DESIGN AND CONSTRUCTION OF UNINTERRUPTIBLE POWER SUPPLY

ABSTRACT The uninterrupted power supply (UPS) is design to help in the offices, workshops and house hold appliances, due to the unstable power supply being supplied by (NEPA) presently known as Power Holding Company of Nigeria (PHCN) usually supply to us.
With the help of the UPS we don't need to depend much on PHCN it is stress free because it don't need someone to change it over when light goes off, once there is any power failure it will automatically switched on and when power comes it will switch off and start charging the battery.
Another interesting thing in the UPS is that it does not need any external charger for charging the battery when it goes low, it have already built charger inside the UPS when there is light it will be charging the battery. 

TABLE OF CONTENTS COVER PAGE TITLE PAGE APPROVAL PAGE DEDICATION ACKNOWLEDGEMENT ABSTRACT TABLE OF CONTENTS
CHAPTER ONE INTRODUCTION INVERTER SECTION/OSCILLATION AUTOMATIC CONTROL SECTION AIM OF THE DESIGN
CHAPTER TWO DEFINITION OF TERMS/COMPONENTS DESCRIPTION RESISTORS CAPACITORS TRANSISTORS FIELD EFFECT TRANSISTORS RELAYS DIODE TRANSFORMER
CHAPTER THREE SECTIONAL DESCRIPTION FOR THE SYSTEM OSCILLATION CIRCUIT SECTION CIRCUIT OPERATION WAVEFORM OF AN OSCILLATION WAVEFORM OF AN INVERTER SWITCHING CIRCUIT SECTION POWER TRANSFORMER AND INVERTER ACTION PRECAUTION DURING WINDING OF TRANSFORMER AUTOMATIC CIRCUIT SECTION/CHARGER COMPLETE CIRCUIT DIAGRAM OF THE UPS
CHAPTER FOUR CONSTRUCTION PROCEDURE AND TESTING CASING AND PACKAGING ASSEMBLING OF SECTIONS TESTING OF SYSTEM OPERATION
CHAPTER FIVE PROBLEMS ENCOUNTERED, CONCLUSION AND RECOMMENDATION PROBLEMS ENCOUNTERED RECOMMENDATION
CHAPTER SIX COST ANALYSIS REFERENCES