New hi-speed project

[BrianG]

Yeah, like that.

Lutach, why only 12s on a 100v FET? Even generously allowing for back-EMF pulses, that is still at least 20s. I wonder if the limiting factor of your 75v FETs is the other components (caps, etc)?

At any rate, for your typical 12s setup, the 60v FETs are fine IMO. And the ones you have access to seem quite a bit better than the ones currently in the HV-110 as far as the current, on resistance, and switching time goes. You'd only need one or two layers instead of 3 (of course, more won't hurt ).