Design of a Smart Embedded Uninterrupted Power Supply System for Computer Systems
Digital equipment such as computers, telecommunication systems and instruments use microprocessors that
operate at high frequencies allowing them to carry out millions or even billions of operations per second. A disturbance in
the electrical supply lasting just a few milliseconds can affect thousands or millions of basic operations. The result may be
malfunctioning and loss of data with dangerous or costly consequences (e.g. loss of production). That is why many loads,
called sensitive or critical loads, require a supply that is protected. Many manufacturers of sensitive equipment specify very
strict tolerances, much stricter than those in the distribution system for the supply of their equipment, one example being
Computer Business Equipment Manufacturer’s Association for computer equipment against distribution system
disturbances. The design of this uninterrupted power supply (UPS) for personal computer (PC) is necessitated due to a need
for enhanced portability in the design of personal computer desktop workstations. Apart from its original functionality as a
backup source of power, this design incorporates the unit within the system unit casing, thereby reducing the number of
system components available. Also, the embedding of this unit removes the untidiness of connecting wires and makes the
whole computer act like a laptop. Not to be left out is the choice of a microcontroller as an important part of the circuitry.
This has eliminated the weight and space-consuming components that make up an original design. The singular use of this
microcontroller places the UPS under the class of an advanced technology device.
Keywords - Uninterrupted Power Supply, Embedded System ,Personal Computer, Power Electronics, Automation.