In Reply to: Solution? posted by Naz on March 24, 2015 at 03:27:20:
I lost three KT88's over a year due to 6.6-6.8v filaments. Filament burnout was virtually unheard of in the old days but the new Russian and Chinese tubes seem very critical about filament voltage.
What i did was to bring out the filament transformer primary to a separate AC connector ad used a Sola transformer to feed it.
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Follow Ups
- Filament Failure! - gusser 10:08:42 03/24/15 (7)
- And yet ... - Naz 15:28:58 03/24/15 (3)
- RE: And yet ... - DAK 00:38:23 03/25/15 (2)
- I've done lot's of things to test the limits ... - Naz 03:15:43 03/25/15 (1)
- RE: I've done lot's of things to test the limits ... - DAK 12:58:06 03/25/15 (0)
- RE: Filament Failure! - DAK 10:42:00 03/24/15 (0)
- RE: Filament Failure! - vinnie2 10:14:39 03/24/15 (1)
- Thta's no longer a problem! - gusser 14:27:20 03/24/15 (0)