Design And Construction Of 45W Audio Power Amplifier
This thesis gives the account for the design and construction of a 45W Audio Power Amplifier with the objective of producing a reliable and cheaper amplifier that can be used in a household or stage.
The Audio Power Amplifier was constructed with electrical/electronics components such as resistors, capacitors, transformer, transistors and so on. Many tools/instruments like soldering iron, multimeter and so on were used.
The 45W Audio Power Amplifier when compared with other types of Audio Power Amplifier of the same rating in the market is cheaper as the components and materials used were locally sourced and selected to suit the desired purpose and environment.
1.1 INTRODUCTION
Many centuries back people found it difficult to be heard over a few metres away from them while addressing their audience. This motivated the need for man to pursue new technologies which will increase his reliability and efficiency. Man in search of the audio boosting instrument developed an aspect of communication called “Public Address System (PAS)”, which helps an individual to address or communicate to a large group of people. Through this system for instance, a clergyman can address his congregation, an entertainer can communicate to his audience, a politician can address his supporters and so on.
The Public Address System (PAS) comprises of a microphone which converts sound energy to electrical energy, an amplifier which increases the strength of the electrical signals and a loudspeaker which reconverts the electrical energy of the signals to sound energy.
In the PAS, the sound energy at the loudspeaker has greater power than that at the microphone hence, the sound is more louder. This reduces the stress of the individual using the microphone from shouting. The power output of the speaker depends on the power rating of the loudspeaker and that of the amplifier.
Moreover, an amplifier may be defined as a system or an electronic circuit which accepts signals at its input and gives out signals at its output grater than the signal at its input in amplitude or power or current. The output signal is similar to the input signal in shape, form and frequency.
Therefore, the objective of this project is to construct a reliable and cheaper 45W Audio Power Amplifier that is suitable for our households and environment, and that can be effectively produced eve in out recent depressed economy. In other words, this project is intended to amplify all the audio signals from the microphone and any other source of sound connected to it and to provide solutions to most of the problems being faced by the audience.
The scope of this project covers the design and construction of an Audio Power Amplifier which will form part of the PAS and aid in good sound production.
Title Page
Dedication
Acknowledgement
Approval Page
Abstract
List Of Tables, Graph And Figures
Table Of Contents
Chapter One
1.1 Introduction
Chapter Two:
2.0 Description Of Circuit Element
2.1 Resistors
2.2 Capacitors
2.3 Diodes
2.4 Bipolar Junction Transistor (Bjt)
2.5 Integrated Circuits (Ics)
Chapter Three:
3.0 Principle Of Operation
3.1 Power Supply
3.2 Pre-Amplifier
3.3 Tone Control
3.4 Power Amplifier
Chapter Four:
4.0 Construction And Testing
4.1 Breadboard/Prototyping
4.2 Circuit Layout
4.3 Construction
4.4 Testing And Result
4.5 Packaging
4.6 Costing
Chapter Five:
5.0 Summary
5.1 Conclusion
5.2 Recommendation
References
The Title Page should be the first section of your project “Design And Construction Of 45W Audio Power Amplifier”, 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.
Next, the Table of Contents organizes the Design And Construction Of 45W Audio Power Amplifier by listing its chapters and sections, along with page numbers for easy reference. The List of Figures and List of Tables help guide readers to specific visual elements like graphs, charts, or tables included in the document. There should also be an Abbreviations and Glossary section to explain any specialized terms or acronyms, making the content clearer to readers unfamiliar with the technical language.
The main body of the Design And Construction Of 45W Audio Power Amplifier 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 45W Audio Power Amplifier 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 45W Audio Power Amplifier 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