Power protection circuit and surge protection circuit thereof

Abstract

A power protection circuit includes a surge protection circuit and a filter and conversion circuit. The surge protection circuit receives a power source. The surge protection circuit includes an overvoltage protection unit, a surge current limiting unit and a control unit. The filter and conversion circuit is coupled to the surge protection circuit. The overvoltage protection unit is coupled to the power source, and the surge current limiting unit is coupled to the overvoltage protection unit. The control unit is electrically coupled to the overvoltage protection unit and is configured to detect whether the overvoltage protection unit has failed and transmit a status signal.

Dependencies are inferred from the claim text.