what is the role of power supply unit?
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A Power Supply Unit (PSU) is an internal IT hardware component. ... Specifically, a power supply converts the alternating high voltage current (AC) into direct current (DC), and they also regulate the DC output voltage to the fine tolerances required for modern computing components.
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The role of a power supply unit is to convert electric current from a source to the correct voltage, current, and frequency to power the load. The input and output are usually hardwired circuit connections, though some power supplies employ wireless energy transfer to power their loads without wired connections.
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