Tube challenge!

Ingo Debus debus at
Sat Nov 20 10:13:08 CET 1999

Harry Bissell wrote:
> With the high impedance of tubes... if you want to get "zero"
> interaction through the supply you should go separates.
> OTOH individual supplies can get pricey (transformers...)
> I don't think tube supplies are necessarily "easy" they just look that
> way because of the few components. They often have filter chokes that
> must be sized "just right" or they are ineffective (or worse..)

Why not make a power supply with LM317? Since this IC has no ground
connection it can be used for quite high voltages. It's no longer
short-cicuit proof then, though.


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