SCR_LATCHING_CIRCUIT_WITH_RATE_EFFECT_SUPPRESSION

Published:2009/7/15 23:09:00 Author:Jessie | From:SeekIC

With basic scr latching circuit (at left) for latching on lamp when input voltage level is exceeded, resetting of circuit by opening supply lead exposes scr to fast transients and possible turn-on due to rate effect. Adding 100,000-ohm resistor and using four-terminal silicon controlled switch suppresses rate effect.-R. A. Stasior, How to Suppress Rate Effect in PNPN Devices, Electronics, 37:2, p 30-33.



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