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Forum: Theory & Design

  1. what does this input resistor do?

    Started by Randall, 12-03-2017 10:25 PM
    • Replies: 28
    • Views: 898
    12-29-2017, 05:09 AM Go to last post
  2. Jfet matching

    Started by lowell, 12-11-2017 09:35 PM
    • Replies: 17
    • Views: 492
    12-26-2017, 05:24 PM Go to last post
  3. Another guitarpreamp design using an oddball tube

    Started by Alf, 08-28-2013 02:00 PM
    2 Pages
    1 2
    • Replies: 35
    • Views: 4,489
    Alf
    12-20-2017, 06:08 PM Go to last post
  4. About the Dual Terror

    Started by John Fisher, 12-17-2017 02:23 AM
    • Replies: 4
    • Views: 297
    12-20-2017, 02:47 PM Go to last post
    • Replies: 2
    • Views: 267
    12-20-2017, 09:28 AM Go to last post
  5. 1N4007 quandry

    Started by Randall, 12-16-2017 09:33 PM
    • Replies: 28
    • Views: 577
    12-19-2017, 01:03 AM Go to last post
  6. cathode bypass and grid stoppers/ when where and why

    Started by ric, 12-05-2017 01:01 AM
    2 Pages
    1 2
    • Replies: 59
    • Views: 1,539
    12-15-2017, 11:31 AM Go to last post
  7. PT and tube limitations

    Started by Randall, 12-10-2017 05:39 AM
    2 Pages
    1 2
    • Replies: 43
    • Views: 760
    12-13-2017, 06:04 PM Go to last post
  8. Capacitor ESR, how much is too much?

    Started by Randall, 12-09-2017 09:58 PM
    • Replies: 17
    • Views: 529
    12-12-2017, 04:35 PM Go to last post
    • Replies: 34
    • Views: 606
    12-10-2017, 10:32 PM Go to last post
  9. Relay issue

    Started by lowell, 11-29-2017 01:04 AM
    • Replies: 23
    • Views: 578
    12-07-2017, 02:19 AM Go to last post
    • Replies: 24
    • Views: 638
    12-06-2017, 02:43 AM Go to last post
    • Replies: 5
    • Views: 275
    g1
    12-02-2017, 02:27 AM Go to last post
  10. Input Capacitor??

    Started by leadfootdriver, 11-27-2017 09:44 PM
    • Replies: 16
    • Views: 531
    11-29-2017, 04:53 AM Go to last post
  11. OT placement too

    Started by eschertron, 11-10-2017 03:26 AM
    • Replies: 13
    • Views: 652
    ric
    11-26-2017, 04:59 PM Go to last post
  12. How does this Marshall Hi/Lo power switch work?

    Started by Randall, 10-19-2017 04:37 AM
    • Replies: 20
    • Views: 875
    11-23-2017, 06:29 PM Go to last post
  13. JJ 6V6s spice model

    Started by marmax, 11-05-2017 12:34 PM
    • Replies: 10
    • Views: 536
    11-19-2017, 05:13 AM Go to last post
  14. Interstage transformer

    Started by mozz, 11-19-2017 02:00 AM
    • Replies: 4
    • Views: 275
    11-19-2017, 04:20 AM Go to last post
  15. Choosig resistors thoughts anyone

    Started by miltown, 11-17-2017 03:26 AM
    • Replies: 14
    • Views: 542
    11-19-2017, 12:29 AM Go to last post
  16. Where does the gain stage end??

    Started by nsubulysses, 11-17-2017 02:09 AM
    • Replies: 2
    • Views: 317
    11-17-2017, 08:07 AM Go to last post
    • Replies: 12
    • Views: 499
    11-14-2017, 10:52 PM Go to last post
  17. ZVS boost converter for tube PSU?

    Started by Zozobra, 01-23-2017 05:05 PM
    • Replies: 7
    • Views: 814
    11-12-2017, 08:36 PM Go to last post
  18. DIY attenuator

    Started by lowell, 10-30-2017 06:01 PM
    • Replies: 19
    • Views: 843
    11-10-2017, 06:13 PM Go to last post
  19. Mesa Dual Rectifier PSU Film cap

    Started by hylaphone, 11-08-2017 07:27 PM
    • Replies: 3
    • Views: 352
    11-09-2017, 10:05 PM Go to last post
    • Replies: 40
    • Views: 1,435
    11-06-2017, 07:05 PM Go to last post
  20. EL84 PP Class B power stage

    Started by bea, 11-05-2017 06:52 PM
    • Replies: 4
    • Views: 354
    bea
    11-06-2017, 03:14 PM Go to last post
  21. OT arrangement on chassis

    Started by nsubulysses, 10-20-2017 12:13 AM
    • Replies: 9
    • Views: 566
    11-05-2017, 06:09 AM Go to last post
    • Replies: 4
    • Views: 453
    11-03-2017, 11:32 AM Go to last post

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