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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Here how I look at it. posted by cheap-Jack on February 1, 2007 at 08:01:11:
>But for DHTs, as Dave has said since the filament is itself a signal path, I would add a CLC filter in between the battery & the filament circuit of the tubes. Then grounding is unavoidable.That's not the only solution. Consider that the battery could float, serving only to heat the filament. Then, a centertapped resistor across the filament (with the centertap grounded) would become the signal path. Alternately, each side of the filament could be grounded for AC using bypass caps (or both methods could be used together). I don't know how Mark does it, though. That's why I asked.
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Follow Ups
- Re: Here how I look at it. - Triode_Kingdom 08:22:38 02/01/07 (1)
- Good question IF the filaments are floated &ungrounded. (nt) - cheap-Jack 08:37:31 02/01/07 (0)
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