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DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.
ACKNOWLEDGEMENT
The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.
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A fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby interrupting the current. It is a sacrificial device; once a fuse has operated it is an open circuit, and it must be replaced or rewired, depending on type. Generally, when equipment indicates no power, the cause may be just a blown fuse. Here is a blown fuse indicator circuit that shows the condition of fuse through LEDs. This compact circuit is very useful and reliable. It uses very few components, which makes it inexpensive too.
TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
- PROBLEM STATEMENT
- AIM AND OBJECTIVES OF THE PROJECT
- SCOPE OF THE PROJECT
- SIGNIFICANCE OF THE PROJECT
- PROJECT ORGANISATION
CHAPTER TWO
LITERATURE REVIEW
- REVIEW OF ELECTRICAL FUSE
- HISTORICAL BACKGROUND OF FUSE
- CONSTRUCTIONAL REVIEW OF AN ELECTRICAL FUSE
- CHARACTERISTICS OF AN ELECTRICAL FUSE
- WORKING PRINCIPLE OF AN ELECTRICAL FUSE
- PRINCIPLE OF ELECTRICAL FUSE
- FUNCTION OF FUSE
CHAPTER THREE
3.0 METHODOLOGY
3.1 BLOCK DIAGRAM OF THE SYSTEM
3.2 CIRCUIT DIAGRAM
3.3 CIRCUIT DESCRIPTION
3.4 DESCRIPTION OF COMPONENTS USED
CHAPTER FOUR
4.0 TESTING AND RESULTS
- CONSTRUCTION PROCEDURE AND TESTING
- INSTALLATION OF THE COMPLET DESIGN
- ASSEMBLING OF SECTIONS
- TESTING OF SYSTEM OPERATION
CHAPTER FIVE
- CONCLUSION
- RECOMMENDATION
- REFERENCES
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
Fuses are employed in many electrical systems that are used by people on an everyday basis. For example, fuses are part of electrical systems found in automobiles, boats, motorcycles and other vehicles. These fuses function to stop electricity from flowing to a particular component of the system by creating an open circuit as a result of an unsafe electrical condition. However, these fuses have definite life spans, and after a period of time they burn out, leaving an open circuit which interrupts the flow of electricity to an appliance or a component of a system. In order to reinstate the flow of electricity, and bring the component of appliance back on, the blown fuse must be located and then replaced with another working fuse.
In many cases, all of the fuses for a system are grouped together at one fuse box. The fuse box may or may not be located in an easily accessible place. Typically, the fuse box is packed with numerous fuses positioned side-by-side, and it is therefore difficult to determine which of the numerous fuses is indeed blown. Conventionally, a chart, or map, is supplied with the fuse box which lists the electrical components corresponding to the various fuses. Accordingly, to locate the blown fuse, one must search the chart for the component that is not working, and then match the chart against the fuse box to locate the blown fuse. Of course, the difficulties inherent in such a system are even more pronounced when one attempts to replace a blown fuse in the dark or without adequate lighting.
In the past, efforts have been made to provide indicators for use in connection with identifying tripped circuit breakers (which work in much the same way as fuses but are merely reset rather than replaced when blown). Further, there have also been efforts made to develop a fuse box that includes indicators for indicating blown fuses. These indicators do not function automatically, but rather must be activated by actuating a switch which closes a circuit to illuminate an LED (Light Emitting Diode) corresponding to the blown fuse. At last, an electronic fuse blown indicator which displays when a fuse is blown was built – which is the focus of this study.
1.2 PROBLEM STATEMENT
Most fuses used in electronics or in some electrical appliances a fixed in places that are too difficult to located, and most of all these fuses are not transparent. Therefore difficult to determine which of the numerous fuses is indeed blown. In other to overcome these challenges, a fuse blown indicator built which is displays when a fuse is blown or not.
1.3 AIM AND OBJECTIVES OF THE STUDY
The main aim of this work is to provide an indicator for indicating a blown fuse. The objectives of the study are:
- To build the system prototype
- To provide an indicator which automatically indicate a blown fuse.
- To provide an indicator having LED's corresponding to fuses, which LED's are automatically illuminated when a corresponding fuse is blown.
The scope of this work covers building a Fuse blowing detector for detecting whether any of fuses has blown. The detector includes one light emitting diode for each fuse connected between the fuse and its load at one end. The other end is connected along with the other light emitting diodes to a switch, which is connected to an electrical source. When the switch is closed, the light emitting diode corresponding to a blown fuse is not lit.
1.5 SIGNIFICANCE OF THE STUDY
This device shall serve as a means of letting an electrician or electronics hobbyist to know when there an open circuit or short circuit. Building this circuit shall serve as a means of promoting electrical safety.
CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of "design and construction of a blown fuse indicator" is also available. Order full work to download. Chapter two of "design and construction of a blown fuse indicator" consists of the literature review. In this chapter all the related works on "design and construction of a blown fuse indicator" were reviewed.
CHAPTER THREE: The complete chapter three of "design and construction of a blown fuse indicator" is available. Order full work to download. Chapter three of "design and construction of a blown fuse indicator" consists of the methodology. In this chapter all the method used in carrying out this work was discussed.
CHAPTER FOUR: The complete chapter four of "design and construction of a blown fuse indicator" is available. Order full work to download. Chapter four of "design and construction of a blown fuse indicator" consists of all the test conducted during the work and the result gotten after the whole work
CHAPTER FIVE: The complete chapter five of "design and construction of a blown fuse indicator" is available. Order full work to download. Chapter five of "design and construction of a blown fuse indicator" consist of conclusion, recommendation and references.
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