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US5698908A Buffered DC power supply system 失效
缓冲直流电源系统

Buffered DC power supply system
摘要:
Power supply system having a buffered intermediate voltage which is supplied by an auxiliary voltage source in the event of failure of a principal voltage source, there being generated from the intermediate voltage by comparison with a threshold value a digital failure signal which both controls the auxiliary voltage source and is used to form a final failure signal.
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