Vacuum tube rectifier

vetmed · 3725

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Offline Jim R.

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Reply #15 on: October 10, 2013, 04:39:14 AM
Could be. Could also be a way to get a 5v supply if you only have a 6.3v winding -- use one parallel set in both lines.

-- Jim

Jim Rebman -- recovering audiophile

Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).

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Offline Paul Birkeland

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Reply #16 on: October 10, 2013, 04:59:21 AM
That makes more sense than what I suggested!

Paul "PB" Birkeland

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Offline vetmed

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Reply #17 on: October 10, 2013, 11:32:47 AM
The only HV diodes I have on hand are some 1N5062s which have a forward voltage drop of about 1.1 volts at their rated 2A. Maybe use 4, 2 in parallel  back to back with another 2 in parallel? Should half the current demand on the diodes resulting in less forward drop :-\

Robert Lees

Robert Lees

Offline vetmed

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Reply #18 on: October 19, 2013, 04:56:13 PM
FWIW I installed two 0.1 ohm resistors in series and the voltage is now 5.1 volts, good enough for government work ;) The B+ dropped a whopping 3 volts ;D Happy that the rectifier tube will last longer :)

Regards
   Robert Lees

Robert Lees

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