DEVICE FOR SUPPLYING AUXILIARY POWER OF COMPUTER SYSTEM

摘要

PURPOSE: A device for supplying an auxiliary power of a computer system is provided to prevent working contents from being removed caused by a momentary power failure induced by an unstable AC power source or a power failure while the work is operated using a computer. CONSTITUTION: In a computer system(20) comprising a PC main body(21) and a monitor(22), an AC power source supplying unit(11) is provided for supplying an AC power source. A converter(12) converts an AC power source into a DC power source, and maintains a DC power source uniformly. A micro processor(C) monitors the computer system(20) and an inputted power source and a back-up battery(13) and performs a control for supplying a back-up power source at a power failure. The back-up battery(13) charges a power source being supplied from the converter(12) and supplies a power source to an inverter(14) in accordance with a command of the micro processor(C). The inverter(14) converts a DC voltage being supplied from the back-up battery(13) into an AC voltage, and supplies the AC voltage to the converter(12).