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 PAGEii

APPROVAL PAGEiii

DEDICATIONiv

ACKNOWELDGEMENTv

ABSTRCT vii

TABLE OF CONTENTS vii

CHAPTER ONE

1.0 INTRODUCTION1

1.1BATTERY CHARGE1

1.2STORAGE BATTERY3

CHAPTER TWO

COMPONENT PARTS 11

CIRCUIT DIAGRAM 33

CHAPTER THREE

BATTERY CHARGE CASING36

3.1THE CASING

3.2FUL WAVE RECTIFICATION (POSITIVE HALF WAVE) 36

3.3BLOCK DIAGRAM OF AN AUTOMATIC BATTERY 38

CHAPTER FOUR

TESTS AND OPERATION39

4.1BATTERY CHARGING39

4.2DIAGRAM OF CHARGING AND DISCHARGING CURVES41

4.3INDUCATION F FULLY CHARGED BATTERY42

CHAPTER FIVE

5.1SUMAMRY44

5.2CONCLUSIONS/SUGGESTIONS45

REFEREN

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DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER

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