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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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I'm considering a DC-coupled cathodyne in my next amplifier build. The power supply will be SS, so I'm concerned about protecting the cathodyne tube. One of the candidates I'm looking at for this service is the 12B4, and its high transconductance makes me suspect it has a relatively small G-K spacing. Will a NE-2 neon bulb between grid and cathode be sufficient to protect this particular tube?
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Topic - Cathodyne Protection - Triode_Kingdom 01:18:50 04/01/21 (11)
- Yes, it works - garymuffley 10:09:00 04/01/21 (6)
- Thanks - I wonder why this doesn't short? - Triode_Kingdom 15:59:16 04/01/21 (5)
- RE: Thanks - I wonder why this doesn't short? - Paul Joppa 17:29:09 04/01/21 (4)
- RE: Thanks - I wonder why this doesn't short? - Triode_Kingdom 18:26:30 04/01/21 (3)
- RE: Thanks - I wonder why this doesn't short? - Paul Joppa 21:16:04 04/01/21 (1)
- RE: Thanks - I wonder why this doesn't short? - Triode_Kingdom 14:01:57 04/02/21 (0)
- RE: Thanks - I wonder why this doesn't short? - trobbins 20:48:45 04/01/21 (0)
- RE: Cathodyne Protection - trobbins 02:49:40 04/01/21 (3)
- RE: Cathodyne Protection - Triode_Kingdom 09:58:50 04/01/21 (2)
- RE: Cathodyne Protection - PakProtector 15:38:01 04/01/21 (1)
- RE: Cathodyne Protection - Triode_Kingdom 15:46:16 04/01/21 (0)
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