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RE: Can't ask the circuit designer..

24.27.41.140

Triode_Kingdom

In Reply to: RE: Can't ask the circuit designer.. posted by Freo-1 on August 14, 2023 at 15:00:46

Hmmm, I was part of that discussion you linked. Sorry to hear about the designer. You can't post the two schematics?

Follow Ups:

RE: Can't ask the circuit designer.. - sony6060 08:01:47 08/15/23 (4)
6BL7 looks very linear to me to -20 volts bias. 12SN7 linearity craps out after -10 volts, but very good to -10 volts. Some 6SN7 tubes do not sound that good.
- 6bl7 - Tre' 13:51:01 08/16/23 (0)
  How much idle current? At what angle is your load line?
  
  Tre'
  Have Fun and Enjoy the Music
  "Still Working the Problem"
- RE: Can't ask the circuit designer.. - Tre' 13:42:14 08/16/23 (2)
  Assuming constant current (high load impedance, a horizontal load line) it looks pretty linear to me well beyond -10.
  
  It looks like a 16 volt peak to peak grid signal will drive the plate voltage 162 volt below idle and 162 volts above idle. You can't get any more linear than that.
  
  Sorry, I can't draw a straight line.
  
  Tre'
  Have Fun and Enjoy the Music
  "Still Working the Problem"
  - RE: Can't ask the circuit designer.. - sony6060 02:53:21 08/17/23 (1)
    Tre, on first plate curve what tube is it? No tube is shown on that plate curve like your second plate curve post.
    - RE: Can't ask the circuit designer.. - Tre' 12:24:19 08/18/23 (0)
      6sn7/12sn7
      
      Tre'
      Have Fun and Enjoy the Music
      "Still Working the Problem"

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