CONSTRUCTION OF 200W UNINTERRUPTIBLE POWER SUPPLY
CHAPTER ONE INTRODUCTION 1.1 BACKGROUND OF THE STUDY The idea behind a UPS (Uninterruptible Power Supply) is pretty obvious from the name, in addition to filtering, enhancing or modifying the unity power, special circuit and batteries are used to prevent electrical machines from losing power during a disruption (blackout or voltage sag brownout). The units are all called different names depending on the next design, but all fit into general category ...
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