DESIGN AND CONSTRUCTION OF A 12 VOLTS AUTHOMATIC BATTERY CHARGER

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