[sdiy] OT: HV supply

[Travis Shire]

> You can often find high voltage stuff at hamfests. Do you really need
> the high voltage regulated? For tube circuits, although screen
> voltages are frequently regulated with a gas discharge tube,  the
> plate voltages are not often regulated. The hardest part about
> building a supply like that is finding the transformer. After that
> it's an afternoon's worth of soldering and two afternoon's worth of
> metalwork.
>
>
The ham swaps in my area are usually pretty small and I rarely see any
interesting (to me) stuff. I don't need a supply that will run a pwr amp
section, 50ma would be plenty.  The main thing I'm looking for is easily
adjustable plate and neg grid bias outputs. Saves alot of time when
designing around uncommon tube types and dialing in the right plate V for a
specific sound. I have a non regulated supply I built mainly for checking
condition of HV electrolytics so that's single output only.
I have a schemo for a couple of Heathkit supplies. They're not terribly
complicated, but tracking down correct panel meters and a suitable enclosure
would be more hassle than its worth. And, I hate the metalwork part :-/