[Amps] HV smps

[Paul Decker]

A few brave builders have requested seeing the schematic to help me. 



I've uploaded the full schematic here: 



http://home.comcast.net/~kg7hf/FULL_amp.pdf 



The last page (4) is the h-bridge portion.     It seems the key is to understand what the dissipation through the h-bridge is during normal amplifier key - down.   The schematic is for a single 3cx800, however I want to build in enough margin for two 3cx800's. 



So, how do you figure out the power dissipation through a mosfet being used as a switch operating at 100 khz at 50% duty cycle in order to figure out how much heat sink to use? 





Thanks, 

Paul, kg7hf