1П24Б 1p24b

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1П24Б 1p24b

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ppppenguin

Senior Engineer in Charge

Posts: 7,648
Reputation: 26
Location: London N12

#57

02-02-2021, 07:15 PM

Directly heated valves are a real problem if you want the cathode to sit at other than ground potential. When you look at the high power cathode followers in the Ally Pally "Black Book" you can see the trouble they had to go to in making the filaments sit not just at high DC potential but also with many volts of wideband video.

www.borinsky.co.uk Jeffrey Borinsky www.becg.tv

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Messages In This Thread

1П24Б 1p24b - by Murphyv310 - 18-05-2020, 10:05 AM

RE: 1П24Б 1p24b - by Mike Watterson - 18-05-2020, 11:09 AM

RE: 1П24Б 1p24b - by Murphyv310 - 18-05-2020, 11:31 AM

RE: 1П24Б 1p24b - by valvekits - 18-05-2020, 11:46 AM

RE: 1П24Б 1p24b - by Kalee20 - 11-06-2020, 03:56 PM

RE: 1П24Б 1p24b - by Mike Watterson - 13-06-2020, 07:37 PM

RE: 1П24Б 1p24b - by Kalee20 - 30-06-2020, 12:41 PM

RE: 1П24Б 1p24b - by Mike Watterson - 18-05-2020, 11:52 AM

RE: 1П24Б 1p24b - by Kalee20 - 18-05-2020, 11:55 AM

RE: 1П24Б 1p24b - by Murphyv310 - 19-05-2020, 08:32 PM

RE: 1П24Б 1p24b - by BusyBee - 20-05-2020, 12:34 PM

RE: 1П24Б 1p24b - by Murphyv310 - 09-06-2020, 02:13 PM

RE: 1П24Б 1p24b - by ppppenguin - 09-06-2020, 03:13 PM

RE: 1П24Б 1p24b - by BusyBee - 10-06-2020, 01:02 PM

RE: 1П24Б 1p24b - by Murphyv310 - 10-06-2020, 02:38 PM

RE: 1П24Б 1p24b - by Mike Watterson - 10-06-2020, 03:20 PM

RE: 1П24Б 1p24b - by BusyBee - 11-06-2020, 01:02 PM

RE: 1П24Б 1p24b - by Murphyv310 - 11-06-2020, 02:52 PM

RE: 1П24Б 1p24b - by Murphyv310 - 11-06-2020, 03:34 PM

RE: 1П24Б 1p24b - by valvekits - 12-06-2020, 09:15 AM

RE: 1П24Б 1p24b - by Murphyv310 - 12-06-2020, 11:21 AM

RE: 1П24Б 1p24b - by BusyBee - 12-06-2020, 06:21 PM

RE: 1П24Б 1p24b - by Murphyv310 - 13-06-2020, 08:04 PM

RE: 1П24Б 1p24b - by Nick - 14-06-2020, 09:16 AM

RE: 1П24Б 1p24b - by Murphyv310 - 14-06-2020, 10:24 AM

RE: 1П24Б 1p24b - by Mike Watterson - 14-06-2020, 11:13 AM

RE: 1П24Б 1p24b - by Mike Watterson - 30-06-2020, 01:51 PM

RE: 1П24Б 1p24b - by Mike Watterson - 30-06-2020, 02:03 PM

RE: 1П24Б 1p24b - by Mike Watterson - 30-06-2020, 02:35 PM

RE: 1П24Б 1p24b - by Kalee20 - 30-06-2020, 06:01 PM

RE: 1П24Б 1p24b - by Murphyv310 - 29-07-2020, 09:20 AM

RE: 1П24Б 1p24b - by Mike Watterson - 29-07-2020, 10:56 AM

RE: 1П24Б 1p24b - by Murphyv310 - 29-07-2020, 11:33 AM

RE: 1П24Б 1p24b - by Mike Watterson - 29-07-2020, 12:18 PM

RE: 1П24Б 1p24b - by Murphyv310 - 29-07-2020, 03:26 PM

RE: 1П24Б 1p24b - by Kalee20 - 28-01-2021, 12:42 PM

RE: 1П24Б 1p24b - by Murphyv310 - 28-01-2021, 05:25 PM

RE: 1П24Б 1p24b - by Amie - 28-01-2021, 05:37 PM

RE: 1П24Б 1p24b - by Murphyv310 - 29-01-2021, 11:27 PM

RE: 1П24Б 1p24b - by Kalee20 - 30-01-2021, 03:09 PM

RE: 1П24Б 1p24b - by Murphyv310 - 30-01-2021, 03:18 PM

RE: 1П24Б 1p24b - by Kalee20 - 31-01-2021, 09:46 PM

RE: 1П24Б 1p24b - by Amie - 01-02-2021, 10:33 AM

RE: 1П24Б 1p24b - by Kalee20 - 31-01-2021, 09:49 PM

RE: 1П24Б 1p24b - by Murphyv310 - 31-01-2021, 10:22 PM

RE: 1П24Б 1p24b - by Kalee20 - 01-02-2021, 10:50 AM

RE: 1П24Б 1p24b - by Murphyv310 - 01-02-2021, 10:52 AM

RE: 1П24Б 1p24b - by Kalee20 - 01-02-2021, 11:06 AM

RE: 1П24Б 1p24b - by Murphyv310 - 01-02-2021, 02:54 PM

RE: 1П24Б 1p24b - by Kalee20 - 01-02-2021, 03:50 PM

RE: 1П24Б 1p24b - by Murphyv310 - 01-02-2021, 03:58 PM

RE: 1П24Б 1p24b - by Murphyv310 - 02-02-2021, 12:43 PM

RE: 1П24Б 1p24b - by Kalee20 - 02-02-2021, 12:51 PM

RE: 1П24Б 1p24b - by Murphyv310 - 02-02-2021, 01:00 PM

RE: 1П24Б 1p24b - by Kalee20 - 02-02-2021, 05:56 PM

RE: 1П24Б 1p24b - by BusyBee - 03-02-2021, 02:10 PM

RE: 1П24Б 1p24b - by Murphyv310 - 02-02-2021, 06:28 PM

RE: 1П24Б 1p24b - by ppppenguin - 02-02-2021, 07:15 PM

RE: 1П24Б 1p24b - by Kalee20 - 03-02-2021, 02:50 PM

RE: 1П24Б 1p24b - by Kalee20 - 18-02-2021, 09:38 AM

RE: 1П24Б 1p24b - by Amie - 18-02-2021, 02:22 PM

RE: 1П24Б 1p24b - by Murphyv310 - 18-02-2021, 10:36 PM

RE: 1П24Б 1p24b - by Kalee20 - 19-02-2021, 12:11 AM

RE: 1П24Б 1p24b - by Murphyv310 - 19-02-2021, 08:15 AM

RE: 1П24Б 1p24b - by Amie - 22-03-2021, 08:51 AM

RE: 1П24Б 1p24b - by Kalee20 - 22-03-2021, 03:26 PM

RE: 1П24Б 1p24b - by Murphyv310 - 22-03-2021, 05:26 PM

RE: 1П24Б 1p24b - by Amie - 22-03-2021, 06:07 PM

RE: 1П24Б 1p24b - by Mike Watterson - 15-09-2021, 06:38 PM

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