0609]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC OFFICE SOLAR LIGHT USING PIR SENSOR: This device will automatically turns on the lights and the light remain ON when a person enters into a office and in the office, and turns off the lights when the person leaves the office. The PIR (Passive InfraRed sensor) detects the motion of person and gives short duration pulse output with the help of this sensor we can make the office light as Automatic one. The PIR sensor HC-SR501 is easy to use and comes with three standard pins (Vcc, out, Gnd) and also it has onboard sensitivity adjust and Time delay adjust, hence we can get desired output from PIR sensor....{read more to download full material}

0610]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER WITH BATTERY FULL CUT-OFF: This project is on an 12 volts automatic battery charger with battery full cut-off 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...{read more to download full material}

0611]. DESIGN AND CONSTRUCTION OF NOISE DETECTOR IN LIBRARY: This project is titled design and construction of a noise detector in library. Noise detector in library is an electrical device that turns ON an alarm whenever noise is detected. The most important feature of the noise detector in library is its small microphone. The microphone detects sound, such as laughs, slamming doors, and claps of hands. The sound is changed into electrical waves. The electrical waves are magnified by a transistor. The transistor feeds the amplified sound to a flip-flop circuit. The flip-flop reverses the output and feeds another amplified circuit. The amplified circuit is connected to a buzzer which blows alarm...{read more to download full material}

0612]. ENCRYPTION AND DECRYPTION: LAN encryption is used to secure your wireless network with an authentication protocol that requires a password or network key when a user or device tries to connect. If your wireless network is not secured with some type of encryption, unauthorized users could access your network and obtain personal information or use your Internet connection for malicious or...{read more to download full material}

0613]. 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 ...{read more to download full material}

0614]. VEHICLE SPEED ALARM SYSTEM USING IR SENSOR AND ARDUINO: The main aim of this work is to build a speed detection system for vehicle on the highway road. An accident occurs due to rash driving on highways is on the rise and people are losing their lives because of others mistakes. It is necessary to solve these kinds of problems through electronics circuit. This work describes the over speed for vehicles ...read and download

0615]. DESIGN AND CONSTRUCTION OF A TWO FEET ELECTRONICS FLORESCENT LAMP:A fluorescent lamp is a low pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the bulb to glow. A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps. The luminous efficacy of a fluorescent light bulb can exceed 100 lumens per watt, several times the efficacy of an incandescent bulb with comparable light output...{read more to download full material}

0616]. DESIGN AND CONSTRUCTION OF A MAINS 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...{read more to download full material}

0617]. THE DESIGN AND CONSTRUCTION A THREE PHASE AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of a three phase Voltage Stabilizer. It is designed to meet up with the AC voltage safety, stability and accuracy demand in industries and in homes. Three phase automatic Voltage stabilizers are useful in devices or load that have three phase 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, three...{read more to download full material}

0618]. DEVELOPMENT OF A SECURITY FRAMEWORK FOR PERSONAL INFORMATION MANAGEMENT: Security of life and property is an essential need of an individual as well as a generate body. This calls for the need for a well-organized information security system. Before the advent of computers, there was no security of vital information’s, files where pulled out from  cabinets from sections, which might result to misplacement of individual files, and documents as a result this project was implemented...{read more to download full material}

0619]. EFFECTS OF AMOUNT AND WAVELENGTH OF LIGHT ON A SOLAR CELL:Solar cells, also called photovoltaic or PV cells, change sunlight directly to electricity. When sunlight strikes the solar cell, electrons are knocked loose. They move toward the treated front surface. Solar cells generate an electrical current when light hits their surface. White light that we see from the Sun includes all colors of the visible spectrum and ranges in wavelength from about 400 nanometers ...{read more to download full material}

0620]. DESIGN AND IMPLIMENTATION OF SOLAR/PC POWERED APPLIANCES: This paper proposes the design and construction of fire alarm system which is controlled by microcontroller. Computer is used to indicate situations of the system composed of 4 modes of working state, regular working mode, short circuit mode, open circuit of wiring signal mode, and fire mode. Graphic output states are displayed on personal computer, PC, by using software delphi, interfacing with microcontroller...{read more to download full material}

0621]. 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 ...{read more to download full material}

0622]. DESIGN AND CONSTRUCTION A MINI SOLAR HOME  LANTERN USING LED: Nowadays, because of low energy or power consumption, low heat emission, low cost, the portability, wider application, energy saving bulb are highly used than florescent lamp which is powered and recharged using solar system. Solar home  lamp also known as solar light or solar lantern, is a lighting system composed of an LED lamp, solar panels, battery, charge controller and there may also be an inverter...{read more to download full material}

0623]. DESIGN AND CONSTRUCTION OF AN AUDIO VISUAL TIMER: Wait Timer is a visual and audio tool to help teach good waiting behavior. An audio/visual timer that can be set to different times. Now, imagine, without your projector, projection screen none of this would be possible and you will be reduced to giving a monologue, which can often get people to doze off. Similarly, good speakers and microphones are critical for seminars and conferences where participants run in to hundreds. It is beyond doubt that without the help of audio visual equipments, it will be impossible for you to make a good presentation that will help you to get noticed in short time....{read more to download full material}

0624]. DESIGN AND CONSTRUCTION OF A DISTANCE METER USING ULTRASONIC SENSOR AND 8051 MICROCONTROLLER: An ultrasonic sensor to detect the distance measurement system is introduced in the paper. The paper presents the working principle of ultrasonic distance measurement, the structure properties of ultrasonic sensors, the ultrasonic sensors in the transmitter and receiver probe and their inter-action problem in details. Ultrasonic sensor is a component of detecting the distance. 8051 microcontroller is the control component. The system mainly consists of five parts, such as the smallest single chip system, the ultrasonic transmission circuit, the ultrasonic receiving circuit, the digital display circuit and the alarm circuit...{read more to download full material}

0625]. DESIGN AND CONTRUCTION OF AN OBJECT DECTECTION SYSTEM USING ULTRASONIC SENSOR: Object detection technology has matured to a point at which exciting applications are becoming possible. Indeed, industry has created a variety of computer vision products and services from the traditional area of machine inspection to more recent applications such as video surveillance, or face recognition. In this chapter, several representatives from industry present their views on the use of computer vision in industry. Current research conducted in industry is summarized and prospects for future applications and developments in industry are discussed. The project is designed to demonstrate detection of any object ahead of the ultrasonic transducer. It can be used for applications like security area monitoring and wild life photography...{read more to download full material}

0626]. DESIGN AND CONSTRUCTION OF A PATIENT MEDICATION REMINDER: We are all so busy with our daily lives that we forget to take our medicines on time, which can have several ill effects on our health. The circuit described here helps in making a simple reminder that allows you to set an alert for the medicines that you need to take. The device flashes an LED or rings a buzzer at the selected time intervals. The available time intervals are matched with standard dosing times such as 4, 6, 8, 12, 24 and 48 hours for your convenience...{read more to download full material}

0627]. DESIGN AND CONSTRUCTION OF AN ANTI-PICKPOCKET ALARM: This is a security device for alerting an individual that their wallet or the like device has been stolen from their person includes a housing containing an alarm concealed within the wallet and tethered to the individual or another article being carried. The wallet alarm sounds when the wallet is removed far enough to tighten and disconnect the tether from the wallet. This action activates the alarm...{read more to download full material}

0628]. DESIGN AND FABRICATION OF A ROAD MARKING MACHINE: This  project is based on a fully mechanized process where we have designed and fabricated a simple mechanism of road marking machine which sprays the paint on application of force. Here we use a mild steel frame which supports the whole arrangement. The clutch lever arrangement is provided for initiating the spring action and thus the spray of paint is actuated. In the ordinary conventional...{read more to download full material}

0629]. DESIGN AND CONSTRUCTION OF A TIME PROGRAMMED SUN TRACKING SOLAR PANEL: Solar energy is one of the well-known sources of renewable energy. You will find many recent researches conducted with an objective to enhance the efficiency of solar panels (also known as Photo Voltaic systems). One of the ways to attain this objective is solar tracking system. Our project also suggests the same solution but it deals with the solar tracking system which is RTC based. Solar tracking system has always proved to be an effective way to generate more energy because it helps the solar panel remain exactly in front of the solar rays. The concept behind these...{read more to download full material}

0630]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC CAR PARKING SLOT INDICATOR USING MICROCONTROLLER:System demonstrates a fully automated car parking system. For this purpose we use IR sensors along with motors, LCD display and microcontroller for controlling the system ...{read more to download full material}

0631].DESIGN AND CONSTRUCTION OF TEMPERATURE CONTROL LOAD: This project is titled design and construction of a temperature control load. 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...{read more to download full material}

0632].DESIGN AND IMPLIMENTATION OF A WIRELESS AUDIO TRANSMITTER: This work is on wireless audio transmitter is a device for transmitting domestic audio signals wirelessly from one location to another. It is most commonly used for sending the audio 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 download full material}

0633].DESIGN AND CONSTRUCTION OF AN AUTOMATIC POWER SUPPLY CONTROL FROM 4 DIFFERENT SOURCES USING PIC MICROCONTROLLER: The main purpose of this project is to provide continuous power supply to a load, by selecting the supply from any of the four sources namely solar, inverter, main and generator automatically in case if one the source is absent...{read more to download full material}

0634].DESIGN AND CONSTRUCTION OF A 200A AUTOMATIC BATTERY CHARGER USING LCD: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...{read more to download full material}

0635]. DESIGN AND CONSTRUCTION OF A 12VDC RECHARGEABLE BATTERY CHARGER: Rechargeable battery charger comprises of a rechargeable battery in a special case with a special circuit to control power flow. They allow you to store electrical energy (deposit it in the battery) and then later use it to charge up other batteries...{read more to download full material}

0636]. DESIGN AND CONSTRUCTION OF A DARK ACTIVATED STREET LIGHT: This project work is on the construction of dark activated street lighting system. Which aimed at activating a switch or AC lamp at sunset and deactivate it at sunrise. This Dark activated street light can trigger a relay to operate an AC street light at Sunset. The lamp remains on till morning and then turns off. This eliminates the need of switching the Porch lamp daily and also helps to light the road/street. 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 download full material}

0637]. DESIGN AND CONSTRUCTION OF A 2KM TRANSMITTER FOR YAGI ANTENNA: 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 download full material}

0638]. RENEWABLE ENERGY – A VARIABLE ALTERNATIVE MEANS TO STABLE ELECTRICITY IN NIGERIA:Years from now, with the estimated growth in world population and economic activities, fossil fuels which currently generate more than half of the world’s energy needs would not be able to keep up with this pace because it is a non-renewable source of energy, in other words exhaustible...{read more to download full material}

0639]. DESIGN AND CONSTRUCTION OF A WIRELESS AC POWER TRANSFER USING HIGH FREQUENCY RESONATING INDUCTOR: 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. An AC Wireless power transfer 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 run the devices...{read more to download full material}

0640]. DESIGN AND CONSTRUCTION OF A SOLAR POWERED REFRIGERATOR SYSTEM: This paper presents the design of a solar powered refrigeration system. The design of the system takes into account the solar sorption principles which include both the absorption and adsorption. Research has been conducted and it has been proven that the design and implementation of solar refrigeration system comes with several advantages ...read and download

0641]. DESIGN AND CONSTRUCTION OF A WIRELESS PUBLIC ADDRESS SYSTEM: This work is on a wireless public addressing 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...{read more to download full material}

0642]. 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 download full material}

0643]. DESIGN AND CONSTRUCTION OF A 100W ELEMENT OF COOKING AND  BAKING MACHINE: This work is on electric powered cooking device for heating and baking of food. The construction of this work is based heating element, which generates and dissipates heat within the enclosure. The element is connected to a thermostat that regulates the rate of heat generation in the system. 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 download full material}

0644]. DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTOMATIC BATTERY CHARGER WITH BATTERY FULL CUT-OFF: This project is on an 12 volts automatic battery charger with battery full cut-off 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...{read more to download full material}

0645]. THE DESIGN AND CONSTRUCTION A 5KVA AUTOMATIC VOLTAGE STABILIZER: Voltage Stabilizer 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...{read more to download full material}

0646]. DESIGN AND CONSTRUCTION OF AN SCR AND TRIAC TESTER: The tester operates to identify the anode and cathode terminals of the conducting device, as well as to determine without destructive failure of the device under test whether the device is open, shorted or exhibiting leakage...{read more to download full material}

0647]. DESIGN AND CONSTRUCTION OF A 12V BATTERY CHARGER: A battery charger is an electrical device employed for charging batteries.  This batteries that are usually charged by battery charger are the storage batteries also known as “accumulator” the battery charger changes.  The alternating current from the power line into d.c suitable for charging. When the battery is fully charged, is up to it’s maximum, 13.6 volt, then the charger with automatically stop charging with the help of the contact relay, the transistor and the zener diode will bend the current back to the system...{read more to download full material}

0648]. DESIGN AND CONSTRUCTION OF A DC TO AC POWER INVERTER WITH BATTERY CHARGER: This project is on design and construction of a dc to ac power inverter incorporated with battery charger. An 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 download full material}

0649]. DESIGN AND CONSTRUCTION OF A 3.5KVA POWER INVERTERS: 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 230v, 50Hz AC...{read more to download full material}

0650]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC CHANGEOVER SWITCH (2): 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...{read more to download full material}

0651]. 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...{read more to download full material}

0652]. CONSTRUCTION PRINCIPLES AND OPERATION OF 1000W AC VOLTMETER: This work is on a digital A.C voltmeter is an instrument used for measuring the electrical potential difference between two points in an electric circuit. Digital ac voltmeter gives a numerical display of voltage, current or resistance by use of an analog to digital converter. Digital voltmeters can measure a range of alternating current (AC) voltages. Devices typically display between three and seven digits...{read more to download full material}

0653]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC WATER LEVEL REGULATOR: The filling of water tanks have been done through electrical pumps in the recent. However, untimely turning off the motor pumps lead to less filled tanks or over flown water from the tanks causing wastage. In order to avoid such situations we can have an electronic water level controller which can monitor the water level and switch the motor pump accordingly...{read more to download full material}

0654]. DESIGN AND CONSTRUCTION OF AN ACCESS CONTROLLED SYSTEM USING FINGERPRINT: Authentication plays a very critical role in security-related applications like e-commerce. There are a number of methods and techniques for accomplishing this key process. In this regard, biometrics is gaining increasing attention these days. Security systems, having realized the value of biometrics, use biometrics for two basic purposes: to verify or identify users. There is a number of biometrics and different applications need different biometrics...{read more to download full material}

0655]. DESIGN AND CONSTRUCTION OF A VOLTAGE MONITOR: Voltage monitor indicates the status of a device such as battery just by glowing LED’s. For example six LED’s are glowing means battery capacity 60% remains. This work explains you how a voltage monitor is designed. This device can be used  to check car battery or inverter. So by using this circuit, we can increase the lifetime of battery. The heart of this voltage monitor circuit is LM3914 IC...{read more to download full material}

0656]. DESIGN AND CONSTRUCTION OF A DIGITAL VOLTMETER USING PIC MICROCONTROLLER 16F877A AND SEVEN SEGMENTS DISPLAY (0-30V): This project work is on Digital Voltmeter Using PIC Microcontroller 16F877A. Voltmeters (voltage meter) a device used to measure voltage between given two terminals. Digital voltmeter gives a numerical display of voltage by use of an analog to digital converter...{read more to download full material}

0657].DESIGN AND CONSTRUCTION OF A DIGITAL TRAINERS SYSTEM: This work is on digital trainers system. The Digital Trainer is a general-purpose digital experiment board equipped with different built-in circuits as well as a standard PB-501 breadboard. There are: 8 Data Switches - The data switch circuits provides eight DATA OUTPUT pins D1 to D8 whose output level is adjusted using slide switches...{read more to download full material}

0658].DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED VOLTAGE MONITOR: Voltage monitor indicates the status of a device such as battery just by glowing seven segment displays. This work explains you how a voltage monitor is designed. This device can be used to check car battery or inverter. So by using this circuit, we can increase the lifetime of battery. MICROCHIP'S PIC16F676 is the heart and brain of this circuit. The internal ADC of the MCU with a resistor network voltage  divider is used to measure the input voltage. This device is designed to monitor 1.5V to 24V DC. The circuit will work even if the battery voltage is 3V....{read more to download full material}

0659].DESIGN AND CONSTRUCTION OF A DIGITAL THERMAL INCUBATOR: The purpose of this text is to present at a primary and intermediate level a comprehensive over view of the construction principle and indeed the operation of a Digital Incubator.  We want to present a situation where by as the temperature in going up let the resistance be decreasing and as the temperature decreases let the resistance be going up. Digital thermal incubator is therefore device designed to keep chicken and babies at a required temperature when they are delivered prematurely especially as it applies to babies...{read more to download full material}

0660]. DESIGN, CONSTRUCTION AND TESTING OF A DIGITAL VOLTMETER: This work is on a digital using ATMEGA8 microcontroller which is an instrument used for measuring the electrical potential difference between two points in an electric circuit. Digital voltmeter gives a numerical display of voltage, current or resistance by use of an analog to digital converter. Digital voltmeters can measure a range of alternating current (AC) voltages, direct current (DC) voltages, or both AC and DC voltages. Devices typically display between three and seven digits...{read more to download full material}

0661]. DESIGN AND CONSTRUCTION OF DOOR LOCKING SECURITY SYSTEM USING GSM: This project is on door locking security system using GSM. security door that can be remotely controlled by a GSM phone set acting as the transmitter and another GSM phone set with a dual tone multi-frequency (DTMF) connected to the door motor through a DTMF decoder interfaced with microcontroller unit and a stepper motor .The design is composed of four main functional modules, namely; the GSM module, the decoding module, controlling module and the switching module...{read more to download full material}

0662]. DESIGN AND INSTALLATION OF A FUELLESS POWER GENERATOR OF 5KVA CAPACITY IN THE POLYTECHNIC CONFERENCE HALL: This project is on "DESIGN AND INSTALLATION 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 authorityounding. This is a feature that makes it safe to use any where when compared to conventional generator...{read more to download full material}

0663]. DESIGN AND CONSTRUCTION OF A SWITCH MODE POWER SUPPLY: This work is on switched-mode power supply (SMPS) which is an electronic circuit that converts power using switching devices that are turned on and off at high frequencies, and storage components such as inductors or capacitors to supply power when the switching device is in its non-conduction state. The circuit was built around TNY267 switching regulator which performs the functions of the PWM generator, MOSFET chopper switch, error amp, and control circuit ...read and download

0664]. 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 download full material}

0665]. DETERMINATION OF SATELITE FREQUENCY FOR FREE-TO-AIR (FTA) STATIONS ON ALL SATELLITES WITH FOOT PRINT COVERING A PARTICULAR AREA ON THE KU-BAND: Satellite television is delivering television programming using signals relayed from space radio stations (e.g. DVB satellites). The signals are received via an outdoor parabolic reflector antenna usually referred to as a satellite dish and a low-noise block down converter (LNB). A satellite receiver then decodes the desired television programme for viewing on a television set. Receivers can be external set-top boxes, or a built-in television tuner. Satellite television provides a wide range of channels and services, especially to geographic areas without terrestrial television or cable television...{read more to download full material}

0666]. DESIGN AND CONSTRUCTION OF CONTROLLING OF INDUCTION MOTOR USING AUTO STAR/DELTA STATER: An induction motor is practically a constant speed motor, which means, for the entire loading range, change in speed of the motor is quite small. Speed of a DC shunt motor can be varied very easily with good efficiency, but in case of Induction motors, speed reduction is accompanied by a corresponding loss of efficiency and poor power factor. As induction motors are widely being used, their speed control may be required...{read more to download full material}

0667]. DETERMINATION OF FOCAL LENGTH OF A LENS USING OPTICAL BENCH: The focal length of an optical system is a measure of how strongly the system converges or diverges light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus. A system with a shorter focal length has greater optical power than one with a long focal length; that is, it bends the rays more sharply, bringing them to a focus in a short...{read more to download full material}

0668]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC CHANGEOVER SWITCH WITH LDR SENSING AND SWITCHING: This project work is on the design and construction of automatic changeover switch using LDR. It provides a means of switching from phase of AC mains to generator if there is failure in the AC mains. The circuit uses a Light Dependent Resistor (LDR) to sense the light and switches from generator to mains AC. This system automatically switches ON when the night falls and turns OFF when the sun rises...{read more to download full material}

0669]. DESIGN AND CONSTRUCTION OF A CHRISTMAS LIGHT: Christmas lights are lights used for decoration around Christmas. The custom goes back to the use of candles to decorate the Christmas tree in upper-class homes in 18th-century Germany. Christmas trees displayed publicly and illuminated with electric lights became popular in the early 20th century. It is design with White, Blue and Red LEDs which flash at different rates to give a colorful display. It is a light sensitive circuit so that it will turn on in the evening automatically and stays on till morning. The circuit uses the popular...{read more to download full material}

0670]. SOLAR OUTDOOR SURVEILLANCE CCTV CAMERA: The implementation and use of an outdoors solar powered surveillance (Closed Circuit Television technology) in societies across the globe has become a standard and reliable way of securing out environment ...read and download

0671]. DESIGN AND CONSTRUCTION OF A TRAVELATOR: Travelator is a slow moving conveyor mechanism that transports people across a horizontal or inclined plane over a short to medium distance. They are often installed in pairs, one for each direction. Travelator is used in airports and department stores to move people from one floor to another. Inclined travelator is often have special shopping carts equipped with a brake that engages wheel magnets to keep the cart in place on smooth...{read more to download full material}

0672]. DESIGN AND CONSTRUCTION OF A TRANSISTOR ANALYZER: This work is on transistor analyzer. The proposed circuit not only indicates the type of transistor(NPN/PNP) but also indicates the terminals(emitter, base and collector)using simple dual LEDs. Color diagrams of testing procedure have been given for easy following...{read more to download full material}

0673].DESIGN AND CONSTRUCTION OF AUTOMATIC REMOTE CONTROLLED ENERGY SAVING RECHARGEABLE LAMP: This project deals with the design and construction of an Automatic Remote Controlled Energy Saving Rechargeable Lamp. It is aimed at overcoming darkness due to instant blackout. This project becomes active anytime there is a power failure from the local supply. The project consists of three major units, which are: The power supply unit, charging unit and the infrared unit. This project is carried out using commonly available component and the result obtained was satisfactory...{read more to download full material}

0674]. DESIGN AND CONSTRUCTION OF AN 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...{read more to download full material}

0675]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC SECURITY LIGHTING SYSTEM: Automatic security lighting system is any electrical security lighting that is fixed outside house for the illumination of such environment or a light is a raised source of light on the edge of a road or walkway, which is turned on or lit at a certain time every night. Automatic security light controller will automatically turn on security light in the way of LEDs or bulb coupled with relay. This system employed the output from an uncomplicated light/dark activated circuit and obliges a relay in its output which can be further attached to switch ON/OFF a street light and electrical application in a household also...{read more to download full material}

0676]. DESIGN AND CONSTRUCTION OF A THREE PHASE AUTOMATIC SELECTOR WITH CHANGEOVER: This project work is on the design and construction of automatic power 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 and also automatic power changeover from public utility supply to generator and vice versa was aimed at providing a useful system for use in our homes or offices. The system was achieved with an ac relays. 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 high current relay switches and it is powered by 220vac power supply...{read more to download full material}

0677]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC PLANT IRRIGATION SYSTEM: This work is on Automatic Plant Irrigation System useful in watering plants automatically without any human interference. We may call it as Automatic plant irrigation system. We know that people do not pour the water on to the plants in their gardens when they go to vacation or often forget to water plants. As a result, there is a chance to get the plants damaged. This project is an excellent solution for such kind of problems...{read more to download full material}

0678]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC SOIL MOISTURE SENSING AND WATERING SYSTEM: An automatic moisture sensing and watering system detects a moisture level within the soil. The automatic moisture sensing and watering system may be implemented in combination with a conventional automatic watering system to accurately control a moisture content of a plot of soil. Since a plant draws water directly from the soil, the automatic...{read more to download full material}

0679]. DESIGN AND CONSTRUCTION OF A THREE PHASE AUTOMATIC SELECTOR WITH GENERATING PLANT CHANGEOVER: This project work is on the design and construction of a three phase automatic selector with generating plant changeover . It provides a means of switching from one phase of AC mains to another in the case of failure in the existing phase or under-voltage, and also automatic power changeover from public utility supply to generator and vice versa was aimed at providing a useful system for use in our homes or offices. The system...{read more to download full material}

0680]. DESIGN AND CONSTRUCTION OF A NOTICE BOARD USING LED: This project work is on an electronic notice board using LED which is an electronic display used in advertising and distribution of information in public and private locations. The displays are seen mainly in many public places such as airports, train stations, and shopping malls. In this work, signs uses technology such as LED to display information and can be found in public spaces, transportation systems, museums, stadiums, retail stores, hotels, restaurants, and corporate buildings...{read more to download full material}

0681]. DESIGN AND CONSTRUCTION OF MINI MICROPHONE: A mini microphone is a tranducer that converts a sound wave into an electrical signal in which the voltage and current are proportional to the original sound. To perform this task microphones use a thin membrane, known as a diaphragm, which mimics the function of the human ear...{read more to download full material}

0682]. DESIGN AND CONSTRUCTION OF A SOLAR POWERED ILLUMINATION AND CHARGING SYSTEM IN AN OFFICE:Solar powered office illumination system also known as  office solar light or office solar lantern, is a lighting system composed of an LED lamp, solar panels, battery, charge controller and there may also be an inverter. The lamp operates on electricity from batteries, charged through the use of solar photovoltaic panel...{read more to download full material}

0683].DESIGN AND CONSTRUCTION OF A TWO-WAY WIRELESS AUDIO ALERT SMOKE DETECTOR: This project is titled design and construction of a two-way wireless audio alert smoke detector Two-Way Wireless Sound All Smoke Detector with the ability to activate the sounders in all enrolled smokes during fire accident. A wireless alarm system employs two-way...{read more to download full material}

0684]. DESIGN AND CONSTRUCTION OF AN ULTRASONIC LIGHTING SYSTEM: This work is on ultrasonic lighting system. This device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area via lighting. Ultrasonic lighting system forms 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 ultrasonic lighting system 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 download full material}

0685]. DESIGN AND CONSTRUCTION OF TWO MINUTES EMERGENCY KITCHEN LIGHTING SYSTEM: This work is on minutes emergency kitchen lighting system. Emergency light is used during the power failure to light up our kitchen especially when one is in kitchen. As it is used during the power failure, it should last long, hence generally bright white LEDs are used in emergency light, because they produce more light and consume less power. In this emergency light circuit, when the Power goes OFF, the emergency light activates automatically using LED as the lamp, and this LED stays ON for two minutes then goes OFF...{read more to download full material}

0686]. DESIGN AND CONSTRUCTION A SOLAR POWERED/ PC CONTROLLED LIGHTING SYSTEM: This project is on design and construction a solar powered/ pc controlled lighting system. As the name implies, this involves using solar energy to power electrical lighting and at the same time using pc to control the light. Any electrical lighting that is fixed in any environment or house is for the illumination of such environment or is an electrical device used to create artificial light by use of an electric lamp. The lights in your house illuminate a room so that you can see better, but they can...{read more to download full material}

0687]. DESIGN, CONSTRUCTION AND TESTING OF WHEELBARROW: This work is on a wheelbarrow. Wheelbarrow is a small hand-propelled vehicle, usually with just one wheel, designed to be pushed and guided by a single person using two handles to the rear. The wheelbarrow includes brackets which are fixedly positioned with respect to the wheelbarrow adjacent to the front end thereof. An axle is formed of a rod with external threads, the axle having a center and opposed ends. Brackets are secured to the front legs adjacent to their lower extents with apertures...{read more to download full material}

0688]. DESIGN AND CONSTRUCTION OF A TV AUDIO VIDEO TRANSMITTER: This TV transmitter transmits audio and video signal from Camcoder Camera, DVD, VHS, Satellite, video game, etc. Playing them in a channel free from the strip of VHF. These signal can be radiated with a common antenna and captured in an it distances of until about 500 meters that it is the most appropriate for urban areas, reminding that and necessary to be a lot of caution and careful for not interfering in frequencies of other issuing, as well as to emergency services. Depending on the local conditions (existence or not of obstacles). Fed with tensions from 12 to 15 Volts, the circuit has excellent I carry out so much in the emission of monochrome signal, as in colors. An important point of this project ‚the easiness with that he can be set up and adjusted, since only two coils are used. Ideal to be used with surveillance cameras turning the without thread...{read more to download full material}

0689]. DESIGN AND CONSTRUCTION OF A SOLAR RECHARGEABLE STANDING FAN: This work is on solar rechargeable standing fan. The project involves using solar energy to power standing fan. Rechargeable solar standing fan, charges with solar energy. Standing solar 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}

0690].WIFI CAMERA BASED INTELLIGENCE SECURITY DOOR SYSTEM: A smartphone has variety of uses and becomes one of the most important devices nowadays. This work describes the design and operation of an intelligence security door using smartphone through Wireless Fidelity (WiFi) technology ...read and download

0691]. DESIGN AND CONSTRUCTION OF A SOLAR POWER BANK: Solar Power Bank comprises of a Solar Photovoltaic Modules, Solar Power Conditioning Unit (special circuit to control power flow), battery Bank. They allow one to store electrical energy (deposit it in the bank by Solar Photovoltaic cell). Solar Photovoltaic cell which produces electricity only from solar panels and meets the load requirement and then later use it to charge up a mobile device...{read more to download full material}

0692]. DESIGN, CONSTRUCTION AND TESTING OF A WIND TURBINE POWER GENERATOR MODEL: Wind power is the conversion of wind energy into more useful forms, usually electricity using wind turbines. Wind power is generated in the form of electricity by converting the rotation of turbine blades into electrical current by means of an electrical generator. In windmills (a much older technology) wind energy is used to turn mechanical machinery to do physical work, like crushing grain or pumping water ...read and download

0693]. QUALITY ASSESSMENT AND GLYCEMIC INDICES OF BISCUITS PRODUCED FROM WHEAT (TRITICIUM AESTIVUM) AND WHOLE POTATOES FLOUR: Biscuits hold an important position in snack foods due to the variety in taste, crispiness and digestibility. Composite flours have better nutritional quality and would be highly desirable for the production of nutritious biscuit. A study was carried out to develop biscuits from the flour of sweet potato (Ipomoea batatas L.) and wheat (Triticum aestivum L.) and to evaluate the quality characteristics of the product ...read and download

0694]. DESIGN AND CONSTRUCTION OF A SOLAR LANTERN USING LED: Nowadays, because of low energy or power consumption, low heat emission, low cost, the portability, wider application, energy saving bulb are highly used than florescent lamp which is powered and recharged using solar system ...read and download

0695]. 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...{read more to download full material}

0696]. DESIGN AND CONSTRUCTION OF VOLTAGE INVERTER SYSTEM WITH TRICKLE CHARGING SYSTEM: Inverter is an uninterrupted power supply which conversed from D.C to AC voltage with the help of an oscillator. This inter section consist of two stages of switching circuits which comprises of a power transistor connected in the common emitter configuration. 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...{read more to download full material}

0697]. SMART CCTV SURVEILLANCE AND SECURITY SYSTEMS FOR COMPANIES AND HOUSEHOLDS: The implementation and use of surveillance (Closed Circuit Television technology) in societies across the globe has become a standard and reliable way of securing out environment. Smart surveillance CCTV camera network platform that can be used in a variety of outdoor applications including surveillance of public spaces, habitat and environmental monitoring, wildfire prevention and detection, to name a few ...read and download

0698]. DESIGN AND CONSTRUCTION OF A SMART  HOME SECURITY SYSTEM USING GSM MODULE: The guard is also susceptible to sleep at times. It was then that home security system based upon electronic circuits were developed which proved to be highly reliable and were appreciated by the people as they were relieved from constant monitoring of their homes ...read and download

0699]. DESIGN AND CONSTRUCTION OF AN INDUCTIVE COUPLING BATTERY CHARGING: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. Inductive 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 download full material}

0700]. DESIGN AND CONSTRUCTION OF A SOLAR POWERED BATTERY CHARGER WITH ANTI THEFT LASER SECURITY ALARM: This project is titled the design and construction of a solar charger with anti-theft laser security alarm. It is designed to meet up with the higher demand of power supply needed to keep our cell phone battery charged and secured ...read and download

0701]. DESIGN AND FABRICATION OF A PORTABLE MOBILE DRYER: In many countries of the world, the use of thermal systems in the agricultural area to conserve vegetables, fruits, coffee and other crops has shown to be practical, economical and the responsible approach environmentally.  Thermal heating systems to dry food and other crops can improve the quality of the product, while reducing wasted produce.  Under the module of Advance topics in mechanical engineering projects, we were assigned to design the low cost vegetable dryer. The design of portable mobile dryer consists of several...{read more to download full material}

0702]. DESIGN AND CONSTRUCTION OF A POWER INVERTERS (WITH 48V BATTERY AND 210VAC): This project is titled the design and construction of a 48 DC to 210 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 48v DC from battery and inverts it to an output of 210v, 50H2 AC. It makes no noise during operation and no hazardous carbon monoxide...{read more to download full material}

0703]. DESIGN AND CONSTRUCTION OF A 4KM FM/AM RADIO BAND TRANSMITTER: 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. The transmitter was designed using transistors and other component such resistor, inductor and capacitors...{read more to download full material}

0704]. DESIGN AND CONSTRUCTION OF A FIELD EFFECT TRANSISTOR AMPLIFIER: FET amplifier is an amplifier which uses one or more field-effect transistors (FETs). The main advantage of an FET used for amplification is that it has very high input impedance and low output impedance. FET Amplifier is designed to deliver appreciable 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. The power amplifier in a radio transmitter operates over a relatively narrow band of frequencies with the load essentially constant impedance...{read more to download full material}

0705]. DESIGN AND CONSTRUCTION OF A KEYPAD CONTROL FOR MULTIPLE APPLIANCES: Keypad control for multiple appliances is a device designed to on/off multiple appliances using a keypad. This circuit employs DTMF technique to switch on/off up to ten appliances. The controller uses telephone-type keypad with 12 press-to-on switches. These switches are arranged in four rows (R1 through R4) and three columns (C1 through C3) using seven lines that are terminated at corresponding inputs of DTMF encoder UM91214B (IC1). IC1 generates 12 distinct dual-tone signals corresponding to the switch pressed. This signal is routed to the receiver using a wired link.  (It can also be used for remote control using IR or FM.) The wired link unit can be operated off a 9V PP battery or using a suitable AC mains adaptor...{read more to download full material}

0706]. 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...{read more to download full material}

0707]. DESIGN AND CONSTRUCTION OF A 1KVA PURE SINEWAVE POWER INVERTER SYSTEM: 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 download full material}

0708]. DESIGN AND CONSTRUCTION OF A 2.2KVA THREE PHASE INDUCTION MOTOR: Three phase induction motors are employed in almost all the industries because of its simple construction and easy operation. Efficiency of the induction motor is affected by its fixed losses and variable losses which mainly depend on the input supply voltage and load current respectively. An attempt is made to minimize the iron losses by using the permanent magnet ferrite...{read more to download full material}

0709]. DESIGN AND CONSTRUCTION OF 2KVA TRANSFORMER WITH MULTIPLE INPUT TAPS AND 18V OUTPUT: This work is multiple primary winding and one single secondary winding transformer. But the beauty of transformers is that it allow us to use different voltages in the input taps of the transformer to give out one output as 18v. The principal of operation of this multiple winding transformer is no different from that of an ordinary transformer. Primary and secondary voltages, currents and turns ratios are all calculated the same, the difference this time is that we need to pay special attention to the voltage polarities of each coil winding, the dot convention marking the positive (or negative) polarity of the winding, when we connect them together...{read more to download full material}

0710]. DESIGN AND CONSTRUCTION OF A 35KVA POWER INVERTER INBUILT CHARGER, OVER AND UNDER VOLTAGE CONTROL, TEMPERATURE CONTROL, MICROCONTROLLER BASED AND DIGITAL DISPLAY: 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...{read more to download full material}

0711]. THE DESIGN AND CONSTRUCTION A 10KVA 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 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 90V and 240V...{read more to download full material}

07012]. DESIGN AND CONSTRUCTION OF A 5KVA TRANSFORMER WITH A VARIABLE OUTPUT VOLTAGE:Since the invention of the first constant potential transformer in 1885, transformers have become essential for the transmission, distribution, and utilization of alternating current electrical energy. A wide range of transformer designs are encountered in electronic and electric power applications which also include variable transformer. Variable transformer is transformer that can put out differing amounts of voltage from the same input voltage. Variable Transformers...{read more to download full material}

0713]. SINGLE LINE TO GROUND FAULT ANALYSIS IN 11KV DISTRIBUTION FEEDER (a case study of ado Ekiti electrical power distribution district): The aim of this research work is to carry out fault analysis of 11KV distribution power system. Electric power is an essential facilitator for sustainable development of the modern nation state. While Nigeria is reported to suffer from severe shortages of electric power the condition of some of its newer constitutional units are unknown...read and download

0714]. DESIGN AND CONSTRUCTION OF A 24V WIND TURBINE: 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. This work is based on the production of 24vdc using wind turbine...{read more to download full material}

0715]. DESIGN AND CONSTRUCTION OF A 12V AIR CONDITIONER USING PELLITER MODULE: This project demonstrates an environmental friendly methodology for construction an air conditioning system. In particular, the cooler does not deplete the earth's limited fossil fuel reserves nor does it harm the global environment either by depleting stratospheric ozone or by contributing to global warming through the emission of greenhouse gases. The electrical energy input needed to power the cooler is supplied 12v dc. The air-conditioning based on...{read more to download full material}

0716]. CONSTRUCTION OF 10KVA VARIABLE THREE PHASE STATIC COMPENSATOR FOR POWER QUALITY IMPROVEMENT: A Power quality problem is an occurrence manifested as a nonstandard voltage, current or frequency that results in a failure or a  mis-operation  of end  user  equipments.  Utility distribution networks, sensitive industrial  loads  and  critical commercial operations suffer from various types of outages and service interruptions which can cost significant financial losses. With the restructuring of power systems and with shifting trend towards distributed and dispersed generation, the issue of...{read more to download full material}

0717]. 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 download full material}

0718]. DESIGN AND CONSTRUCTION OF A 60W POWER AMPLIFIER: This work is titled the design and construction of 60W power amplifier. 60W 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. 60W power amplifier amplifies 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...{read more to download full material}

0719]. THE DESIGN AND CONSTRUCTION OF A 40 WATT HI-FI AMPLIFIER: This work is titled the design and construction of a 40 Watt Hi-Fi Amplifier. A 40 Watt Hi-Fi 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. A 40 Watt Hi-Fi 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...{read more to download full material}

0720]. THE DESIGN AND CONSTRUCTION A 5KVA AUTOMATIC VOLTAGE STABILIZER: The Automatic voltage regulator is a voltage regulator planned to mechanically sustain a constant voltage level. It is very device to maintain a constant voltage level. It can also use electromechanical components. It can be used majorly to regulate one or more DC or AC depending on the design. Therefore, the functions of this equipment are very wide and can be used majorly for various purposes. Electronic voltage regulators can be used majorly for various purposes. It has various functions like it can be used mainly for stabilizing the DC voltages that can be used by the processor and its main parts. In central power station generator plants and automobile alternators, voltage regulators control the output of the plant. In this distribution system, it may be installed at along distribution lines so that all clients recognize steady voltage self-regulating of how much power is drawn from the line. There are many functions of operating the AC depending upon the design...{read more to download full material}

0721]. DESIGN AND CONSTRUCTION A 2KVA AUTOMATIC VOLTAGE STABILIZER: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 download full material}

0722]. DESIGN AND CONSTRUCTION A 100KVA AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of a 100KVA 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...{read more to download full material}

0723]. DESIGN AND CONSTRUCTION OF 5KVA DISTRIBUTION TRANSFORMER OF 240/110V, 24V, 12V: This project work is titled design and construction of 5kva distribution transformer of 240/110v, 24v, 12v. A distribution transformer is a transformer that provides the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customer.If mounted on a utility pole, they are called...{read more to download full material}

0724]. DESIGN AND CONSTRUCTION OF A 500VA INVERTER: 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...{read more to download full material}

0725]. DESIGN AND CONSTRUCTION OF A 500W UNINTERRUPTIBLE POWER SUPPLY: The purpose of this project is to design and construct a 500w 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...{read more to download full material}

0726]. DESIGN AND CONSTRUCTION OF A 500W WIRELESS PUBLIC ADDRESS SYSTEM (PA SYSTEM): 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...{read more to download full material}

0727]. DESIGN AND CONSTRUCTION OF A 1000W LOUDSPEAKER: This work is on design and construction of a 1000w loudspeaker. A loudspeaker is an electro-acoustic transducer; a device which converts an electrical audio signal into a corresponding sound. Loudspeaker consisting of an enclosure including one or more drivers. To adequately reproduce a wide range of frequencies, most loudspeaker systems employ more than one driver, particularly for higher sound pressure level or maximum accuracy. When multiple drivers are used in a system, a "filter network", called a crossover, separates the incoming signal into different frequency ranges and routes them to the appropriate driver...{read more to download full material}

0728]. DESIGN AND CONSTRUCTION OF A 2.4KVA POWER INVERTERS: This project is titled the design and construction of a 2.4KVA 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 230v, 50Hz AC. It makes no noise during operation and no hazardous carbon monoxide is generated in the surrounding...{read more to download full material}

0729]. DESIGN AND CONSTRUCTION OF A 2.5 KVA POWER INVERTERS: This device 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 230v, 50Hz AC...{read more to download full material}

0730]. DESIGN AND CONSTRUCTION OF MOBILE 1KVA RECHARGEABLE POWER SUPPLY: Electricity is the principal force that powers modern society. It lights buildings and streets, runs computers and telephones, drives trains and subways and operates all variety of motors and machines ...read and download

0731]. DESIGN AND CONSTRUCTION OF A 12V SOLAR LANTERN USING LED: Nowadays, because of low energy or power consumption, low heat emission, low cost, the portability, wider application, energy saving bulb are highly used than florescent lamp which is powered and recharged using solar system. Solar lamp also known as solar light or solar lantern, is a lighting system composed of an LED lamp, solar panels, battery, charge controller and there may also be an inverter...{read more to download full material}

0732]. DESIGN AND CONSTRUCTION OF 8051 BASED TEMPERATURE CONTROLLED AUTOMATIC AIR CONDITIONING SYSTEM: Temperature Controlled Automatic Air Conditioning System, As the name implies the main purpose of this project is to design a system whose sole purpose is to condition or maintain the temperature within the predefined limits. Thus, this system proves to be useful to be used as a Air Conditioning System inside room, offices, departmental stores etc. Apart from that, it can also be used in various...{read more to download full material}

0733]. DESIGN AND CONSTRUCTION OF A 5KVA ELECTRIC A.C ARC WELDING MACHINE: This project is titled the designing and construction of A 5KVA electric A.C arc welding machine. Electric Arc Welding Machine of 220/240 Volts and output voltage of 100volts. A core type step-down transformer and choke are essential as the voltage or the arc is usually between 50 and 100volts. The choke is necessary to displace the phase relationship of the voltage and current so that the heat of the arc may be maintained by ensuring that zero points of current and voltage are as far apart as possible...{read more to download full material}

0734]. DESIGN AND CONSTRUCTION OF A 1000W POWER AMPLIFIER: This work is titled the design and construction of 1000w power amplifier. A 1000W 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. Power amplifier amplifies low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz...{read more to download full material}

0735]. CONSTRUCTION OF A 3000mAh  RECHARGEABLE POWER BANK: power bank includes a main body having a circuit board and a battery arranged therein. The circuit board includes a first control unit, a second control unit connected to the first control unit. The first control unit controls an input voltage of an external power supply and an output voltage of a battery power of the battery, and informs the second control unit to turn on. 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 download full material}

0736]. 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}

0737]. DESIGN AND CONSTRUCTION OF A 500W POWER AMPLIFIER: This work is titled the design and construction of 500W power amplifier. A 500W 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. Power amplifier amplifies low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz...{read more to download full material}

0738]. DESIGN AND CONSTRUCTION OF A 5KVA POWER INVERTER: This project is titled the design and construction of a 5kva 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 230v, 50Hz AC...{read more to download full material}

0739]. DESIGN AND CONTRUCTION OF A 3-PHASE IRRIGATION WATER PUMP CONTROLLER FOR ILLITERATES USING DUAL GSM MODEMS: This project aims in providing a user friendly, reliable and automated 3- phase water pump control system for illiterates. Now a day’s...{read more to download full material}

0741]. THE DESIGN AND CONSTRUCTION A 20KVA AUTOMATIC VOLTAGE STABILIZER: This project is titled the design and construction of a 20KVA 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...{read more to download full material}

0742]. DESIGN AND CONSTRUCTION OF A 2 KVA SOLAR INVERTER: This work is on design and construction of a 2KVA 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...{read more to download full material}

0743]. DESIGN AND CONSTRUCTION OF 25 AMPS SINGLE PHASE AUTOMATIC CHANGEOVER: 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...{read more to download full material}

0745]. 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...{read more to download full material}

0746]. DESIGN AND CONSTRUCTION OF AN ANALOGUE CAPACITANCE METER: There has always been a problem identifying capacitors, due to the enormous variety in size, shape and coding. Most of the time it is impossible to identify them by size due to the different forms of construction. So you have to be able to read and interpret the codes on the body. But if the numbers are missing or microscopic in size, you have a problem...{read more to download full material}

0747]. ANALYSIS OF POWER SYSTEMS UNDER FAULT CONDITIONS WITH MATLAB SIMULATION: The analysis of Power Systems under fault condition represents one of the most important and complex task in Power Engineering. The studies and detection of these faults is necessary to ensure that the reliability and stability of the power system do not suffer a decrement as a result of a critical event such a fault. This project will conduct a research, analyze the behavior of a system under fault conditions and evaluate different scenarios of faults...{read more to download full material}

0748]. ANALYSIS OF CONTROLLING INDUCTION MOTOR USING STAR –DELTA: This work is on analysis of controlling induction motor using star and delta connection, which is the reduced voltage starting method on motor. Voltage reduction during star-delta starting is achieved by physically reconfiguring the motor windings. During starting the motor windings are connected in star configuration and this reduces the voltage across each winding. This also reduces the torque by a factor of three. After a period of time the winding are reconfigured as delta and the motor runs. Star/Delta motor are probably the most common reduced voltage of the motor. They are used in an attempt to reduce the start current applied to the motor during start as a means of reducing the disturbances and interference on the electrical supply. The Star/Delta (or Wye/Delta) starter is one of the lowest cost electromechanical reduced voltage starters that can be using to control induction motor...{read more to download full material}

0749]. DESIGN AND CONSTRUCTION OF A TV, AM AND FM ANTENNA BOOSTER: While TV and radio signal passes through the air with minimal trouble, every object it meets between the tower and your mobile device causes some degree of interference. Geographical elements, such as hills, mountains, and trees can cause major signal issues, as well as building materials, like metal siding, concrete, and wire mesh. Additionally, the increased use of energy efficient products, such as radiant barriers and window tinting, have contributed to the degree of TV and radio (AM and FM) reception problems in new homes. While either one of these factors are enough to cause dropped calls and poor reception, the combination of the two all but guarantees problems. Booster is designed to deal with both of these factors...{read more to download full material}

0750]. A PRACTICAL STUDY ON PROCEDURE TECHNIQUES ON MAJOR ASSEMBLING OF COMPUTER DEVICE (CASE STUDY INTERNAL COMPONENT OF A COMPUTER DEVICE): This project work is a practical study on procedure techniques on major assembling of computing device. 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...{read more to download full material}

0751]. 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 download full material}

0752]. DESIGN AND CONSTRUCTION OF A PASSIVE INFRARED (PIR) BASED AUTOMATIC DOOR SYSTEM: The project is designed for automatic door opening and closing system using PIR 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 sensing any body movement near the door. This is achieved with help of a PIR (Passive Infrared) sensor...{read more to download full material}

0753]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC BRAKE FAILURE INDICATOR: Brake failure indicator with Alarm System Synopsis Now a day, Machines are widely controlled by control system. To meet the need of exploding population economic and effective control of machines is necessary. The main theme of our project is to monitor the brake system at every moment Today accidents are occur due to lot of reasons , the one of the main reason is brake failure, it caused to due to...{read more to download full material}

0754]. DESIGN AND CONSTRUCTION OF AN AUTOMATED PROJECT TRACKING INFORMATION SYSTEM FOR IMO STATE GOVERNMENNT: We all are aware of errors and losses of funds and man-power arising from non-continuity of project ranging from one administration to another. This primarily comes or results from the deficiency associated with manual storage and processing of project information in project tracking information in the state, therefore this computer base project tracking information system ...{read more to download full material}

0755]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED SCR/TRIAC TESTER: A tester is provided in which a test signal having a selected polarity and magnitude is applied across the main electrodes of a device under test. In the case of an SCR and TRIAC device under test, for example, pulses of a predetermined energy level and polarity are applied to the gate electrode to trigger the SCR or TRIAC into conduction. The tester operates to identify the anode and cathode terminals of the conducting device, as well as to determine without destructive failure of the device under test whether the device is open, shorted or exhibiting leakage through LCD with 89c51 controller...{read more to download full material}

0756]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC DOOR/GATE OPENNER USING MICROCONTROLLER: The project is titled design and construction of an automatic gate opener using motion detecting sensor. Opening and closing of gates 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...{read more to download full material}

0757]. DESIGN AND FABRICATION OF INDUCTION HEATER: Induction heating is the process of heating an electrically produced heat by electromagnetic induction, through heat generated in the object by eddy currents. An induction heater consists of an electromagnet, and an electronic oscillator that passes a high-frequency alternating current (AC) through the electromagnet. The rapidly alternating magnetic field penetrates the object...{read more to download full material}

0758]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC EMERGENCY LIGHTING SYSTEM WITH ALARM: 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}

0759].DESIGN AND CONSTRUCTION OF STAR/DELTA STARTER FOR THREE-PHASE INDUCTION MOTOR:This work is on the forward reverse star delta electric motor control using switches. Moving ac motor clockwise and anticlockwise has many applications in the present technology, such as in our garage doors. Some garage door motors are easily reversed AC motors and geared down. Forwarding and reversing of an ac motor is done using a push button switches ...read and download

0760]. DESIGN AND CONSTRUCTION OF A BREAK FAILURE INDICATOR FOR FOUR WHEELS: This work is on design of break failure indicator for four wheels which is used to identify the Brake Failure in the Four Wheeler vehicle. All most all the vehicles are facing out the problem so called as brake failure, how to rectify? What to do to prevent this brake failure which results in more number of accidents. To overcome this problem, we find a solution called brake failure indicator in order to rectify the problem. This device provides an indication to a vehicle operator of failure of either the front or rear brakes, which apparatus will automatically reset itself upon correction of the failure...{read more to download full material}

0761]. DESIGN AND FABRICATION OF HEAT TREATMENT FURNACE: Metallic materials consist of a microstructure of small crystals called "grains" or crystallites. The nature of the grains is one of the most effective factors that can determine the overall mechanical behavior of the metal. Heat treatment provides an efficient way to manipulate the properties of the metal by controlling the rate of diffusion and the rate of cooling within the microstructure. Heat treating is often used to alter the mechanical properties of a metallic alloy, manipulating properties such as the hardness, strength...{read more to download full material}

0762]. 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 download full material}

0763]. CONSTRUCTION OF A STAND ALONE 2KVA PURE SINE WAVE INVERTER WITH BATTERY: This project is titled the design and construction of a 2Kva pure sine wave inverter system with battery. 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 ...read and download

0764]. APPLICATION OF ARTIFICIAL INTELLIGENCE IN AUTOMATIC DOOR: Automatic doors operate with the help of sensors. Sensors do exactly what they sound like they’d do: they sense things. An automatic door opens and closes door when the sensor senses someone or something. For example, some automatic doors operate when they’re triggered by sensors that sense weight. These weight sensors might be disguised in a rubber mat in front of the door. When you step on the mat...{read more to download full material}

0766]. THE EFFECT OF HUMIDITY AND TEMPERATURE ON THE RECEIVING OF A DIRECT SATELLITE BROADCAST: Direct-broadcast satellite (DBS) is a type of artificial satellite which usually sends satellite television signals for home reception. The type of satellite television which uses direct-broadcast satellites is known as direct-broadcast satellite television (DBSTV) or direct-to-home television (DTHTV). It  transmits video, audio, or data between two locations, which can be from just a few feet or meters to several miles or kilometers apart. Direct-broadcast satellite transmit programmes across a country, for instance, or from an outside broadcast back to a studio. When receiving broadcast from satellite, possibility is that signals may be reacting with the change in temperature and humidity. This effect is discussed in this work...{read more to download full material

0767]. DESIGN AND CONSTRUCTION OF AN ACCESS CONTROL SYSTEM: Access control system is a system that manages access through the authorization or revocation of rights to physical or logical assets within an organization or a practice of restricting entrance to a property, a building, or a room to authorized persons. The system uses a reader; the reader sends the credential’s information, usually a number, to a control panel, a highly reliable processor...{read more to download full material}

0768]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC ARMED ROBBERY PROTECTIVE SYSTEM USING GSM: Armed robbery is one of the most serious and potentially dangerous crimes committed in Nigeria today. A robber commits a hold up because he or she believes that their profit will be worth the risk. By decreasing the possible profit and increasing the risk of apprehension, potential victims can reduce their chance of becoming a target. Personal safety is always the most important consideration when planning how to react to an armed robbery. This material provides a device that can and will diminish robbery attact using GSM...{read more to download full material}

0769]. ASSESSMENT OF POWER SYSTEM RELIABILITY: Electric power has become increasingly important as a way of transmitting and transforming energy in industrial, military and transportation uses. Electric power systems are also at the heart of alternative energy systems, including wind and solar electric, geothermal and small scale hydroelectric generation. 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...{read more to download full material}

0770]. DESIGN AND CONSTRUCTION OF A THERMISTOR TEMPERATURE SENSING ALARM: This circuit is a temperature sensing alarm circuit. It activates an alarm whenever temperature rises above certain limits. Temperature control is very much essential in industries and some other places where temperature must be kept below certain levels so this circuit comes to the rescue in such sort of conditions. The element that plays a particular role in this circuit is Thermistor which senses the temperature of the environment. As the name implies THERMAL+RESISTOR .The resistance of thermistor and the temperature of the atmosphere is inversely related (i-e: with increase in temperature outside the resistance of thermistor will decrease and vice versa) this makes it useful as a temperature sensor...{read more to download full material}

0771]. DESIGN AND CONSTRUCTION OF AN AC CONTINUITY TESTER: This work is on AC-based continuity tester designed for frontline test and repair jobs. The circuit provides a simple test for localizing faults in multicore cables. Open circuits are more likely at connector ends. By identifying the faulty end, the AC continuity tester allows you to open and repair the correct cable end. This action avoids the risk of damaging a good connector by opening it up. This approach is also useful for testing an installed cable with ends at different locations...{read more to download full material}

0772]. A STUDY ON DUST EFFECT ON THE PERFORMANCE OF SOLAR PV PANEL: This work provides an appraisal on the current status of research in studying the impact of dust on PV system performance and identifies challenges to further pertinent research. A framework to understand the various factors that govern the settling/assimilation of dust and likely mitigation measures have been discussed in this work...{read more to download full material

0773]. DESIGN AND FAFRICATION OF DIP METER: Dip meter is a measuring instrument to measure resonant frequency of radio frequency circuits.  It is an oscillator whose amplitude changes when near a resonant circuit which is tuned to the frequency the oscillator generates. This is the main part of the instrument ( many different configurations are used in practice) is a very basic Colpits RF Oscillator using a VHF/UHF transistor. The meter uses a calibrated, tunable FET oscillator...{read more to download full material}

0774]. DESIGN AND CONSTRUCTION OF AN ARTIFICIAL INTELLIGENT SOLAR POWER GENERATION: The objective of this work is to use artificial intelligence methods for the optimal design of solar energy systems. The lifecycle savings of the system is used as the optimization parameter. The variable parameters in this optimization are the collector area, slope and mass flow rate and the volume of the storage tank. An artificial neural network is trained, using the results of a small number of simulations carried out with TRNSYS program, to learn the correlation of the above variable parameters on the auxiliary energy required by the system from which the lifecycle savings can be estimated. Subsequently, a genetic algorithm is employed to estimate the optimum size of the variable parameters, which maximizes lifecycle savings. As an example, the optimization of a large hot water system is presented...{read more to download full material}

0775]. ASSESSMENT OF NOISE INDUCED HEARING LOSS BY STUDENTS USING EARPHONE AND HEADSET IN NASPOLY: Voluntary exposure to loud noise may cause hearing loss and increase the prevalence of hearing impairment among adolescents. Noise-induced hearing losses (NIHL) have become more common among adolescents because of increased exposure to personal music players. Many adolescents used to listen to music by headphone. We aimed to assess whether the use of earphones has a significant effect on music-induced hearing impairment in teenage students...{read more to download full material}

0776]. DESIGN AND CONSTRUCTION OF AN ACCIDENT ALERT IN MODERN TRAFFIC SYSTEM WITH CAMERA: This project is developed for the users to have accident alert in modern traffic system. This device can be used in highly accidental area and pin drop curves to avoid accidents. It consists of two transmitters and two receivers. One transmitter is connected first (One arm of the curve) and a receiver is fixed just opposite to the transmitter. The other transmitter is connected at the same side(Other arm of the curve) and the receiver is fixed just opposite to the second transmitter...{read more to download full material}

0777]. DESIGN AND CONSTRUCTION ALCOHOL SENSING ALERT WITH ENGINE LOCKING: This work discuses about alcohol sensing alert with engine locking. Nowadays, higher percentage of accident that occur on high ways are caused by drinking alcohol – drunk drivers. So here we propose an innovative system to eliminate such cases. Our proposed system would be constantly monitoring the driver breath by placing it on the driver wheel or somewhere the drivers breath can be constantly monitored by it...{read more to download full material}

0778]. DESIGN AND CONSTRUCTION AN AC MAINS SURGE PROTECTOR WITH HIGH AND LOW VOLTAGE CUTOUT: A sudden surge or a spike is basically a sharp rise in the voltage lasting not more than a few milliseconds but enough to cause damage to our precious equipment almost instantly likewise over or under voltage...{read more to download full material}

0779]. DESIGN AND CONSTRUCTION OF AN AUTOMATIC EMERGENCY LIGHTING SYSTEM WITH BATTERY OVER-CHARGE PROTECTION CIRCUIT: This paper discusses the design and construction of an energy efficient automatic emergency Lantern with Battery Monitoring and Protection Circuit. It was implemented by designing and constructing each constituent parts of the entire system. The steps entail the design and construction of the ferrite core transformer, the design and construction of the blocking oscillator circuit, the construction of the fluorescent lamp circuit, the design and construction of the step-down voltage transformer for the charging circuit and finally the design and construction of the 12volts battery charger after bread boarding. It automatically switches on to the battery without a single blink in illumination when there is power failure. It remains significantly stable while in operation with no humming from the transformer...{read more to download full material}

0780]. DESIGN AND CONSTRUCTION OF AN ANTI-LOCK BRAKING SYSTEM (ABS):This work is on anti-lock braking system (abs).It is a safety system in automobiles. It prevents the wheels from locking while braking. The purpose of this is to allow the driver to maintain steering control under heavy braking and, in some situations, to shorten braking distances (by allowing the driver to hit the brake fully without skidding or loss of control)...{read more to download full material}

0781]. 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...{read more to download full material}

0782]. 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...{read more to download full material}

0783]. DESIGN AND CONSTRUCTION OF AN AIR FLOW DETECTOR CIRCUIT: Air flow detection is often necessary in many applications or systems where it is necessary to detect the presence of air to have a descriptive picture of the proper functioning of the systems. For example, we need air flow detection in engines to get an estimate about the amount of fuel to be added to the engine, we need air flow detection to check the amount of contamination or the transfer of contamination using chemical media like air. For high power density electronic devices, we need air flow detection to ensure the devices from getting over heated...{read more to download full material}

0784]. DESIGN AND CONSTRUCTION OF A DRIVER STAGE OF A 100W AUDIO AMPLIFIER:Driver stage of an amplifier is an amplifier circuit used to control amplifier output circuit, such as a high-power transistor. They are usually used to regulate current flowing through a circuit or are used to control the other factors such as other components, some devices in the circuit. The term is often used, for example, for a specialized integrated circuit that controls high-power switches in switched-mode power converters. Driver stage(s) of a circuit requires different characteristics to other circuit stages. For example in a transistor power amplifier, typically the driver circuit requires current gain, often the ability to discharge the following transistor bases rapidly, and low output impedance to avoid or minimize distortion...{read more to download full material}

0785]. DESIGN AND CONSTRUCTION OF A CAR BATTERY MONITOR SYSTEM: This project is about making an electronic voltage monitor system for car’s battery and its charging system. It plugs into the car’s cigarette lighter receptacle and displays the instantaneous output voltage across the battery terminals on a 4-digit seven segment LED display. This helps you to get early warnings for possible battery and its charging system problems. Microchip’s PIC16F1827 is the main controller in this project, which uses the built-in Fixed Reference Voltage (FVR) module to achieve a very precise and accurate A/D conversion of the battery voltage...{read more to download full material}

0786]. DESIGN AND CONSTRUCTION OF A BUS INFORMATION ALERT USING ZIGBEE: This project is very useful for blind people to identify their bus in the bus stand. The microcontroller used in this project is PIC 16F73. The microcontroller program is written in assembly language...{read more to download full material}

0787]. DESIGN AND CONSTRUCTION OF SIMPLE HYDROELECTRIC POWER STATION TURBINE: This project is on simple hydroelectric power station turbine. Hydroelectricity is the production of electrical power through the use of the gravitational force of falling or flowing water. Hydroelectricity is using water to power machinery or make electricity...{read more to download full material}

0788]. DESIGN AND CONSTRUCTION OF A MICROCONTROLLER BASED SECURITY DOOR USING SMART: This project shows the construction of a microcontroller based security door using smart card. It is aimed towards programming the microcontroller to control the hardware in sliding door. The system consists of a microcontroller 89S52 which sends a signal to the multiplexers on insertion of the smart card in the card slot...{read more to download full material}

0789]. DETERMINATION OF FOCAL LENGTH OF A LENS USING OPTICAL BENCH:The focal length of an optical system is a measure of how strongly the system converges or diverges light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus. A system with a shorter focal length has greater optical power than one with a long focal length; that is, it bends the rays more sharply, bringing them to a focus in a shorter distance...{read more to download full material}

0790]. DESIGN AND CONSTRUCTION OF NUMERIC CONTROLLED DOOR LOCKING SYSTEM:This project is titled design and construction of numeric keypad lock. It is design to meet up with the security demand of properties against theft. Numeric keypad lock is an electronic locking device which operates by means of electric current. Electric locks are sometimes stand-alone with an electronic control assembly mounted directly to the lock. More often electric locks are connected to an access control system. The advantages of an electric lock connected to an access control system include...{read more to download full material}

0791]. DESIGN AND CONSTRUCTION OF A BREAK LIGHT FLASHER: This project is titled design and construction of break light flasher. A break light flasher gives an indication of light when break of any vehicle is applied. Brake light flasher allows creating brake flashing effect from third brake light to catch the attention of drivers behind. . It works on both LED and incandescent bulbs. And a red light attached to the rear of a motor vehicle that lights up when the brakes are applied, serving as a warning to following drivers. This flashing brake light system can be used for motorcycles. When brake-light switch S1 is closed, power is applied to the circuit, which is a low frequency oscillator that feeds clock pulses into the base a power transistor which lights up the indicator, which will go OFF whenever the switch is released...{read more to download full material}

0792]. DESIGN AND CONSTRUCTION OF A CONTINUITY TESTER: A continuity tester is an electrical device used to determine if an electrical path can be established between two points; that is if an electrical circuit can be made. The circuit under test is completely de-energized prior to connecting the apparatus. The tester consists of an indicator in series with a source of electrical power - normally a battery, terminating in two test leads. If a complete circuit is established between the test-leads, the indicator is activated. The indicator may be an electric light or a buzzer.This led to the term "buzzing out a circuit" (which means to test for continuity). Audible continuity buzzers or beepers are built into some models of multimeter. A popular design has the tester combined with a standard flashlight. A phone connector or jack plug in the rear of the unit permits a set of test leads to be plugged in effecting a quick conversion between the two applications...{read more to download full material}

0793]. DESIGN AND CONSTRUCTION A POWER LINE VANDALISM MONITORING SYSTEM USING ARDUINO: Transformer vandalism is becoming an alarming issue in the whole world. Power distribution companies are incurring losses of billions of money due to transformer vandalism. This paper is going to contributes to the design and implementation of a transformer vandalism monitoring system architecture that can be used by the power companies to deter or monitor the transformers against vandals ...read and download

0794]. DESIGN AND CONSTRUCTION OF A FASTEST FINGER FIRST INDICATOR: This system determines as to which of the four contestants first pressed the button and locks out the remaining three entries. Simultaneously, an audio alarm and the correct decimal number display of the corresponding contestant are activated...{read more to download full material}

0795]. DESIGN AND FABRICATION OF ELECTRONIC IGNITION SYSTEM: The need for higher mileage, reduced emissions and greater reliability has led to the development of the electronic ignition systems. These systems generate a much stronger spark which is needed to ignite leaner fuel mixtures. Breaker point systems needed a resister to reduce the operating voltage of the primary circuit in order to prolong the life of the points. The primary circuit of the electronic ignition systems operates on full battery voltage which helps to develop a stronger spark. Spark plug gaps have widened due to the ability of the increased voltage to jump the larger gap. Cleaner combustion and fewer deposits have led to longer spark plug life...{read more to download full material}

0796]. DESIGN AND CONSTRUCTION OF A HIGH VOLTAGE FUSE BLOWN INDICATOR WITH LED DISPLAY: Looking at fuses, one cannot determine whether it is blown or not unless a resistance test is been conducted using meter. Apart from using meter another method is by using a fuse blown indicator which is an electronics circuit to display the condition of the fuse. This device indicate when there is blown fuse, it will show the condition of fuse through LEDs...{read more to download full material}

0797]. DESIGN AND CONSTRUCTION OF AN ELECTRIC CHANDELIER: Chandelier is a decorative ceiling-mounted light fixture. Chandeliers are often ornate, and normally use lamps. Crystal chandeliers have more or less complex arrays of crystal prisms to illuminate a room with refracted light. Chandeliers are often located in hallways, living rooms, and recently in bathrooms. Chandelier is a lighting fixture – a round or elongated, cone-shaped or straight item, which is made with glass or cut-glass...{read more to download full material}

0798]. DESIGN AND CONSTRUCTION OF A CORDLESS POWER CONTROLLER (CPC):  Cordless power controller is essentially a remote control implemented with the help of a cordless telephone. It has been developed as a standalone device as per the conventional DOT standards. Connecting Cordless power controller to the telephone line makes it possible to control lights, fans and other appliances of our home using our cordless phone...{read more to download full material}

0799]. 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}

0788].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...{read more to download full material}