In Reply to: Rectifier choices for 650v HT posted by andy evans on June 28, 2012 at 03:28:19:
Andy,
The 6AU4GTA is a great tube, but you need a pair and "gobs" of heater current. A 5AR4/GZ34 doesn't exhibit much more forward drop than damper diodes, uses a single socket, and "only" 2 A. of heater current. A reasonably priced Sovtek 5AR4 on the "hot" side of the bridge will be FINE combined with 2X 1200 PIV/2 A. Cree C4D02120A 2nd generation SiC Schottky diodes on the "cold" side. The is no arc over worry and zero switching noise to sneak into the power trafo.
The prices of the 2nd generation 1200 PIV SiC parts are reasonable.
Eli D.
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Follow Ups
- RE: Rectifier choices for 650v HT - Eli Duttman 20:03:49 06/29/12 (2)
- RE: Rectifier choices for 650v HT - andy evans 00:23:18 06/30/12 (1)
- RE: Rectifier choices for 650v HT - Eli Duttman 07:37:30 06/30/12 (0)