Patent ID: 7233472

Claim:
A transient protection circuit for high power loads, comprising: a primary circuit leg having an input V IN in electrical communication with a drain of a MOSFET Q 1 and a source of the MOSFET Q 1 being an output of the primary circuit; a load circuit having an input V IN ′ in electrical communication with the output of the primary circuit leg, the load circuit having a winding N 1 forming a portion of one of an inductor L 1 or a transformer T 1 ; and a secondary circuit in electrical communication with a gate of the MOSFET Q 1 and in electrical communication with a zener diode VR 1 and wherein the zener diode VR 1 is electrically grounded, a circuit leg V GATE in electrical communication with a node between the gate of MOSFET Q 1 and the zener diode VR 1 being in electrical communication with a resistor R 2 , a circuit leg V B in electrical communication with resistor R 2 and in electrical communication with a diode D 1 , a circuit leg V A in electrical communication with diode D 1 and with a first terminal of a winding N 2 forming a portion of the one of an inductor L 1 or a transformer T 1 , and wherein another terminal of the N 2 winding is in electrical communication with the input VIN′ of the load circuit.