THE DESIGN AND CONSTRUCTION OF A 40 WATT HI-FI AMPLIFIER
By
AMOS NSIKAN EE/H2003/094
Presented To
Department of Electrical/Electronic Engineering
High power amplifier are usually quite costly and usually beyond the easy reach of most audio enthusiastic (and Hi-Fi buffs) who then have to remain satisfied with those small 6 watt amplifiers. Well, with this introduction to us and to electronics, things should change. Well this low cost Hi-Fi amplifier that delivers ear chatting and thundering output of an unbelievable forty watts. The unique features of this circuit are.
- Low cost – The basic criteria
- Compact size
- Very low transient noise on “power on” and low THO
- Effective Bass and treble controls
- Automatic thermal shut down system it switches off the amplifier in case of overheating
- Load damp protection in built.
The circuit uses a high power amplifier chip viz the LA 4440. the circuit is quite self explanatory. The input is coupled by a small value capacitor. The output is taken through a block terminal and fed to the speaker.
TABLE OF CONTENT
Approval page
Dedication
Acknowledgement
Table of content
CHAPTER ONE
Introduction
CHAPTER TWO
Components Explanation
Capacitor
Value of a capacitor
Tolerance
Working voltage
Leakage current
Component and Operation of a Capacitor
Resistor
Printed Circuit Board
Loudspeaker
Cabinet Screen
Heat Sink
Variable Resistor
Integrated Circuit
Diode
CHAPTER THREE
Diagrams of project
Operation manual
CHAPTER FOUR
Construction
Economic of the project
Reliability
Maintainability
Testing
CHAPTER FIVE
Conclusion
Bibliography
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