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/diy/ - Do It Yourself

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>> No.1601792 [View]
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1601792

>>1601776
in photoflash circuits I have seen a second SCR which switches off the main SCR by discharging a negatively charged cap into it. you might be able to turn off a 3-quadrant triac the same way. search for "thyristor commutation" to learn more about how people do it
I have also seen people use SCRs/MOSFETs/IGBTs for ac switching by putting them inside a bridge rectifier and isolating the gate drive

>>1601787
it could also be overcurrent protection timeouts. lotsa magic in those little black boxes

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