Semiconductor switching circuit

Details Semiconductor switching circuit Semiconductor switching circuit

H - Electricity

03

K

328/114.3

H03K 17/687 (2006.01) H03K 17/04 (2006.01) H03K 17/0412 (2006.01) H03K 17/785 (2006.01)

Patent

CA 1275708

Abstract of the Disclosure A semiconductor switching circuit comprises an output FET receiving a photovoltaic output generated by a diode array responsive to a light signal from a light emitting element, a depression mode driving FET connected at the drain and source to the gate and source of the output FET, and a constantvoltage conduction element connected in parallel with a resistor connected across the gate and source of the driving FET. The sensitivity of the circuit is elevated by setting the value of this resistor relatively high, whereas the high speed operation can be assured by having discharge current of an accumulated charge across the drain and gate of the output FET bypassed through the resistor.

543599

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