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In Reply to: RE: yes, yes, and yes... posted by Lee of Omaha on June 18, 2016 at 13:16:13
Lee
Tube rectifiers are lossy and with today's very fine Schottky diodes which are ultra quiet,I no longer see diodes at a disadvantage.Now they have high voltage Schottkys where they never had them in years past in the 1.2kv range.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Follow Ups:
The one argument for vacuum rectifiers is that they provide a delayed application of B+ to the other tubes. Since many vacuum rectifiers are directly heated, there just isn't much of a difference, as directly heated rectifiers start to conduct well after just a second or two, compared with 10-20 seconds for indirectly heated tubes. And solid state rectifiers usually don't fail.
I wasn't arguing in favor of tubed rectification, just pointing out that there's usually not room for a second one, so conversion to solid state rectification is usually necessary when converting to dual power supplies.
It's a Harman Kardon with a voltage doubler. Nearly all their amps and receivers used this topology.
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Buy Chinese. Bury freedom.
We were just talking about rectifier tubes in general..
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
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