High -voltage switch control circuit

The utility model discloses a high -voltage switch control circuit, including electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, triode Q1, triode Q2, triode Q3, triode Q4, rectifier bridge D1, stabilivolt D2, stabilivolt D3, emitting diode D4, semiconductor power tube U1, two -way stabilivolt U2, two -way stabilivolt U3, two -way stabilivolt U4, inductance L1, inductance L2, inductance L3, power module VR1, NAND gate U5A, NAND gate U5B, NAND gate U5C, NAND gate U5D and optoelectronic coupler U6. The utility model provides a because drive output that high -voltage switch usually by mode control actions such as coil dropouts, observed and controled equipment for us, perception during its load when the power device carries out the branch operation, had voltage generation, if protect not, problem that the power device can be punctured.