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Re: Plate modulated GG triodes


 

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We build this kind of thing out of junk we have laying around.? It's out there is you ask and look for it.??


C

On Aug 24, 2023 10:57 AM, "HaL Mandel via groups.io" <hmandel@...> wrote:

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Dear Clark,

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Thanks for posting the reply to a previous post regarding the power supplies

for plate modulation.

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The schematic you included shows a grid reactor with a value of 20 henries.

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Wow.

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In this day and age finding the bits and pieces to put together a set

will probably require much time and investment. Gone are the days

of surplus treasures, I¡¯m afraid.

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Even approaching the fabrication of a viable transformer to run a couple of

gallons on HF is not so easy as it once was. PWD, then Hammond, then

Harbach... They may have the specs on file, but who can come up with a

tape-wound Hypersil and vacuum seal it like they used to in Texas?

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Anyway, thanks. Good luck on your build.

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Hal

W4HBM

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