refer to either a stand-alone device, or to control circuitry integrated within a battery pack, solar battery-powered device, or battery chargerl...[read more to downlooad complete material]

0073]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER USING SCR: A battery is a device which can store energy in chemical form and convert that energy into electrical energy when needed. It can be secondary (rechargeable) or primary (Non rechargeable) Rechargeable batteries have an advantage over primary batteries with the fact that they can be reused. This is possible by charging a battery, i.e. feeding energy to the secondary cell by forcing electric current through it. A battery basically consists of number of cells, with each cell consisting of two electrodes immersed in an electrolyte solution consisting of an acid and distilled water. In charged state, one of the electrodes consists of a metal whereas the other consists of metal oxide. The acid enables flow of ions between the two electrodes. When the battery starts discharging, electrons flow from one electrode (anode) and get accumulated at another electrode (cathode). This happens by the process of oxidation and reduction and continues till both the electrodes are devoid of reagents and the battery is completely discharged. The charging is then done externally by providing external electric current so that the anode receives electrons and the excess electrons are removed from the cathode. However a problem arises when the battery gets overcharged, this leads to more gassing effect. Even excessive discharging of a battery reduces its age. A solution to this problem is to ensure a controlled charging method such that the battery charging and discharging is done in a controlled manner. This article describes a simple controlled battery charger using an SCR. The AC signal is rectified using a SCR and a comparator is used to detect the battery charge voltage with respect to a reference voltage so as to control the switching of the SCRl...[read more to downlooad complete material]

0074]. ASSEMBLING OF A 5KVA AUTOMATIC VOLTAGE STABILIZER : Due to higher damage of our electrical appliances usually caused by under-voltage (low voltage) over-voltage (high voltage), or voltage fluctuation, there is need to use our appliances with voltage stabilizer. The automatic voltage regulator (AVR) is a device designed to regulate voltage automatically – that is, to take a fluctuating voltage level and turn it into a constant voltage level, low and high voltage to normal 220VAC output.
Voltage stabilizer is one of the most essential electrical appliances which is used by people in their day to day life. This device is used in homes, commercial establishments, Govt. establishments, financial institutions, education institutions etc according to their requirement. The people are procuring every necessary item to meet up with our normal and consumable voltage supply used to protect our appliances such as fridge, some high capacity electronic items.
The aim of this work is to assemble a 5kva voltage stabilizer. This device was assembled with a 5kva Transformer (Copper Wound) which ensures 220vac output supply which operates on 50Hz and, the entire relay used on the board was rated 60 amps ...[read more to downlooad complete material]

0075]. DESIGN AND CONSTRUCTION OF A SOLID STATE AUTOMATIC VOLTAGE REGULATOR : The control of irregular voltage supply with fluctuation so as to become stable is carried out using this voltage stabilizer. Conventional stabilizers make use of mechanical relays which have a slow switching period but in this work stabilizer was built around solid state device such as TRIAC. This stabilizer is designed and constructed in a way that it makes use of silicon controlled rectifier which helps in reducing instability in the system and as well as having an increased switching period. This project demonstrates the use of Microcontrollers in power devices. The Microcontroller allows for accurate monitoring of the mains voltage and display on a seven-segment display. Depending on the voltage level of the mains, the Microcontroller triggers the appropriate TRIAC connected to an auto-transformer in order to stabilize the output voltage fed to the loads or appliances...[read more to downlooad complete material]

0076]. DESIGN, CONSTRUCTION AND ANALYSIS OF A 2KVA AUTOMATIC VOLTAGE REGULATORY SYSTEM WITH SEVEN SEGMENT DISPLAY : Voltage delivered to our home, office or industries may sometimes fluctuate which can cause serious damages to your appliance; if not completely destroying it. Nonetheless, other sophisticated devices subjected to voltage fluctuations could malfunction and have reduced efficiency, which are costly in terms of downtime and rejects. Most electrical and electronic equipment are designed to operate properly and within their specifications if the voltage supply varies within ±10% of nominal. However, some sensitive devices require stable incoming voltage for them to perform accurately, such as computers, medical laboratories, telecommunications and test equipment, but when electric fluctuation occur it can cause computerized or automatic machines to produce defective parts, unwanted triggering of appliances, system malfunction, testing equipment to give inaccurate data, nuisance tripping due to misoperation of relays and contactors, inconsistency of motor speed. In order to avoid all these effects, an automatic voltage regulatory system is employed which is an electronic device or circuit that maintains an output voltage to be consistent to its load current. This AVR has a servomechanism that hunts the accurate voltage when surges happen in order to maintain the needed voltage level that ultimately protects your appliance. This system circuit was analyzed and designed to stabilize an AC input voltage of 100-250V to give an AC output voltage of 220V at 50Hz automatically and this can output to a seven segment display...[read more to downlooad complete material]

0077]. DESIGN AND CONSTRUCTION AN AUTOMATIC VOLTAGE STABILIZER USING MICROCONTROLLER : This project is titled the design and construction of a 2kvaAutomatic Voltage Stabilizer Using microcontroller (PIC16F877A). Voltage stabilizers are used for many appliances in homes, offices and industries. The mains supply suffers from large voltage drops due to losses on the distribution lines. A voltage stabilizer maintains the voltage to the appliance at the nominal value of around 220 volts even if the input main fluctuates over a wide range. Here is the circuit of an automatic voltage stabilizer that can be adapted to any power rating. Its intelligence lays in the program on PIC16F877A—a low-cost microcontroller that is readily available. The circuit, when used with any appliance, will maintain the voltage at around 220V even if the input mains voltage varies between 180V and 250V. Here the circuit is shown for a 5A stabilizer. It acts within 100ms to produce a smoothly varying output whenever input mains voltage changes. The PIC16F877A is a microcontroller with 35 instructions, and hence program development with it is rather tough. But, there are good support programs...[read more to downlooad complete material]

0078]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC VOLTAGE STABILIZER : This project is titled the design and construction of an AC Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.
An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages. This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 240V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. In this project, an automatic ac voltage stabilizer was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 240V all at 50Hz...[read more to downlooad complete material]

0079].DESIGN AND CONSTRUCTION OF A 500VA AUTOMATIC VOLTAGE STABILIZER : This project is titled the design and construction of an AC Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.
An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages. This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 240V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. In this project, an automatic ac voltage stabilizer was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 240V all at 50Hz...[read more to downlooad complete material]

0080]. DESIGN AND CONSTRUCTION OF A 1KVA AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of an AC Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.
An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages. This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 240V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. In this project, an automatic ac voltage stabilizer was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 240V all at 50Hz...[read more to downlooad complete material]

0081]. DESIGN AND CONSTRUCTION OF A 1.5KVA AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of an AC Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.
An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages. This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 240V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. In this project, an automatic ac voltage stabilizer was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 240V all at 50Hz...[read more to downlooad complete material]

0082]. DESIGN AND CONSTRUCTION OF A 2KVA AUTOMATIC VOLTAGE STABILIZER:This project is titled the design and construction of an AC Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.
An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages. This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 240V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. In this project, an automatic ac voltage stabilizer was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 240V all at 50Hz...[read more to downlooad complete material]

0083]. DESIGN AND CONSTRUCTION OF A 2.5KVA AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of an AC Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.
An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages. This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 240V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. In this project, an automatic ac voltage stabilizer was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 240V all at 50Hz...[read more to downlooad complete material]

0084]. DESIGN AND CONSTRUCTION OF A 3KVA AUTOMATIC VOLTAGE STABILIZER : This project is titled the design and construction of an AC Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.
An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages. This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 240V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. In this project, an automatic ac voltage stabilizer was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 240V all at 50Hz...[read more to downlooad complete material]

0085]. DESIGN AND CONSTRUCTION OF A 3.5KVA AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of an AC Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.
An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages. This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 240V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. In this project, an automatic ac voltage stabilizer was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 240V all at 50Hz...[read more to downlooad complete material]

0086]. DESIGN AND CONSTRUCTION OF A SINGLE PHASE AUTOMATIC CHANGEOVER SWITCH : An Automatic Changeover Switch switches off the generator and automatically changes over to NEPA. An Automatic Changeover Switch will automatically switch off your generator and change over to MAIN ( Public power supply/NEPA) on resumption.You will save fuel and no risk of electrocution. It also serves as power surge protector for appliances. The main aim of any electric power supply in the world is to provide uninterrupted power supply at all times to all its consumers. Although, in developing countries, the electric power generated to meet the demands of the growing consumers of electricity is insufficient, hence power instability and outage.
Power instability or outage in general does not promote development in the public and private sector. The investors do not feel secure to come into a country with constant or frequent power failure. These limit the development of industries. In addition, there are processes that cannot be interrupted because of their importance for instance, surgery operation in hospitals, transfer of money between banks and lots more. Power instability and outage in developing countries (Nigeria) creates a need for alternative sources of power to backup the mains supply. Automatic changeover switches find a wide application scope wherever the reliability of electrical supply from the utilities is low and it is used in lighting/motor circuits wherever continuity of supply is necessary, for switching to an alternative source from main supply and vice versa...[read more to downlooad complete material]

0087]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC CHANGEOVER SWITCH: An Automatic Changeover Switch switches off the generator and automatically changes over to NEPA. An Automatic Changeover Switch will automatically switch off your generator and change over to MAIN ( Public power supply/NEPA) on resumption.You will save fuel and no risk of electrocution. It also serves as power surge protector for appliances. The main aim of any electric power supply in the world is to provide uninterrupted power supply at all times to all its consumers. Although, in developing countries, the electric power generated to meet the demands of the growing consumers of electricity is insufficient, hence power instability and outage.
Power instability or outage in general does not promote development in the public and private sector. The investors do not feel secure to come into a country with constant or frequent power failure. These limit the development of industries. In addition, there are processes that cannot be interrupted because of their importance for instance, surgery operation in hospitals, transfer of money between banks and lots more. Power instability and outage in developing countries (Nigeria) creates a need for alternative sources of power to backup the mains supply. Automatic changeover switches find a wide application scope wherever the reliability of electrical supply from the utilities is low and it is used in lighting/motor circuits wherever continuity of supply is necessary, for switching to an alternative source from main supply and vice versa...[read more to downlooad complete material]

0088]. DESIGN AND IMPLIMENTATION OF A 200A AUTOMATIC CHANGEOVER SWITCH WITH PHASE SELECTOR AND POWER FAILURE ALARM: This project work is on the design and construction of automatic changeover switch with phase selector and power failure alarm. It provides a means of switching from one phase of AC mains to another in the case of failure in the existing phase; it also changeover to generator if there is failure in all the three phases of the AC mains. The circuit also senses the restoration of any or all the three phases of the mains and changeover without any notice of power outage. This project has been improved on the existing types of electromechanical device that has being in use over the years.
Hence this has been achieved by the use of operational amplifier, timing circuit and high current relay switches and it is powered by 12V dc power supply. The aim of this work is to design and construct an Auto Phase Selector introduces an automatic solution to overcome power fluctuation/phase interruption by selecting next most healthy available phase to feed the equipment without any notice of power outage. The function of power failure alarm is to inform the loss of power supply in the whole system...[read more to downlooad complete material]

0089]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC CHANGEOVER SWITCH WITH PHASE MONITORING DEVICE: This project work is on the design and construction of automatic changeover switch. It provides a means of switching from one phase of AC mains to another in the case of failure in the existing phase; it also changeover to generator if there is failure in all the three phases of the AC mains. The circuit also senses the restoration of any or all the three phases of the mains and changeover without any notice of power outage. This project has been improved on the existing types of electromechanical device that has being in use over the years.
The aim of this work is to introduce an automatic solution to overcome power fluctuation/phase interruption by selecting next most healthy available phase to feed the equipment without any notice of power outage which is achieved by the use of operational amplifier, timing circuit and high current relay switches and it is powered by 12V dc power supply Hence this has been achieved by the use of operational amplifier, timing circuit and high current relay switches and it is powered by 12V dc power supply...[read more to downlooad complete material]

0090]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC CHANGEOVER SWITCH USING CONTACTOR: The Changeover Switch is a device used to switch off a power supply and subsequently switch on another power supply
An Automatic Changeover Switch switches off the generator and automatically changes over to NEPA. This Automatic Changeover Switch will automatically switch off your generator and change over to MAIN (Public power supply/NEPA) on resumption. You will save fuel and no risk of electrocution. It also serves as power surge protector for appliances.
The main aim of any electric power supply in the world is to provide uninterrupted power supply at all times to all its consumers. Although, in developing countries, the electric power generated to meet the demands of the growing consumers of electricity is insufficient, hence power instability and outage. The main switching device of the circuit is contactor...[read more to downlooad complete material]

0091]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC CHANGE OVER SWITCH (3.7KVA) : This work is on 3.7kva automatic change over switch. An Automatic Changeover Switch switches OFF the generator and automatically changes over to NEPA. An Automatic Changeover Switch will automatically switch off your generator and change over to MAIN ( Public power supply/NEPA) on resumption.
You will save fuel and no risk of electrocution. It also serves as power surge protector for appliances.
The main aim of any electric power supply in the world is to provide uninterrupted power supply at all times to all its consumers. Although, in developing countries, the electric power generated to meet the demands of the growing consumers of electricity is insufficient, hence power instability and outage.
Power instability or outage in general does not promote development in the public and private sector. The investors do not feel secure to come into a country with constant or frequent power failure. These limit the development of industries. In addition, there are processes that cannot be interrupted because of their importance for instance, surgery operation in hospitals, transfer of money between banks and lots more. Power instability and outage in developing countries (Nigeria) creates a need for alternative sources of power to backup the mains supply.
Automatic changeover switches find a wide application scope wherever the reliability of electrical supply from the utilities is low and it is used in lighting/motor circuits wherever continuity of supply is necessary, for switching to an alternative source from main supply and vice versa...[read more to downlooad complete material]

0092]. DESIGN AND CONSTRUCTION OF A 60A THREE PHASE AUTOMATIC CHANGEOVER SWITCH: This project work is on the design and construction of a 60A automatic changeover for 3-phase power supply. It provides a means of switching from one phase of AC mains to another in the case of failure in the existing phase; This project has been improved on the existing types of electromechanical device that has being in use over the years. Hence this has been achieved by the use of operational amplifier, timing circuit and high current relay switches and it is powered by 12V dc power supply. The aim of this work is to design and construct an Auto changeover introduces an automatic solution to overcome power fluctuation/phase interruption by selecting next most healthy available phase to feed the equipment without any notice of power outage...[read more to downlooad complete material]

0093]. CONSTRUCTION OF AUTOMATIC CHANGE OVER WITH GENERATOR TRIP OFF (USING A REMOTE CONTROL): As technological advancement has been on the increase in our society many have fallen in love with technology and world want to have a feel in virtually to every thing they do. An Automatic Changeover Switch switches off the generator and automatically changes over to NEPA. An Automatic Changeover Switch will automatically switch off your generator and change over to MAIN ( Public power supply/NEPA) on resumption. A design has been made in combination of electrical and electronics to change over from one power sources to the other automatically and trip off generator using a remote, and this remote can ON/OFF a generator from a far distance...[read more to downlooad complete material]

0094]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC CHANGEOVER FOR 3-PHASE POWER SUPPLY : This project work is on the design and construction of automatic changeover for 3-phase power supply. It provides a means of switching from one phase of AC mains to another in the case of failure in the existing phase; This project has been improved on the existing types of electromechanical device that has being in use over the years. Hence this has been achieved by the use of operational amplifier, timing circuit and high current relay switches and it is powered by 12V dc power supply. The aim of this work is to design and construct an Auto changeover introduces an automatic solution to overcome power fluctuation/phase interruption by selecting next most healthy available phase to feed the equipment without any notice of power outage...[read more to downlooad complete material]

0095]. DESIGN AND CONSTRUCTION OF A SINGLE PHASE  AUTOMATIC CHANGEOVER SWITCH WITH PHASE SELECTOR : This project work is on the design and construction of an automatic changeover with phase selector. It provides a means switching from generator set to PHCN on power resumption and at the same time switching from one phase of AC mains to another in the case of failure in the existing phase; This project has been improved on the existing types of electromechanical device that has being in use over the years. Hence this has been achieved by the use of operational amplifier, timing circuit and high current relay switches and it is powered by 12V dc power supply.The aim of this work is to design and construct an Auto changeover introduces an automatic solution to overcome power fluctuation/phase interruption by selecting next most healthy available phase to feed the equipment without any notice of power outage...[read more to downlooad complete material]

0096]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC CHANGEOVER SWITCH WITH GENERATOR TRIP-OFF DEVICE : The Change Over Switch is a device used to switch off a power supply and subsequently switch on another power supply. An Automatic Changeover Switch switches off the generator and automatically changes over to NEPA. An Automatic Changeover Switch will automatically switch off your generator and change over to MAIN ( Public power supply/NEPA) on resumption.This device save fuel and no risk of electrocution. It also serves as power surge protector for appliances. The system turns on a generator when the public utility (PHCN) is off by cranking the starter and a provision was made to stop cranking when the generator is fully started. A delay was provided to stop the generator five minutes after the PHCN is restored to avoid unnecessary off and on. A display that shows when PHCN or GEN is on was provided. The main aim of any electric power supply in the world is to provide uninterrupted power supply at all times to all its consumers. Although, in developing countries, the electric power generated to meet the demands of the growing consumers of electricity is insufficient, hence power instability and outage...[read more to downlooad complete material]

0097]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC PHASE SELECTOR FOR 3-PHASE POWER SUPPLY: This project work is on the design and construction of automatic phase selector for 3-phase power supply. It provides a means of switching from one phase of AC mains to another in the case of failure in the existing phase; This project has been improved on the existing types of electromechanical device that has being in use over the years.
Hence this has been achieved by the use of operational amplifier, timing circuit and high current relay switches and it is powered by 12V dc power supply. The aim of this work is to design and construct an Auto Phase Selector introduces an automatic solution to overcome power fluctuation/phase interruption by selecting next most healthy available phase to feed the equipment without any notice of power outage...[read more to downlooad complete material]

0098]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED AUTOMATIC 3-PHASE SELECTOR: In three phase equipment’s, if supply voltage is low in any of the one phase and you if you wish to run all the equipment properly. This equipment will help you to rescue this situation. However proper rating fuse need to be used in three phase i.e. R, Y, and B inputs lines. Where the correct voltage is available that time. Other low voltage phase shift to correct voltage in same manner, to run all the equipment on the single phase in the building. The circuit consist of relay comparator, transformer resistor and other minor electronics components...[read more to downlooad complete material]

0099]. DESIGN AND CONSTRUCTION OF A PHASE SEQUENCE CHECKER FOR THREE PHASE SUPPLY : The project is designed to provide uninterrupted AC mains supply i.e., 230 volt to a single phase load. This is achieved by automatic changeover of the load from the missing phase to the next available phase in a 3 phase system. It is often noticed that power interruption in distribution system is about 70% for single phase faults while other two phases are in normal condition. Thus, in any commercial or domestic power supply system where 3 phase is available, it is advisable to have an automatic changeover system for uninterrupted power to critical loads in the event of missing phase.
In this system auto selection is achieved by using a set of relays interconnected in such a way that if one of the relay feeding to the load remains energized always. Under the phase failure condition the corresponding step down transformer secondary delivers zero voltage which is duly rectified to DC and then fed to the logic gates comprising of AND & OR to switch on the next relay that delivers the power to the load. It also has a provision of connecting to an inverter source which delivers uninterrupted power to the load incase all the 3 phases go missing. The project is supplied with three transformers connected to the 3 phases supply. Further the project can be enhanced by incorporating power semiconductor devices such as thyristors/IGBTs for instantaneous changeover to the next available phase. This overcomes the drawback of the changeover time generally witnessed by relay switching operations...[read more to downlooad complete material]

0100]. DESIGN AND CONSTRUCTION PHASE SEQUENCE INDICATOR: Phase-Sequence Indicator is an electromagnetic or induction instrument used to indicate the phase sequence in three-phase electric circuits. The phase sequence determines the direction of rotation of three-phase electric motors; the correct operation of some measuring instruments and automatic control devices also depends on the phase sequence. Phase-sequence indicators are usually constructed as miniature asynchronous electric motors in which an aluminum disk serves as the rotor. The disk rotates when acted upon by a magnetic field excited by currents in three windings when the windings are connected to the conductors of the circuit being tested. A certain order of phase sequence is marked on the terminals of the phase-sequence indicator. If the disk rotates in the direction of an arrow marked on the disk, the phase sequence corresponds to the marks on the terminals of the instrument. General-purpose phase-sequence indicators can be used to determine the power factor and the phase shift between voltage and current...[read more to downlooad complete material]

0101]. DESIGN AND CONSTRUCTION OF A PHASE FAILURE CONTROLLER FOR THREE PHASE EQUIPMENT: Electrical power system engineering comprises power generation, transmission, distribution, and the utilization of electricity. Modern trends in the development of electric power systems explore means of improving efficiency in these stages mentioned. On the demand side, the protection of consumer equipment and appliances from damage and total destruction due to phase failures is an issue of paramount importance mainly in parts of the world with unsteady supply of electricity. In this work we took a detailed look into what a phase failure is and the possible causes. Then we finally explain the details of a method we have developed that controls cases of phase failure and takes the appropriate measure that will save the consumer loads from damages...[read more to downlooad complete material]

0103]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC TRANSFER SWITCH (ATS): Automatic Transfer Switch is a device for initiating an automatic changeover from mains supply to generator supply through many intermediate transfer stages which involves activating the fuel valve, choke valve and the generator starter. In an Automatic Transfer Switch, everything is fully automatic. When the utility power goes out, the transfer switch signals your generator to start. Once the generator is running the transfer switch automatically connects your home or business to the generator. When the utility power is restored, the transfer switch reconnects your home or business to the utility. Then it turns off your generator and waits for the next power outage. This helps you to save fuel costs and it is much safer because of its user-free operation. For example, in a home equipped with a backup generator and an ATS, when an electric utility outage occurs, the ATS will tell the backup generator to start. Once the ATS sees that the generator is ready to provide electric power, the ATS breaks the home's connection to the electric utility and connects the generator to the home's main electrical panel. The generator supplies power to the home's electric load, but is not connected to the electric utility lines. It is necessary to isolate the generator from the distribution system to protect the generator from overload in powering loads in the house and for safety, as utility workers expect the lines to be dead. When utility power returns for a minimum time, the transfer switch will transfer the house back to utility power and command the generator to turn off, after another specified amount of "cool down" time with no load on the generator...[read more to downlooad complete material]

0104]. THE DESIGN AND CONSTRUCTION A 220 VAC AUTOMATIC VOLTAGE STABILIZER : This project is titled the design and construction of a 220 AC Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line. An AC Automatic voltagestabilizer is designed to automatically maintain a constant AC voltage level. An AC Voltage Stabilizer may be a simple "feed-forward" design or may include negative feedback control loops. It makes use an electromechanical mechanism, and other electronic components. Depending on the design, it may be used to regulate one or more AC voltages. This project is designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 220V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. In this project, 220 ac was designed to control and stabilize an AC input voltage of 160-250V to produce an output of 220V all at 50Hz...[read more to downlooad complete material]

0105]. DESIGN AND CONSTRUCTION OF A 92.5MHz FM TRANSMITTER: An FM transmitter is an electronic device which, with the aid of an antenna, produces radio waves. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves. FM transmitter is basically a VHF colipits oscillator capable of transmitting sound or music to any standard FM receiver. The circuit works on a D.C source which makes it for a pure rectification. FM transmitter also has a capacitor microphone which picks up very weak sound signals. The FM transmitter was designed using transistors and other component such resistor, inductor and capacitors. This project transmits frequency on 92.5MHz± 5%. The transmitting distance is l00metres. It is powered with 5volt – 15volts D.C battery using suitable F.M receiver tuned to the transmitting frequency of this project. F.M Transmitter can be used as cordless microphones, mobile phone and for public address purposes. The distant of transmission is limited to 100m and fixed frequency of transmission, away from all other radio station. This gives best range and least interference...[read more to downlooad complete material]

0106]. DESIGN AND CONSTRUCTION OF A 500W SINEWAVE POWER INVERTER SYSTEM : This project is titled the design and construction of a pure sine wave inverter system. Pure sine wave inverters produce a pure sine wave output.  This means the power output from a pure sine wave inverter is the same as the mains supply. What you may not know is that not all inverters are created equal. The output from many inverters is a modified sine wave, inferior to the 220 volt mains power supply. Pure sine wave inverters produce a pure sine wave output. A pure sine wave is not only critical for the correct functioning of high end electronic equipment, it will also ensure that appliances run more smoothly, producing less heat and noise. Pure sinewave inverter take up 12v DC from battery and inverts it to an output of 220v, 50H2 AC. It makes no noise during operation and no hazardous carbon monoxide is generated in the surrounding. This is a feature that makes it safe to use any were when compared to generator. Also, the circuit is capable of charging the battery (i.e 12v source) when the power from the supply authority is on. This greatly reduces the cost of operation of the system...[read more to downlooad complete material] 

0107]. DESIGN AND CONSTRUCTION OF A 7.5KVA PURE SINEWAVE POWER INVERTER SYSTEM : Pure sine wave inverters produce a pure sine wave output.  This means the power output from a pure sine wave inverter is the same as the mains supply. What you may not know is that not all inverters are created equal. The output from many inverters is a modified sine wave, inferior to the 220 volt mains power supply. Pure sine wave inverters produce a pure sine wave output. A pure sine wave is not only critical for the correct functioning of high end electronic equipment, it will also ensure that appliances run more smoothly, producing less heat and noise. Pure sinewave inverter take up 12v DC from battery and inverts it to an output of 220v, 50H2 AC. It makes no noise during operation and no hazardous carbon monoxide is generated in the surrounding.    This is a feature that makes it safe to use any where when compared to generator. Also, the circuit is capable of charging the battery (i.e 12v source) when the power from the supply authority is on. This greatly reduces the cost of operation of the system...[read more to downlooad complete material]

0108]. DESIGN AND CONSTRUCTION A 200W AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of a 200w Automatic Voltage Stabilizer. A voltage stabilizer is an electrical appliance used to feed constant voltage current to electrical gadgets like ACs and computers, and protects them from damage due to voltage fluctuations. It works on the principle of a transformer, where the input current is connected to primary windings and output is received from secondary windings. When there is a drop in incoming voltage, it activates electromagnetic relays which add to more number of turns in the secondary winding, thus giving higher voltage which compensates for loss in output voltage. When there is rise in the incoming voltage, the reverse happens, and, thus, the voltage at the output side remains almost unchanged. This project was designed to stabilize an AC input voltage of 160-250V to give an AC output voltage of 220V at 50Hz automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices...[read more to downlooad complete material]

0109]. DESIGN AND CONSTRUCTION OF 200W UNINTERRUPTIBLE POWER SUPPLY:UPS are designed so that there is one source of power normally used called the primary power source and another source that kicks in if the primary is disrupted called the secondary power source. The power from the wall is always one of those sources and the battery contains within the UPS is the other. A switch is used to control each of these powers and the equipment of any given time. The switch changes from the primary of the secondary when it detects the primary has gone out. It switches back from the secondary power the primary power, source has returned...[read more to downlooad complete material]

0110]. DESIGN AND CONSTRUCTION OF AN UNTERUTIBLE POWER SUPPLY USING MICROPROCESSOR WITH LOW BATTERY ALARM: The purpose of this project is to design and construct an uninterruptible power supply. Uninterruptible power supply is a voltage regulatory and uninterruptible power device planned to electromechanically sustain a constant voltage level and supply an uninterruptible power to devices.
This device receive minimum voltage of 120vac and maximum of 260vac and filter the current and voltage thereby brings out suitable voltage output to be used by the devices in it, then when there an unexpected power outage from the utility mains or generator the system will automatically switch over to the inverter source thereby providing additional power to the appliances in use without interruption.
This device stabilizes an AC input voltage of 120-260V to give an AC output voltage of 240V, provide a rechargeable backup power supply the system and also provide low battery indication automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices...[read more to downlooad complete material]

0112]. DESIGN AND CONSTRUCTION OF 500W UNINTERRUPTIBLE POWER SUPPLY : This device stabilizes an AC input voltage of 120-260V to give an AC output voltage of 240V, provide a rechargeable backup power supply the system and also provide low battery indication automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices...[read more to downlooad complete material]

0113]. DESIGN AND CONSTRUCTION OF 1000W UNINTERRUPTIBLE POWER SUPPLY: This device receive minimum voltage of 120vac and maximum of 260vac and filter the current and voltage thereby brings out suitable voltage output to be used by the devices in it, then when there an unexpected power outage from the utility mains or generator the system will automatically switch over to the inverter source thereby providing additional power to the appliances in use without interruption.
This device stabilizes an AC input voltage of 120-260V to give an AC output voltage of 240V, provide a rechargeable backup power supply the system and also provide low battery indication automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. The purpose of this project is to design and construct an uninterruptible power supply. Uninterruptible power supply is a voltage regulatory and uninterruptible power device planned to electromechanically sustain a constant voltage level and supply an uninterruptible power to devices...[read more to downlooad complete material]

0114]. DESIGN AND CONSTRUCTION OF 1.5KVA UNINTERRUPTIBLE POWER SUPPLY: This device receive minimum voltage of 120vac and maximum of 260vac and filter the current and voltage thereby brings out suitable voltage output to be used by the devices in it, then when there an unexpected power outage from the utility mains or generator the system will automatically switch over to the inverter source thereby providing additional power to the appliances in use without interruption.
This device stabilizes an AC input voltage of 120-260V to give an AC output voltage of 240V, provide a rechargeable backup power supply the system and also provide low battery indication automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. The purpose of this project is to design and construct an uninterruptible power supply. Uninterruptible power supply is a voltage regulatory and uninterruptible power device planned to electromechanically sustain a constant voltage level and supply an uninterruptible power to devices...[read more to downlooad complete material]

0115]. DESIGN AND CONSTRUCTION OF 2.5KVA UNINTERRUPTIBLE POWER SUPPLY : This device receive minimum voltage of 120vac and maximum of 260vac and filter the current and voltage thereby brings out suitable voltage output to be used by the devices in it, then when there an unexpected power outage from the utility mains or generator the system will automatically switch over to the inverter source thereby providing additional power to the appliances in use without interruption.
This device stabilizes an AC input voltage of 120-260V to give an AC output voltage of 240V, provide a rechargeable backup power supply the system and also provide low battery indication automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. The purpose of this project is to design and construct an uninterruptible power supply. Uninterruptible power supply is a voltage regulatory and uninterruptible power device planned to electromechanically sustain a constant voltage level and supply an uninterruptible power to devices...[read more to downlooad complete material]

0116]. DESIGN AND CONSTRUCTION OF 2KVA UNINTERRUPTIBLE POWER SUPPLY: This device receive minimum voltage of 120vac and maximum of 260vac and filter the current and voltage thereby brings out suitable voltage output to be used by the devices in it, then when there an unexpected power outage from the utility mains or generator the system will automatically switch over to the inverter source thereby providing additional power to the appliances in use without interruption.
This device stabilizes an AC input voltage of 120-260V to give an AC output voltage of 240V, provide a rechargeable backup power supply the system and also provide low battery indication automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. The purpose of this project is to design and construct an uninterruptible power supply. Uninterruptible power supply is a voltage regulatory and uninterruptible power device planned to electromechanically sustain a constant voltage level and supply an uninterruptible power to devices...[read more to downlooad complete material]

0117]. DESIGN AND CONSTRUCTION OF 3.5KVA UNINTERRUPTIBLE POWER SUPPLY: This device receive minimum voltage of 120vac and maximum of 260vac and filter the current and voltage thereby brings out suitable voltage output to be used by the devices in it, then when there an unexpected power outage from the utility mains or generator the system will automatically switch over to the inverter source thereby providing additional power to the appliances in use without interruption.
This device stabilizes an AC input voltage of 120-260V to give an AC output voltage of 240V, provide a rechargeable backup power supply the system and also provide low battery indication automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices. The purpose of this project is to design and construct an uninterruptible power supply. Uninterruptible power supply is a voltage regulatory and uninterruptible power device planned to electromechanically sustain a constant voltage level and supply an uninterruptible power to devices...[read more to downlooad complete material]

0118]. DESIGN AND CONSTRUCTION OF 20KVA UNINTERRUPTIBLE POWER SUPPLY: This device receive minimum voltage of 120vac and maximum of 260vac and filter the current and voltage thereby brings out suitable voltage output to be used by the devices in it, then when there an unexpected power outage from the utility mains or generator the system will automatically switch over to the inverter source thereby providing additional power to the appliances in use without interruption.
This device stabilizes an AC input voltage of 120-260V to give an AC output voltage of 240V, provide a rechargeable backup power supply the system and also provide low battery indication automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices...[read more to downlooad complete material]

0119]. DESIGN AND CONSTRUCTION OF 10KVA UNINTERRUPTIBLE POWER SUPPLY: This device receive minimum voltage of 120vac and maximum of 260vac and filter the current and voltage thereby brings out suitable voltage output to be used by the devices in it, then when there an unexpected power outage from the utility mains or generator the system will automatically switch over to the inverter source thereby providing additional power to the appliances in use without interruption.
This device stabilizes an AC input voltage of 120-260V to give an AC output voltage of 240V, provide a rechargeable backup power supply the system and also provide low battery indication automatically. The automatic feature can be achieved by the electronics devices used such voltage comparator IC, electro-magnetic device (relay), auto- transformer and other electronics devices...[read more to downlooad complete material]

0120]. DESIGN AND CONSTRUCTION OF A 500W SOLAR POWER INVERTER :This work is on solar inverter, which is an electrical powering device that converts direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection...[read more to downlooad complete material]

0121]. DESIGN AND CONSTRUCTION OF A 1KVA SOLAR POWER INVERTER:Solar inverter converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. In solar inverter, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC...[read more to downlooad complete material]

0122]. DESIGN AND CONSTRUCTION OF A 1.5KVA SOLAR POWER INVERTER:Solar inverter converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. In solar inverter, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC...[read more to downlooad complete material]

0123]. DESIGN AND CONSTRUCTION OF A 2KVA SOLAR POWER INVERTER: Solar inverter converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. In solar inverter, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC...[read more to downlooad complete material]

0124]. DESIGN AND CONSTRUCTION OF A 2.5KVA SOLAR POWER INVERTER:Solar inverter converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. In solar inverter, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC...[read more to downlooad complete material]

0125]. DESIGN AND CONSTRUCTION OF A 3.5KVA SOLAR POWER INVERTER: Solar inverter converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. In solar inverter, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC...[read more to downlooad complete material]

0126]. DESIGN AND CONSTRUCTION OF A 5KVA SOLAR POWER INVERTER:Solar inverter converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. In solar inverter, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC...[read more to downlooad complete material]

0127]. DESIGN AND CONSTRUCTION OF A 10KVA SOLAR POWER INVERTER: Solar inverter converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. In solar inverter, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC...[read more to downlooad complete material]

0128]. DESIGN AND CONSTRUCTION OF A 500W POWER INVERTERS (WITH 12V*2 BATTERY AND 220VAC) : This project is on design and construction of a 5KVA inverter with input battery 24V to Output 220Vac 50Hz. A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC). The input voltage, output voltage and frequency, and overall power handling, are dependent on the design of the specific device or circuitry...[read more to downlooad complete material]
0129]. DESIGN AND CONSTRUCTION OF A 5KVA DC TO AC POWER INVERTER USING 24VOLT DC AND 8 RECHARGEABLE BATTERY: This project is on design and construction of a 5KVA inverter with input battery 24V to Output 220Vac 50Hz. A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC). The input voltage, output voltage and frequency, and overall power handling, are dependent on the design of the specific device or circuitry.
A typical power inverter device or circuit will require a relatively stable DC power source capable of supplying enough current for the intended overall power handling of the inverter. Possible DC power sources include: rechargeable batteries, DC power supplies operating off of the power company line, and solar cells. The inverter does not produce any power, the power is provided by the DC source. The inverter translates the form of the power from direct current to an alternating current waveform. The level of the needed input voltage depends entirely on the design and purpose of the inverter. In many smaller consumer and commercial inverters a 24V DC input is popular because of the wide availability of powerful rechargeable 24V DC power source. The aim of this inverter is construct a 5kva inverter with a 24v input dc supply (with 8 battery) which  comprises of  inbuilt automatic charger- which can charge an acid lead rechargeable battery and at same time turn-turn off the charger or stop charging the battery whenever the battery charge fully...[read more to downlooad complete material]

0130]. DESIGN AND CONSTRUCTION OF A DC TO AC POWER INVERTER INCORPORATED WITH BATTERY CHARGER: A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC). The input voltage, output voltage and frequency, and overall power handling, are dependent on the design of the specific device or circuitry.
A typical power inverter device or circuit will require a relatively stable DC power source capable of supplying enough current for the intended overall power handling of the inverter. Possible DC power sources include: rechargeable batteries, DC power supplies operating off of the power company line, and solar cells. The inverter does not produce any power, the power is provided by the DC source. The inverter translates the form of the power from direct current to an alternating current waveform.
The aim of this inverter is construct a power inverter with a 12v input dc supply (battery) which  comprises of  inbuilt automatic charger- which can charge an acid lead rechargeable battery and at same time turn-turn off the charger or stop charging the battery whenever the battery charge fully...[read more to downlooad complete material]

0131]. THE DESIGN AND CONSTRUCTION OF AUTOMATIC FENCE LIGHT CONTROLLER : This project work is titled automatic fence light controller. The project, construction of automatic fence light controller was designed to trigger a relay to operate security AC lamp at Sunset. The lamp remains on till morning and then turns off. This eliminates the need of switching the fence lamp daily and also helps to light the premises of the house when the occupants are out of station...[read more to downlooad complete material]

0132]. DESIGN AND CONSTRUCTION OF LIGHT SENSITIVE ALARM : This project work is on the construction of light sensitive alarm. Which aim at activating an alarm at sunrise and deactivate it at sunset. This light sensitive alarm can triggers an alarm at sunrise indicating that there is daylight. The lamp remains ON till dark hour and then turns off.
The circuit utilizes the light sensing property of LDR to activate the circuit. The LDR (Light Dependent Resistor) has very high resistance as high as 10 Meg ohms in dark which reduces to a few Ohms in bright light...[read more to downlooad complete material]

0133]. DESIGN AND CONSTRUCTION OF A DARK ACTIVATED ALARM : This project work is on the construction of dark activated alarm. Which aimed at activating a switch or AC lamp at sunset and deactivate it at sunrise. This Dark activated Switch can trigger a relay to operate an AC lamp at Sunset. The lamp remains on till morning and then turns off. This eliminates the need of switching the Porch lamp or Backyard lamp daily and also helps to light the premises of the house when the occupants are out of station.The circuit utilizes the light sensing property of LDR to activate the circuit. The LDR (Light Dependent Resistor) has very high resistance as high as 10 Meg ohms in dark which reduces to a few Ohms in bright light...[read more to downlooad complete material]

0134]. DESIGN AND CONSTRUCTION OF A RAIN DETECTOR (ALARM):Due to the rate of damages that occur to our industrials and homes possessions during rainfall. This rain alarm will give you an alarm indication  the instant it starts to rain, hopefully giving you time to close windows and bring in possessions in our homes and to keep so many of our industrial machines in a proper place.  The alarm has also the ability to indicate when it stops raining, by that time the alarm will stop. This project was designed to indicate when it is raining and also to indicate when the rain has stop. Apart from these two applications, there are other applications that this alarm has which would be mentioned in this work...[read more to downlooad complete material]

0135]. DESIGN AND CONSTRUCTION OF A RAIN OPERATED WIPER : In the present automobiles the number of facilities is much higher. The driver has to concentrate on road while driving, and with increased traffic, things get frustrating. The features in the car like GPRS to trace the route, music system, air condition system etc may drive away the attention of the driver. Thus an effort has been made to reduce the effort put by driver in controlling the speed of the wiper and put more concentration on his driving. Since this system is put into use in many higher end cars and has been successfully working, an effort was made to reduce the cost of the system so that this system can be implemented in common economic cars where a common man can also enjoy the benefits. In section II, the detail explanation about designing aspects of the system is given. In section III the working procedure of the system is given. Vehicles are now available with driver-programmable intelligent (automatic) windscreen wipers that detect the presence and amount of rain using a rain sensor. The sensor automatically adjusts the speed of the blades according to the amount of rain detected. The battery supplies the power to the sensor as well as rain operated motor. Wiper motor is automatically ON during the time of rainfall. The senor is fixed in the vehicle glass. The conductive (Touch) sensor is used in this project. It senses the rainfall and giving control signal to the control unit. The control unit activates the wiper motor automatically. This operation is called “Automatic rain operated...[read more to downlooad complete material]

0136]. DESIGN AND CONSTRUCTION OF A WATER LEVEL INDICATOR WITH SINGLE 7 SEGMENT LED DISPLAY: Water Level Indicator is an electronic device that is designed to detect the presence of water and provide an alert in time to allow the prevention of water damage. A common design is a small cable or device that lies flat on a floor and relies on the electrical conductivity of water to decrease the resistance across two contacts. The device then sounds an audible alarm or display through an indicating device together with providing onward signaling in the presence of enough water to bridge the contacts. These are useful in a normally occupied area near any infrastructure that has the potential to leak water, such as HVAC, water pipes, drain pipes, vending machines, dehumidifiers, or water tanks ...[read more to downlooad complete material]

0137]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED WATER LEVEL CONTROLLER USING 89C52:The Water Level Controller System is an Electronic Equipment which when electrically connected to the starter of any given pump -set motor will control the operation of the pump- set depending upon the water level in the Source and Destination Storage Tanks. It Switches ON the Pump-set when Water level drops below pre-set level (i.e. T2 level) in Overhead Tank, Switches OFF the Pump-set when Water level in Overhead Tank becomes full (i.e. T1 level),Switches OFF the Pump-set when Water level is low in tank (i.e. S2 level), and Switches ON the Pump-set when there is sufficient water in the tank.
This work is aim at constructing an automatic water level controller that will control the flow and pumping of water in the overhead and underground tank which is controlled by 89c52 microcontroller...[read more to downlooad complete material]

0138]. DESIGN AND CONSTRUCTION OF A WATER LEVEL INDICATOR: This project is titled the design and construction of a water level sensor system. It is designed to indicate the level of water to over-head tank. The circuit uses the widely available CD4066, bilateral switch CMOS IC to indicate the water level through LEDs.When the water is empty the wires in the tank are open circuited and the 180K resistors pulls the switch low hence opening the switch and LEDs are OFF. As the water starts filling up, first the wire in the tank connected to S1 and the + supply are shorted by water. This closes the switch S1 and turns the LED1 ON. As the water continues to fill the tank, the LEDs2 , 3 and 4 light up gradually. The no. of levels of indication can be increased to 8 if 2 CD4066 ICs are used in a similar fashion. When the water is full, the base of the transistor BC148 is pulled high by the water and this saturates the transistor, turning the buzzer ON. The SPST switch has to be opened to turn the buzzer OFF...[read more to downlooad complete material]

0139]. DESIGN AND CONSTRUCTION OF A MOTION BASED AUTOMATIC DOOR OPENNER :The project is titled design and construction of an automatic gate opener using motion detecting sensor. Opening and closing of doors is always a tedious job, especially in places like shopping malls, hotels and theatres where a person is always required to open the door for visitors. This project proposes a system of automatic opening and closing of door by using sensors. The PIR sensor transmitter emit infrared radiation  from a considerable distance and sends it to the receiver, commanding the receiver to either open the gate or to close it. This sensing signal is fed to a controller to operate a door motor through motor driver IC. The sensor sends a logical command to open the door. The door automatically closes with a fixed time delay...[read more to downlooad complete material]

0140]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC WATER LEVEL INDICATOR (WITH TRANSISTOR): This project is titled the design and construction of a water level sensor system. It is designed to indicate the level of water to over-head tank. In this system, transistors are used; all the transistors are working as a switch. When the water touches the metal contact in which base of each transistor is connected, small current flows and turns on the transistor. When a transistor turns on, LED connected to it glows.  Thus LEDs will be turned on depending up on the level of water.When the water is empty the wires in the tank are open circuited and the  resistors pulls the switch low hence opening the switch and LEDs are OFF and vice-versa...[read more to downlooad complete material]

0141]. DESIGN AND CONSTRUCTION OF AN AUTOMOBILE FUEL LEVEL INDICATOR: Automobile fuel level indicator is an instrument used to indicate the level of fuel contained in a tank. Commonly used in most motor vehicles, these may also be used for any tank including underground storage tanks...[read more to downlooad complete material]

0142]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC WATER LEVEL INDICATOR WITH ALARM : This project is titled the design and construction of a water level sensor system. It is designed to indicate the level of water to over-head tank. This device is unique because this water level indicator circuit also has an alarm feature. It not only indicates the amount of water present in the overhead tank but also gives an alarm when the tank is full...[read more to downlooad complete material]

0143]. DESIGN AND CONSTRUCT A SINGLE PHASE AUTO-TRANSFORMER OF RATING 1KVA, AND STEP DOWN VOLTAGE OF 240V AND VOLTAGE TAPS OF 120, 48, 24V, 12V: The project presents here is on design and construct a single phase auto-transformer of rating 1kva, and step down voltage of  240v and voltage taps of 120, 48, 24v, 12v.An autotransformer is an electrical transformer with only one winding. In an autotransformer portions of the same winding act as both the primary and secondary. The winding has at least three taps where electrical connections are made. Autotransformers have the advantages of often being smaller, lighter, and cheaper than typical dual-winding transformers, but autotransformers have the disadvantage of not providing electrical isolation...[read more to downlooad complete material]

0144]. DESIGN AND CONSTRUCTION OF A 4-CHANNEL AUDIO MIXER: An audio mixer is an electronic device for combining, and modifying audio signals. The modified audio signals are summed to produce some combined output signals. This project is titled design and construction of a 4-channel microphone mixer. A microphone mixer is an electronic console that is used to mix different recorded tracks by changing their volume levels, adding effects and changing the timbre of each instrument on the tracks. Audio mixers are also called mixing consoles and soundboards...[read more to downlooad complete material]

0145]. DESIGN AND CONSTRUCTION OF A 3-CHANNEL MICROPHONE MIXER : A microphone mixer is an electronic console that is used to mix different recorded tracks by changing their volume levels, adding effects and changing the timbre of each instrument on the tracks. Audio mixers are also called mixing consoles and soundboards...[read more to downlooad complete material]

0146]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC WATER LEVEL CONTROLLER WITH WATER HEATER COMPARTMENT: This project is titled the design and construction of an automatic water level controller system with water heater compartment. It is designed to control flow and pumping of water to over-head tank and at the same time heat the water in the heat compartment for human usage.
The Water Level Controller System is an Electronic Equipment which when electrically connected to the starter of any given pump -set motor will control the operation of the pump- set depending upon the water level in the Source and Destination Storage Tanks...[read more to downlooad complete material]

0147]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC DOOR ALARM USING PIR SENSOR : This project is titled the design and construction of an automatic door alarm system using passive infrared. It is designed to indicate when someone or an intruder opens the door of homes or industries. A security gate system is designed to be placed on door in homes to provide security by alerting the residents that the gate is being opened. When a door is opened the buzzer will beep indicating that the gate is opened. The buzzer sounds at 110 or 120 decibels. That sound level is loud enough to be heard throughout most homes. However, the aim of this project is to design a security door alarm system that will give an indication whenever any door in a home is opened through an infrared beam...[read more to downlooad complete material]

0148]. DESIGN, CONSTRUCTION AND ANALYSIS OF A 2KVA AUTOMATIC VOLTAGE REGULATORY SYSTEM WITH SEVEN SEGMENT DISPLAY: Voltage delivered to our home, office or industries may sometimes fluctuate which can cause serious damages to your appliance; if not completely destroying it. Nonetheless, other sophisticated devices subjected to voltage fluctuations could malfunction and have reduced efficiency, which are costly in terms of downtime and rejects.
Most electrical and electronic equipment are designed to operate properly and within their specifications if the voltage supply varies within ±10% of nominal. However, some sensitive devices require stable incoming voltage for them to perform accurately, such as computers, medical laboratories, telecommunications and test equipment, but when electric fluctuation occur it can cause computerized or automatic machines to produce defective parts, unwanted triggering of appliances, system malfunction, testing equipment to give inaccurate data, nuisance tripping due to misoperation of relays and contactors, inconsistency of motor speed. In order to avoid all these effects, an automatic voltage regulatory system is employed which is an electronic device or circuit that maintains an output voltage to be consistent to its load current. This AVR has a servomechanism that hunts the accurate voltage when surges happen in order to maintain the needed voltage level that ultimately protects your appliance...[read more to downlooad complete material]

0149]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC DOOR BELL WITH OBJECT DETECTION: Automatic Door Bell with Object Detection detects when a visitor comes to our house. When someone comes to our house and he searches for the doorbell switch and then rings it to let us know his presence. If the who came to our house cannot find the doorbell or else if the person is so short that he cannot reach the doorbell, what can be done? How will it be if we use an automatic doorbell which rings as soon as a person arrives at our place? There are no more hassles. The person who comes to our house need not search for the doorbell and press it any more. If we install this automatic doorbell using object detection circuit, the circuit will automatically sense the presence of the person and it rings the doorbell...[read more to downlooad complete material]

0150]. DESIGN AND CONSTRUCTION AN AUTO TURN-OFF BATTERY CHARGER: This project is titled design and construction of an auto turn off battery charger. Automatic battery charger presented here is an acid battery charger that is designed to charge cell phone. An Auto turn off battery charger proceeds to charge battery automatically. When the battery is charged it will shut off. The objective of this project is to design and construct an electronic device that will supply electrical energy (charges) to a cell phone battery, in a process to restore the battery's used up energy...[read more to downlooad complete material]

0151]. ASSEMBLING OF PENTIUM-4 COMPUTER : In this particular project is on assembling of a Pentium 4 computer. The Pentium 4 is a type, or class, of computer processor developed and manufactured by Intel. The Pentium 4 processor was a single core processor, used in desktop and laptop computers. The first Pentium 4 processor was codenamed Willamette and was capable of speeds from 2.2 GHz to 3.0 GHz...[read more to downlooad complete material]


0152]. ASSEMBLING OF COMPUTER SYSTEM : This project work is assembling of computer system. Computer system generally refers to a set of electronics hardware components assembled together for the purpose of performing some basic operation with much regard to speed and accuracy. A lot of people may want to see a computer system as a machine which specializes in taking information from the outside world, process the information according to some pre determined set of instructions and give out the processed information in a given from according to the predetermined instructions. The computer system can be viewed from much perspective depending on the users view. In all this the computer system consists of two parts to carry out its function properly. (1) The hardware component (Ii) The software component. (i) The hardware component in a computer refers to the physical parts that are assembled together to carry out the function. ii) The software refers to the set of instructional codes called programs which the computer depend upon for its effective operation. Another way of describing a computer is in terms of what the computer is capable of doing, we can look at the role of computer n data processing, numerical computation, workstations automatic control systems and electronic systems. In this particular project is on assembling of a Pentium 4 computer. The Pentium 4 is a type, or class, of computer processor developed and manufactured by Intel. The Pentium 4 processor was a single core processor, used in desktop and laptop computers. The first Pentium 4 processor was codenamed Willamette and was capable of speeds from 2.2 GHz to 3.0 GHz ...[read more to downlooad complete material]

0153]. ASSEMBLING OF PENTIUM-4 COMPUTER WITH MULTIPURPOSE PRINTER AND UPS : This project work is assembling of pentium-4 computer with multipurpose printer and ups. The computer system generally refers to a set of electronics hardware components assembled together for the purpose of performing some basic operation with much regard to speed and accuracy. A lot of people may want to see a computer system as a machine which specializes in taking information from the outside world, process the information according to some pre determined set of instructions and give out the processed information in a given from according to the predetermined instructions. This particular project is on assembling of a Pentium 4 computer. The Pentium 4 is a type, or class, of computer processor developed and manufactured by Intel. The Pentium 4 processor was a single core processor, used in desktop and laptop computers. The first Pentium 4 processor was codenamed Willamette and was capable of speeds from 1.3 GHz to 2 GHz and the system was assembled with a multipurpose printer (which is used for photocopying, printing and scanning) and UPS (used for sustaining the power of the system for a short period of time during mains power outage)...[read more to downlooad complete material]

0154]. ASSEMBLING OF A COMPUTER COMPONENTS : This project work is assembling of computer components. Computer system generally refers to a set of electronics hardware components assembled together for the purpose of performing some basic operation with much regard to speed and accuracy The computer system can be viewed from much perspective depending on the users view. In all this the computer system consists of two parts to carry out its function properly: The hardware component and the software component. The hardware component in a computer refers to the physical parts that are assembled together to carry out the function. The software refers to the set of instructional codes called programs which the computer depend upon for its effective operation. The assembling of both hardware and software is what makes a complete computer system. In this particular project, a computer component is to be assembled...[read more to downlooad complete material]

0155]. ASSEMBLING OF HIGH AND LOW VOLTAGE TRANSMISSION LINE ACCESSORIES : Electric power transmission is the process by which large amounts of electricity produced at power plants, such as industrial-scale solar facilities, are transported over long distances for eventual use by consumers. In Nigeria, electricity is sent from power plants to the National transmission grid, a vast network of electric power lines. Due to the large amount of power involved, and the properties of electricity, transmission normally takes place at high voltage (69 kV or above). And in order to setup a working transmission line, all the accessories must be put in place both for low and high voltage transmission. Assembling of high and low voltage transmission line accessories is the process of gathering all the power transmission wiring accessories in order to have complete power transmission system...[read more to downlooad complete material]

0156]. DESIGN AND CONSTRUCTION OF POWER FAILURE ALARM WITH AUTO GENERATOR STARTING DEVICE : For us to be notified when the power off condition has occurred a power failure signal device is used. This system indicates when there is power failure through alarm indication. As soon as the system experiences power failure you will receive a signal from an alarm and at the same time automatically power an auto-powering generator through a high current relay. Power Outage signal notifies you by alarm when your electrical equipment suffers a power outage. If you have important equipment running and want to know if there has been a power cut while you're not around, this app can help. From Freezers to Fish Tanks and all things electrical, Power Outage Alarm can provide you with additional peace of mind...[read more to downlooad complete material]

0157]. DESIGN AND CONSTRUCTION OF A SINGLE PHASE AUTOMATIC CHANGEOVER SWITCH: The Changeover Switch is a device used to switch off a power supply and subsequently switch on another power supply.
An Automatic Changeover Switch switches off the generator and automatically changes over to NEPA. This Automatic Changeover Switch will automatically switch off your generator and change over to MAIN (Public power supply/NEPA) on resumption. You will save fuel and no risk of electrocution. It also serves as power surge protector for appliances. The main aim of any electric power supply in the world is to provide uninterrupted power supply at all times to all its consumers. Although, in developing countries, the electric power generated to meet the demands of the growing consumers of electricity is insufficient, hence power instability and outage...[read more to downlooad complete material]

0158]. DESIGN AND CONSTRUCTION OF POWER BOOSTER/ POWER OPTIMIZER: Gone are the days when you wait for NEPA and PHCN before you use your appliances. Iron booster is a cautioner between the supplier and the load. This booster can be plugged to small generator like tiger generator and bigger generators. It does not affect the sound of the generator neither will it destroy your generator set in any ways. It will help you to plug your iron and other heating elements in the output of your generating plant without damage to your generator coil e.g: Ironing of clothes, water heater, electric kettle, microwave, electric cooker/Hot plate, toaster, and blender. The consumption rate is small to allow you plug other things like: Tv, Fan, light bulbs, computer, phone charger and stereo system. The booster enhances and prolongs the life of your generator by absorbing the pressure from your high current appliances. Has no contact with your generator and therefore does not harm the Coil No damage to generator. It lightens the load plugged on it. It can also be used with electricity (NEPA Lights). You can use it with small and big generator plants it reduces quantity of current that is flowing to the appliances from pre-paid meter. The booster economizes your energy consumption...[read more to downlooad complete material]

0159]. DESIGN AND CONSTRUCTION OF POWER BOOSTER DEVICE USING IRONING AND HEATING ELEMENT ON A 650W GENERATOR : This work is on power booster device, that is, using ironing and heating element on a 650w generator. This booster can be plugged to small generator like tiger generator and bigger generators. It does not affect the sound of the generator neither will it destroy your generator set in any ways. It will help you to plug your iron and other heating elements in the output of your generating plant without damage to your generator coil e.g: Ironing of clothes, water heater, electric kettle, microwave, electric cooker/Hot plate, toaster, and blender...[read more to downlooad complete material]

0160]. DESIGN AND CONSTRUCTION OF POLICE SIREN USING 555 TIMERS : A police siren is a loud electronics device that produces sound similar to police siren. Police siren is used to get other road users or drivers on the road out of their way.
Electronic sirens incorporate circuits such as oscillators, modulators, and amplifiers to synthesize a selected siren tone (wail, yelp, pierce/priority/phaser, hi-lo, scan, air horn, manual, and a few more) which is played through external speakers. It is not unusual, especially in the case of modern fire engines, to see an emergency vehicle equipped with both types of sirens. Often, police sirens also use the interval of a tri-tone to help draw attention. This police siren simulated electronic project uses two 555 timers IC to generate a sound similar to the police siren. A single 556 timer IC which consists of two 555 timers can also be used. In this circuit, both of the timers are configured as astable circuit. The first timer is configured as a square wave close to 1 Hz astable oscillator. The output of this timer is used to feed the control voltage of the second timer where it is subjected to frequency modulation. This frequency modulation will generate a tone similar to the siren used by the police...[read more to downlooad complete material]

0161]. DESIGN AND CONSTRUCTION OF A POWER BANK: Portable Power Banks are comprised of a special battery in a special case with a special circuit to control power flow. They allow you to store electrical energy (deposit it in the bank) and then later use it to charge up a mobile device...[read more to downlooad complete material]

0162]. DESIGN AND CONSTRUCTION OF A THYRISTOR SPEED CONTROL OF A DC MOTOR: DC motors are widely used in industries because of its versatile characteristics and because of power electronics devices its controlling is becoming sophisticated and precise, but on the other hand because of the power electronics devices power factor and total harmonics distortion problem is becoming more prominent. In this paper DC motor control methodology is proposed which includes thyristor based converters but with improved power factor and total harmonics distortion...[read more to downlooad complete material]

0163]. DESIGN AND CONSTRUCTION OF A DC MOTOR CONTROLLER USING CHOPPER: The speed control of separately excited dc motor is carried out by varying the armature voltage for below rated speed and by varying field flux to achieve speed above the rated speed. This thesis presents the speed control methodology by varying armature voltage using chopper by providing control signal to the switches. Speed can be controlled from below and up to rated speed .The firing circuit of chopper receives signal from controller and variable voltage is given to the armature of dc motor according to the desired speed .There are two controllers we are using here one is speed controller and other is current controller. Both controllers are of proportional - integral type. The reason behind using PI type controller is it removes the delay and provides fast control...[read more to downlooad complete material]

0164]. DESIGN AND CONSTRUCTION OF A CLAP ACTIVATED SWITCH : Clap activated switch is an electronics device that can switch on & off a light, Fan, Radio or any other appliance by the sound of clap. This is the system of a very sensitive clap switch. It switches ON/OFF a White LED or electrical appliances through claps. The circuit can sense the sound of claps from a distance of 1-2 meters. Condenser Mic picks up sound vibrations caused by the clap. These sound vibrations are given to the inverting input (pin2) of IC1. It amplifies the sound collected by the Mic. Resistor R2, R3 and variable resistor VR1 adjust the sensitivity of the amplifier. Resistor R1 set the sensitivity of Mic. The amplified output pulses from IC1 passes to the input of IC2 (CD 4017). Resistor R4 keeps the input (pin14) of IC2 low so as to prevent false triggering. IC2 is a decade counter IC which is wired as a toggle switch. That its outputs 1 and 2 (pins 2 and 3) becomes high and low when the input pin14 receives pulses. Pin4 (output4) is connected to the reset pin15 so that further counting will be inhibited...[read more to downlooad complete material]

0165]. DESIGN AND CONSTRUCTION OF A CLAP ACTIVATED SWITCH USING TRANSISTORS : Clap activated switch is an electronics device that can switch on and off a light, Fan, Radio or any other appliance by the sound of clap. 
This is the system of a very sensitive clap switch. It switches ON/OFF a White LED or electrical appliances through claps. The circuit can sense the sound of claps from a distance of 1-2 meters. Condenser Mic picks up sound vibrations caused by the clap.
This device was built around transistors. These sound vibrations are given to the base of transistors. It amplifies the sound collected by the Mic...[read more to downlooad complete material]

0166]. DESIGN AND CONSTRUCTION OF PASSIVE INFRARED (PIR) BASED AUTOMATIC DOOR ALARM SYSTEM: The project is on a passive infrared (PIR) based automatic door alarm system used in places like shopping malls, hotels and theatres. This project proposes a system of automatic sensing any body movement object near the door. This is achieved with help of a PIR (Passive Infrared) sensor. A live body generally emits infrared energy which is sensed by the PIR sensor from a considerable distance. This sensing signal is fed to an integrated circuit to trigger a buzzer. When a body approaches within the operating range of the sensor, it sends a logical command through an alarm indicating that someone is approaching the door. If there is no further movement within the PIR operating range...[read more to downlooad complete material]

0167]. DESIGN AND CONSTRUCTION OF A PIR SENSOR BASED SECURITY SYSTEM: This electronic security system can be used in banks and other high security areas. A normal electronic security system will have a transmitter and a receiver. The transmitter sends out an IR laser and this will be received by the receiver. When an intruder walks past the device, the IR beam is cut and thus the alarm is activated. But, this system has some major disadvantages like limited range and poor line of sight.
Instead of infrared or laser transmitters and receivers, PIR (Passive Infrared Radial) sensors are used in this circuit. The sensor is basically a pyroelectric device. When the device is exposed to infrared radiation, it generates an electric charge. The device is made of crystalline material. According to the change in the amount of infrared striking the element, there will be a change in the voltages generated, which is measured by an on-board amplifier.
The infrared light explained here refers to the light radiating from all objects in its field of view. The reason for not having a transmitter and receiver is that the device does not emit one, but only accepts the energy emitted from objects above absolute zero in the form of radiations. Thus the temperature will be different for a human working past a sensor, and that of a wall right in front of it. Thus the word “passive” is used in PIR to explain that it does not emit a radiation and receive it, but instead accepts the incoming infrared radiation passively...[read more to downlooad complete material]

0168]. DESIGN AND FABRICATION OF A PIPE ROTATOR : When welding is being carried out on a pipe, there are a lot of things to keep in mind. Some of these are vitally important, and if done correctly can affect the entirety of the weld. Pipe welding can be quite complex work that requires a lot of skill, but pipe rotators make that work much easier.
The design details are given includes such items as materials and their characteristics. Adaptation methodology the parts relation with the whole device and the effect of the finished product upon which an inqiusitmined can make collection of fact in future which related to this project...[read more to downlooad complete material]

0169]. DESIGN AND CONSTRUCTION OF A MOTION SENSOR LIGHT CONTROL SYSTEM : A motion detector is a device that detects moving objects, particularly people. A motion detector is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area. Motion detectors form a vital component of automated lighting control. Its use is to illuminate an area when a person walks by so that he or she can see well. Many people place motion detectors in their backyards or even in their houses so that when they walk through that area, the lights will automatically turn on...[read more to downlooad complete material]

0170]. DESIGN AND CONSTRUCTIONOF AN AUTOMATIC GATE OPENING AND CLOSING SYSTEM USING INFRARED: The project is titled design and construction of an automatic gate opener using infrared. Opening and closing of doors is always a tedious job, especially in places like shopping malls, hotels and theatres where a person is always required to open the door for visitors.
This project proposes a system of automatic opening and closing of door by using remote. The remote sensor transmitter emit infrared radiation  from a considerable distance and sends it to the receiver, commanding the receiver to either open the gate or to close it. This sensing signal is fed to a controller to operate a door motor through motor driver IC.
The remote sensor sends a logical command to open the door. The door automatically closes with a fixed time delay...[read more to downlooad complete material]

0171]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC MOTION SENSOR: Motion detector detects moving objects, particularly people. A motion detector is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area. Motion detectors form a vital component of automated lighting control. Its use is to illuminate an area when a person walks by so that he or she can see well. Many people place motion detectors in their backyards or even in their houses so that when they walk through that area, the lights will automatically turn on...[read more to downlooad complete material]

0172]. DESIGN AND CONSTRUCTION OF AN ALCOHOL SENSING DISPLAY WITH ALARM : This work is on an alcohol sensing system that measures alcohol intake, displays percentage of alcohol and also sounds an alarm if it is above a particular threshold. Here we use an alcohol sensor circuit along with LCD display and a buzzer alarm. Our system first uses the alcohol sensor in order to detect alcohol. The sensor provides analog output. This analog output is now provided to the microcontroller for further processing. Based on the input the microcontroller calculates the percentage of alcohol and displays the same on an LCD display. It also sounds an alarm if the amount of alcohol exceeds a particular amount. Our system thus allows measuring amount of alcohol and then displaying percentage of alcohol measured. Also an alarm is sounded that indicates that measured alcohol is above a particular percentage...[read more to downlooad complete material]

0173]. DESIGN AND CONSTRUCTION OF AN ALCOHOL DETECTOR AND ENGINE CUT OFF DEVICE: This device measures alcohol intake, displays percentage of alcohol and also automatically shutdown the engine of the car the drunk person is driving (or about to drive) if it is above a particular threshold. Here we use an alcohol sensor circuit along with LCD display and a relay for shutting down the system...[read more to downlooad complete material]

0174]. DESIGN AND CONSTRUCTION OF AN ALCOHOL BREATHALYZER CIRCUIT USING 8051 MICROCONTROLLER (AT89S51): This project work is on a breathalyzer circuit using 8051 microcontroller. This device outputs the blood alcohol content (BAC) from the breath. The BAC is displayed in percentage on a 3 digit seven segment display. The microcontroller used if AT89S51 which belongs to the 8051 family and the alcohol sensor is MQ135 gas sensor from Futurelec...[read more to downlooad complete material]

0175]. DESIGN AND CONSTRUCTION OF AN ALCOHOL DETECTION WITH VEHICLE CONTROLLING SYSTEM: The main purpose behind this project is “Drunk driving detection”. Now a days, many accidents are happening because of the alcohol consumption of the driver or the person who is driving the vehicle. Thus Drunk driving is a major reason of accidents in almost all countries all over the world. Alcohol Detector in Car project is designed for the safety of the people seating inside the car. This project should be fitted / installed inside the vehicle.
The main unit of this project is an “Alcohol sensor”. If the person inside car has consumed alcohol then it is detected by the sensor. Sensor gives this signal to a comparator IC. The output of comparator is connected to the microcontroller. Microcontroller is the heart of this project. It is the CPU of the complete circuit. Microcontroller gives high pulse to the buzzer circuit and the buzzer is turned on. At the same time a relay is turned off. Due to this the ignition of the car is deactivated...[read more to downlooad complete material]

0176]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC DOOR : Door automation is generally reserved for two purposes, accommodating high flows of pedestrian traffic and providing accessibility for people with disabilities. Automatic entrance/exit door control is widely used in public places such as grocery stores, businesses, transportation stations, airports, and wholesale department stores to eliminate the need of manually opening and closing actions. This project proposes a system of automatic opening and closing of door by sensing any body movement near the door. This is achieved with help of a PIR (Passive Infrared) sensor. A live body generally emits infrared energy which is sensed by the PIR sensor from a considerable distance. This sensing signal is fed to a microcontroller to operate a door motor through motor driver IC. When a body approaches within the operating range of the sensor, it sends a logical command to open the door. The door automatically closes with a fixed time delay. If there is no further movement within the PIR operating range. Interrupt signals are used through limit switches to avoid locked rotor condition of the motor...[read more to downlooad complete material]

0177]. DESIGN AND CONSTRUCTION OF A PROXIMITY DETECTION SENSOR : A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. Examples of proximity sensor usage include detecting an out-of-paper condition in a printer or a mobile phone screen that dims to save battery life when placed near a face. Proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation (infrared, for instance), and looks for changes in the field or return signal. The object being sensed is often referred to as the proximity sensor's target. Proximity Sensors are analog output reflective sensors in a small form factor SMT package that offer a distance detection range near zero to 60mm. Their operating principle is based on a high frequency oscillator that creates a field in the close surroundings of the sensing surface. The presence of a metallic object (inductive) or any material (capacitive) in the operating area causes a change of the oscillation amplitude. The rise or fall of such oscillation is identified by a threshold circuit that changes the output state of the sensor. The operating distance of the sensor depends on the actuator's shape and size and is strictly linked to the nature of the material...[read more to downlooad complete material]

0178]. DESIGN AND CONSTRUCTION OF A BURGULAR ALARM : The main objective of this project was to ensure a proper security to building against theft or intruder. The circuit uses CD4011 Cmos IC which was wired as a timing circuit, as tone generator and amplifier to obtain a maximum audible sound. The CD4011 times the circuits and also generates a tone and this tone is send to transistor which amplifies the tone generated through a loud speaker or buzzer. This device functions as a major security alarms  used in residential, commercial, industrial, and military properties for protection against burglary (theft) or property damage, as well as personal protection against intruders . It is an electronic device that is connected to the battery being installed in and gets activated when the owner of the building is leaving the building by moving the switch to the “set” position. When the system is in this “set” position, if intruder open and enters the building the alarm will start to blow after 20 seconds indicating that unauthorized has entered the building. The device and the “reset” switch are not seen but, it has an indicator light which shows that the alarm has been activated and it can only be reset by the owner of the building when return...[read more to downlooad complete material]

0179]. DESIGN AND CONSTRUCTION OF A CURTAIN OPENER AND CLOSER SYSTEM: This circuit will open and close the curtain of your home and office  just by pushing a switch. So with the help of this unique circuit, we do not need to move from one place to open and close the curtain. This circuit is used for household use, particularly for smaller doors and windows. Due to its small size and readily available components, it can be effortlessly fixed with a curtain...[read more to downlooad complete material]

0180]. DESIGN AND CONSTRUCTION OF A POWER FAILURE NOTIFICATIONS FROM ISOCKET : Power failure may be caused by various factors: an overload on the power plant, a thunderstorm, cable breakage during excavations. Whatever the reason you will be notified as soon as the power failure occurred in your remote area and you can act accordingly. This device notified the user when the remote power off condition has occurred. It is an intelligent device iSocket, which has a power off alarm function. This smart device is designed for remote control devices. You can command remote power on, remote power off via an SMS or a phone call. As soon as the system experiences power failure you will receive a power failure alarm...[read more to downlooad complete material]

0181]. DESIGN AND CONSTRUCTION OF A POWER BACK /UTILITY POWER RETURN ALERT: power back or utility power return alert which is also known as Power restoration alarm is a monitoring device that will trigger a buzzer when the mains supply is restored. This device is helpful to inform the restoration of power supply to some critical installation such as a pump in a fish tank. Once the buzzer sound, one will know that there is a restoration of power supply and actions need to be taken to switch ON and OFF all necessary appliances...[read more to downlooad complete material]

0182]. DESIGN AND CONSTRUCTION OF A RADIO FREQUENCY JAMMER : A Radio Frequency jammer is a device used to disrupt or prevent communication via a broadcasted RF signal. Simultaneously, they can blocks all commercial FM broadcast band (87.5 MHz to 108 MHz) and GSM signal transmissions within the jammer's transmission range. The device can possibly block these frequencies by transmitting a dirty signal (like noise) on the same frequency at which the GSM and radio system operates. A Radio Frequency jammer transmits a radio frequency signal on the same frequency at which the radio system operates and the jamming succeeds when the radio sets in the area where the jammer is located are disabled...[read more to downlooad complete material]

0183]. DESIGN AND CONSTRUCTION RECHARGEABLE AC LAMP USING ENERGY BULB : This work is on Rechargeable AC lamp which is a rechargeable source of light that is generated from an AC sources and stored in a rechargeable battery which is to be used during power outage using an energy saving bulb as the lighting device. It also serves as immanency sources of light mostly used when there is failure from out public power supply (P.H.C.N)...[read more to downlooad complete material]

0184]. DESIGN AND CONSTRUCTION RECHARGEABLE LANTERN USING LED:Nowadays, because of low energy or power consumption, low heat emission, low cost, the portability, wider application, LEDs are highly used than florescent in lantern. For instance, LEDs use about half the wattage of fluorescent lighting, about 6 watts of power versus 14 watts of power for a CFL light bulb. For an LED bulb’s lifespan, about 340 kilowatt hours of electricity is used. Fluorescent bulbs used over 60,000 hours (6 bulbs) will use around 840 kilowatt hours of electricity, also The light focuses on where the bulb is pointed rather than bathing the wider area in light. Because of all these advantages makes energy bulb highly applicable in rechargeable lantern design.
This work is on Rechargeable LED lamp which is a rechargeable source of light which uses AC source to recharge, the stored energy is to be used when there is power outage. It also serves as immanency sources of light mostly used when there is failure from out public power supply (P.H.C.N)...[read more to downlooad complete material]

0185]. DESIGN AND CONSTRUCTION OF A RECHARGEABLE ELECTRONIC MOSQUITO REPELLENT : The aim of this work is to design a device which can produce ultrasound in the frequency range of 20 kHz to 38 kHz, which can scare away mosquitoes using a rechargeable power source...[read more to downlooad complete material]

0186]. DESIGN AND CONSTRUCTION OF AN ELECTRONIC MOSQUITO REPELLENT :This work is titled design and construction of an electronic mosquito repellent circuit. Mosquito repellents like coils, mats, liquid vaporizers, creams are often used at various places. However they are prone to be fatal and can cause harm to human beings. For instance, mosquito repellent creams and oils can cause adverse affects on the skin like allergic reactions. Coils, mats can produce toxic fumes when heated and cause breathing trouble, whereas liquid vaporizers can also produce fumes when heated...[read more to downlooad complete material]

0187]. DESIGN AND CONSTRUCTION OF A RECHARGEABLE SOCKET: This work is on design and construction of a rechargeable socket. Rechargeable socket is a consumer electronics device used for powering and charging low power electronics device such as cell phone charger, rechargeable lantern and other low power devices. It comprises one or more electrochemical cells. The rechargeable batteries generate smaller voltage which then provides a mains voltage to the wall socket. Therefore, a transformer is plugged into the wall socket and produces the necessary voltage for powering appliances. The batteries are rated at 9.0v, and a current of 262 mA. The wall socket provides a voltage of 220v. This device can be charged by electricity...[read more to downlooad complete material]

0188]. DESIGN AND CONSTRUCTION OF A RECHARGEABLE STANDING FAN : This work is on rechargeable standing fan. The project involves using mains power supply to recharge power standing fan. Rechargeable standing fan, charges with mains power supply, then the charged battery is used to run the fan when there is power outage...[read more to downlooad complete material]

0189]. THE DESIGN AND CONSTRUCTION OF REMOTE ACTIVATED ELECTRONIC DOOR BELL: Remote activated electronic bell is a signaling device typically placed near an entry door to a building. When a visitor presses the remote the bell rings inside the building, alerting the occupant to the presence of the visitor.
A remote activated electronic doorbell is a handy little electronic device that makes it possible to operate doorbell wirelessly. The visitor or operator remotely sends an infrared or IR signal to a receiver that triggers the bell...[read more to downlooad complete material]

0190]. DESIGN AND CONSTRUCTIONOF A SENSOR OPERATED AUTOMATIC DOOR SYSTEM: The project is titled design and construction of a sensor operated automatic door system. Opening and closing of doors is always a tedious job, especially in places like shopping malls, hotels and theatres where a person is always required to open the door for visitors. This project proposes a system of automatic opening and closing of door by using sensors. The PIR sensor transmitter emit infrared radiation  from a considerable distance and sends it to the receiver, commanding the receiver to either open the gate or to close it. This sensing signal is fed to a controller to operate a door motor through motor driver IC. The sensor sends a logical command to open the door. The door automatically closes with a fixed time delay...[read more to downlooad complete material]

0191]. DESIGN AND CONSTRUCTION OF A SECURITY GATE SYSTEM : This project is titled the design and construction of a security gate system. It is designed to indicate when someone or an intruder opens the gate of homes or industries. A security gate system is designed to be placed on gates in homes to provide security by alerting the residents that the gate is being opened. When a gate is opened the buzzer will beep indicating that the gate is opened. The buzzer sounds at 110 or 120 decibels. That sound level is loud enough to be heard throughout most homes. The circuit uses a single CD4093D CMOS Integrated Circuit. The IC is a bilateral switch CMOS IC to indicate when the gate is opened. However, the aim of this project is to design a security gate system that will give an indication whenever any gate in a home is opened...[read more to downlooad complete material]

0192]. DESIGN AND CONSTRUCTION OF A SECURITY ALARM: A security alarm is a system designed to detect intrusion – unauthorized entry – into a building or area. Security alarms are used in residential, commercial, industrial, and military properties for protection against burglary (theft) or property damage, as well as personal protection against intruders. Car alarms likewise protect vehicles and their contents. Prisons also use security systems for control of inmates...[read more to downlooad complete material]

0193]. DESIGN AND CONSTRUCTION OF A REMOTE CONTROL GATE: This work is titled design and construction of automatic or remote controlled gate. Remote control gate is a technology that involves using remote to control a gate. This device uses remote to control the automatic closing and openning a gate.
A remote-control gate is a handy little electronic device that makes it possible to get into the garage without leaving the car or heaving up the heavy door yourself. The opener remotely sends an infrared or IR signal to a receiver that triggers a switch, prompting an electric motor to open or close the garage door. Before any garage door remote works correctly it must be within the specified range of its IR signal-sending strength. If it is within range but still does not work, there are ways to fix it...[read more to downlooad complete material]

0194]. DESIGN AND CONSTRUCTION OF A SENSITIVE CLAP SWITCH: Clap activated switch is an electronics device that can switch on and off a light, Fan, Radio or any other appliance by the sound of clap. This is the system of a very sensitive clap switch. It switches ON/OFF a White LED or electrical appliances through claps. The circuit can sense the sound of claps from a distance of 1-2 meters. Condenser Mic picks up sound vibrations caused by the clap...[read more to downlooad complete material]

0195]. DESIGN AND CONSTRUCTION OF A SHADOW DETECTOR WITH AN ALARM: Shadow alarms are widely used for security purposes. Project can be easily installed on the windows and doors. This circuit demonstrates the principle and operation of a simple shadow alarm using LDR. So it can be used at night by shopkeepers to protect the valuables in their showrooms. A dim lighting in the room is necessary to detect the moving shadow. Unlike opto-interruption alarms based on light-dependent resistors (LDRs), it does not require an aligned light beam to illuminate the photo-sensor.
The circuit is powered by a 9V power supply and uses the most sensitive photo-sensor L14F1 to detect shadows. It is portable and can be used at any place that is to be monitored...[read more to downlooad complete material]

0196]. DESIGN AND CONSTRUCTION OF A SHADOW SECURITY ALARM SYSTEM : This system sounds an alarm whenever a shadow falls on it. Shadow alarms are widely used for security purposes. Project can be easily installed on the windows and doors. This circuit demonstrates the principle and operation of a simple shadow alarm using LDR. So it can be used at night by shopkeepers to protect the valuables in their showrooms. A dim lighting in the room is necessary to detect the moving shadow. Unlike opto-interruption alarms based on light-dependent resistors (LDRs), it does not require an aligned light beam to illuminate the photo-sensor...[read more to downlooad complete material]

0197]. SERVOMOTOR MAGNETIC RESONANCE IMAGING (MRI): A servomotor is a specific type of motor and rotary encoder combination, usually with a dedicated, that forms a servomechanism. This assembly may in turn form part of another servomechanism. The encoder provides position and usually speed feedback, which by the use of a PID controller allow more precise control of position and thus faster achievement of a stable position (for a given motor power)...[read more to downlooad complete material]

0198]. DESIGN AND CONSTRUCTION OF A PASSWORD BASED DOOR LOCK SYSTEM USING 8051 MICROCONTROLLER: Traditional lock systems using mechanical lock and key mechanism are being replaced by new advanced techniques of locking system. These techniques are an integration of mechanical and electronic devices and highly intelligent. One of the prominent features of these innovative lock systems is their simplicity and high efficiency. Such an automatic lock system consists of electronic control assembly which controls the output load through a password. This output load can be a motor or a lamp or any other mechanical/electrical load...[read more to downlooad complete material]

0199]. DESIGN AND CONSTRUCTION OF A PASSWORD BASED CIRCUIT BREAKER: The circuit breaker is an absolutely essential device in the modern world, and one of the most important safety mechanisms in your home. Whenever electrical wiring in a building has too much current flowing through it, these simple machines cut the power until somebody can fix the problem. Without circuit breakers (or the alternative, fuses), household electricity would be impractical because of the potential for fires and other mayhem resulting from simple wiring problems and equipment failures. This system uses a microcontroller and keypad to control and protect electric power. Keypad is used to enter the password. The password which is entered is compared with the predefined password. If entered password is correct then the corresponding electrical line is turned ON or OFF...[read more to downlooad complete material]

0200]. DESIGN AND CONSTRUCTION OF A REMOTE CONTROLLED POWER SUPPLY UNIT: The paper presents the design and construction of an infrared remote controlled power supply-switching unit, which is a device that enables the user to operate or control the mains power supplied from approximately 5 to 10 meters away. The remote transmits a beam of light using an infrared light emitting diode; this light is picked and decoded by the receiver unit (Photodiode). The receiver only activates when it receives the beam of light, there are no accidental activations. The system was broken down into simpler functional parts namely: The transmitter stage, the detector (phototransistor) stage, the NAND Schmitt trigger stage, the flip-flop stage and the relay stage. Details of the stages are described in the paper...[read more to downlooad complete material]

0201]. DESIGN AND CONSTRUCTION OF A SMOKE DETECTOR ALARM USING PHOTO INTERUPTER AND 555 TIMER: This project is titled design and construction of a smoke detector alarm. Fire/smoke alarm is an electronics device that is installed in a building to detect the presence of fire accident. Smoke detector alarm system is designed to detect the unwanted presence of fire by monitoring environmental changes associated with combustion. Smoke detector alarm systems are intended to notify the building occupants to evacuate in the event of a fire or other emergency, report the event to an off-premises location in order to summon emergency services, and to prepare the structure and associated systems to control the spread of fire and smoke...[read more to download complete material]

0202]. SIMULATION OF A SPACE VECTOR PWM CONTROLLER FOR A THREE-LEVEL VOLTAGE-FED INVERTER MOTOR DRIVE: Multilevel voltage-fed inverters with space vector pulse width modulation strategy are gained importance in high power high performance industrial drive applications. This paper proposes a new simplified space vector PWM method for a three-level inverter fed induction motor drive. The three- level inverter has a large number of switching states compared to a two-level inverter. In the proposed scheme, three-level space vector PWM inverter is easily implemented as conventional two-level space vector PWM inverter. Therefore, the proposed method can also be applied to multilevel inverters. In this work, a three-level inverter using space vector modulation strategy has been modeled and simulated. Simulation results are presented for various operation conditions using R-L load and motor load to verify the system model...[read more to downlooad complete material]

0203]. DESIGN AND CONSTRUCTION OF A REMOTE CONTROL GATE USING 8051 MICROCONTROLLER: This work is titled design and construction of automatic or remote controlled gate. Remote control gate is a technology that involves using remote to control a gate. This device uses remote to control the automatic closing and openning a gate.
A remote-control gate is a handy little electronic device that makes it possible to get into the garage without leaving the car or heaving up the heavy door yourself. The opener remotely sends an infrared or IR signal to a receiver that triggers a switch, prompting an electric motor to open or close the garage door. Before any garage door remote works correctly it must be within the specified range of its IR signal-sending strength. If it is within range but still does not work, there are ways to fix it. The circuit was designed, and developed using pulse width modulation (PWM) which is generated using 8051 microprocessor. PWM method was used to vary the speed of the DC motor. To make it, IR transmitter and IR sensor was used. There are two sections in the circuit: (1) PWM generator with IR modulator and (2) IR receiver and motor driver.  The transmitter generates PWM wave of 50hz (20ms) and modulates it over 38KHz frequency. The IR sensor on receiver side will demodulate the PWM wave and drives the DC motor. This work is aimed at constructing a remote control gate using 8051 microprocessor...[read more to downlooad complete material]

0204]. DESIGN AND CONSTRUCTION OF AN ELECTRONICS NOTICE BOARD USING LED: Electronic Signboard is a device used for communication, to convey information such that its receiver can make cognitive decisions based on the information provided. In general, signage can be classified into the following functions: (a)Information (b)Direction(c)Identification. Light-emitting diode (LED) technology is frequently used in signs. This technology, first used primarily at sporting events, later appeared at businesses, churches, schools, and government buildings...[read more to downlooad complete material]

0205]. DESIGN AND CONSTRUCTION OF A STRESS METER : This work is on stress meter. This stress monitor lets you assess your emotional pain. If the stress is very high, it gives visual indication through a light-emitting diode (LED) display along with a warning beep. This device is based on the principle that the resistance of the skin varies in accordance with your emotional states. If the stress level is high the skin offers less resistance, and if the body is relaxed the skin resistance is high. The low resistance of the skin during high stress is due to an increase in the blood supply to the skin. This increases the permeability of the skin and hence the conductivity for electric current...[read more to downlooad complete material]

0206]. CONSTRUCTION OF A STRESSMETER AND BLOOD PRESSURE METER: Stress can cause hypertension through repeated blood pressure elevations as well as by stimulation of the nervous system to produce large amounts of vasoconstricting hormones that increase blood pressure. Factors affecting blood pressure through stress include white coat hypertension, job strain, race, social environment, and emotional distress.
Stress is a normal part of life, but reducing stress can help lower high blood pressure. Stress can be reduced by measuring the level of it in the body. This device lets you assess your emotional pain and blood pressure. If the stress or the body pressure is very high, it gives visual indication through a light-emitting diode (LED) display along with a warning beep....[read more to downlooad complete material]

0207]. DESIGN AND CONSTRUCTION OF A RECHARGEABLE LED LANTERN WITH DUAL POWER SOURCE: Nowadays, because of low energy or power consumption, low heat emission, low cost, the portability, wider application, LED bulbs are highly used than florescent lamp when building lantern. This work is on LED lantern with dual power supply which uses an AC source to power the lamp when there is mains power supply and also use a rechargeable battery which is charged with mains source which is to be used during power outage using LEDs as the lighting device. It also serves as immanency sources of light mostly used when there is failure from out public power supply (P.H.C.N)...[read more to downlooad complete material]

0208]. DESIGN AND CONSTRUCTION OF A COAL-FIRED POWER GENERATOR: Coal-fire power generator is a power plant in which the prime mover is steam driven, and the steam is been heated with coal. Water is heated (with coal), turns into steam and spins a steam turbine which drives an electrical generator. After it passes through the turbine, the steam is condensed in a condenser and recycled to where it was heated; this is known as a Rankine cycle.
Commercial electric utility power stations are usually constructed on a large scale and designed for continuous operation. Coal-fire power generator typically uses three-phase electrical generators to produce alternating current (AC) electric power at a frequency of 50 Hz or 60 Hz. Large companies or institutions may have their own power plants to supply heating or electricity to their facilities, especially if steam is created anyway for other purposes...[read more to downlooad complete material]

0209]. COMPARACTIVE ANALYSIS OF UNDERGROUND CABLE FAULT DISTANCE LOCATOR : Cable fault location is the process of locating periodic faults, such as insulation faults in underground cables, and is an application of electrical measurement systems. Underground distribution cables are usually characterized with different technical difficulties regarding detecting and locating their faults. Different factors participate into these difficulties including their remarkable charging currents, cable construction and variations of their equivalency resulted from the variety of bonding and grounding methodologies. In this paper, a new fault location algorithm is proposed for underground cables in particular. The algorithm is able to precisely calculate the fault distance depending on modifying the basic apparent impedance approach to cope with the aforementioned characteristics of cable segments. In order to evaluate the performance of the proposed algorithm, different investigation tests are performed depending on a typical 11 kV underground distribution feeder in the Egyptian distribution system. All applied test cases are prepared with MATLAB-Simulink using the SimPower toolbox with accurate representation of power system elements utilizing distributed parameter line models. Moreover, the performance of the proposed algorithm is compared with the original apparent impedance approach using the same simulation platform. The applied test results cover a wide variety of fault conditions including fault resistance and loading circumstances. The results corroborate the efficacy of the proposed algorithm for locating such faults in underground distribution systems...[read more to downlooad complete material]

0210]. DESIGN AND CONSTRUCTION OF A CLOSE CIRCUIT MONITOR: This work is titled design and construction of a close circuit monitor. A close circuit monitor involves using a video camera or photography camera to monitor the situation of an environment. Closed-circuit monitor is the use of  cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point (P2P), point to multipoint, or mesh wireless links. Though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores. Many cities and motorway networks have extensive traffic-monitoring systems, using closed-circuit monitor to detect congestion and notice accidents. Many of these cameras however, are owned by private companies and transmit data to drivers' GPS systems. This monitor utilizes a video recorder which records and saves any event monitored for future references. The aim of this work is to design a system that monitors the situation of an environment through a camera which can be view through computer system immediately or after the monitoring...[read more to downlooad complete material]

0211]. DESIGN AND CONSTRUCTION OF A DUAL POWER SUPPLY: This work is on a dual power supply. A dual output power supply is a power source that provides two separate Direct Current (DC) or Alternating Current (AC) voltage outputs. Both are usually electrically isolated from the power supply input by a transformer. The outputs may be electrically isolated from each other as well, depending upon the design. It may be an adjustable power supply or it may provide fixed voltages or currents. In electrical and electronics engineering, dual power supply are used to supply positive polarity (+Vcc) as well as negative polarity (-Vcc, not connected to ground!) and ground potential to appliances...[read more to downlooad complete material]

0212]. DESIGN AND CONSTRUCTION OF A BUS IDENTIFICATION SYSTEM FOR THE BLIND: Many technologies have recently made noticeable changes in several domains. This paper will shed the light on the field of transportation to improve the life quality of visually impaired persons (VIPs) using some of these technologies such as Radio Frequency identification (RFID) and wireless sensors network. Furthermore, a mechatronic system architecture and an appropriate design for its components will be proposed. This system will allow VIPs to safely catch buses with the help of an audio device and a tactile interface through a wireless communication system (Wi-Fi) between the transmitter and the receiver. VIPs will have the opportunity to get information about bus/transit stop locations and departure times or other transit schedule information. The motivation behind this project is that buses are vital in enabling blind people to participate fully in society, access to facilities and services...[read more to downlooad complete material]

0213]. DESIGN AND CONSTRUCTION OF A 9V REGULATED POWER SUPPLY:A 9v regulated power supply is an electronic device that supplies regulated 9v electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another. A 9v regulated Power supply takes in AC power from the mains supply and delivers a DC voltage to the item requiring power. To obtain a 9v DC power supply using a single circuit. The circuit uses an IC 7809 for obtaining the required voltage. The AC mains voltage will be stepped down by the transformer T1, rectified by bridge B1 and filtered by capacitor C1 to obtain a steady DC level .The IC regulate this voltage to obtain a steady 9vDC. In this way 9v is obtained...[read more to downlooad complete material]

0214]. DESIGN AND IMPLIMENTATION OF CUSTOMER CALL TRACKING SYSTEM : This project report is on "Customer Call Tracking System". This system will deal with all the aspects of CRM (Customer Relationship Management) starting from Customer’s Problem entry, processing, complaint resolution, tracking of complaints as well as report generation. This is a Oracle web application intended to provide automated solution to customer’s problem/complaint. Customer call tracking system is used in recording conversation between a caller and receiver. This information can then be used to calculate your conversion rate more effectively.  You can also use call recording for training and quality control purposes for your customer service representatives...[read more to downlooad complete material]

0215]. DESIGN AND IMPLEMENTATION OF A WIRELESS VIDEO SENDER: This device is for transmitting for domestic audio and video signals wirelessly from one location to another. It is most commonly used for sending the output of a source device, such as a satellite television decoder, to a television in another part of a property and provides an alternative to cable installations...[read more to downlooad complete material]

0216]. DESIGN AND CONSTRUCTION OF RFID AND PASSWORD BASED AUTOMATIC DOOR ACCESS CONTROL SYSTEM: Traditional lock systems using mechanical lock and key mechanism are being replaced by new advanced techniques of locking system. These techniques are an integration of mechanical and electronic devices and highly intelligent. One of the prominent features of these innovative lock systems is their simplicity and high efficiency.
Such an automatic lock system consists of electronic control assembly which controls the output load through a password. This output load can be a motor or a lamp or any other mechanical/electrical load...[read more to downlooad complete material]

0217]. DESIGN AND IMPLIMENTATION OF WEB BASED BUG TRACKING SYSTEM: Bugs have been existed as a problem in the system and they are normally inevitable in software development. Most software bugs arise from mistakes and errors made by people in either a program, source code or its technical design. Huge amount of bugs could be found in system development. It was relatively difficult to manage bugs in simple word documents or remember everything in one’s head. Thus Change and Bug Tracking (CBT) System has been introduced in order to keep track of the reported bug in the system. By using this tracking system, every user can report and follow up the issue in the system. This system provided a platform for users from different departments to report issues and understand the latest progress in a product. It consolidated and organized information in single system and centralized data repository for the changes and bugs in system. Besides, this system could be accessed by team members concurrently to improve efficiency and they can search particular information in the system easily. It made communication between teams more effective and all the bugs and changes are recorded in web based system and hence the system is scalable...[read more to downlooad complete material]

0218].GSM-BASED DISTRIBUTION TRANSFORMER MONITORING SYSTEM: This paper presents design and implementation of a mobile embedded system to monitor and record key operation indicators of a distribution transformer like load currents, transformer oil and ambient temperatures...[read more to downlooad complete material]

0219]. DESIGN AND CONSTRUCTION OF A WIRELESS HOSPITAL PATIENT EMERGENCY NURSE CALL-UP SYSTEM: Much difficulty is experienced in hospitals and nursing homes with the proper response to calls for nurses by patients and also to matters of security. Various systems are employed, sometimes in a rather haphazard or makeshift manner, for calling nurses to the rooms of patients. Most frequently, each patient has in ready reach near the bed a push button switch which sounds a buzzer or lights a call light at some nursing station. There is usually no provision to keep the buzzer sounding periodically until the call is answered or to keep the indicator light on until the light is answered or to extinguish the light when the call is answered. Many calls from patients go unanswered and frequently time is wasted by making a second response to the patients call...[read more to downlooad complete material]

0220]. DESIGN AND CONSTRUCTION OF A WIND POWER GENERATOR: Wind results from air in motion. Air in motion arises from a pressure gradient. Wind can be broadly classified as “planetary” and “local”. Planetary winds are caused by greater solar heating of the earth`s surface near the equator than near the northern or southern poles. This cause warm tropical air to rise and flow through the upper atmosphere towards the poles & cold air from the poles to flow back to the equator nearer to earth’s surface.  The power in the wind can be computed by using the concepts of kinetics. The wind mill works on the principle of converting kinetic energy of the wind to mechanical energy using wind turbine. Wind turbines are made to rotate with the blowing wind and accordingly electricity been generated...[read more to downlooad complete material]

0221]. DESIGN AND CONSTRUCTION OF AN FM WIRELESS MICROPHONE: This paper presents the design and construction of a wireless microphone FM transmitter with a range of about 100meters. Wireless microphone FM transmitter with a range of about 100meters.  The  use  of  cable  microphones  creates inconvenience and obstruction while in use so  it  becomes paramount  to  design and construct  a wireless  microphone  using  Frequency  Modulation  as  link  instead  of  a  cable  with  a  reception which should be portable, affordable and operate efficiently. The transmitter works using a 9v dc supply which operates on the principle of FM (frequency modulation) band. The design consists of four parts which include; the input unit (electret microphone), audio amplifier unit, modulator and finally the oscillator unit. The input unit is a microphone which is used to provide the signal in the form of speech amplified by the audio amplifier; the amplified signal is then transferred to the  modulator  unit  where  the  signal  is  being  superimposed  on  the  carrier  wave  in  a  suitable manner.  The  oscillating  unit  which  is  an  LC  oscillator  provides  the  necessary  high  frequency needed for transmitting the signal through an antenna. The output is a signal transmitted through a distance of 100m which is transmitted at a frequency of 102.3MHZ...[read more to downlooad complete material]

0222]. DESIGN AND CONSTRUCTION OF A WIRELESS DC MOTOR SPEED AND DIRECTION CONTROL USING RADIO FREQUENCY: Wireless remote controlled dc motor explained in this project. Motor control through RF communication is a very interesting application and is widely used in robotics, electronics toys, automation systems etc. This topic covers the way DC motors can be driven by using the controls from a distant place. The controls are transferred from one end to another by employing an RF signal...[read more to downlooad complete material]

0223]. THE DESIGN AND CONSTRUCTION OF A WIRELESS DC MOTOR SPEED CONTROLLER USING INFRARED: This project is titled the design and construction of a wireless dc motor speed controller. That is, varying the speed of DC motor from a remote place without any wire connection. The circuit was designed, and developed using pulse width modulation (PWM). PWM method was used to vary the speed of the DC motor. To make it, IR transmitter and IR sensor was used. There are two sections in the circuit: (1) PWM generator with IR modulator and (2) IR receiver and motor driver.  The transmitter generates PWM wave of 50hz (20ms) and modulates it over 38KHz frequency. The IR sensor on receiver side will demodulate sthe PWM wave and drives the DC motor...[read more to downlooad complete material]

0224]. DESIGN AND IMPLIMENTATION OF A WIRELESS VIDEO AUDIO TRANSMITTER AND RECEIVER OVER FREQUENCY MODE: The era of wire or cable connection for reception of audio and video media is almost obsolete. Now technology is making everything wireless and stress free. This device is another brilliant technology that can let you connect your audio and video footage from one point to another without wires, example connect different TVs in different locations(rooms) from your DVR(DSTV Decoder) without running wires, CCTV cameras to Monitor without running wires, DVD to TVs or speakers in different rooms without running cables...[read more to downlooad complete material]

0225]. DESIGN AND CONSTRUCTION OF WIRELESS MOTION DETECTOR:A wireless motion detector is a device that detects moving objects, particularly people. A motion detector is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area. Wireless motion detectors form a vital component of security, automated lighting control, home control, energy efficiency, and other useful systems. Wireless motion detector do not require drilling, and they communicate with the other security system components wirelessly...[read more to downlooad complete material]

0226]. DESIGN AND CONSTRUCTION OF A WIRELESS DOOR BELL: Today the traditional wired type of doorbells are gradually getting obsolete and are being replaced by the advanced wireless type of doorbells that are easier to install due to their hassle free set-ups. Wireless doorbell system generally comprises at least one RF transmitter powered by a battery or other power source, such as existing electrical wiring, and a RF receiver. In response to the depression of a button or other activating means on the transmitter, an electrical circuit is completed within the transmitter which energizes an oscillator or other means for generating a RF signal. The generated RF signal is then, with the aid of an antenna, transmitted a certain distance for reception by the receiver. The receiver alerts, for example, a homeowner that the doorbell button has been depressed by producing an audible signal, such as a tone or melody, upon detecting the transmitted RF signal...[read more to downlooad complete material]

0227]. DESIGN AND CONSTRUCTION OF WIRELESS LOAD CONTROLLER BY GSM: Today the traditional wired type of doorbells are gradually getting obsolete and are being replaced by the advanced wireless type of doorbells that are easier to install due to their hassle free set-ups. Wireless doorbell system generally comprises at least one RF transmitter powered by a battery or other power source, such as existing electrical wiring, and a RF receiver. In response to the depression of a button or other activating means on the transmitter, an electrical circuit is completed within the transmitter which energizes an oscillator or other means for generating a RF signal. The generated RF signal is then, with the aid of an antenna, transmitted a certain distance for reception by the receiver. The receiver alerts, for example, a homeowner that the doorbell button has been depressed by producing an audible signal, such as a tone or melody, upon detecting the transmitted RF signal...[read more to downlooad complete material]

0228]. WORKING OF LIQUID CRYSTAL DISPLAYS (LCD):We always use devices made up of Liquid Crystal Displays (LCDs) like computers, digital watches and also DVD and CD players. They have become very common and have taken a giant leap in the screen industry by clearly replacing the use of Cathode Ray Tubes (CRT). CRT draws more power than LCD and are also bigger and heavier. All of us have seen an LCD, but no one knows the exact working of it. Let us take a look at the working of an LCD. This work focuses on the working principle of liquid crystal display...[read more to downlooad complete material]

0229]. WIRELESS VIDEO SURVEILLANCE SYSTEM USING CCTV:This work is on wireless video surveillance system using cctv. wireless video surveillance system using cctv is an Image monitoring device is essential in all fields where security is required and where continuous monitoring is required. Image monitoring is widely used in commercial stores and banks to prevent theft, in industries for security, in VIP’s house and offices for security.  This project auto image monitoring system consists of sensors placed at the entrance of doors to sense the persons coming in and going out, and is given as input to the microcontroller. Microcontroller is programmed to turn the camera in the direction which the person enters. Camera is provided with the transmitter to transmit signal which is received and interfaced with the TV to view the image...[read more to downlooad complete material]

0230]. DESIGN AND IMPLIMENTATION OF WIRELESS COMMUNICATION FOR VEHICLE SAFETY: Many accidents occur today when distant objects or roadway impediments are not quickly detected. To help avoid these accidents, longer-range safety systems are needed with real-time detection capability and without requiring a line-of-sight (LOS) view by the driver or sensor. Early detection at intersections is required for obstacle location around blind corners and dynamic awareness of approaching vehicles on intersecting roadways...[read more to downlooad complete material]

0231]. DESIGN AND CONSTRUCTION OF A WIRELESS MOBILE CHARGING BY INDUCTIVE COUPLING:As power requirements for portable devices increase, consumers are looking for easy-to-use charging solutions that can be deployed in a wide array of environments such as home, office, automobiles, airports, schools and more. Wireless charging uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station.  Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device...[read more to downlooad complete material]

0232]. DESIGN AND CONSTRUCTION OF A WIRELESS SWITCH CIRCUIT USING CD4027: Generally appliances that we used in our home are being controlled with the  help of devices like switches, sensors. However sometimes it is dangerous to have physical contact with these switches. So to overcome these dangers, here we have explained a circuit that needs no physical contact with the appliance. In these circuits all you  need is to pass your hand  above LDR. As you first pass your hand over LDR the device connected with  it started and remain in that state till you again pass your hand above LDR...[read more to downlooad complete material]

0233]. DESIGN AND IMPLEMENTATION OF A WALKIE-TALKIE:A walkie-talkie is a half-duplex communication device; multiple walkie-talkies use a single radio channel, and only one radio on the channel can transmit at a time, although any number can listen. The transceiver is normally in receive mode; when the user wants to talk he presses a "push-to-talk" (PTT) button that turns off the receiver and turns on the transmitter. Typical walkie-talkies resemble a telephone handset, possibly slightly larger but still a single unit, with an antenna mounted on the top of the unit. Where a phone's earpiece is only loud enough to be heard by the user, a walkie-talkie's built-in speaker can be heard by the user and those in the user's immediate vicinity. Hand-held transceivers may be used to communicate between each other, or to vehicle-mounted or base stations...[read more to downlooad complete material]

0234]. DESIGN AND CONSTRUCTION OF A WIRELESS CONTROLLED DOOR-BELL: Now day’s wireless control of appliance is in practice, because of its advantage like no wire is needed, multiple controlling is less complicated. By considering these all, the innovative group Dreamlover Technology designed and verified the circuit of wireless Doorbell. The controlling range of wireless doorbell is 100M. As the wireless doorbell is wireless based project, it is divided into two major section i.e. transmitter and receiver...[read more to downlooad complete material]

0235]. WIRELESS RF NETWORK CABLE TESTER: Wireless network cable tester to check whether RF signal is present in the network cable or not. It is a non contact version tester and can detect the presence of RF signal from a distance of two feet. It can be used to check all kinds of signal cables like Ethernet cable, Modem cable, Dish TV cable etc. The device lights an LED at the moment it accepts RF energy around the cable...[read more to downlooad complete material]

0236]. DESIGN AND CONSTRUCTION OF A WIRELESS MOBILE BATTERY CHARGER:This work explains a simple wireless battery charger circuit that charges your mobile when placed near the transmitter. This circuit may be used as wireless power transfer circuit, wireless mobile charger circuit, wireless battery charger circuit...[read more to downlooad complete material]

0237]. AUTOMATIC ROOM LIGHT CONTROLLER WITH BIDIRECTIONAL VISITOR COUNTER: Automatic Room Light Controller with Bidirectional Visitor Counter is a reliable circuit that takes over the task of controlling the room lights as well us counting number of persons / visitors in the room very accurately. When somebody enters into the room then the counter is incremented by one and the light in the room will be switched ON and when any one leaves the room then the counter is decremented by one. The light will be only switched OFF until all the persons in the room go out. The total number of persons inside the room is also displayed on the seven segment displays. The microcontroller does the above job. It receives the signals from the sensors, and this signal is operated under the control of software which is stored in ROM. Microcontroller AT89S52 continuously monitor the Infrared Receivers. When any object pass through the IR Receiver's then the IR Rays falling on the receivers are obstructed. This obstruction is sensed by the Microcontroller...[read more to downlooad complete material]

0238]. DESIGN AND CONSTRUCTION OF A WIRELESS CAR IMMOBILIZER: Master Lock anti-theft car immobilizer is wireless. It disables the starter motor or fuel pump automatically when you turn off the car. It is designed to turn itself off and allow the car to start again when the driver returns. These are factory new units, however they don't have instructions and we aren't sure how fresh the small coin battery (CR2032) in the remotes are. To use just unplug your existing relay and plug in the Master Lock starter sentry relay. The Master Lock starter sentry relay has a complete 64 bit rolling code receiver built into the relay case (a real accomplishment of miniaturization) so that would be thieves are blocked out...[read more to downlooad complete material]

0239]. DESIGN AND CONSTRUCTION OF A LOW AND HIGH VOLTAGE MONITOR: Low and high voltage monitor is designed to protect electrical appliances from over voltage as well as under voltage. The under/over voltage monitor circuit with time delay presented in this work is a low cost and reliable circuit for protecting such equipments from damages. Whenever the power line is switched on it gets connected to the appliance only after a delay of a fixed time. If there is hi/low fluctuations beyond sets limits the appliance get disconnected. The system tries to connect the power back after the specific time delay, the delay being counted from the time of disconnection. If the power down time (time for which the voltage is beyond limits) is less than the delay time, the power resumes after the delay: If it is equal or more, then the power resumes directly...[read more to downlooad complete material]

0240]. DESIGN AND CONSTRUCTION OF A HIGH AND LOW VOLTAGE CUT-OFF WITH TIME DELAY: The power line fluctuations and cut-offs causes damages to electrical appliances connected to the line. It is more serious in the case of domestic appliances like fridge and air conditioners. If a fridge is operated on low voltage, excessive current flows through the motor, which heats up, and get damaged...[read more to downlooad complete material]

0241]. DESIGN AND CONSTRUCTION WIRELESS SCADA TELEMETRY RADIOS: This work is on wireless SCADA telemetry radios. SCADA is the acronym for Supervisory Control and Data Acquisition. SCADA is a computer-based system for gathering and analyzing real-time data to monitor and control equipment that deals with critical and time-sensitive materials or events...[read more to downlooad complete material]

0242]. DESIGN AND CONSTRUCTION OF A 1KM TRANSMITTER: An FM transmitter is an electronic device which, with the aid of an antenna, produces radio waves. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves...[read more to downlooad complete material]

0243]. DESIGN AND CONSTRUCTION OF A YAGI-UDA ANTENNA: This project is on yagi-uda antenna.  Yagi-Uda antenna is a directional antenna consisting of multiple parallel elements in a line, usually made of metal rods. Yagi-Uda antennas consist of a single driven element connected to the transmitter or receiver with a transmission line, and additional parasitic elements: a so-called reflector and one or more directors...[read more to downlooad complete material]

0244]. DESIGN AND CONSTRUCTION OF A YAGI-UDA ANTENNA FOR LOCAL TELEVISION STATION: Yagi is very widely used as a high-gain antenna on the HF, VHF and UHF bands. It has moderate gain which depends on the number of elements used, typically limited to about 17 dBi, linear polarization, unidirectional (end-fire) beam patternwith high front-to-back ratio of up to 20 db. and is lightweight, inexpensive and simple to construct...[read more to downlooad complete material]

0245]. THE DESIGN AND CONSTRUCTION OF ELECTRONIC BELL WITH INDICATING LIGHT:An electronic bell is a signaling device typically placed near an entry door to a building. When a visitor presses a button the bell rings inside the building, alerting the occupant to the presence of the visitor. Modern house bells are electric — they are actuated by an electric switch...[read more to downlooad complete material]

0246]. DESIGN AND FABRICATION OF A FOUNDRY SAND MIXER USING LOCALLY AVAILABLE MATERIALS:Most small foundry shops mix their sand manually which is not efficient since homogenous mix cannot be guaranteed and even when foundry mixer are available most of them are imported costing the nation huge foriegn exchange. A foundry sand mixer capable of mixing foundry sand has been designed and fabricated using locally available material. The sand mixer components machine frame, mixing pan, motor support, gear box speed reducer, Shaft, discharge door and Mixing blades were designed ,produced and assembled together to produce the mixer. A step-turned shaft of diameters 23mm and 33mm attached to a 2hp, 3 phase electric motor to transmit the torque required to effectively turn and mix the sand in the pan. The mixer test results show that the average mixing time of the sand mixer to mix 20kg of sand was 14minutes and the mixer efficiency was 52%.The fabricated mixer compare favourably with the the imported existing one which has an efficiency of 59%.The application of this sand mixer by foundry shops will eliminate the use manual effort which is cumbersome, time wasting and inefficient.It will also save the the country of huge foreign exchange used in the importation of foundry sand mixers...[read more to downlooad complete material]

0247]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC EMERGENCY LIGHTING SYSTEM: An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. Emergency lights are standard in new commercial and high occupancy residential buildings, such as college dormitories. Most building codes require that they be installed in older buildings as well. It is powered by a NiCad battery that is being charged by the main power line when there is no blackout...[read more to downlooad complete material]

0248]. DESIGN AND CONSTRUCTION AN AUTOMATIC VOLTAGE STABILIZER: A voltage stabilizer is an electrical appliance used to feed constant voltage current to electrical gadgets like ACs and computers, and protects them from damage due to voltage fluctuations. It works on the principle of a transformer, where the input current is connected to primary windings and output is received from secondary windings. When there is a drop in incoming voltage, it activates electromagnetic relays which add to more number of turns in the secondary winding, thus giving higher voltage which compensates for loss in output voltage. When there is rise in the incoming voltage, the reverse happens, and, thus, the voltage at the output side remains almost unchanged...[read more to downlooad complete material]

0249]. DESIGN AND CONSTRUCTION OF A VEHICLE TRACKING SYSTEM USING GPS AND GSM MODEM: Currently almost of the public having an own vehicle, theft is happening on parking and sometimes driving insecurity places. The safe of vehicles is extremely essential for public vehicles. Vehicle tracking and locking system installed in the vehicle, to track the place and locking engine motor. The place of the vehicle identified using Global Positioning system (GPS) and Global system mobile communication (GSM). These systems constantly watch a moving Vehicle and report the status on demand. When the theft identified, the responsible person send SMS to the microcontroller, then microcontroller issue the control signals to stop the engine motor. Authorized person need to send the  password to controller to restart the vehicle and open the door. This is more secured, reliable and low cost...[read more to downlooad complete material]

0250]. DESIGN AND CONSTRUCTION OF A VARIABLE POWER SUPPLY: This project work is on design of a variable power supply. This work makes it possible for someone that wants to run, say a 3v radio with a power supply without using 2 * 1.5AA battery or powering any other device of higher or lower voltage rating without considering buying a new power supply. A variable power supply is an electronic device that supplies different level of electric energy to an electrical load. The primary function of a variable power supply is to supply different electrical energy to loads that fall at the same rating limit...[read more to downlooad complete material]

0251]. DESIGN AND CONSTRUCTION OF A VACUUM CLEANER: Dust can be harmful to somesone’s health, mostly people with respiratory conditions like asthma, chronic obstructive airways disease (COAD) or emphysema even small dust particle inhaled may cause irritation of the eyes,coughing,sneezing, hayfever or asthma attacks. In workshop, dust and dirty can cause serious damage to health as well as reducing the effectiveness of your machine, or even causing damage to it. To avoid this, vacuum cleaner may be used. Vacuum cleaner is a device that uses an air pump to create a partial vacuum to suck up dust and dirt, usually from floors, and from other surfaces such as upholstery and draperies. The dirt is collected by either a dustbag or a cyclone for later disposal...[read more to downlooad complete material]

0252]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC VEHICLE DETECTOR USING RFID TECHNOLOGY:Currently almost of the public having an own vehicle, theft is happening on parking and sometimes driving insecurity places. The safe of vehicles is extremely essential for public vehicles. Vehicle tracking and locking system installed in the vehicle, to track the place and locking engine motor. The place of the vehicle identified using Global Positioning system (GPS) and Global system mobile communication (GSM). These systems constantly watch a moving Vehicle and report the status on demand. When the theft identified, the responsible person send SMS to the microcontroller, then microcontroller issue the control signals to stop the engine motor. Authorized person need to send the  password to controller to restart the vehicle and open the door. This is more secured, reliable and low cost...[read more to downlooad complete material]

0253]. DESIGN AND FABRICATION OF VERTICAL ANIMAL FEED MIXER: This paper presents the design and fabrication of a poultry feed industrial tumble mixer. The design computations to handle a 50Kg mass of feed was done in the MS Excel environment for proper machine design approach. The machine was designed using proper material selection was done before the assembling and fabrication of parts. The efficiency of the machine, its associated cost of production and the product obtained after few minutes of mixing were outstanding, thereby, making the design acceptable and cost effective...[read more to downlooad complete material]

0254]. DESIGN AND CONSTRUCTION OF A HIGH (<40db) VHF – UHF RECEIVING ANTENNA: Television antenna, or TV aerial, is an antenna specifically designed for the reception of over-the-air broadcast television signals, which are transmitted at frequencies from about 41 to 250 MHz in the VHF band, and 470 to 960 MHz in the UHF band in different countries...[read more to downlooad complete material]

0255]. DESIGN AND CONSTRUCTION OF A VEHICLE INTERIOR LIGHTING WITH SWITCH OFF DELAY: Nowadays, a switch-off delay for the vehicle interior lighting is a naturally a standard feature. However, with certain models having only spartan fittings, or older-model vehicles, you’re left sitting in the dark as soon as you climb in and close the door...[read more to downlooad complete material].

0256]. EFFECT OF TEMPERATURE ON THE VISCOSITY OF WATER, MILK AND CORN OIL: Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction. For example, high-viscosity felsic magma will create a tall, steep stratovolcano, because it cannot flow far before it cools, while low-viscosity mafic lava will create a wide, shallow-sloped shield volcano...[read more to downlooad complete material]

0257]. DESIGN AND CONSTRUCTION OF A VOICE OPERATED FIRE EXTINGUISHER VEHICLE:This project is titled design and construction of voice operated fire extinguisher vehicle. Voice operated fire extinguisher vehicle is a robot designed for extinguishing fire through a voice recognition voice via a wireless approach. It will use voice-to-digital signal conversion which is transmitted via radio frequency communication to the robotic vehicle. The robotic vehicle will contain a water sprinkler. The robot should move in the desired direction as per voice command. The project aims at designing an intelligent voice operated fire extinguishing robotic vehicle which can be controlled wirelessly through RF communication. The Robotic vehicle has a camera mounted on it...[read more to downlooad complete material]

0258]. CONSTRUCTION OF A VOLTAGE-OPERATED EARTH LEAKAGE PROTECTION SYSTEM:Voltage-operated Earth Leakage protection system is a voltage operated circuit breaking device. The device will function when the Current passes through the Earth Leakage protection system. Voltage- operated Earth Leakage protection system contains relay Coil which it being connected to the metallic load body at one end and it is connected to ground wire at the other end...[read more to downlooad complete material]

0259]. DESIGN AND CONSTRUCTION OF VOLTAGE SELECTOR USE IN THE LABORATORY   WITH VOLTAGE OUTPUT OF 12, 9, 6, 4.5 AND 3VOLTS: This project work is on design of a voltage selector power supply. This work makes it possible for someone that wants to run, say a 3v radio with a power supply without powering any other device of higher or lower voltage rating without considering buying a new power supply. A voltage selector power supply is an electronic device that supplies different level of electric energy to an electrical load. The primary function of a selected power supply is to supply different electrical energy to loads that fall at the same rating limit...[read more to downlooad complete material]

0260]. DESIGN AND CONSTRUCTION OF A WINDPUMP: A windpump is a type of windmill which is used for pumping water. In wind pump, the blades of the windmill wheel catch the wind—just like the sails on a sailboat—which turns the wheel (rotor). The wheel is attached to a shaft by long arms. The shaft has small pinion gears at the other end, inside a gearbox. The pinion gears drive larger bull gears, which move pitman arms. The pitman arms push a sliding yoke up and down, above the bull gears (much like a crankshaft, connecting rod, and piston in a standard vehicle engine). The moving yoke lifts and drops the pump rod to do the work down below...[read more to downlooad complete material]

0261]. DESIGN AND CONSTRUCTION OF A WATER ALERT INFORMATION: Water leaks, large or small can and do cause thousands of pounds, if not hundred of thousands of pounds of damage to schools, factories, farms, shops & homes very single year.This is becoming a bigger problem year on year, as global warming and construction upon flood plains increases. Obviously a small water leak from a pipe cannot be put down to global warming, but as insurance companies have to keep paying out larger and larger amounts of money for large floods each year, they are also putting more and more restrictions and clauses in their policies.
This may mean, that not only do you have the problem of clearing up the water damage, you may also have the added problem of having to fund the repairs yourself due to your insurance company refusing to pay out...[read more to downlooad complete material]

0263]. DESIGN AND CONSTRUCTION OF A WHISTLE TO BEEP CIRCUIT: This device produces a beeping sound that lasts for around 3 seconds whenever you make a whistle. The CMOS Hex inverter CD4049 is the heart of this circuit. Out of the six inverters in CD4049, U1a is wired as an audio amplifier which amplifies the signal picked up by the microphone M1.The U1b is wired as a band pass filter with center frequency around 2KHz.The filter is necessary in order to pass the frequency corresponding to whistling sound and suppress all other frequencies .If the filter is not there, the circuit could easily get false triggered.U1d is wired as a 3S delay monostable multivibrator...[read more to downlooad complete material]

0264]. DESIGN AND CONSTRUCTION OF A WAILING ALARM:A wailing alarm is a loud noise making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Wailing alarm is used on emergency service vehicles such as ambulances, police cars and fire trucks. There are two general types: pneumatic and electronic. Wailing alarm serve double duty as tornado or civil defense sirens, alerting an entire community of impending danger. Most fire sirens are either mounted on the roof of a fire station, or on a pole next to the fire station. Fire sirens can also be mounted on or near government buildings, on tall structures such as water towers, as well as in systems, where several sirens are distributed around a town for better sound coverage. Most fire sirens are single tone and mechanically driven by electric motors with a rotor attached to the shaft. Some newer sirens are electronically driven by speakers, though these are not as common...[read more to downlooad complete material]

0265]. DESIGN AND CONSTRUCTION OF A 100W STEREOPHONIC AMPLIFIER: This work is titled the design and construction of 100W Stereophonic amplifier. Stereophonic amplifier is also known or called Audio power amplifier, which is a device for increasing the audio power of a signal by use of an external energy source. It is design to meet up with the amplification demand in homes, offices, industries and especially in music industries. Audio power amplifier amplifies low-power audio signals (signals composed primarily of frequencies between 20Hz – 20kHz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a typical audio playback chain, While the input signal to an audio amplifier may measure only a few hundred microwatts, its output may be tens, hundreds, or thousands of watts...[read more to downlooad complete material]

0266]. DESIGN AND CONSTRUCTION OF A WIRELESS PATIENT HEARTBEAT AND TEMPERATURE MONITORING SYSTEM:This work is on microcontroller based heart rate and body temperature measuring device with LCD output. Heart rate of the subject is measured from the index finger using IRD (Infra Red Device sensors and the rate is then averaged and displayed on a text based LCD).  The device alarms when the heart beat & the body temperature exceed the provided threshold value. This threshold value is defined by the programmer at the time of programming the microcontroller 89C8051. The threshold value given for the project is as 20 to 120 pulses per minute for heart beat indication & 18°C to 38°C for temperature.  This information i.e. the Heart Rate and the Body Temperature is then transmitted wirelessly to the doctor which in not in the vicinity of the patient through GSM technique. The sensors measure the information and transmit it through GSM Modem on the same frequency as on which cell phones work...[read more to downlooad complete material]

0267]. DESIGN AND CONSTRUCTION OF A VOLTAGE AMPLIFIER: An amplifier increases the voltage, current, or power of a signal. Amplifiers are used in wireless communications and broadcasting, and in audio equipment of all kinds. They can be categorized as either weak-signal amplifiers or power amplifiers.
Weak-signal amplifiers are used primarily in wireless receivers. They are also employed in acoustic pickups, audio tape players, and compact disc players. A weak-signal amplifier is designed to deal with exceedingly small input signals, in some cases measuring only a few nanovolts (units of 10-9 volt).
Voltage amplifier puts out a higher voltage than the input voltage.  When you are forced to work with a set amount of voltage, these amplifiers are commonly used to increase the voltage and thus the amount of power coming out of a circuit. This is useful for reading and adapting small signals such as boosting an audio signal before sending it on its way to speakers. The voltage amplifier is a form of the common emitter amplifier, which relies on the transistor; the amplification of voltage is dependent on the ratio of resistors on the collector and emitter of this transistor...[read more to downlooad complete material]

0268]. DESIGN AND CONSTRUCTION OF A USB AIR CONDITION: Air conditioning (often referred to as A/C or AC) is the process of altering the properties of air (primarily temperature and humidity) to more comfortable conditions, typically with the aim of distributing the conditioned air to an occupied space such as a building or a vehicle to improve thermal comfort and indoor air quality. In common use, an air conditioner is a device that lowers the air temperature. The cooling is typically achieved through a refrigeration cycle, but sometimes evaporation or free cooling is used. Air conditioning systems can also be made based on desiccants...[read more to downlooad complete material]
0269]. DESIGN AND CONSTRUCTION OF USB MOBILE CHARGER: This work is on constructing of USB mobile charger. Now the charging of your mobiles has been made easy with the help of USB outlets present in the Laptop and PC. For the charging of your mobile phone, this circuit provides you a regulated voltage of 4.7 volts. 5  volts of DC voltage and 100mA of current is being provided by the USB outlet which is well enough for the mobile phone charging slowly. We can use this circuit to charge the mobile while we are in journey also. For constructing USB mobile charger, there is a need of USB cable and the cable must have minimum one male plug with a strip back of about 5cm having  external padding and safeguard from the “uncovered” end of the USB cable. In general the USB cables are made up of four cables of colors red, while along with black and green ( along with the protestors). As the wire of green and white are used to transfer the data, so there is no need of that wire hence these wires can be trimmed (there we should need to pay attention that the wires within their padding and are not exposed). Typically black color wire is negative one while the red color wire is positive one. 5V is the voltage that we get from the USB port. And more than 500mA current cannot be supplied to the device that is attached to the USB port. Attached the power line with the USB plug examine the right polarity...[read more to downlooad complete material]

0270].THE DESIGN AND CONSTRUCTION OF A THREE PHASE AUTOMATIC PHASE SELECTOR:The basic aim of the design and construction of this three phase automatic phase selector is to demonstrate how contactors can be used to switch in between three lines or phases e.g “RED, YELLOW AND THE BLUE PHASE” without interfering with the contacts.Phase selector is able to switch between phases with the aid of inter-locking one phase to the other either one phase circuit is dependant on the other phase circuit which means that two phase circuit which those two phases cannot come on at the same time.Hence this has been achieved by the use of operational amplifier, timing circuit and high current relay switches and it is powered by 12V dc power supply...[read more to downlooad complete material]

0271]. DESIGN AND CONSTRUCTION OF SPEED CHECKER AND OVERS-PEED DETECTION FOR HIGHWAYS: This work is on a device to detect rash driving on highways and to alert the traffic authorities in case of any violation. In past, lot of devices to detect rash driving on highways has been made.Most of the approaches require human concentration and involve a lot of effort, which is difficult to implement. In this paper we intend to design a system aimed at early detection and alert of dangerous vehicle driving patterns related to rash driving. The speed limit is set by the police who use the system depending upon the traffic at the very location. The time taken by the vehicle to travel from one set point to the other is calculated by control circuit and displays that on seven segment displays. Moreover, if the vehicle crosses the speed limit, a buzzer sounds alerting the police...[read more to downlooad complete material]

0272]. PROTECTING POWER GRID FROM CYBER ATTACK: The nation's electrical grid, a sprawling network of substations, transformers and transmission lines, such as these in Chester, and other countries in Africa – such as Nigeria, is highly susceptible to cyber and physical attacks by saboteurs or terrorists, security officials say. This work deals on how power grid can be protected from cyber attack...[read more to downlooad complete material]

0273]. LOW FREQUENCY OSCILLATION DUMPING BY STATIC SYNCHRONOUS SERIES COMPENSATION: This paper proposes designing of Static Synchronous Series Compensator (SSSC) based damping controller to enhance the stability of a Single Machine Infinite Bus (SMIB) system by means of Invasive Weed Optimization (IWO) technique. Conventional PI controller is used as the SSSC damping controller which takes rotor speed deviation as the input. The damping controller parameters are tuned based on time integral of absolute error based cost function using IWO. Performance of IWO based controller is compared to that of Particle Swarm Optimization (PSO) based controller. Time domain based simulation results are presented and performance of the controllers under different loading conditions and fault scenarios is studied in order to illustrate the effectiveness of the IWO based design approach...[read more to downlooad complete material]

0274]. AUTOMATIC ROOM LIGHT CONTROLLER WITH BIDIRECTIONAL VISITOR COUNTER: This Project ―”Automatic Room Light Controller with Bidirectional Visitor Counter” is a reliable circuit that takes over the task of controlling the room lights as well us counting number of persons / visitors in the room very accurately. When somebody enters into the room then the counter is incremented by one and the light in the room will be switched ON and when any one leaves the room then the counter is decremented by one. The light will be only switched OFF until all the persons in the room go out. The total number of persons inside the room is also displayed on the seven segment displays. The microcontroller does the above job. It receives the signals from the sensors, and this signal is operated under the control of software which is stored in ROM. Microcontroller AT89S52 continuously monitor the Infrared Receivers. When any object pass through the IR Receiver's then the IR Rays falling on the receivers are obstructed. This obstruction is sensed by the Microcontroller...[read more to downlooad complete material]

0275]. DESIGN AND CONSTRUCTION OF AUTOMATIC SLIDING DOOR WITH OBJECT DETECTOR: The project is titled design and construction of an automatic sliding door with object detector. Opening and closing of sliding doors is always a tedious job, especially in places like shopping malls, hotels and theatres where a person is always required to open the door for visitors. If we install this automatic sliding door opener using object detection circuit, the circuit will automatically sense the presence of the person and it opens the sliding door...[read more to downlooad complete material]

0276]. DESIGN AND CONSTRUCTION OF A U-TUBE HEAT EXCHANGER: In buses, fluid used to cool down the diesel engine is often passed through a heat exchanger and the heat it reclaims is used to warm cold air from outside that is pumped up from the floor of the passenger compartment. That saves the need for having additional, wasteful electric heaters inside the bus. A car radiator is another kind of heat exchanger. Water that cools the engine flows through the radiator, which has lots of parallel, aluminum fins open to the air. As the car drives along, cold air blowing past the radiator removes some of the heat, cooling the water and heating the air and keeping the engine working efficiently...[read more to downlooad complete material]

0277]. DESIGN AND CONSTRUCTION OF AN ULTRASONIC WATER LEVEL CONTROLLER WITH 8051 MICROCONTROLLER: In our day-to-day life, we frequently use different types of sensors in various electronic appliances such as proximity sensor-mobile phone, motion sensor-automatic door operating system, temperature sensor-automatic fan speed controller, LDR sensor-automatic street light system or automatic outdoor lighting system, and so on. Similarly, to avoid the overflow of water in overhead tank or water container we can use the ultrasonic sensor based electronic circuit. This article discusses about ultrasonic water level controller using 8051...[read more to downlooad complete material]

0278]. THE IMPACT OF GSM JAMMER ON SERVICE DELIVERY AND ITS APPLICATIONS IN LECTURE AUDITORIUM: Mobile phone jammer is an instrument used to prevent cellular phones from receiving signals from base stations. When used, the jammer effectively disables cellular phones. These devices can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected. Jamming is usually distinguished from interference that can occur due to device malfunctions or other accidental circumstances. Devices that simply cause interference are regulated under different regulations. Unintentional 'jamming' occurs when an operator transmits on a busy frequency without first checking whether it is in use, or without being able to hear stations using the frequency. Another form of unintentional jamming occurs when equipment accidentally radiates a signal, such as a cable television plant that accidentally emits on an aircraft emergency frequency...[read more to downlooad complete material]

0279]. DESIGN AND CONSTRUCTION OF AN INTELLIGENT TRAFFIC LIGHT CONTROL SYSTEM: This work is on design of an intelligent traffic control system traffic  light, also known as traffic signal, stop light, traffic lamp, stop and go light, robots or semaphore, are signaling  devices positioned  at road inspections, pedestrian crossing, and other locations to control competing flows of traffic. Intelligent Traffic Light Controllers are based on microcontroller and microprocessor. These TLC have limitations because it uses the pre-defined hardware, which is functioning according to the program that does not have the flexibility of modification on real time basis. Due to the fixed time intervals of green, orange and red signals the waiting time is more and car uses more fuel
...[read more to downlooad complete material]
0280]. CONSTRUCTION OF CHARGING UNIT OF AN INVERTER FOR 3KVA INVERTER ON HYBRID:Charger recharges the inverter batteries. It also allows any surplus AC power to pass through and power downstream AC loads, such as a television set. When AC power is disconnected, the unit inverts DC battery power into AC electricity. Charging unit of an inverter charges the inverter battery automatically when battery voltage is below the specified voltage. The charging unit automatically shut off the charging process when battery attains full charge...[read more to downlooad complete material]

0281]. DESIGN AND CONSTRUCTION OF A FIRE ALARM PANEL: The fire alarm panel is the central element of any fire alarm system. All devices  are connected to the fire panel, which typically provides power to them and information is relayed back and forth to determine whether there is a fire and if so activate an appropriate warning. This device receives information from environmental sensors designed to detect changes associated with fire, monitors their operational integrity and provides for automatic control of equipment, and transmission of information necessary to prepare the facility for fire based on a predetermined sequence. The panel may also supply electrical energy to operate any associated sensor, control, transmitter, or relay...[read more to downlooad complete material]

0282]. DEVELOPMENT OF A DIGITAL FORENSIC ANALYSIS FOR SIM CARD: Smart cards are fundamental technology in modern life. It is embedded in numerous devices such as GPS devices, ATM cards, Mobile SIM cards and many others. Mobile devices became the evolution of technology. It becomes smaller, faster and supports large storage capabilities. Digital forensics of mobile devices that maybe found in crime scene is becoming inevitable. The purpose of this research is to address the SIM cards digital forensics analysis. It presents sound forensic methodology and process of SIM cards forensic examination. In particular, the main aim of the research is to answer the following research questions: (1) what forensic evidence could be extracted from a SIM card and (2) what are limitations that may hinder a forensic analysis?...[read more to downlooad complete material]

0283]. CONSTRUCTION OF A TELEPHONE: This project work is on a telephone. A telephone is an instrument that transmits voice over a distance. A person can talk and communicate with another person at distant place with the use of a telephone. A telephone is a device that converts the human sound into a form that is transmittable through wire or radio technology, and reproduces it at a far away place in an audible format.  A telephone receives the voice of one person through the microphone, transmit it over long distance in a way that the receiver can listen to the voice through the speaker provided with the telephone...[read more to downlooad complete material]

0284]. DESIGN AND CONSTRUCTION RECHARGEABLE LAMP USING LED WITH CHARGING MONITORING AND CONTROLLING SYSTEM: Nowadays, because of low energy or power consumption, low heat emission, low cost, the portability, wider application, LED bulbs are highly used than florescent lamp when building lantern. This work is on LED lantern with dual power supply which uses an AC source to power the lamp when there is mains power supply and also use a rechargeable battery which is charged with mains source which is to be used during power outage using LEDs as the lighting device. It also serves as immanency sources of light mostly used when there is failure from out public power supply (P.H.C.N)...[read more to downlooad complete material]

0285]. DESIGN AND CONSTRUCTION OF A DIGITAL FREQUENCY COUNTER: Digital frequency counter is an electronic instrument, or component of one, that is used for measuring frequency. Frequency counters usually measure the number of oscillations or pulses per second in a repetitive electronic signal. It detects the frequency value and displays that value with the help of the LCD employed. Depending on the power supply the value of the frequency on the LCD changes. Most frequency counters work by using a [counter] which accumulates the number of events occurring within a specific period of time. After a preset period (1 second, for example), the value in the counter is transferred to a display and the counter is reset to zero. If the event being measured repeats itself with sufficient stability and the frequency is considerably lower than that of the clock oscillator being used, the resolution of the measurement can be greatly improved by measuring the time required for an entire number of cycles, rather than counting the number of entire cycles observed for a pre-set duration. Frequency counters are commonly used in laboratories, factories, and field environments to provide direct frequency measurements of various devices...[read more to downlooad complete material]

0286]. DESIGN AND CONSTRUCTION OF A DIGITAL FREQUENCY METER: Digital frequency meter measures power supply frequency in the range 48 – 52 Hz to an accuracy of three decimal places has been designed and constructed using an 8-bit micro-controller. In addition to determining the frequency and frequency deviation, it also maintains a system clock and a synchronous clock and finds the time difference between them as a measure of the time integral of frequency deviation over a given period...[read more to downlooad complete material]

0287]. DESIGN AND CONSTRUCTION OF A 3KVA SOLAR INVERTER: This work is on design and construction of a 3KVA solar inverter. Solar inverter converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. In solar inverter, Solar panels produce direct electricity with the help of electrons that are moving from negative to positive direction. Most of the appliances that we use at home work on alternative current. This AC is created by the constant back and forth of the electrons from negative to positive. In AC electricity the voltage can be adjusted according to the use of the appliance.  As solar panels only produce Direct current the solar inverter is used to convert the DC to AC...[read more to downlooad complete material]

0288]. DESIGN AND CONSTRUCTION OF A 5KVA SOLAR INVERTER: This work is on solar inverter converts direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection...[read more to downlooad complete material]

0289]. THE DESIGN AND CONSTRUCTION A 1.5KVA AUTOMATIC VOLTAGE STABILIZER USING MICROCONTROLLER AND DISPLAY:Voltage stabilizers are used for many appliances in homes, offices and industries. The mains supply suffers from large voltage drops due to losses on the distribution lines en route. A voltage stabilizer maintains the voltage to the appliance at the nominal value of around 220 volts even if the input main fluctuates over a wide range.
In this work, an automatic voltage stabilizer that can be adapted to any power rating. Its intelligence lays in the program on PIC 16F873A —a low-cost microcontroller that is readily available. The circuit, when used with any appliance, will maintain the voltage at around 220V even if the input mains voltage varies between 90V and 240V.
This acts within 100ms to produce a smoothly varying output whenever input mains voltage changes. (Servo stabilizers move a variable contact on a toroidal auto transformer to adjust the output when input goes up and down, which takes seconds.)
The PIC16F877A is an RISC (reduced instruction set computer) microcontroller with 35 instructions, and hence program development with it is rather tough. But, there are good support programs...[read more to downlooad complete material]

0290]. DESIGN AND CONSTRUCTION A 1KVA AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of a 1kvaAutomatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage stabilizer control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage...[read more to downlooad complete material]

0291]. DESIGN AND CONSTRUCTION OF A 2KVA PURE SINEWAVE POWER INVERTER SYSTEM: This project is titled the design and construction of a pure sine wave inverter system. Pure sine wave inverters produce a pure sine wave output.  This means the power output from a pure sine wave inverter is the same as the mains supply.
What you may not know is that not all inverters are created equal. The output from many inverters is a modified sine wave, inferior to the 240 volt mains power supply. Pure sine wave inverters produce a pure sine wave output....[read more to downlooad complete material]

0292]. DESIGN AND CONSTRUCTION OF A 7.5KVA PURE SINEWAVE POWER INVERTER SYSTEM: An inverter converts DC power to standard AC power. Inverters are used to operate electrical equipment from the power produced by a car or boat battery or renewable energy sources, like solar panels or wind turbines. DC power is what batteries store, while AC power is what most electrical appliances need to run so an inverter is necessary to convert the power into a usable form. For example, when a cell phone is plugged into a car cigarette lighter to recharge, it supplies DC power; this must be converted to the required AC power by a power inverter to charge the phone. There are different types of inverters with different sine wave, but in this work we are focusing on the pure sine wave type of inverter...[read more to downlooad complete material]

0293]. DESIGN AND CONSTRUCTION OF A 5KVA PURE SINEWAVE POWER INVERTER SYSTEM: This project is titled the design and construction of a pure sine wave inverter system. Pure sine wave inverters produce a pure sine wave output.  This means the power output from a pure sine wave inverter is the same as the mains supply. What you may not know is that not all inverters are created equal. The output from many inverters is a modified sine wave, inferior to the 220 volt mains power supply. Pure sine wave inverters produce a pure sine wave output. A pure sine wave is not only critical for the correct functioning of high end electronic equipment, it will...[read more to downlooad complete material]

0294]. DESIGN AND CONSTRUCTION OF A 10KVA PURE SINEWAVE POWER INVERTER SYSTEM:This project is titled the design and construction of a pure sine wave inverter system. Pure sine wave inverters produce a pure sine wave output.  This means the power output from a pure sine wave inverter is the same as the mains supply. What you may not know is that not all inverters are created equal. The output from many inverters is a modified sine wave, inferior to the 220 volt mains power supply. Pure sine wave inverters produce a pure sine wave output. A pure sine wave is not only critical for the correct functioning of high end electronic equipment, it will...[read more to downlooad complete material]

0295]. DESIGN AND CONSTRUCTION OF A 3.5KVA PURE SINEWAVE POWER INVERTER SYSTEM: This project is titled the design and construction of a pure sine wave inverter system. Pure sine wave inverters produce a pure sine wave output.  This means the power output from a pure sine wave inverter is the same as the mains supply. What you may not know is that not all inverters are created equal. The output from many inverters is a modified sine wave, inferior to the 220 volt mains power supply. Pure sine wave inverters produce a pure sine wave output. A pure sine wave is not only critical for the correct functioning of high end electronic equipment, it will...[read more to downlooad complete material]

0296]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER USING SCR: A battery is a device which can store energy in chemical form and convert that energy into electrical energy when needed. It can be secondary (rechargeable) or primary (Non rechargeable) Rechargeable batteries have an advantage over primary batteries with the fact that they can be reused. This is possible by charging a battery, i.e. feeding energy to the secondary cell by forcing electric current through it. A battery basically consists of number of cells, with each cell consisting of two electrodes immersed in an electrolyte solution consisting of an acid and distilled water. In charged state, one of the electrodes consists of a metal whereas the other consists of metal oxide. The acid enables flow of ions between the two electrodes...[read more to downlooad complete material]

0297]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER WITH BATTERY FULL CUT-OFF AND DIGITAL DISPLAY: This project is on an 12 volts automatic battery charger with battery full cut-off and digital display. An automatic battery charger is an acid battery charger that is designed to charge any acid battery. In this work, a voltage sensor circuit is incorporated to sense the voltage of the battery under charge. The charger has the ability to automatically switched OFF when the battery voltage reaches the required optimum level with the help of the relay relay, the transistor and the zener diode when bend the current back to the system, and the system have the ability to indicate when the battery is charging or not, when the battery is empty or fully charged through the digital display...[read more to downlooad complete material]

0298]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC BATHROOM LIGHT WITH BACK-UP LAMP:Sometimes we forget to switch off the bathroom light and it remains on unnoticed for long periods. This circuit solves the problem of electricity wastage by switching off the lamp automatically after 30 minutes once it is switched on. The back-up LED lamp provided in the circuit turns on for three minutes when mains fails. This is helpful especially when you are taking a shower at night...[read more to downlooad complete material]

0299]. DESIGN AND CONSTRUCTION OF A 3.5KVA AUTOMATIC INVERTER CHANGEOVER:This work is on change over selector switch for automatic toggling of an inverter when AC mains is present and vice versa and also the system must enable automatic switching of the battery charger such that when AC mains is present the inverter battery gets charged and when AC mains fails, the battery gets connected with the inverter for supplying AC to the load. The configuration should be such that everything takes place automatically and the appliances are never switched OFF, just reverted from inverter AC to Mains AC and vice versa during mains power failures and restorations...[read more to downlooad complete material]

0300]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC EMERGENCY LIGHTING SYSTEM:An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. Emergency lights are standard in new commercial and high occupancy residential buildings, such as college dormitories. Most building codes require that they be installed in older buildings as well. It is powered by a NiCad battery that is being charged by the main power line when there is no blackout...[read more to downlooad complete material]

0301]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC WATER LEVEL CONTROLLER: This project is titled the design and construction of an automatic water level controller system with water heater compartment. It is designed to control flow and pumping of water to over-head tank and at the same time heat the water in the heat compartment for human usage. The Water Level Controller System is an Electronic Equipment which when electrically connected to the starter of any given pump -set motor will control the operation of the pump- set depending upon the water level in the Source and Destination Storage Tanks. It Switches ON the Pump-set when Water level drops below pre-set level (i.e. T2 level) in Overhead Tank, Switches OFF the Pump-set when Water level in Overhead Tank becomes full (i.e. T1 level),Switches OFF the Pump-set when Water level is low in tank (i.e. S2 level), and Switches ON the Pump-set when there is sufficient water in the tank...[read more to downlooad complete material]

0302]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER: A battery charger is an electrical device employed for charging batteries.  These batteries that are usually charged by battery charger are the storage battery chargers are the storage batteries also known as “accumulator” the battery charger changes.  The alternating current forms the power line into d.c suitable for charging. When the battery is fully changed, is up to it’s maximum, 12 volt, the charger with automatically stop changing with the help of the contact relay, the transistor and the zener diode when bend the current back to the system...[read more to downlooad complete material]

0303]. THE DESIGN AND CONSTRUCTION A 10KVA AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of a 10KVA Automatic Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Voltage stabilizers are useful in devices such as computer Power supplies, alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line...[read more to downlooad complete material]

0304]. DESIGN AND CONSTRUCTION OF AN AUDIO EQUALIZER: This work is on audio equalizer. An equalizer allows the sound in specified frequency bands to be amplified or reduced, in order to adjust the quality and character of the sound. There are different types of equalizer for various uses, such as the parametric equalizers that are controlled using the knobs built into each mixer channel, or the graphic equalizers that allow multiple frequency bands to be adjusted using sliders. Rarely are the sounds of microphones and instruments that are input to the mixer perfect for delivery as-is to the venue. When mixing music that involves many instruments, some parts may inevitably be difficult to pick out. In this situation, adjusting only volume and panning is not sufficient, and equalizers can be used to adjust each frequency band to make the best characteristics of each instrument stand out. This work focuses on the graphic equalizer which allows multiple frequency band control in audio system...[read more to downlooad complete material]

0305]. THE DESIGN AND CONSTRUCTION OF A 35 WATT AUDIO STEREO POWER AMPLIFIER: This work is titled the design and construction of a 35 Watt Amplifier. An audio Amplifier is a device for increasing the audio power of a signal by use of an external energy source. It is design to meet up with the amplification demand in homes, offices, industries and especially in music industries. An audio Amplifier low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a typical audio playback chain, While the input signal to an audio amplifier may measure only a few hundred microwatts, its output may be tens, hundreds, or thousands of watts...[read more to downlooad complete material]

0306]. PERFORMANCE EVALUATION OF A BASIN-TYPE SOLAR DISTILLERY: Adequate quality and reliability of drinking water supply is a fundamental need. Without potable water or drinking water (less than about 500 ppm of salt) human life is not possible. Only 1% of Earth's water is in a fresh, liquid state, and nearly all of this is polluted by both diseases and toxic chemicals. For this reason, purification of water supplies is extremely important. Keeping these things in mind, we have devised a model which will convert the saline ground water into pure and potable water using the renewable source of energy (i.e. solar energy). Solar energy is an abundant, never lasting, and available on site and pollution free energy. Solar Energy is freely available and can be used as a very cheap option to convert saline ground Water through Solar Distillation, by using Solar Stills. The conventional single basin and single slop Passive Solar Still can be used to purify water but the main problem is that the per square meter distillate output is less. So it is need to modify the design of solar still for high output of solar distillate...[read more to downlooad complete material]

0307]. DESIGN AND CONSTRUCTION OF A 100W POWER AMPLIFIER: This work is titled the design and construction of 100W power amplifier. Audio power amplifier is a device for increasing the audio power of a signal by use of an external energy source. It is design to meet up with the amplification demand in homes, offices, industries and especially in music industries. Audio power amplifier amplifies low-power audio signals (signals composed primarily of frequencies between 20Hz – 20kHz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a typical audio playback chain, While the input signal to an audio amplifier may measure only a few hundred microwatts, its output may be tens, hundreds, or thousands of watts.This device is designed to deliver appreciable 100w power to the load. Audio Power amplifiers may be called upon to supply power ranging from a few watts in an audio amplifier to many thousands of watts to a load (speaker). In audio amplifiers the load is usually the dynamic impedance presented to the amplifier by a loudspeaker, and the function is to maximize the power delivered to the load over a wide range of frequencies...[read more to downlooad complete material]

0308]. THE DESIGN AND CONSTRUCTION OF A 45 WATT AUDIO AMPLIFIER: This work is titled design and construction of a 45 Watt Amplifier. An audio Amplifier is a device for increasing the audio power of a signal by use of an external energy source. It is design to meet up with the amplification demand in homes, offices, industries and especially in music industries. An audio Amplifier low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a typical audio playback chain, While the input signal to an audio amplifier may measure only a few hundred microwatts, its output may be tens, hundreds, or thousands of watts.This device is designed to deliver appreciable 45 Watt power to the load. Audio Power amplifiers may be called upon to supply power ranging from a few watts in an audio amplifier to many hundreds or thousands of watts to a load (speaker). In audio amplifiers the load is usually the dynamic impedance presented to the amplifier by a loudspeaker, and the function is to maximize the power delivered to the load over a wide range of frequencies...[read more to downlooad complete material]

0309]. DESIGN AND CONSTRUCTION OF A DIGITAL THERMOMETER: The project is titled “The design and construction of a digital thermometer”. The device display temperature information numerically. Thus help to avoid the limitation due to parallax error in analogue device. The whole system incorporates a microcontroller which is interfaced to other components. This component include temperature sensor, an analogue -to-digital converter, an 8051 microcontroller and a 16x2 LCD display unit. The temperature sensor used is thermistor. The sensor senses temperature and generates an analogue voltage which is proportional to the sensed temperature...[read more to downlooad complete material]

0310]. DESIGN AND FABRICATION OF AN ELECTRIC-GAS-CHARCOAL POWERED OVEN (TRIPLEX POWERED OVEN): Due to irregular power supply common in developing countries, as well as growing high cost of hydrocarbon, the need arises for the development of a triple energy source that uses electricity, gas and charcoal for heating oven chambers. The triplex-powered oven is a combination of components that make possible the use of alternative heat sources. The upper chamber is powered by electricity, the middle chamber is powered charcoal whilst the lower chamber works for the supply of gas located outside the chamber as a heat source. In the upper chamber is a heating element that generates and dissipates heat within the enclosure. The element is connected to a thermostat that regulates the rate of heat generation in the system. Cooking gas is supplied to the burner located in the lower chamber of the oven via a pipe connection to the gas cylinder while the heat required from the charcoal oven is supplied by the coal. Perforations allow for heat dissipation within the lower chamber. The performance test gave oven efficiency of 95.2 per cent. The oven can be adapted for both domestic and industrial purposes and have been found very useful in bakery industries....[read more to downlooad complete material]

0311]. DESIGN AND CONSTRUCTION OF TEMPERATURE CONTROL CIRCUITS: This project is titled design and construction of a temperature control circuits. It is designed to control the temperature of the electric such as electric kettle, oven, incubator to a variable range (0°C -100°C) which must be set by the user or operator. And this can be achieved by the use of temperature sensor known as THERMISTOR. This thermistor is a temperature control device with a high or low resistance value which can go high or low when the temperature is increased or reduced depending on the type. In this project, 100C is used as a set temperature. And this device is design in such a way that when the temperature of the liquid inside the kettle is reached, the heater of the device will automatically switched-off and will maintain the off stage until when the temperature the liquid is dropped 97°C, and then it will switch-ON again in other to maintain that 100°C. And this automatic feature is controlled by a high current relay...[read more to downlooad complete material]

0312]. DESIGN AND CONSTRUCTION OF A FACTORY WORKER ALCOHOL DETECTOR WITH AUTOMATIC SHUTDOWN SYSTEM: The main purpose behind this project is “Drunk working detection”. Now a days, many accidents are happening our factories because of the alcohol consumption of factory worker more especially engine/machine operators. Thus Drunk machines operating is a major reason of accidents in almost all countries all over the world. Alcohol Detector in factory project is designed for the safety of the people working inside the factory.This device measures alcohol intake, displays percentage of alcohol and also automatically shutdown the machine the drunk person is operating (or about to operate) if it is above a particular threshold. Here we use an alcohol sensor circuit along with LCD display and a relay for shutting down the system...[read more to downlooad complete material]

0313]. DESIGN AND CONSTRUCTION OF A FIRE ALARM PANEL: The fire alarm panel is the central element of any fire alarm system. All device  are connected to the fire panel, which typically provides power to them and information is relayed back and forth to determine whether there is a fire and if so activate an appropriate warning. This device receives information from environmental sensors designed to detect changes associated with fire, monitors their operational integrity and provides for automatic control of equipment, and transmission of information necessary to prepare the facility for fire based on a predetermined sequence. The panel may also supply electrical energy to operate any associated sensor, control, transmitter, or relay...[read more to downlooad complete material]

0314]. FOOT STEP POWER GENERATION USING PIEZOELECTRIC SENSOR: This work is on foot step power generation using piezoelectric sensor. In this foot step power generation project is designed to convert foot step, walking and running energy into electrical energy. It is used to generate electricity from by walking or running on foot step. The demand of electrical energy is increasing day by day. But power generation conventional resources are now not enough for total demand of electrical energy. Therefore many researchers and engineers are working on non conventional ways of electrical power generation. Foot step power generation system is also a non conventional electrical energy production system. It converts mechanical energy of foot steps into electrical energy by using transducers. It can be implemented on roads, bus stations and many public places. Foot step power generation system basically converts force energy of foot into electrical energy by using piezoelectric sensor. Piezoelectric sensor is transducer which converts force energy into electrical energy...[read more to downlooad complete material]

0315]. ESTIMATION OF SOLAR ISOLATION OF TEMPERATURE VARIATION FROM SOLAR HEATED LIQUID:Renewed interest of solar as an energy source in heating systems has gained relevance in various fields and in agricultural operations such as dairy farm hot water supply and food preservation. Microwave heating and food irradiation using solar systems have also been used on commercial scale. Many of these applications require heated air at relatively low temperatures. Traditional heat production is through wood, natural gas or LP gas. Fuel wood account for over 50% of the overall energy consumption in Nigeria, about 80% of these are consumed as firewood mainly in the rural households...[read more to downlooad complete material]

0316]. DESIGN AND CONSTRUCTION OF A CAR ANTI-THEFT PROTECTION WITH BUZZER: This project work is titled design and construction of a car anti-theft. A car anti-theft device is an electronic security device fitted to an automobile that prevents an intruder or unauthorized person from moving the car to a far distance. The system demobilizes the car after few seconds the user moved the car. This is the circuit diagram of car anti-theft to protect and increase the security of your car, prevent your from stealing. This circuit is very simple, low cost and easy to built. When key-operated switch S2 of the car is turned on, 12V DC supply from the car battery is extended to the entire circuit through polarity-guard diode D5. Blinking LED1 flashes to indicate that the car protection circuit is enabled. It works off 12V power supply along with current-limiting resistor R4 in series...[read more to downlooad complete material]

0317]. DESIGN AND CONSTRUCTION OF A CAR THEFT EXPOSER: This is the circuit diagram of car theft exposer to protect and increase the security of your car, prevent your from stealing. This circuit is very simple, low cost and easy to built. When key-operated switch S2 of the car is turned on, 12V DC supply from the car battery is extended to the entire circuit through polarity-guard diode D5. Blinking LED1 flashes to indicate that the car protection circuit is enabled. It works off 12V power supply along with current-limiting resistor R4 in series...[read more to downlooad complete material]

0318]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED SOLAR CHARGE CONTROLLER FOR STREET LIGHT: Solar charge controller limits the rate at which electric current is added to or drawn from solar panel to electric batteries. It prevents overcharging and may protect against overvoltage, which can reduce battery performance or lifespan, and may pose a safety risk. It may also prevent completely draining (“deep discharging”) a battery, or perform controlled discharges, depending on the battery technology, to protect battery life. The terms “charge controller” or “charge regulator” may refer to either a stand-alone device, or to control circuitry integrated within a battery pack, solar battery-powered device, or battery charger...[read more to downlooad complete material]

0319]. DESIGN AND CONSTRUCTION OF SOLAR CHARGE CONTROLLER:Solar charge controller limits the rate at which electric current is added to or drawn from solar panel to electric batteries. It prevents overcharging and may protect against overvoltage, which can reduce battery performance or lifespan, and may pose a safety risk. It may also prevent completely draining (“deep discharging”) a battery, or perform controlled discharges, depending on the battery technology, to protect battery life. The terms “charge controller” or “charge regulator” may refer to either a stand-alone device, or to control circuitry integrated within a battery pack, solar battery-powered device, or battery charger...[read more to downlooad complete material]

0320]. DESIGN AND CONSTRUCTION OF A COMPUTER CABLE TESTER:This project is titled the design and construction of a computer cable tester. It is designed to meet up with the safety and accuracy demand in flow of signal in computer cable. It is design to detect If the cable carries the signal, this indicates that all the circuits are closed, meaning that electric current can move unimpeded through the wires, and that there are no short circuits, or unwanted connections, in the wire. A cable tester can identify if the wires are paired correctly. It can also show if there is a break in the insulation, a situation which allows crosstalk between two wires that should not be connected. The tester can also tell whether the cable has the proper level of resistance...[read more to downlooad complete material]

0321]. IMPROVING THE RESPONSE TIME OF AN ATM BASED ELECTRONIC PAYMENT SYSTEM USING RECURSIVE ALGORITHM: Systems that facilitate card-less financial transactions are provided. The innovation enables card-less ATM (automated teller machine) transactions such as cash withdrawals, transfers, balance inquiries, etc. In aspects, customers can set up an ‘electronic wallet’ account based upon a pre-set range or otherwise. Accordingly, access to the ‘electronic wallet’ is granted or denied based upon responses to challenges presented. However, often it is slow response is usually notice on the system when performing all these transaction. This work deals on how this slow response can be tackled using recursive algorithms...[read more to downlooad complete material]

0322]. DETERMINATION OF THE EARTH MAGNETIC INTENSITY OF ULI: Earth’s magnetic field is generated by an interaction between rotation in the planet’s core and electrical currents. The field then creates the magnetosphere, which acts sort of like a force field, protecting the planet from the brunt of the sun's solar wind. This field has both a North and South pole, which can be used for navigational purposes, and they are not static. The field itself is not fixed either, and about every 450,000 years or so, the poles actually reverse. This puts the magnetic North where the South was, and vice versa. In this work, the earth magnetic intensity of Uli Community in Anambra State was determined using deflection magnetometer...[read more to downlooad complete material]

0323]. ESTIMATION OF WASTES GENERATED IN UNIVERSITY OF UYO:The purpose of this study is to outline the major trends and challenges that will shape the future of waste management for the next few decades in UNIUYO. There are certain trends and facts that more or less create the ‘bigger picture’ in which the waste management industry will evolve.  It is clear that new challenges are emerging, and the current situation must be seen in a different way because the disposal site is limited and also it has to be made cost effective. Amounts of waste generation are largely determined by two factors: first, the rate of population increasing in UNIUYO and second, its per capita waste generation - which are controlled by the evolution of economic growth, life style and food habits.  The present study explains the correlation analysis of among different factors of waste and the objective is to assess the future waste generation stream in UNIUYO. The results show that for a decoupling to take place between economic growth and waste generation, the waste generation by UNIUYO students in relation to their economic activities must decrease in the future...{read more to download full material}

0324]. DESIGN AND CONSTRUCTION OF A 12V STANDING FAN POWERED BY A 20W SOLAR STANDING FAN: This work is on a 12v/20w solar standing fan. The project involves using solar energy to recharge power standing fan. Rechargeable solar standing fan, charges with solar energy. Solar Standing fan operated either by solar panel and battery. Solar panel charges the battery during the day while the rechargeable supplies the energy stored in the battery to the fan during the night...{read more to download full material}

0325]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC EMERGENCY LIGHTING SYSTEM:An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. Emergency lights are standard in new commercial and high occupancy residential buildings, such as college dormitories. Most building codes require that they be installed in older buildings as well. It is powered by a NiCad battery that is being charged by the main power line when there is no blackout...{read more to download full material}

0326]. DESIGN AND CONSTRUCTION OF AN AC/DC POWER SUPPLY FOR ELECTRONICS DEVICE (A CASE STUDY OF A RADIO TRANSMITTER POWER SUPPLY) :This project is titled design and construction of a of an ac/dc power supply for electronics device. This power supply is basically a Production of low voltage DC power supply from AC . Here a transformer is used to step down the AC mains input voltage to the required DC level...{read more to download full material}

0327]. DESIGN AND CONSTRUCTION OF A SOLAR CONTROLLED IRRIGATION SYSTEM:Costs of diesel for irrigation systems are increasing sharply due to the lack of availability of diesel in the markets. Moreover, the use of diesel fuel is also more expensive in the “new lands” due to the remoteness of desert farms. Taking into account the costs of transportation of diesel, maintenance and overhauling of generators, using diesel will no longer be economically feasible or affordable for those farms in the near future...{read more to download full material}

0328]. DESIGN AND CONSTRUCTION OF A PARABOLIC SOLAR COOKER: The sun’s energy is really powerful. Solar energy is renewable and it’s free. We can use it to make electricity, to heat buildings and to cook. The field of cooking consumes many fossil fuels such as gas and wood. Million people cannot find enough gas and/or wood to cook, so using solar cookers is a good idea. During this work, we designed, built and studied a parabolic solar cooker...{read more to download full material}

0329]. DESIGN AND FABRICATION OF AN AUTOMATIC WHITEBOARD CLEANER: Now-a-days white boards are widely used in almost every educational institute. About 70-80% educational institute around the world uses white board as the writing medium in their class room. They are large in size, for that reason it is very time consuming process to erase the writings from the board with duster...{read more to download full material}

0330]. DESIGN AND CONSTRUCTION OF AN ELECTRONICS LETTER BOX: This work is on design and construction of an electronic letter box .This   project is developed for the users to find out whether any letter is inside the letter box and also to display the number of letters inside the letter box. An IR Transmitter and Receiver are connected at the opening of the letter box.  In normal operation, the rays transmitted from the transmitter falls on the receiver.  When anyone puts letter inside the letter box, the letter hides the rays and thereby the receives no signal at the particular instance.  Thus it senses that there is a letter inside.  The I.C connected with the sensor counts that there is one letter inside.  When the next letter is put inside the letter box, the sensor senses the letter and the microcontroller counts two.  The same way it counts all the letters inside. A display and buzzer is connected inside the house.  The owner of the house can identify the number of letters inside the letter box. When the letter box is opened, the IC resets and the count goes to zero...{read more to download full material}

0331]. DESIGN AND CONSTRUCTION OF AN ELECTRONICS LETTER BOX WITH COUNTERS AND INDICATORS:This work is on design and construction of an electronic letter box with counters and indicators.This   project is developed for the users to find out whether any letter is inside the letter box and also to display the number of letters inside the letter box. An IR Transmitter and Receiver are connected at the opening of the letter box.  In normal operation, the rays transmitted from the transmitter falls on the receiver.  When anyone puts letter inside the letter box, the letter hides the rays and thereby the receives no signal at the particular instance.  Thus it  senses that there is a letter inside.  The microcontroller connected with the sensor counts that there is one letter inside.  When the next letter is put inside the letter box, the sensor senses the letter and the microcontroller counts two.  The same way it counts all the letters inside. A display and buzzer is connected inside the house.  The owner of the house can identify the number of letters inside the letter box...{read more to download full material}

0332]. DESIGN AND CONSTRUCTION OF AN ELECTRONICS LETTER BOX WITH COUNTERS AND WIRELESS FEEDBACK:This work is on design and construction of an electronic letter box with counters and wireless feedback. This   project is developed for the users to find out whether any letter is inside the letter box and also to display the number of letters inside the letter box thereby sending the senders name via mobile phone.An IR Transmitter and Receiver are connected at the opening of the letter box.  In normal operation, the rays transmitted from the transmitter falls on the receiver.  When anyone puts letter inside the letter box, the letter hides the rays and thereby the receives no signal at the particular instance.  Thus it  senses that there is a letter inside...{read more to download full material}

0333]. DESIGN AND CONSTRUCTION OF AN INFRARED SHADOW DETECTOR WITH AN ALARM: This shadow alarm circuit can sense a moving shadow in a confined area. It can be used to protect things from theft. When somebody approaches the unit, it will give a loud alarm to abort the attempt of theft. The circuit uses the light sensing property of the Photo diode. The circuit uses the light sensing property of the PIN Photodiode. The p-n junction of the photo diode gives light current when it is forward biased, it  is designed as a voltage comparator...{read more to download full material}

0334]. DESIGN AND CONSTRUCTION OF A GSM (PHONE) BASED HOME AUTOMATION SYSTEM USING ARDUINO: This device is design to monitor and control electrical devices (Analog and Digital) remotely using GSM modem/phone.  The GSM modem provides the communication mechanism between the user and the microcontroller system by means of SMS messages. User can control multiple electrical devices by sending suitably formatted SMS message to the microcontroller based control system.  These SMS commands are interpreted by microcontroller system and are validated. If the SMS command received is valid then it takes the necessary action to control the said devices. This system also continuously monitors the status of devices connected to it. If the status of any critical device changes from ON to OFF or vice versa, then microcontroller based system automatically sends the SMS alerts back to user. After completion of the command implementation this system sends the confirmation messages back to the calling user...{read more to download full material}

0335]. DESIGN AND CONSTRUCTION OF A PASSWORD BASED DOOR LOCK SYSTEM USING 8051 MICROCONTROLLER: This system demonstrates a password based door lock system wherein once the correct code or password is entered, the door is opened and the concerned person is allowed access to the secured area. Again if another person arrives it will ask to enter the password. If the password is wrong then door would remain closed, denying the access to the person...{read more to download full material}

0336]. DESIGN AND CONSTRUCTION OF A PASSWORD BASED CIRCUIT BREAKER: The circuit breaker is an absolutely essential device in the modern world, and one of the most important safety mechanisms in your home. Whenever electrical wiring in a building has too much current flowing through it, these simple machines cut the power until somebody can fix the problem. Without circuit breakers (or the alternative, fuses), household electricity would be impractical because of the potential for fires and other mayhem resulting from simple wiring problems and equipment failures. This system uses a microcontroller and keypad to control and protect electric power. Keypad is used to enter the password. The password which is entered is compared with the predefined password. If entered password is correct then the corresponding electrical line is turned ON or OFF...{read more to download full material}

0337]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC DOOR ALARM SYSTEM USING PASSIVE INFRARED (PIR) BASED :The project is on a passive infrared (PIR) based automatic door alarm system used in places like shopping malls, hotels and theatres. This project proposes a system of automatic sensing any body movement object near the door. This is achieved with help of a PIR (Passive Infrared) sensor. A live body generally emits infrared energy which is sensed by the PIR sensor from a considerable distance. This sensing signal is fed to an integrated circuit to trigger a buzzer. When a body approaches within the operating range of the sensor, it sends a logical command through an alarm indicating that someone is approaching the door. If there is no further movement within the PIR operating range...{read more to download full material}

0338]. DESIGN AND CONSTRUCTION OF AN ELECTRONICS NOTICE BOARD USING LED: As the name implies, the purpose of having a notice board is to pass notice to the public or passerby of the particular place it is been placed or mounted. Notice board is a surface intended for the posting of public messages, for example, to advertise items wanted or for sale, announce events, or provide information. This notice board is made of a light emitting diode, or they can be placed on the road or public places so people can other people to read and see. LED notice board uses lighting as a means of conveying their information. Light-emitting diode (LED) is highly used because it is way of way to increase visibility...{read more to download full material}

0339]. DESIGN AND IMPLEMENTATION OF ELECTRONICS SEQUENTIAL SIGN PATTERN DISPLAY: This design implementation of this electronic sequential sign post display employs the use of some specialized components. This section of the project introduces the reader to the different section of the project and the components that makes them up. Emphasis are laid on describing the behaviour and operational system of the components as related to the project modeling, analysis, design and implementation of an ELECTRONIC SIGN POST, which is made up of a power supply, a shift register, a counter, multivibrator (555CMOSI.C) transistor, relay, resistors of different ohmic values capacitors...{read more to download full material}

0340]. ELECTRICAL DESIGN AND DRAFTING OF A STANDARD SWIMMING POOL:Humans have enjoyed swimming pools for thousands of years, but they haven't always installed electric lights in them or circulated the water with pumps. Adding those and other electric features makes pools potentially lethal, and more enjoyable. But one of the challenges then was that no one can swim in the night time because of darkness.
Nowadays, an enjoyable and standard swimming pool is the one with a complete electrical installation. The main reasons of installing electricity in swimming pole are for enjoyment, illumination, and beautification. A standard swimming is the one that have complete electrical installation, which composes of a water pump for automatic pumping or refilling of water to the pool, beautiful lighting fixture for beautification and illumination of the water and pool environment...{read more to download full material}

0341]. DESIGN OF EXTERNAL LIGHTING USING CONVENTIONAL POWER SUPPLY:This project is on design of external lighting using conventional power supply. As the name implies, an external lighting is any electrical lighting that is fixed outside house for the illumination of such environment or is an electrical device used to create artificial light by use of an electric lamp that is used outside the house. All external light fixtures have a fixture body and a light socket to hold the lamp and allow for its replacement.
There are so many types of external lighting system such as fence lighting system, security lighting system for building or house, and/or street lighting system etc. but among all types of external lighting system, security lighting was considered and designed in this project and a 220VAC power supply was used to power it. This work is aimed at designing a home security light as the external lighting using 220VAC as the power supply...{read more to download full material}

0342]. THE DESIGN AND CONSTRUCTION OF ELECTRONIC DOOR BELL: An electronic bell is a signaling device typically placed near an entry door to a building. When a visitor presses a button the bell rings inside the building, alerting the occupant to the presence of the visitor. Modern house bells are electric — they are actuated by an electric switch. In most wired systems, a button on the outside next to the door, located around the height of the doorknob, activates a signaling device (usually a chime, bell, or buzzer) inside the building. Pressing the electronic bell button, a single-pole, single-throw (SPST) pushbutton switch momentarily closes the doorbell circuit. The function of the indicator is to indicate when someone is pressing the button...{read more to download full material}

0343]. DYNAMIC ANALYSIS OF SHUNT WOUND D.C MOTOR:This work is on analysis of a shunt wound dc motor. Shunt DC Motors operate on direct current. As such, the field windings and armature are connected in a parallel combination, and in electrical terminology a parallel combination is known as a shunt. This type of motor is a "shunt-wound" DC Motor and the type of winding is called a shunt winding. The construction of a DC Shunt Motor is the same as any other DC motor. It contains all the fundamental parts, which include a stator (field windings), a rotor (also known as armature), and a commutator. This work focuses on the analysis of a Shunt wound DC Motor...{read more to download full material}

0344].DESIGN AND CONSTRUCTION OF AN ELECTRIC SHOCK GUN: Electric shock gun uses a temporary high-voltage low-current electrical discharge to override the body's muscle-triggering mechanisms. The recipient is immobilized via two metal probes connected via wires to the electroshock device. The recipient feels pain, and can be momentarily paralyzed while an electric current is being applied. Electric shock guns are devices that put out a non lethal, high voltage shock!  Touching an attacker will immobilized him for several minutes. The advantage of an electric stun gun is that it is non lethal and does no permanent damage. In spite this fact your attacker can be immobilized for as long as 15 minutes. Exactly how long depends on the voltage of the electric shock gun and the duration of contact...{read more to download full material}

0345]. DESIGN AND CONSTRUCTION OF AN ELECTRIC OVEN: This paper presents the design, construction and testing of an electric oven. A critical analysis of the design was also carried out. The oven consisted of the oven chamber, racks, a heating element, a variable thermostat and a suitable lagging material. The oven was constructed using locally available materials and technology. It was then assembled and tested. Tests results showed that on the average, it took 22.9 minutes and 28.8 minutes to bake meat-pies and bread loaves respectively in the oven...{read more to download full material}

0346]. DESIGN AND CONSTRUCTION OF AN ELECTRIC COOKER:This project entails the design and construction of electric cooker, the cooker is powered by electricity because it is cheap and readily available. The energy conservation in this electric cooker involves the conversion of electrical energy to heat energy in the system. Materials used for the construction were selected based on their reliability availability, maintainability and durability. The device was tested and found to be working properly...{read more to download full material}

0347]. DESIGN AND CONSTRUCTION OF AN ELECTRIC GAS COOKER WITH TEMPERATURE CONTROL OVEN: This work is on an electric gas cooker with temperature control oven. An electric gas cooker is an electric and gas powered cooker for heating and cooking of food. An electric gas cooker has two different heating place, one for electric powering and the other for gas. An electric cooker  is powered by electricity, while gas cooker is powered by gas. A gas cooker uses natural gas, propane, butane, liquefied petroleum gas or other flammable gas as a fuel source. An electric cooker used to incorporate with an oven. An oven is a thermally insulated chamber used for the heating, baking or drying of a substance and most commonly used for cooking. An electric cooker and oven operates with the same power source. There will be knobs to determine the temperature of the cooker and the oven. The temperature of the oven is to be controlled automatically using a temperature sensor known as thermostat or thermistor...{read more to download full material}

0348]. DESIGN AND CONSTRUCTION OF FUELLESS GENERATOR: This is a feature that makes it safe to use any where when compared to generator. The programme of work done described in this project work represents an exploration of the working principles of a generator without making use of fuel or any type of liquid, hence “fuelless generator’’ which was invented by Nikola Tesla after patenting  a successful method for producing alternating current. He claimed the invention of an electric generator that would not ‘’consume any fuel’’. However, the system design comprises of its method of construction, principles of operation, experiment, test and results...{read more to download full material}

0349]. ELECTRONIC CODE LOCK WITH USER DEFINED PASSWORD USING 8051 MICROCONTROLLER (AT89C51): This work is on an electronic lock or digital lock. An electronic lock or digital lock is a device which has an electronic control assembly attached to it. They are provided with an access control system. This system allows the user to unlock the device with a password. The password is entered by making use of a keypad. The user can also set his password to ensure better protection...{read more to download full material}

0350]. DESIGN OF A PHOTOVOLTAIC CELL WITH COPPEROXIDE ELECTRODE: This work focuses on designing photovoltaic cell  using copperoxide electrode Copper (I) oxide (Cu 2 O) is a potential material for the fabrication of low cost solar cells for terrestrial application. A detailed survey on the previous work so far carried out on Cu 2 O based solar cells has been presented in this work...{read more to download full material}

0351]. NEW DYNAMIC MODEL OF EARTH FAULT RELAY FOR SINGLE PHASE POWER SYSTEM: The single-phase earth fault is the most common fault type on high voltage transmission line. But the sensitivity of single-phase distance relays can't satisfy the requirement of power system for such reason a dynamic model type of earth was introduced to achieve that security required. Very high levels of faulty current in electrical power systems are usually caused by short circuit faults between phases or between phases and earth...{read more to download full material}

0352].DESIGN AND CONSTRUCTION OF AN ECONOMICAL WATER PUMP CONTROLLER:This project is titled the design and construction of an economical water pump controller which is also known as  an automatic water level controller system. It is designed to control flow and pumping of water to over-head tank. The economical water pump controller is an Electronic Equipment which when electrically connected to the starter of any given pump -set motor will control the operation of the pump- set depending upon the water level in the Source and Destination Storage Tanks. It Switches ON the Pump-set when Water level drops below pre-set level (i.e. T2 level) in Overhead Tank, Switches OFF the Pump-set when Water level in Overhead Tank becomes full (i.e. T1 level),Switches OFF the Pump-set when Water level is low in tank (i.e. S2 level), and Switches ON the Pump-set when there is sufficient water in the tank.This work is aim at constructing an economical water pump controller that will control the flow and pumping of water in the overhead  and underground tank...{read more to download full material}

0353]. POWER TRANSFORMER WINDING THERMAL ANALYSIS CONSIDERING LOAD CONDITION AND TYPE OF OIL: This paper presents steady state temperature distribution of a power transformer layer-type winding using conjugated heat transfer analysis, therefore energy and Navier-Stokes equations are solved using finite difference method. Meanwhile, the effects of load conditions and type of oil are investigated using the model. Oil in the transformer is assumed nearly incompressible and oil parameters such as thermal conductivity, special heat, viscosity, and density vary with temperature. Comparing the results with those obtained from finite integral transform checks the validity and accuracy of the proposed method...{read more to download full material}

0355]. PROTECTION OF A 33KV TRANSMISSION LINE:Transmission line power systems are associated with serious issues of faults on high voltage transmission lines. Instant isolation of fault is necessary to maintain the system stability. Protective relay utilizes current and voltage signals to detect, classify, and locate the fault in transmission line...{read more to download full material}

0356]. POWER SYSTEM RELIABILITY IN NIGERIA:The importance of power system reliability is demonstrated when our electricity supply is disrupted, whether it decreases the comfort of our free time at home or causes the shutdown of our companies and results in huge economic deficits. The objective of Assessment of Power System Reliability is to contribute to the improvement of power system reliability...{read more to download full material}

0357]. PRICING/TARIFF MECHANISM METHODOLOGY OF ELECTRICITY IN NIGERI:The price at which electricity is sold is known as tariff for electricity and several factors come into play while determining the tariff. Normally the tariff of electricity is mentioned in rate per kilowatt hour of power consumed or rate per kWh. 1 kWh refers to the amount of electricity consumed when an appliance of one kilowatt power rating runs for one full hour or sixty minutes. Of course all appliances have different power ratings so the power consumption is calculated accordingly. For example a half kilowatt appliance would need to run for two hours to consume one unit of electricity. The aim of this work is to discuss how electric tariff is been calculated...{read more to download full material}

0358]. DESIGN AND CONSTRUCTION OF A PROXIMITY DETECTION SENSOR: proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. Examples of proximity sensor usage include detecting an out-of-paper condition in a printer or a mobile phone screen that dims to save battery life when placed near a face...{read more to download full material}

0359]. PROGRAMMABLE CONTROL OF INVERTED FED INDUCTION MOTOR USING CONTROLLER:This paper presents an advanced three phase inverter topology the Source Inverter and its control using microcontroller 89C52. Inverter employs second order filter network at front end which provides unique buck-boost feature for inverter. The inverter can be controlled by any traditional PWM method. Here the modified maximum constant boost PWM method is utilized for inverter control...{read more to download full material}

0360]. CONSTRUCTION OF PVS CONDUIT WIRING SYSTEM OF TWO BEDROOM BUNGALOW: Building wiring is the electrical wiring and associated devices such as switches, meters and light fittings used in buildings or other structures. Electrical wiring uses insulated conductors. This project present a practical demonstration of how to carryout the wiring of a two bedroom bungalow, using PVC conduit system. In recent times surface wiring is gradually giving way to conduit wiring where much of the cable are concealed. PVC pipes are used because of it cost friendliness, compared to metal conduit. In carryout this construction a careful attention is given to the IEF regulations. Calculations are made for current consumption, space factor, diversity factors and other necessary consideration that guarantees safely of material and personnel...{read more to download full material} 

0361]. DESIGN OF AN ELECTRICITY PREPAID METER: Electric utilities use electric meters installed at customers premises to measure electric energy delivered to their customers for billing purposes. They are typically calibrated in billing units, the most common one being the kilowatt hour [kWh]. They are usually read once each billing period...{read more to download full material}

0362]. DESIGN AND IMPIMENTATION OF A PYROMETER:Pyrometer is a type of remote-sensing thermometer used to measure the temperature of a surface. in the modern usage, it is a device that from a distance determines the temperature of a surface from the spectrum of the thermal radiation it emits. A modern pyrometer has an optical system and a detector. The optical system focuses the thermal radiation onto the detector...{read more to download full material}

0363]. DESIGN OF AN ENVIRONMENT MONITORING SYSTEM: Environment Monitoring System project is developed for the users to control a Robot with Humidity sensor, Fire sensor and metal detector. The user can control the movements of the robot like hand up, hand down, Left and right. When the user presses a specific button of the computer, a signal corresponding to the operation is sent through serial port. The microcontroller receives the signal through serial port and controls the multi channel RF transmitter ...{read more to download full material}

0364]. DESIGN AND CONSTRUCTION OF AN ENERGY CONSUMPTION INDICATOR: Electricity demands in hospitals and other public places are characterized by their need for high quality, guaranteed supplies. The existence of captive electricity uses and the size and regularity of the electrical and heat loads required by hospitals are aspects that could well buttress the possibility of installing cogeneration plants fired by natural gas (CHP). The purpose of this project is to estimate the CHP technical potential in hospitals. Based on a classification of hospitals by specific energy consumption indicators, this potential are assessed, taking into consideration gas fueled engines associated with absorption cooling systems. A potential figure of approximately 500 MWe was obtained, whose effective implementation runs up against the obstacles inherent to hospital sector...{read more to download full material}

0365]. TELECONFERENCING SYSTEM: This work is on teleconferencing system. A teleconference is a meeting of three or more people who are separated by distance, using electronic communication. The participants might be in the same city, or could be thousands of miles apart, in different countries on different continents. They may interact with one another, or the conference might be one-way – a lecture or presentation that a number of people can attend at the same time from different places. Sometimes, there are only three or four people involved, sometimes 25 or 30, sometimes hundreds. Teleconferencing is a way of bringing a group of people together from different locations without having to travel long distances...{read more to download full material}

0366]. DESIGN AND CONSTRUCTION OF A REGULATED AC VOLTAGE STABILIZER: A voltage stabilizer is an electrical appliance used to feed constant voltage current to electrical gadgets like ACs and computers, and protects them from damage due to voltage fluctuations. It works on the principle of a transformer, where the input current is connected to primary windings and output is received from secondary windings. When there is a drop in incoming voltage, it activates electromagnetic relays which add to more number of turns in the secondary winding, thus giving higher voltage which compensates for loss in output voltage. When there is rise in the incoming voltage, the reverse happens, and, thus, the voltage at the output side remains almost unchanged...{read more to download full material}

0367]. DESIGN AND CONSTRUCTION OF A REMOTE CONTROL DISH ANTENNA TRACKING SYSTEM: This work is on remote control dish antenna tracking system. The main scope of the project is to control the Dish antenna from a remote area. Stepper motors operate differently from normal DC motors, which rotate when voltage is applied to their terminals...{read more to download full material}

0368].DESIGN AND CONSTRUCTION OF A REMOTE MONITORING SYSTEM CONTROL SYSTEM WITH AUTOMATIC IGNITION SYSTEM USING GSM BLUETOOTH: Nowadays, vehicle thefts are on the rise, and therefore, demand urgent security measures to ensure proper security to vehicles and other transportation systems. If this proposed system is installed in the vehicle that someone tries to steal, then this system prompts and sends information to the owner of the vehicle through SMS using GSM technology. An added advantage of this system is that the owner can send back another SMS which can disable the ignition of the vehicle...{read more to download full material}

0369]. DESIGN AND CONSTRUCTION OF RESONANCE TUBE: The velocity of sound in air may be found quite simply by using the resonance of a column of air in a tube. A tuning fork of known frequency is sounded over the upper end, the air in the tube vibrates and a note is heard. The length of the air column is adjusted by raising the tube out of the water until a point is found where resonance occurs and a loud note is produced using a resonance tube...{read more to download full material}

0370]. DESIGN AND CONRTUCTION OF AN RF BASED HUMAN MOVEMENT MONITORING FOR RESTRICTED AREAS: It is the project it name is RF based human movement monitoring for Restricted Areas. To know the human movement is the border is a big a problem in our country. But those systems are not reliable and high cost and the need of the manual power. This project has overcome the disadvantages...{read more to download full material}

0371]. DESIGN AND CONSTRUCTION OF RF CONTROLLED ROBOTIC VEHICLE WITH LASER BEAM ARRANGEMENT: This work on controlling a robotic vehicle by using a RF technology for remote operation. A low power laser light is interfaced for demonstrating the possibilities of destroying a distant object by its beam. An 8051 series of microcontroller is used for the desired operation...{read more to download full material}

0372]. DESIGN AND CONSTRUCTION OF AN RF GSM MOBILE JAMMER: This work is on RF GSM mobile jammer. The main purpose of this Final Year Project is designing a mobile jammer that enables user to jam the mobile devices at undesired places such as meeting room, class room, library, and worship places. The mobile device can jam all the mobile devices nearby. Therefore, it is required to design a complete system which contents power system, IF section and RF section...{read more to download full material}

0373]. DESIGN AND CONSTRUCTION OF RFID AND PASSWORD BASED AUTOMATIC DOOR ACCESS CONTROL SYSTEM:Traditional lock systems using mechanical lock and key mechanism are being replaced by new advanced techniques of locking system. These techniques are an integration of mechanical and electronic devices and highly intelligent. One of the prominent features of these innovative lock systems is their simplicity and high efficiency...{read more to download full material}

0370]. DESIGN AND CONSTRUCTION RFID BASED ATTENDANCE MANAGEMENT SYSTEM: Attendance needs to be taken at various places including colleges, school for students and in the industries for the login logout time of employees. Radio Frequency Identification (RFID) based attendance management system can be used in any college or university or company. Main objective of RFID based Attendance System project is to take the attendance of students or employees. Microcontroller does the task of storing the attendance of the respective person in the Microcontroller memory...{read more to download full material}

0370]. DESIGN AND CONSTRUCTION OF RFID BASED GARAGE DOOR ENTRY: The RFID Garage Door Entry System team is a project team which seeks to create an automation solution using a relatively un-harnessed technology called Radio Frequency Identification (RFID). Using RFID technology, the team seeks to combine the functionality and convenience of automated remote transmission with an existing garage door opener system. The intent of this project was to build a system that allowed a garage door to open wirelessly with no interaction from the user...{read more to download full material}

0371]. DESIGN AND CONSTRUCTION RFID BASED HIGHWAY TOLL TAX COLLECTION SYSTEM: Electronic toll collection system allows the vehicle drivers to pass the toll tax booths without stopping at the toll booths. The toll amount is deducted from the RFID card. This RFID card is rechargeable and account is stored on the records...{read more to download full material}

0372]. DESIGN AND CONSTRUCTION OF AN RFID BASED SECURITY SYSTEM USING ARDUINO: RFID based security system using arduino project detects whether RFID card is valid or invalid. If the card is invalid then system turns on the buzzer. However if the RFID card shown by user is valid then the DC motor is turned on and at the same time Relay is turned on.Arduino based RFID access control system provides us the feature of Automated access control system...{read more to download full material}

0373]. DESIGN AND CONSTRUCTION OF AN RFID BASED SECURITY SYSTEM: This work is on radio frequency identification security system. This project aimed to develop a wireless system to detect and allow only the authorized persons. The system was based on Radio Frequency Identification (RFID) technology and consists of a passive RFID tag. The passive micro transponder tag collects power from the 125 KHz magnetic field generated by the base station, gathers information about the Tag ID and sends this information to the base station...{read more to download full material}

0374]. THE DESIGN AND CONSTRUCTION OF HOUSE BELL: A house bell is a signaling device typically placed near an entry door to a building. When a visitor presses a button the bell rings inside the building, alerting the occupant to the presence of the visitor. Modern house bells are electric — they are actuated by an electric switch...{read more to download full material}

0375]. DESIGN AND CONSTRUCTION OF A 220V/12V POWER SUPPLY SYSTEM: This work is on 220vac to 12vac power supply using transformer, which served as a step down transformer whose secondary voltage is less than its primary voltage. It is designed to reduce the voltage (220v) from the primary winding to 12v in the secondary winding.
As a step-down unit, the transformer converts high-voltage, low-current power into low-voltage, high-current power. The larger-gauge wire used in the secondary winding is necessary due to the increase in current. The primary winding, which doesn’t have to conduct as much current, may be made of smaller-gauge wire...{read more to download full material}

0376]. DESIGN AND CONSTRUCTION OF A 220V/110V STEP DOWN TRANSFORMER: This work is on 220vac to 110vac power supply using transformer, which served as a step down transformer whose secondary voltage is less than its primary voltage. It is designed to reduce the voltage (220v) from the primary winding to 110v in the secondary winding. As a step-down unit, the transformer converts high-voltage, low-current power into low-voltage, high-current power. The larger-gauge wire used in the secondary winding is necessary due to the increase in current. The primary winding, which doesn’t have to conduct as much current, may be made of smaller-gauge wire...{read more to download full material}

0377]. DESIGN AND CONSTRUCTION OF A CANISTER VACUUM CLEANER: Cleaning has became a basic need of all the human beings. Throughout the world many researchers are conducting experiments in order to eradicate and solve the dust removing process. There should be improvision with innovative ideas and techniques which may ensure good health...{read more to download full material}

0378]. THE DESIGN AND CONSTRUCTION OF HOUSE BELL WITH INDICATING LIGHT: A house bell is a signaling device typically placed near an entry door to a building. When a visitor presses a button the bell rings inside the building, alerting the occupant to the presence of the visitor. Modern house bells are electric — they are actuated by an electric switch...{read more to download full material}

0379]. DESIGN AND CONSTUCTION OF LPG (LIQUIDIFIED PETROLEUM GAS) ALARMING SYSTEM: One of the most common types of energy source used in domestic is propane in which liquefied gas contains. Though the safety issues are considered by the company, inability to differentiate between gas and other liquid  has become very common accident which can cause damage to human lives and property. This paper presents a low cost, power efficient centralized LP gal alarm system. The system has two main devices: the gas detector and the centralized alarm unit. The gas detector that is located close to the gas usage point (gas cylinder) is a battery operated device that is designed...{read more to download full material}

0380]. DESIGN AND CONSTRUCTION OF A LOW FUEL INDICATOR SYSTEM:A low fuel indicator system for a motor vehicle comprises a light-emitting indicator which is energized or de-energized by an output signal derived from a voltage comparator which receives a reference voltage from a reference voltage source and a variable voltage signal from a time delay circuit, which variable voltage signal is derived from a voltage signal generated by a fuel level sensor in a fuel tank of the vehicle. The light-emitting indicator is energized when the fuel level in the fuel tank falls below a predetermined low level, and time delay circuit operates to isolate the voltage comparator and light-emitting indicator from temporary variations in fuel level produced by "fuel-slosh" in the fuel tank caused by variations in the motion or orientation of the motor vehicle...{read more to download full material}

0381]. DEVELOPMENT OF A LYSIMETER TO MEASURE THE EVAPOTRANSPIRATION OF A PLANT: Large weighable lysimeters allow a precise determination of the soil water balance and the quantification of both water exchange at the soil-atmosphere interface and the flux below the root zone toward the groundwater. If well embedded into an equally-vegetated environment, they reach a hitherto unprecedented accuracy in estimating precipitation (P) by rain, dew, fog, rime and snow, and evapotranspiration (ET). Lysimeters largely avoid errors made by traditional measurement systems, such as the wind error of Hellmann rain gauges, the island error of class-A pans, or errors from soil-water measurements that are subject to subsurface heterogeneity...{read more to download full material}

0382]. DESIGN AND CONSTRUCTION OF A MACHINE OVERHEAT DETECTION WITH ALERT: Malfunction or failure of mechanical, electrical and electro-mechanical equipment, for example equipment used in manufacturing operations, is often preceded by an increase in the operating temperature of at least some portion of the equipment. A temperature-sensitive, active material-containing actuator is pre-selected to operate at a pre-determined temperature indicative of impending equipment failure and placed in thermal contact with the equipment. If the equipment achieves the pre-selected temperature the actuator signals this by displaying a flag or providing some other passive visual indication...{read more to download full material}

0383]. DESIGN AND CONSTRUCTION OF A MAGNETIC PROXIMITY SWITCH: Magnetic proximity switches detect magnetic fields at greater distances of up to 60 mm, even through non-ferromagnetic materials like stainless steel. Depending on the permanent magnets used, different sensing distances can be implemented. The permanent magnet can be installed independent of polarity and with large tolerances, which allows many different installation options, even in cramped spaces. Precise switching is thus guaranteed even when used in dirty or damp environments. This means that applications in cranes or heavy vehicles are also easy to implement...{read more to download full material}

0384]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED WATER LEVEL CONTROLLER USING 89C52:The Water Level Controller System is an Electronic Equipment which when electrically connected to the starter of any given pump -set motor will control the operation of the pump- set depending upon the water level in the Source and Destination Storage Tanks. It Switches ON the Pump-set when Water level drops below pre-set level (i.e. T2 level) in Overhead Tank, Switches OFF the Pump-set when Water level in Overhead Tank becomes full (i.e. T1 level),Switches OFF the Pump-set when Water level is low in tank (i.e. S2 level), and Switches ON the Pump-set when there is sufficient water in the tank...{read more to download full material}

0385]. DESIGN AND CONSTRUCTION OF A 60A THREE PHASE AUTOMATIC CHANGEOVER SWITCH USING MICROCONTROLLER: This paper therefore presents the design and construction of microcontroller based programmable automatic power change over. The paper discusses the design, construction and operation of a program controlled power change over system that allows users to select the mode they would prefer to have their change over operate. Three modes were achieved, including auto mode, timed mode and manual mode, which were selected from push buttons. LCD interface was used for the output display. 8051 microcontroller was used to implement the control program while modular methodology was adopted...{read more to download full material}

0386]. DESIGN, CONSTRUCTION AND ANALYSIS OF A MICROCONTROLLER BASED DIGITAL AC/DC VOLTMETER: Microcontroller based digital voltmeter is an instrument used to measure the AC or DC voltage. The digital display is the main output which is used to indicate the numerical value of measurement. Since the display is digital, so there is no parallax reading error will be occurring. This meter is uses liquid crystal display (LCD) to display digital value because it has low power consumption, lower than light emitting diodes (LED)...{read more to download full material}

0387]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED SECURITY ACCESS CONTROL SYSTEM USING RFID: Access control is the process of verifying a user's claimed identity and giving or denying the access. The proposed project is a secure access control system to control the entry of various items through a door or a passage using RFID technology. At the very simplest level, Radio Frequency Identification (RFID) technologies allow the transmission of a unique serial number wirelessly, using radio waves. The two key parts of the system that are needed to do this are the RFID 'tag' and the 'reader'; attaching an RFID tag to a physical object allows the object to be 'seen' and monitored by existing computer networks....{read more to download full material}

0388]. DESIGN AND CONSTRUCTION OF A 6V RECHARGEABLE LANTERN: Since the invention of electricity by Michael faraday, Man has been so used to electricity that he cannot do without it. The absence of electricity causes a lot of sadness in our daily lives. Due to this reason I decided to work on a by rechargeable lamp as my project...{read more to download full material}

0389]. DEVELOPMENT OF A MICRO HYDROPOWER SYSTEM  DRIVEN BY RAIN WATER: Hydropower plants are actually based on a rather simple concept -- water flowing through a dam turns a turbine, which turns a generator. Dam , Intake , Turbine , Generators , Transformer , Power lines, Outflow are the basic parts of any hydro power plant. A micro hydro power (MHP) system is a type of hydro electric power scheme that produces up to 100 KW of electricity using a flowing steam or a water flow. The electricity from such systems is used to power up isolated homes or communities and is sometimes connected to the public grid...{read more to download full material}

0390]. DESIGN AND CONSTRUCTION OF AN LCD BASED DIGITAL ALARM CLOCK USING 8051 MICROCONTROLLER (AT89C51): Alarm clock is a clock that indicates a pre-set time by producing sound at that time. This functionality of digital clock is used to awaken people or remind them of something. This circuit is an extension to the digital clock with time setting option.  Here an extra switch is provided to set the alarm. While the alarm is set, the clock time does not stop and runs in the background. The circuit is build around 8051 microcontroller (AT89C51) and uses LCD to display time...{read more to download full material}

0391]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED CODE LOCKING SYSTEM WITH ALARM: This work is onMicrocontroller Based Code Locking System with Alarm The need for strict security measures has been necessary since the beginning of time. Access to certain places and items need strict restrictions to only the privileged few. This restricted zone can vary from strong holds and safes in financial institutions to doors leading to restricted areas. The various innovations in security access system include; code based lock, keycard lock, thumb print scan, retina scan. They come in handy in security systems...{read more to download full material}

0392]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED FAN SPEED CONTROLLER ACCORDING TO ROOM TEMPERATURE:This work is on microcontroller based fan speed controller- according to room temperature. Temperature controller is done using Microcontroller for temperature controlling. In this project, microcontroller 89s51 forms the processing part, which firstly receives data from ADC. ADC receives data from temperature sensor through amplifier. Then microcontroller 89s51 performs the comparison of current temperature and set temperature as per the logic of program for which microcontroller has already been programmed. The result obtained from the above operation is given through output port of 89s51 to LCD display of relevant data and generated pulses as per the logic program which is further fed to the driver circuit to obtain the desired output of ceiling fan...{read more to download full material}

0393]. DESIGN AND CONTRUCTION OF A TEMPERATURE CONTROLLED FAN SPEED: The temperature-controlled fan designed with microcontroller is quite useful for conference halls, auditoriums, cinema halls, and other commercial organizations where many people gathered together, and lot of fans are required at these places. Depending up on the weather condition, organizers of the above places are supposed to be control each and every fan, otherwise lot of energy will be wasted. Controlling each and every fan manually is highly impossible; there by this project work is taken up, which controls the fan automatically depending upon the temperature. ...{read more to download full material}

0394]. DESISN AND CONSTRUCTION OF A MICROCONTROLLER BASED TEMPERATURE CONTROL OVEN WITH DIGITAL DISPLAY: The design and construction of microcontroller based electric oven and cooker with time and temperature control is presented in this project. The project is built around an Atmel 89C52 micro controller which is programmed to carry out some user defined function. The project is design to meet the safety requirement that is lacking in many similar systems in the market and also make it operation as easy to operate as possible. The microcontroller unit was interfaced with some other components to achieve the set objectives. A temperature sensor senses the temperature of the oven units which is in analogue form and fed the output voltage to the input of the analogue to digital converter (ADC) which convert the analogue signal to a digital equivalent signal. The microcontroller performs the mathematics and display the result appropriately on the display unit...{read more to download full material}

0395].DESIGN AND CONSTRUCTION OF MICROCONTROLLER BASED PC PROJECT-OPENING FILES ON PC USING REMOTE:With advancement of technology things are becoming simpler and easier for us. Automatic systems are being preferred over manual system. This unit talks about the basic definitions needed to understand the Project better and further defines the technical criteria to be implemented as a part of this project. This project work is on controlling a desktop computer with a remote control. The functions of a computer like opening and closing folders, opening media player and doing its operations, etc can be done from a distance. It requires a few hardware components to build. The project is to be interfaced with the desktop computer through the computer’s keyboard port....{read more to download full material}

0396]. DESIGN AND CONSTRUCTION OF 8051 MICRO-CONTROLLER BASED ROBOTIC CAR: Robotic Car is a miniature prototype car powered by batteries whose various movements can be control either manually or automatically, or the combination of both.  In this system, the command is given through keyboard; it would have been better if we used IR remote control or something of that kind rather than using keyboard for commanding. However, by realizing the complexities we have made simple using keyboard...{read more to download full material}

0397].DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED STEPPER MOTOR DRIVE: Microcontroller based steppers drivers can achieve very high rotation speeds in stepper motors. Using a microcontroller, it is possible to have extreme control over exactly how each individual coil is energized inside the motor. This is absolutely necessary to obtain high speeds because as speed increases, timing of the coils firing must be perfectly in sync...{read more to download full material}

0398]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED WINDING MACHINE:In this project “microcontroller based automatic coil winding machine" main objective is to bring out a machine which can implement the idea of automation in Transformer winding or any type of coil windings. The proposed system controls the speed of a winding machine in order to obtain the optimum stop point in terms of security and fast production. The system is based on a microcontroller and an extremely simple hardware. The system has been tested for two years and results evince a very good mean time between failures...{read more to download full material}

0399]. MICROPROCEESOR TRAINING MUDULE SUBSECTION USING SEVEN SEGMENT DISPLAY: The teaching philosophy and the equipment developed for a course in microprocessor applications programming techniques suitable for retraining engineers in the potential uses of microprocessors is presented. A brief explanation of the application modules designed for the course is given and a detailed description of a typical application assignment is presented. Microprocessor training modules is a tool to allow Students and developers to program PIC Micro-controllers.  It is a powerful and flexible system that provides a user friendly environment to carry out a large variety of programming application tasks...{read more to download full material}

0400]. DESIGN AND CONSTRUCTION OF AN FM RECEIVER: Radio receiver design includes the electronic design of different components of a radio receiver which processes the radio frequency signal from an antenna in order to produce usable information such as audio. This project only concentrates on fm receiver design. The complexity of a modern receiver and the possible range of circuitry and methods employed are more generally covered in electronics and communications engineering. The term fm receiver is understood in this project to mean any device which is intended to receive a radio signal in order to generate useful information from the signal. This F.M. receiver is designed using single IC used to receive frequency range of 88 MHz to 108 MHz in F.M. band,  it is built around IC TEA5591...{read more to download full material}

 

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