>> As soon as devices are developed that can run directly off of rectified
line voltage (and
>>they're getting close)
YES! They may in fact, be here.
>> , power supplies for these will be cheap and very light weight.
Very much here. The power supply issue is probably possible to address at
the 50V drain level,
but I can't say for sure as I am a novice at buck converter design. Anybody?
>>Very high efficiency is also possible with envelope
elimination/restoration techniques and the like.
Or stick to CW/Digital.
>> Solid state devices also outlast tubes.
OOPS! I would say that they have the potential to outlast tubes. This
potential is only
realizable with very good design. Most SS amp engineers that I have spoken
to have quite
a bit bag of BeO packages filled with impure slagged beach sand.
George
K0IW
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