The utility model discloses an electric power switch, including first electric capacity to third electric capacity, first resistance to the 6th resistance, first triode to fourth triode, diode and stabilivolt, compare with prior art, the utility model discloses the circuit is by second electric capacity, the third triode cheng delays starting circuit with diode cluster, alternating current power supply input is charged to second electric capacity after the first triode of a capacitor filter and second triode switch on, the vehicle charging control system further comprises a second resistor, the fourth triode, the stabilivolt, third resistance, fourth resistance and the 5th resistance constitute voltage stabilizing circuit, guarantee the firm output of voltage, after export behind the thirdelectric capacity secondary filter, the saturation gradually of charging along with second electric capacity, the angle of flow of short third triode switches on gradually and provides the process ofa buffering for the circular telegram of electricity load ware, protect electric equipment, prevent the voltage surge, prevent the earth -leakage protector erroneous judgement, and has popularizationand application values.