In Reply to: RE: Poor Design for a Preamp posted by mwhouston on February 16, 2025 at 19:58:38:
Are you using AC for the 5 volt filament?
You might want to try a critical inductance input choke filter DC supply for a DHT.
Or maybe try Rod Coleman's Filament Regulators.
Tre'
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Follow Ups
- Yes, with DHTs hum can be an issue - Tre' 20:29:51 02/16/25 (12)
- RE: Yes, with DHTs hum can be an issue - mwhouston 20:34:15 02/16/25 (11)
- RE: Yes, with DHTs hum can be an issue - Tre' 20:39:48 02/16/25 (10)
- RE: Yes, with DHTs hum can be an issue - mwhouston 03:48:34 02/26/25 (2)
- RE: Yes, with DHTs hum can be an issue - FlaCharlie 06:32:38 02/26/25 (1)
- RE: Yes, with DHTs hum can be an issue - mwhouston 13:32:24 02/26/25 (0)
- RE: Yes, with DHTs hum can be an issue - mwhouston 20:51:24 02/16/25 (6)
- RE: Yes, with DHTs hum can be an issue - Tre' 21:37:40 02/16/25 (5)
- RE: Yes, with DHTs hum can be an issue - FlaCharlie 07:45:40 02/17/25 (4)
- RE: Yes, with DHTs hum can be an issue - mwhouston 16:42:17 02/19/25 (0)
- Those are all good ideas but... - Tre' 09:06:57 02/17/25 (2)
- RE: Those are all good ideas but... - mwhouston 13:50:02 02/20/25 (1)
- "I tried for months but to no avail." - Tre' 18:16:22 02/20/25 (0)