Shake Tube power section Q's

[petemoore]

I decided to scrap the first draft, after all the corrections, the board got to crowded and messy... :cry:
 I built a new power section [a 10ohm, 2 diodes, a 1k, a 470ohm, and 4 X 470uf 35v caps.Tthe connections double check, as far as I can see.
 I took these readings, hoping that even without the rest of the circtuit connected, this section can be verified or debugged:
 Input= 10.84VAC [to ground and the 10ohm] from Wallwart.
 Output=28.Volts  DC [very close to 28]
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  Output seems a littel high, perhaps caused by a tolerance difference?
 Do these numbers look like they're ok to work with?
 
 The next board will host the OA, Tube & related circuitry. I'm hoping to be able to debug in sections like this, it seems like a good idea for a tubeeginner [tube beginner]...course as a beginner I would'nt really know if breaking it down like this works or if the rest of the circtuit needs to be connected to test the PS section.

[Paul Marossy]

28 volts does seem a little high, I don't think that I mine measured that high with a starting voltage of 13VAC. Did you hook up the tube filaments? You will measure a higher voltage after the voltage doubler with no load on your wallwart. In any case, most opamps will handle an "absolute maximum" differential voltage of 30 volts.

[petemoore]

Going to continure wiring ST #2 !!