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Forum: Theory & Design

  1. MOV's AND flyback diodes?

    Started by Gaz, Yesterday 09:03 PM
    • Replies: 3
    • Views: 94
    Today, 08:15 AM Go to last post
  2. How much extra capacitance can I use?

    Started by Axtman, Yesterday 10:25 PM
    • Replies: 5
    • Views: 107
    Today, 02:01 AM Go to last post
  3. Amp size and power cord gauge

    Started by Randall, 02-19-2019 09:29 PM
    • Replies: 7
    • Views: 183
    Yesterday, 07:11 PM Go to last post
  4. Phaez gives away EL84 design

    Started by tedmich, 04-29-2010 05:00 PM
    2 Pages
    1 2
    • Replies: 62
    • Views: 21,334
    02-17-2019, 08:35 PM Go to last post
  5. 12at7 question

    Started by catalin gramada, 02-12-2019 12:50 PM
    • Replies: 4
    • Views: 305
    02-17-2019, 12:05 PM Go to last post
  6. power supply cap values

    Started by Randall, 02-14-2019 01:36 AM
    • Replies: 10
    • Views: 297
    02-15-2019, 12:22 AM Go to last post
  7. Need ideas for a limiter circuit

    Started by Gaz, 01-03-2019 11:21 AM
    3 Pages
    1 2 3
    • Replies: 72
    • Views: 2,196
    02-12-2019, 11:33 AM Go to last post
  8. LTSpice and power measurements

    Started by bea, 01-28-2019 02:27 PM
    • Replies: 21
    • Views: 494
    02-08-2019, 01:43 AM Go to last post
  9. Fluctuating waveform ~

    Started by Gaz, 02-01-2019 11:03 PM
    • Replies: 22
    • Views: 680
    02-06-2019, 10:54 PM Go to last post
  10. Chinese EL34 problem

    Started by Malcolm Irving, 02-05-2019 01:36 PM
    • Replies: 4
    • Views: 246
    02-05-2019, 06:47 PM Go to last post
  11. Tube heater question/idea

    Started by KCman, 01-31-2019 04:40 PM
    • Replies: 22
    • Views: 473
    02-02-2019, 01:31 AM Go to last post
  12. Shared cathode resistor question

    Started by catalin gramada, 01-30-2019 12:36 PM
    • Replies: 6
    • Views: 246
    01-30-2019, 07:06 PM Go to last post
    • Replies: 20
    • Views: 508
    01-28-2019, 02:22 PM Go to last post
  13. Toward a GU50 power stage

    Started by bea, 01-28-2019 03:27 AM
    • Replies: 0
    • Views: 148
    01-28-2019, 03:27 AM Go to last post
  14. Understanding "grid drive" to drive, 2, 4, 6 power tubes

    Started by nsubulysses, 12-31-2018 02:26 AM
    5 Pages
    1 2 3 ... 5
    • Replies: 167
    • Views: 4,079
    01-28-2019, 02:01 AM Go to last post
  15. power tube quad confusion

    Started by Randall, 01-21-2019 11:11 PM
    • Replies: 3
    • Views: 231
    01-22-2019, 01:11 AM Go to last post
  16. OK to run a 5V4GA recto in a 6G9 Tremolux?

    Started by Randall, 01-09-2019 03:04 AM
    • Replies: 18
    • Views: 606
    01-20-2019, 08:27 PM Go to last post
  17. Virtual center tap OT?

    Started by Satamax, 01-17-2019 03:13 PM
    • Replies: 13
    • Views: 429
    01-18-2019, 04:13 PM Go to last post
  18. Marshall caps

    Started by Valvehead, 01-18-2019 04:21 AM
    • Replies: 6
    • Views: 183
    01-18-2019, 03:10 PM Go to last post
  19. Designing for AB2

    Started by Smitty, 06-25-2006 04:36 PM
    2 Pages
    1 2
    • Replies: 53
    • Views: 11,645
    01-18-2019, 02:32 PM Go to last post
  20. AAA battery question

    Started by Randall, 01-17-2019 05:05 AM
    • Replies: 7
    • Views: 349
    01-18-2019, 02:34 AM Go to last post
  21. DC coupled C.F. question

    Started by catalin gramada, 01-12-2019 07:38 PM
    2 Pages
    1 2
    • Replies: 43
    • Views: 986
    01-16-2019, 07:40 PM Go to last post
  22. Switching scheme with muting and LEDs

    Started by frusciante89, 11-25-2018 05:44 PM
    2 Pages
    1 2
    • Replies: 42
    • Views: 1,667
    01-12-2019, 07:43 PM Go to last post
  23. Grid Current Emulation at Input to Power Amp

    Started by loudthud, 01-10-2019 08:57 AM
    • Replies: 11
    • Views: 478
    01-11-2019, 08:53 PM Go to last post
  24. D.i.y. Bias Probe

    Started by chocopower, 11-28-2007 11:39 PM
    • Replies: 28
    • Views: 30,205
    01-05-2019, 04:12 AM Go to last post

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