DESIGN AND CONSTRUCTION OF 45W AUDIO POWER AMPLIFIER – Complete Project Material

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DESIGN AND CONSTRUCTION OF 45W AUDIO POWER AMPLIFIER

By

OKPO ANTHONY S.I EE/N2003/021

Presented To

Department of Electrical/Electronic Engineering

ABSTRACT

A battery charger is an electrical device employed for charging batteries.  This batteries that are usually charged by battery changer are the storage battery charger are the storage batteries also known as “accumulator” the battery changer changes.  The alternating current form the power line into d.c suitable for charging.

When the battery is fully changed, is up to it’s maximum, 12 volt, the charger with automatically stop changing with the help of the contact relay, the transistor and the zener diode when bend the current back to the system.

TABLE OF CONTENTS

 TITLE PAGE

APPROVAL PAGE

DEDICATION

ACKNOWLEDGEMENT

ABSTRACT

TABLE OF CONTENT

CHAPTER ONE

1.1 INTRODUCTION

1.2 STORAGE BATTERY/METHOD OF CHARGING

CHAPTER TWO

COMPONENT OF THE POWER

SUPPLY UNIT

THE RECTIFYING UNIT

THE SMOOTHING UNIT

THE REGULATOR AND REGULATED

D.C CHARGING UNIT

CHAPTER THREE

CIRCUIT DESIGN/DIAGRAMS

3.1 THE CASING

3.2 FULL WAVE RECTIFICATION (POSITIVE HALF WAVE)

3.3 THE BRIDGE RECTIFICATION

3.4 THE BLOCK DIAGRAM

3.5 THE CIRCUIT DIAGRAM 

3.6 THE CONSTRUCTION

CHAPTER FOUR

TESTS AND OPERATIONS

4.1 BATTERY CHARGING

4.2 DIAGRAM OF CHARGING AND DISCHARGING CURVES

4.3 INDICATION F FULLY CHARGED BATTERY

CHAPTER FIVE

5.1 SUMMARY

5.2 CONSTRAINTS

5.3 CONCLUSIONS/SUGGESTIONS

5.4 COST OF PRODUCTION

REFERENCES

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