Re: The KISS AMP: a progress report

André could try to use a swing choke at the cathode, this drops the voltage a bit, but when calculated correctly, >also provides a certain voltage stability.

Actually, I would test a single diode on the secondary side of the B+,
to drop the voltage to ~353V+/- to the rectifier. Through the
rectifier, that would give a mere 292V *excepting resistors* on the
output side. This is a heatless solution with an open-circuit failure
mode. The question/test would be one of the downstream effect of
feeding chopped DC into the 5AR4. Worth a test to get to smaller
resistors anyway, and a way to reduce the load on the secondary coil
considerably. I am always loath to put dropping resistors (or
"ballasts" as so elegantly noted) on the secondaries, why load the poor
windings? If a suitable transformer were not available, I would drop on
the primary side as much as practical.

Peter Wieck
Wyncote, PA

.

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