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Forum: Theory & Design

  1. Powertube warmup..

    Started by leadfootdriver, 10-10-2018 09:31 PM
    • Replies: 10
    • Views: 673
    10-30-2018, 01:41 AM Go to last post
  2. Mystery Circuit of the Day #1

    Started by nickb, 10-23-2018 09:58 PM
    • Replies: 8
    • Views: 742
    10-25-2018, 04:31 PM Go to last post
    • Replies: 6
    • Views: 522
    10-24-2018, 06:16 PM Go to last post
  3. Channel Switching Advice

    Started by Ninevolt, 10-20-2018 11:38 PM
    • Replies: 10
    • Views: 627
    10-23-2018, 07:49 AM Go to last post
    • Replies: 34
    • Views: 1,676
    10-23-2018, 07:30 AM Go to last post
  4. Pulling two output tubes in a Tweed Twin

    Started by Randall, 10-05-2018 11:59 PM
    • Replies: 22
    • Views: 1,289
    10-16-2018, 02:51 PM Go to last post
  5. Hartke Model 3500 MOSFET power supply

    Started by Axtman, 10-12-2018 07:17 PM
    • Replies: 1
    • Views: 331
    10-13-2018, 12:59 AM Go to last post
  6. dim bulb tester light bulb resistance

    Started by Randall, 10-08-2018 03:44 AM
    • Replies: 5
    • Views: 563
    10-09-2018, 02:29 PM Go to last post
  7. seires / parallel wattage question

    Started by Randall, 09-27-2018 10:53 PM
    2 Pages
    1 2
    • Replies: 40
    • Views: 1,802
    10-04-2018, 05:22 AM Go to last post
  8. Great tool but I need a little info!

    Started by tubedood, 10-02-2018 06:23 AM
    • Replies: 6
    • Views: 653
    10-02-2018, 11:02 PM Go to last post
  9. Tube/JFET hybrid cascode?

    Started by SoulFetish, 09-27-2018 07:40 AM
    • Replies: 2
    • Views: 499
    10-02-2018, 07:21 AM Go to last post
  10. Tube rectifier B+ differences

    Started by tubedood, 07-30-2018 04:21 PM
    • Replies: 34
    • Views: 2,045
    09-29-2018, 03:30 AM Go to last post
  11. How close to capacitor voltage rating?

    Started by Axtman, 09-07-2018 07:12 PM
    • Replies: 20
    • Views: 1,333
    09-28-2018, 05:58 PM Go to last post
    • Replies: 34
    • Views: 1,693
    09-28-2018, 08:56 AM Go to last post
    • Replies: 13
    • Views: 788
    09-26-2018, 11:31 AM Go to last post
  12. What does this thingy do?

    Started by Axtman, 09-25-2018 06:57 PM
    • Replies: 3
    • Views: 443
    09-25-2018, 11:42 PM Go to last post
  13. Another Power Transformer Question!

    Started by tubedood, 09-25-2018 09:01 PM
    • Replies: 3
    • Views: 379
    09-25-2018, 09:50 PM Go to last post
  14. Dagnall OT no wiring info

    Started by Randall, 09-24-2018 08:05 PM
    • Replies: 3
    • Views: 419
    09-24-2018, 09:28 PM Go to last post
  15. THD Univalve questions

    Started by mikepukmel, 09-20-2018 03:47 AM
    • Replies: 12
    • Views: 852
    09-20-2018, 08:51 PM Go to last post
    • Replies: 18
    • Views: 1,273
    09-19-2018, 09:10 PM Go to last post
  16. Couple other transformer questions

    Started by nsubulysses, 09-12-2018 06:25 PM
    • Replies: 8
    • Views: 707
    09-14-2018, 08:23 PM Go to last post
  17. Trust this transformer any more or less?

    Started by nsubulysses, 09-05-2018 05:29 PM
    • Replies: 27
    • Views: 1,560
    09-13-2018, 02:09 AM Go to last post
  18. Input jack lock?

    Started by Axtman, 09-12-2018 09:16 PM
    • Replies: 2
    • Views: 367
    09-13-2018, 12:04 AM Go to last post
  19. Vibration mounting a socket with a tube shield

    Started by tubedood, 08-13-2018 08:08 PM
    • Replies: 15
    • Views: 1,181
    09-12-2018, 03:56 AM Go to last post
  20. Bias pcb

    Started by Valvehead, 09-08-2018 06:04 PM
    • Replies: 8
    • Views: 571
    09-10-2018, 10:24 PM Go to last post
  21. 70 V Line Matching Transformers

    Started by Bloomfield, 09-06-2018 07:23 PM
    • Replies: 11
    • Views: 725
    09-08-2018, 08:39 PM Go to last post
  22. Using Fender Twin OT with (2) 6L6's

    Started by clinkous, 09-07-2018 07:30 PM
    • Replies: 3
    • Views: 445
    09-07-2018, 08:50 PM Go to last post

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