RE: Class A2 Tube Currents

Posted by Triode_Kingdom (A) on October 10, 2016 at 14:15:02

In Reply to: RE: Class A2 Tube Currents posted by sonicboom on October 10, 2016 at 09:50:29:

Thanks, I do understand load lines and such. I'm just not sure the extent to which I can trust curves for this particular purpose. Your comments got me thinking about all this from a different angle; I think there's no reason I can't use grid voltage as a monitoring point rather than anode current. If distortion is low, they should follow each other. The only difference is that one lets me stabilize bias voltage, the other stabilizes bias current. Neither is necessarily better, as long as there's an adjustment. The OPA445 is a high voltage opamp that can run directly from my -80V bias supply. So, monitoring the grid itself is probably the simplest approach.

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Topic - Class A2 Tube Currents - Triode_Kingdom 14:34:06 10/09/16 (16)

RE: Class A2 Tube Currents - PakProtector 06:54:14 10/10/16 (13)

of course, Doug is correct... - Jim Dowdy 13:24:54 10/11/16 (0)

RE: Class A2 Tube Currents - Triode_Kingdom 08:30:21 10/10/16 (11)

RE: Class A2 Tube Currents - PakProtector 03:09:30 10/12/16 (2)

RE: Class A2 Tube Currents - Tre' 12:30:54 10/12/16 (1)

RE: Class A2 Tube Currents - PakProtector 09:21:15 10/13/16 (0)

RE: Class A2 Tube Currents - sonicboom 09:50:29 10/10/16 (7)

RE: Class A2 Tube Currents - Triode_Kingdom 14:15:02 10/10/16 (6)

RE: Class A2 Tube Currents - sonicboom 16:11:50 10/10/16 (5)

RE: Class A2 Tube Currents - sonicboom 16:22:30 10/10/16 (4)

RE: Class A2 Tube Currents - Triode_Kingdom 21:33:20 10/10/16 (3)

RE: Class A2 Tube Currents - sonicboom 07:45:48 10/11/16 (2)

RE: Class A2 Tube Currents - Triode_Kingdom 10:15:38 10/11/16 (1)

RE: Class A2 Tube Currents - sonicboom 13:00:48 10/11/16 (0)

RE: Class A2 Tube Currents - Paul Joppa 17:57:43 10/09/16 (1)

RE: Class A2 Tube Currents - Triode_Kingdom 19:54:51 10/09/16 (0)

Follow Ups

RE: Class A2 Tube Currents - Triode_Kingdom 14:15:02 10/10/16 (6)

RE: Class A2 Tube Currents - sonicboom 16:11:50 10/10/16 (5)

RE: Class A2 Tube Currents - sonicboom 16:22:30 10/10/16 (4)

RE: Class A2 Tube Currents - Triode_Kingdom 21:33:20 10/10/16 (3)

RE: Class A2 Tube Currents - sonicboom 07:45:48 10/11/16 (2)

RE: Class A2 Tube Currents - Triode_Kingdom 10:15:38 10/11/16 (1)

RE: Class A2 Tube Currents - sonicboom 13:00:48 10/11/16 (0)

RE: Class A2 Tube Currents

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