> I float B- above ground with roughly 125 ohms of R, in one case
> (separate PSU & RF deck) with 2 separate 250 ohm 25w Rs, one in each
> chassis, as well as a 1N5408 & .01 3kv cap on each side as well a la Lunar
> Link.
I have never seen this and I do not understand a reason for this practice
with one exception,
that being where a tube element is grounded and that element needs monitored
and protected, such as
a klystron where the "body" (cavities) are grounded but must not have more than
100 mA of current.
I am not sure if this design isn't providing grid bias inadvertently in some
amplifier designs,
bias that might vary for varying plate current.
I can't recall what a "la Lunar Link" is, I don't know if I ever heard of it.
--
Ron KA4INM - Remember, the government cannot give anything to anyone
that they have not first taken away from someone else.
(like you and me)
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