DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER

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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 ii

APPROVAL PAGE iii

DEDICATION iv

ACKNOWELDGEMENT v

ABSTRCT vii

TABLE OF CONTENTS vii

CHAPTER ONE

1.0 INTRODUCTION 1

1.1 BATTERY CHARGE 1

1.2 STORAGE BATTERY 3

CHAPTER TWO

COMPONENT PARTS 11

CIRCUIT DIAGRAM 33

CHAPTER THREE

BATTERY CHARGE CASING 36

3.1 THE CASING

3.2 FUL WAVE RECTIFICATION (POSITIVE HALF WAVE) 36

3.3 BLOCK DIAGRAM OF AN AUTOMATIC BATTERY 38

CHAPTER FOUR

TESTS AND OPERATION 39

4.1 BATTERY CHARGING 39

4.2 DIAGRAM OF CHARGING AND DISCHARGING CURVES 41

4.3 INDUCATION F FULLY CHARGED BATTERY 42

CHAPTER FIVE

5.1 SUMAMRY 44

5.2 CONCLUSIONS/SUGGESTIONS 45

REFEREN

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DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER

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