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Computer power supply

Computer systems have attained widespread use within many segments of today's society. A personal computer system can be classified as a desktop, floor standing, or portable notebook computer. In general, computers are provided with power supplies to supply them with the necessary direct currents. Since the power supply receives alternating current electrical power and converts the alternating current to direct current for operating the various electrical components, safety regulations require that the power supply be completely enclosed in a case to prevent access to potentially harmful high voltages. The computer power supply is a vital part in computer operating system and any abnormality in it may interrupt the operation process, and may even destroy the system device. Usually, a computer has only a single power supply. However, if the power supply cannot function during operation of the computer so that it cannot supply the computer with electric power, computer system failure or loss of files may result. An uninterruptible power supply (UPS) is well-known in the art as a device which accepts an electrical power input from the utility supply and supplies continuous, good quality electrical power to a computer. UPS systems can provide temporary power to the devices and systems so that the devices and systems can continue to operate despite the loss of the primary power source and thereby can reduce the likelihood that valuable data may be lost.

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