Recent content by Johnie

snubber I thought I'd look at the dv/dt ratio when the thyristor is off (immediately after). In this case I can follow the loop from Vcc to ground and use Laplace to determine V(output) -> dV(output)/dt. From this I was thinking that I would pick a value for either L or C and calculate the...

snubber cct = circuit That is a thyristor (scr) (not a zener) A snubber is used mainly to protect a device from large rates of anode-to-cathode voltage and anode current. If dv/dt for the thyristor is too large, the device will begin to conduct without a gate signal present. If di/dt...

I'm trying to use this protection cct. What I do know is that (dv/dt)max = 50 V/us and (di/dt) = 10A/us (us = microseconds) R = 1 ohm, R = 5 ohm, Vcc = 120 V Can anyone give me an idea how to find the right L and C ? Thanks