In Reply to: RE: Rectifier choices for 650v HT posted by andy evans on June 30, 2012 at 00:23:18:
"I wasn't aware that GZ34 was comfortable at 650v? In particular the Russian ones have blown up in the past in amps I built."
The 5AR4/GZ34 isn't "comfortable" at 650 V. of B+, IF the setup is FWCT. However, the PIV rating is not close to being exceeded in a bridge setup. ;>)
Yes, Russian 5AR4s tend to misbehave at the top of the documented voltage range, but you are building a bridge and the SS diodes alone can "hold the fort down". Remember, in your bridge, a high PIV SS diode is in series with a vacuum diode at all times.
Eli D.
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Follow Ups
- RE: Rectifier choices for 650v HT - Eli Duttman 07:37:30 06/30/12 (0)