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Re: [TCML] Spark gaps, Solid state switches and diodes
The 680 ohm seems "on the edge" and specific to your coil. Were you
trying to perform solid state forced quenching? This would be ok for
some coils to a degree, but could be very risky to say my 70kHz coil
that I'm running my SISG on where 330us is 3rd notch primary
quenching. The 4700 ohm provides plenty of ring time without an IGBT
energy crash and doesn't compromise charging. I'm just curious what
you actually gain from setting Roff so low?
I am running 680ohms on my CM600 T-Brisg
The quench time is dependant on gate capacitance, C1 value but also on
current trough IGBT. The gate-emitter capacitance is pumping charge into
the gate by each oscillation.
Cheers, Finn Hammer
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