PUSHBUTTON_CONTROLLED_POWER_SWITCH

Published:2009/7/10 5:13:00 Author:May | From:SeekIC

In both circuits, the SCR (and thereby the lamp) can be latched on by momentarily closing S1, thereby feeding gate drive to the SC via R1. In both circuits, the gate is tied to the cathode via R2 to improve circuit stability.Of course, after the SCR turns on, it can be tumed off again only by momentarily reducing anode current below the device's IH value. The SCR is tumed off by momentarily opening S2, by using S2 to short the anode and cathode terminals of the SCR momentarily.



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