Break-before-make control for form C solid-state relays

摘要

A solid-state relay (2) with delayed turn-on time without substantially increasing the time to bring the relay to full conduction after the delay. A current limiter (13) disposed in series with photodiode array (11) limits current therefrom to delay turn-on until the gate voltage of the output transistors is approximately the threshold voltage thereof. Once the threshold voltage is reached, the current limiter is bypassed so that the photodiode array provides full current to quickly turn-on the output transistors.