Fast turn-off circuit for solid-state relays or the like

Details Fast turn-off circuit for solid-state relays or the like Fast turn-off circuit for solid-state relays or the like

1993-08-05

1994-11-01

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

327377, 327514, G02B 2700, H03K 342

Patent

active

053609794

ABSTRACT:
A fast turn-off circuit for solid-state relays or the like. The relay has a photodiode array for controlling the conductivity of an output transistor. A JFET switch closes to discharge the gate of the output transistor when a photodiode array stops producing current. A bipolar transistor switch, upon detecting the JFET switch closure, discharges the photodiode array.

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