DESIGN AND CONSTRUCTION OF A TRANSISTOR TESTER
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This is to certify that the research work, "design and construction of a transistor tester" by ---, Reg. No. --/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.
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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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In electronics most commonly required component is transistor. Therefore the testing of the transistor is very important to avoid the future inconvenience and the loss to the manufacturer. Transistor tester is an instrument which is used to test the electrical behavior of a transistor. Commonly used devises to test the transistor are costly. So, in order to rectify this problem, we will go for transistor tester using transistors. This report will explain the circuit based on the above. In this system, we will use current meter to identify the condition of the given transistor to be tested.
TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
CHAPTER ONE
- INTRODUCTION
- BACKGROUND OF THE PROJECT
- PROBLEM STATEMENT
- AIM AND OBJECTIVES OF THE PROJECT
- BENEFIT OF THE STUDY
- APPLICATION OF THE STUDY
- SCOPE AND LIMITATION OF THE PROJECT
- RESEARCH QUESTION
- SIGNIFICANCE OF THE STUDY
CHAPTER TWO
LITERATURE REVIEW
- TRANSISTOR TESTER
- PROCEDURE OF A TRANSISTOR TESTER USING A DIGITAL MULTIMETER
- OVERVIEW OF TRANSISTORS
- HISTORICAL BACKGROUND OF TRANSISTOR
- DESCRIPTION OF COMPONENTS USED
CHAPTER THREE
METHODOLOGY
- BLOCK DIAGRAM
- CIRCUIT DESCRIPTION AND OPERATION
- CIRCUIT DIAGRAM WITH PARTS LIST
- DESIGN NOTES
- APPLICATION OF CIRCUIT
- PRECAUTIONS
- LAYOUT DESIGN
- COMPONENT ASSEMBLY
- SOLDERING
CHAPTER FOUR
4.0 TEST AND RESULT ANALYSIS
- CONSTRUCTION PROCEDURE AND TESTING ANALYSIS
- CASING AND PACKAGING
- ASSEMBLING OF SECTIONS
- TESTING OF SYSTEM OPERATION
CHAPTER FIVE
- CONCLUSION
- RECOMMENDATION
- REFERENCES
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
Bipolar junction transistors are often used in physical laboratory and in different electrical and electronic circuits for a variety of purposes. Sometimes during experiments or projects, they are required to test functioning of transistors.
A circuit tester is used to check whether a transistor which has previously been performing properly in a circuit is still operational. The transistor’s ability to “amplify” is taken as a rough index of its performance. This type of tester indicates to a technician whether the transistor is dead or still operative.
Some service testers include a go/no-go feature, indicating a pass when a certain hfe is exceeded. These are useful, but fail some functional but low hfe transistors.
Some also provide a means of identifying transistor elements, if these are unknown. The tester has all these features and can check solid-state devices in and out of circuit.
Transistor hfe varies fairly widely with Ic, so measurements with the service type tester give readings that can differ quite a bit from the hfe in the transistor’s real life application. Hence these testers are useful, but can’t be regarded as giving accurate real-life hfe values.
Transistor testers have the necessary controls and switches for making the proper voltage, current and signal settings. A meter with a calibrated “good” and “bad” scale is on the front.
This work is aimed at building a transistor tester is a tool that can be used to test the capability of various types of transistors. If any problem occurs due to transistors in the circuit board or motherboard of a device, then we can identify that problem with the use of a transistor tester.
1.2 PROBLEM STATEMENT
Multimeter is commonly used in testing transistors which tests transistor pins resistance. The challenge of using multimeter in carryout this test is that it is time consuming, costly and requires high level of professionalism. To overcome this challenge a simple transistor tester was built which is fast in indicating the state of a transistor and which does not need any form of professionalism and also cheap.
1.3 AIM AND OBJECTIVES OF THE STUDY
The main aim of this study is to build a device that is used to check whether a transistor is faulty or not. The objectives of the work are:
- To build the circuit
- To ensure that a transistor is in good conditions
- To make electronics work easy.
1.4 BENEFIT OF THE STUDY
The transistor tester is a very important instrumental tool for field technicians. Keeping its usefulness in mind, anyone who does technical work will definitely recommend it. It is a great alternative to a multimeter for testing or measuring the value of almost all types of components. This device has the ability to give a new dimension to the hardware industry. This is a very helpful tool for those who repair tv, laptop, pc. For a technician, the meters or testers like the multimeter, transistor tester, or clamp meter are very useful and increases their productivity.
1.5 APPLICATION OF THE STUDY
Transistor Tester is an instrumental tool primarily designed for field:
- technicians,
- hardware workers,
- and repairers.
1.6 SCOPE AND LIMITATION OF THE PROJECT
The scope of this work covers the building of a transistor tester which has the capacity of testing both NPN and PNP transistors. The transistor tester has a specific area with some little holes where the transistor legs are placed and their capacity is measured or tested.
Only detect whether Transistor is good or damage and does not show internal problem of the transistor. At a time only one transistor can be tested.
1.7 RESEARCH QUESTION
At the end of this work this research work shall bring answers to the following questions:
- What is the use of transistor tester?
- Which device is used for transistor testing?
- How do transistor testers work?
- How do you test a transistor?
1.8 SIGNIFICANCE OF THE STUDY
To technicians, transistor tester will help them to ensure accuracy in their work while doing technical work and you demand to save both your time and money while doing that work, then a transistor tester is the best instrument for you. Transistor Tester will increase someone productivity increases due to which you get more profit by making your work fast. Due to the transistor testers, the work of technicians has become so easy today that they could not live without giving it the status of a compulsory tool.
The device is small size and minimal weight, allowing the development of miniaturized electronic devices. It has low operating voltages compatible with batteries of only a few cells, Lower power dissipation and generally greater energy efficiency and higher reliability and greater physical ruggedness.
CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of "design and construction of a transistor tester" is also available. Order full work to download. Chapter two of "design and construction of a transistor tester" consists of the literature review. In this chapter all the related work on "design and construction of a transistor tester" was reviewed.
CHAPTER THREE: The complete chapter three of "design and construction of a transistor tester" is available. Order full work to download. Chapter three of "design and construction of a transistor tester" 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 transistor tester" is available. Order full work to download. Chapter four of "design and construction of a transistor tester" 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 transistor tester" is available. Order full work to download. Chapter five of "design and construction of a transistor tester" consist of conclusion, recommendation and references.
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