In Reply to: RE: I don't direct couple because I use filament bias. posted by drlowmu on August 7, 2014 at 12:10:40:
Hi Jeff,
I'd like to.. I had it running with the 2A3 supply stacked on the input/driver B supply without the IT, it made me nervous enough with the OPT not being sufficiently rated for the voltage WRT 0V (UBT-1), had the core floating at 255V to make it sort of acceptable. I had TS jack for measuring driver filament voltage and it shorted, output stage ran away.. I don't know how it didnt melt down the OPT but I'm just not needing that sort of stress. It sounds good enough, perhaps not as good, but eh, you know.
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Follow Ups
- RE: I don't direct couple because I use filament bias. - shane. 08/7/1419:08:51 08/7/14 (5)
- RE: I don't direct couple because I use filament bias. - drlowmu 09:35:29 08/9/14 (4)
- RE: I don't direct couple because I use filament bias. - shane. 17:27:19 08/9/14 (3)
- RE: I don't direct couple because I use filament bias. - drlowmu 11:58:32 09/9/14 (2)
- RE: I don't direct couple because I use filament bias. - shane. 15:24:07 09/9/14 (1)
- RE: I don't direct couple because I use filament bias. - horn kid 08:54:52 11/2/14 (0)