Switching circuit utilizing a field effect transistor

Abstract From the Canadian patent

Abstract of the Disclosure, A switching circuit that utilizes an N-channel field effect transistor. The circuit can be used in a generator voltage regulator wherein the drain and source of the transistor are connected in series with the field winding of the generator. The circuit includes a capacitor that is repetitively charged and discharged. At the end of the charge period a gate bias voltage is developed that is applied to the gate of the transistor. The magnitude of the gate bias voltage that is developed is the sum of the capacitor voltage and the voltage of a voltage source. The capacitor is allowed to discharge until the gate bias voltage decreases to a value that is high enough to …