27 Jul
2007
27 Jul
'07
10:54 p.m.
From: "Chuck Guzis" <cclist at
sydex.com>
Hi
I've never had a gassy tube restore under any condition.
I have restored filaments with poor emition by running them
at higher voltages for some time.
Dwight
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On 28 Jul 2007 at 0:29, William Donzelli wrote:
That is a old radio myth - it does not work any
better than just
letting the tube do its own thing.
It's probably not a bad idea to limit inrush current, however. A
surgistor will do that trick.
I seem to remember it's also advisable to let mercury-vapor
rectifiers that haven't been used for a long time "cook" without
plate voltage the first time they're used (beyond, that is, the
initial normal warm-up time).
...but then, I'm telling anyone anything they don't already know.