[Amps] HV Diodes

[Dan Simmonds]

Jim,

It can be done, it's just chosen not to be. I received some custom 
plotting back from ST Micro a month ago showing the reflection tolerance 
of one of their dual gemini 100v FETs fed with just 70vdc on the drains. 
This puts you much further down from the V(br)DSS (breakdown voltage) 
point in a high-reflection event, and it will then deliver a true CCS 
into a 2:1 reflection, provided one keeps the thermals within spec, at 
the sacrifice of some power out the door for running at reduced drain 
voltage.

Dan KK3AN


> A SS 1.5 kw  rtty  amp is not gonna be cheap.
> Then toss in the  1.5 kw rated LP filters for each band,  RF deck,  pwr supply,  + 1.5 kw CCS  auto tuner.....so it doesn’t blow
> its brains out  with a 2:1  swr, etc, ..and you can  see why its expensive. 
>
> Jim  VE7RF