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LF/MF
It seems to me if you are working with low V high
current FETS the RDS seems reasonable 0.02 for example but when a High V low
current device is need the RDS of these devices seem to be around 0.4
considerably higher.
therefore the efficiency of the amplifier will
never reach the 90% plus that some claim.
I stripped a plasma tv recently and found banks of
FETS (6 per bank) and wondered why the application neederd so many and have come
to the conclusion that because of the high RDS lots were required in parallel to
reduce the losses.
Maybe there are low RDS fets about that will handle
several hundred volts at modest currents ie 10A at 1000 volts
Room for thought
de mal/g3kev
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