Service Notification

EDAboard.com Scheduled Maintenance for 6/4/2020

Starting at 12:00pm EST Thursday June 4th EDABoard will be in maintenance mode and be unavailable. The website is being migrated to a new web server and the software is being upgraded. With the large volume of data & images to move, migration is expected to last for 8 - 10 hours. When started the forum will go into maintenance mode and no posts, edits or registrations can be made.
  1. Announcement:
    Forum rules & policies (quick reference)
    alexan_e (Administrator)
    7th August 2014
    Views:
    131,721
Page 1 of 4 1 2 3 ... LastLast
Threads 1 to 30 of 91

Forum: Tubes and Retro

Ideas and designs keeping the classic electronics alive.

  1. Sticky Thread Sticky: Read before you post requests or upload e-books

    Started by pranam77, 25th November 2009 16:07
    • Replies: 0
    • Views: 19,765
    pranam77
    25th November 2009, 16:07 Go to last post

  1. Who has experience using tube...

    Started by TelegraphAudio, 4th February 2020 12:10
    2 Attachment(s)
    • Replies: 11
    • Views: 7,563
    TelegraphAudio
    20th March 2020, 15:53 Go to last post

  2. How does one learn to read a schematic? (Marshall tube guitar amp)

    Started by riffwraith, 24th August 2019 03:57
    6 Attachment(s)
    • Replies: 17
    • Views: 9,838
    TelegraphAudio
    9th February 2020, 12:30 Go to last post

  3. Closed: Four band audio bargraph display, using IN-13 Nixie linear bars.

    Started by schmitt trigger, 19th November 2019 02:15
    • Replies: 0
    • Views: 3,830
    schmitt trigger
    19th November 2019, 02:15 Go to last post

  4. Closed: Schematic for an old philco TV

    Started by PraticalTelevision00, 28th August 2019 14:17
    • Replies: 0
    • Views: 2,595
    PraticalTelevision00
    28th August 2019, 14:17 Go to last post

  5. Closed: Series connection of potentiometer

    Started by ratan22, 24th August 2019 18:00
    2 Attachment(s)
    • Replies: 12
    • Views: 3,880
    KlausST
    25th August 2019, 17:44 Go to last post

  6. Closed: Tube filaments on 230v? What do I need to know?

    Started by neazoi, 13th May 2019 23:36
    2 Pages •
    1 2
    • Replies: 22
    • Views: 8,532
    FvM
    31st July 2019, 17:13 Go to last post

  7. Closed: High voltage (60kv) insulator material and glue

    Started by steve_rb, 1st July 2019 07:35
    4 Attachment(s)
    • Replies: 4
    • Views: 6,327
    FvM
    1st July 2019, 18:59 Go to last post

  8. Closed: Grid leak VS Diode detection in regen set, advantages disadvantages

    Started by neazoi, 19th June 2019 11:20
    1 Attachment(s)
    • Replies: 5
    • Views: 3,291
    betwixt
    20th June 2019, 15:32 Go to last post

  9. Closed: Crt tv - click sound turn off and i start again

    Started by juanmotta, 4th June 2019 13:07
    • Replies: 8
    • Views: 4,039
    juanmotta
    6th June 2019, 01:51 Go to last post

  10. Closed: Looking for older LED's or Solid State Lamps

    Started by brightlightdude, 1st March 2019 23:17
    3 Attachment(s)
    • Replies: 2
    • Views: 3,462
    schmitt trigger
    13th May 2019, 15:29 Go to last post

  11. Closed: Help Needed to repair a CRT + pictures and info about the problem.

    Started by siXence, 4th March 2019 03:48
    2 Pages •
    1 2
    7 Attachment(s)
    • Replies: 22
    • Views: 9,088
    siXence
    24th March 2019, 18:16 Go to last post

  12. Closed: Having fun with discrete transistors

    Started by schmitt trigger, 11th January 2019 17:44
    3 Attachment(s)
    • Replies: 7
    • Views: 6,367
    betwixt
    15th January 2019, 10:44 Go to last post

  13. Closed: Nostalgia thread, did you work with Selenium rectifiers?

    Started by schmitt trigger, 11th October 2018 23:28
    1 Attachment(s)
    • Replies: 6
    • Views: 8,227
    betwixt
    12th October 2018, 17:10 Go to last post

  14. Closed: What is the differences between these FBT models?!!

    Started by freefall80, 7th September 2018 00:33
    • Replies: 0
    • Views: 4,385
    freefall80
    7th September 2018, 00:33 Go to last post

  15. Closed: Flyback replacement advice for LG 29" crt TV

    Started by freefall80, 22nd August 2018 05:23
    • Replies: 6
    • Views: 6,173
    freefall80
    22nd August 2018, 16:21 Go to last post

  16. Closed: transform simple low voltage OTL tube amp into lower impedance by paralleling tubes

    Started by neazoi, 19th June 2018 14:53
    • Replies: 2
    • Views: 6,930
    betwixt
    19th June 2018, 19:19 Go to last post

  17. Closed: German V1 and V2 control systems and electronics discussion

    Started by schmitt trigger, 12th January 2018 15:34
    • Replies: 7
    • Views: 13,062
    Nik_2213
    12th June 2018, 20:24 Go to last post

  18. Closed: Beyond Dekatrons: Beam Deflection counter tube

    Started by schmitt trigger, 22nd April 2018 23:33
    • Replies: 0
    • Views: 5,618
    schmitt trigger
    22nd April 2018, 23:33 Go to last post

  19. Closed: ИH-9 NIXIE BARGRAPH TUBE Russian language datasheet (Can anyone translate?)

    Started by schmitt trigger, 12th June 2017 20:44
    2 Attachment(s)
    • Replies: 11
    • Views: 56,825
    c_mitra
    1st November 2017, 17:43 Go to last post

  20. Moved: Russian IC DATASHEET

    Started by rsm9692, 12th August 2017 12:23
    •  
    •  

  21. Closed: Help to identify devices by photos

    Started by fade2black, 7th April 2017 12:30
    • Replies: 4
    • Views: 25,180
    schmitt trigger
    5th June 2017, 14:16 Go to last post

  22. Closed: Looking for RCA 225807 CRT datasheet and aplication circuit

    Started by TomWJT, 20th February 2017 17:46
    • Replies: 1
    • Views: 8,359
    TomWJT
    22nd February 2017, 14:41 Go to last post

  23. Closed: Playing with Nixies and Dekatrons

    Started by schmitt trigger, 3rd February 2017 15:10
    • Replies: 7
    • Views: 10,514
    schmitt trigger
    22nd February 2017, 04:50 Go to last post

  24. Closed: Using triode tubes as diode tubes for rectification

    Started by neazoi, 15th February 2017 13:58
    2 Attachment(s)
    • Replies: 5
    • Views: 11,018
    schmitt trigger
    16th February 2017, 21:46 Go to last post

  25. Closed: Xenon flash tube triggers from atmopheric radiation?

    Started by treez, 3rd December 2016 20:03
    • Replies: 5
    • Views: 9,846
    pjmelect
    5th December 2016, 03:03 Go to last post

  26. Closed: What is this in CRT Vacuum tube?

    Started by RETGT, 3rd December 2016 11:17
    2 Attachment(s)
    • Replies: 3
    • Views: 8,805
    schmitt trigger
    4th December 2016, 18:08 Go to last post

  27. Closed: PL504 instead of 6dq6 in transmitter

    Started by neazoi, 25th October 2016 09:35
    1 Attachment(s)
    • Replies: 2
    • Views: 8,894
    FvM
    25th October 2016, 10:29 Go to last post

  28. Closed: Power tetrode/pentode tube with internal triode?

    Started by neazoi, 3rd October 2016 08:01
    • Replies: 8
    • Views: 11,123
    betwixt
    5th October 2016, 09:04 Go to last post

  29. Closed: Beginner question about experimenting with tubes

    Started by I14R10, 14th August 2016 21:26
    2 Pages •
    1 2
    • Replies: 38
    • Views: 18,608
    c_mitra
    8th September 2016, 06:03 Go to last post

  30. Closed: Vintage Elka Reverb III

    Started by waltom, 5th July 2016 16:37
    10 Attachment(s)
    • Replies: 11
    • Views: 12,873
    Satchmoeddie
    10th July 2016, 02:38 Go to last post
Powered by vBulletin™
Copyright © 2017 vBulletin Solutions, Inc. All rights reserved.