From: jl@glen--canyon.com   
      
   On Sun, 21 Dec 2025 09:24:02 +0000, Cursitor Doom    
   wrote:   
      
   >On Thu, 18 Dec 2025 12:30:50 -0800, john larkin    
   >wrote:   
   >   
   >>   
   >>https://secure.viewer.zmags.com/publication/5d3e6be3#/5d3e6be3/1   
   >>   
   >>I read a bunch of online electronics mags, mostly to stay current on   
   >>new parts. This one is more futurist gee-whiz.   
   >>   
   >>What's cool is that GaN fets are up to around 650 volts now and people   
   >>claim processes that will hit 1200.   
   >>   
   >   
   >For those of us peasants still using 2N3055s, what would such parts   
   >enable one to do?   
      
   I'm doing a physically small high voltage pulse generator just now.   
   The goal is at least 750 volt pulses with < 2 ns rise/fall into a 50   
   ohm load.  [1]   
      
   Avtech did it with SiC fets with drift step-recovery diodes to snap up   
   the edges. That's a lot of work. SiC is magic.   
      
   I rarely use bipolar transistors any more. Mosfets are faster and   
   easier to drive.   
      
   [1]  I'm using a standard DRQ inductor in the power supply and a   
   home-made transmission-line transformer in the output. Certain Parties   
   would not approve.   
      
      
   John Larkin   
   Highland Tech Glen Canyon Design Center   
   Lunatic Fringe Electronics   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)