Design And Construction Of A Capacitor Evaluator
Using this circuit and a known-value capacitor, you can find out the value of any capacitor. This circuit can be divided into capacitor evaluator and display sections. The capacitor evaluator circuit works off regulated 5V and 12V, while the display unit works off 5V. Connect 5V, point Y and ground of the capacitor evaluator section to the respective terminals of the display section.
TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
- PURPOSE OF THE PROJECT
- AIM OF THE PROJECT
- OBJECTIVE OF THE PROJECT
- PURPOSE OF THE PROJECT
- LIMITATION OF THE PROJECT
- ADVANTAGES OF THE PROJECT
- PROBLEM OF THE PROJECT
- APPLICATION OF THE PROJECT
- RESEARCH QUESTION
- PROJECT ORGANISATION
CHAPTER TWO
LITERATURE REVIEW
- OVERVIEW OF THE STUDY
- REVIEW OF THE RELATED STUDY
CHAPTER THREE
3.0 CONSTRUCTION METHODOLOGY
3.1 BASIC OF THE SYSTEM
3.2 BLOCK DIAGRAM OF THE SYSTEM
3.3 SYSTEM OPERATION
3.4 CIRCUIT DIAGRAM
3.5 CIRCUIT DESCRIPTION
3.6 DESCRIPTION OF COMPONENTS USED
3.7 POWER SUPPLY UNIT
CHAPTER FOUR
4.0 TESTING AND RESULTS
- CONSTRUCTION PROCEDURE AND TESTING
- INSTALLATION OF THE COMPLET DESIGN
- ASSEMBLING OF SECTIONS
- TESTING OF SYSTEM OPERATION
- COST ANALYSIS
CHAPTER FIVE
- CONCLUSION
- RECOMMENDATION
- REFERENCES
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Capacitor Evaluator Circuit
Fig. 1: Capacitor evaluator circuit
As shown in Fig. 1, the capacitor evaluator comprises a linear ramp generator built around timer IC 555 (IC1). A linear ramp is generated when the resistor between the power supply and shorted pins 6 and 7 of the monostable circuit is replaced with a constant-current source formed by the circuit built around pnp transistor CK100 (T1). Push-to-on switch S1 is used to trigger ramp generator IC1.
The time period of linear ramp is given by:
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The output pulse duration at pin 3 of IC1 is counted by the circuit comprising the astable multivibrator built around timer 555 (IC2) followed by decade counter ICs 74LS90 (IC3 and IC4), which are 4-bit ripple decade counters. The outputs of IC3 and IC4 are connected to decoder/driver ICs 74LS47 (IC5 and IC6), respectively, which are further connected to 7-segment common-anode displays LTS542 (DIS1 and DIS2) for displaying the frequency of astable (IC2) used to evaluate the value of unknown capacitors.
Fig. 2: Display circuit
Circuit operation
If the counter counts up to ‘N1’ for known-value capacitor C1 and up to ‘N2’ for unknown capacitor C2, you can calculate the value of the unknown capacitor from the following relationship:
Insert known-value capacitor C1 (say, 47µF) into the ‘CUT’ socket shown in Fig. 1 and press S1 momentarily. The counter counts up to, say, ‘32’ (N1). Now remove the 47µF capacitor from the socket and insert the unknown-value capacitor (C2). The counter now counts up to, say, ‘16’ (N2).
Substituting the values of C1, N2 and N1 in Eq. (2) gives 23.5 µF as the value of the unknown capacitor.
The Title Page should be the first section of your project “Design And Construction Of A Capacitor Evaluator”, providing essential details like the project title, your name, your supervisor’s name, the institution, and the submission date. After that, the Abstract offers a brief summary of your project, touching on its purpose, methods, results, and conclusions in 150-300 words. The Acknowledgments section is where you can thank those who supported your research, such as your supervisor, peers, or organizations that provided resources.
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The main body of the Design And Construction Of A Capacitor Evaluator should start with the Introduction, which provides background information, outlines the research problem, states your objectives, and gives a brief overview of your research methods. Following that, the Literature Review offers an in-depth look at previous research relevant to your project, identifying gaps your study aims to address. The Methodology section then explains the research design, tools, and data collection methods you used to conduct the project and analyze the data.
In the Results and Discussion section, you present your findings and discuss them in relation to the Design And Construction Of A Capacitor Evaluator research questions or objectives, often using tables or charts to help explain the data. The Conclusion summarizes the key results, discusses their implications, and suggests possible directions for future research. You may also include recommendations based on your findings, offering practical advice for improvements or applications. Finally, the Design And Construction Of A Capacitor Evaluator project should include a References or Bibliography section to list all the sources you cited, as well as Appendices for any additional material. A Statement of Originality is often included to confirm the authenticity of your work