Safety auto pretective socket when power failure

A power-cut automatic protection socket is consisted by electrically integrating a normal pinboard with a power-cut automatic protection circuit wherein the power-cut automatic protection circuit is constituted of a 220V/5V AC/DC convertor, a RS trigger formed by two NANDs, a D trigger, a relayer J and contact JK thereof, resistances R1, R2, R3, a triode V, a reset switch K0 and a light-emitting diode VD. The two input ends of AC/DC convertor are connected with lines L, N of the power supply respectively, the contact JK of the relayer J is connected to the line L of the pinboard. The N line of the power supply connects electrically to the VD cathode of the light-emitting diode VD and The N line of the pinboard, the GND line of the power supply connects electrically to the GND line of the pinboard. The advantages of the utility model are: the power-cut automatic protection socket cuts off the electrical connection between the power supply and the pinboard after outage, and is unable to process the circuit automatically, therefor the manual connection is executed to eliminate the potential safety hazard and prevent from fire due to the unmanned operation.