[AMRadio] Supply for PP 304TLs ??

[Jeff Edmonson]

Subject: [AMRadio] Supply for PP 304TLs ??


> By any chance is anyone running an HF amp or transmitter with push-pull 304TL
tubes in the final? I have this homebrew here that uses this configuration. But
the power supply it came with is in pieces and it is a mess. It was modified
many times over the years by the builder and has been patched more than a
Microsoft software product.

Sounds like someone I know (not me) :-)

> So this thing needs a filament, screen and HV supplies. I can use some of the
original parts. But for the HV, I don't want to use the original design because
it is built around a 230V pole pig transformer and has lots of quirky design
anomalies that I can live without (Anbody need a 125 pound pole pig? It'll give
you 1700 to 2200 volts all day. The only drawbacks are that it is huge and
weighs a ton).

Screen Supply?  for a pair of Triodes?

> So I'd like to cheat and see how someone else is powering their rig to get
some ideas.  References to complete designs in any of the popular literature
would be useful too. Can anyone help?

a regular Choke-input supply can't be simpler...  I think even I could probably
muddle through one, now. ;-)

73 = Best Regards,
-=Jeff/W5OMR=-