>From: rohre, rohre@arlut.utexas.edu
>
>Reality Check Time re a 500 watt TRANSISTOR amplifier Kit! Look at the
>proposed 13.8 Volt operation. Look at the OHMS LAW for this operation! Who
>builds such transformers? Who can afford them?
Who says you have to use 13.8 volts? Why not 24, 28 or 50 volts?
(Provided the high-power transistors can handle it)
As for transformers -- can you say switching power supplies? That solves
part of the transformer problem.
>The only practical way to develop higher power is to use higher voltage
>transistors or FETS. Makes a pretty complicated kit.
Higher voltage transistors is in no way more complicated.
>Don't you wonder why the vast majority of Linear manufacturers are still
>using Tube Finals? The power supply and tubes for that cost A LOT LESS than
the
>solid state solution.
Tubes aren't getting any cheaper. At some point, we'll reach the
watershed where a solid state devices are a better alternative. (We may
have to wait until someone produces 500W MMICs....)
Bill Coleman, AA4LR Mail: aa4lr@radio.org
Quote: "Not in a thousand years will man ever fly!"
-- Wilbur Wright, 1901
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