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Re: [TCML] SISG - now with a "real" pig coil
Phil,
With a primary Z of 15.8 ohms and a firing voltage of 21.6kV you are
looking at primary currents in the range of 1300Amps.
If you are using the "standard" IGBT`s, I`d say that is too high a current.
If a IGBT fails, the sidacs are sure to follow in short order.
A Pearson is your best friend.
Cheers, Finn Hammer
snip
FWIW, I'm still running the same .220 uF total primary tank.
Calculated ~55 uH of primary, 50kHz Fres calc and measured. Pig
ballasted to 60A max, variac'ed for 280V out. I didn't crank the
variacs past where the gap fired rhythmically, since I'm running STR
and I didn't want the BPS to run away (easy with a SISG). Six SISG-4
boards for 21.6kV firing point.
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