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Using a choke input power supply with a direct filament rectifier tube, the rectifier produces voltage while the sudio power tubes are warming up. It sores to high values above 500 volts before the power tubes conduct and lowers that voltage to 300 volts. How high can a tube voltage be during warm up? My tubes are rated at 315 volts plate. Nothing regarding this is on the internet.
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Topic - Max Tube voltage during warm up - sony6060 07:40:32 06/3/21 (34)
- RE: Max Tube voltage during warm up - JSTRM 12:55:45 06/29/21 (0)
- RE: Max Tube voltage during warm up - Triode_Kingdom 09:27:12 06/5/21 (18)
- All my builds utilize two switchs wired so B+ won't come on until filament is turned on first. End of problem. - Cleantimestream 13:48:08 06/6/21 (17)
- RE: All my builds utilize two switchs wired so B+ won't come on until filament is turned on first. End of problem. - Tre' 20:09:26 06/7/21 (9)
- RE: All my builds utilize two switchs wired so B+ won't come on until filament is turned on first. End of problem. - Cleantimestream 22:16:32 06/7/21 (8)
- RE: All my builds utilize two switchs wired so B+ won't come on until filament is turned on first. End of problem. - 91derlust 01:10:56 06/10/21 (2)
- RE: All my builds utilize two switchs wired so B+ won't come on until filament is turned on first. End of problem. - Cleantimestream 12:58:06 06/10/21 (1)
- Thanks for the info C'stream. Nt. - 91derlust 13:40:22 06/10/21 (0)
- RE: All my builds utilize two switchs wired so B+ won't come on until filament is turned on first. End of problem. - Tre' 15:58:47 06/8/21 (4)
- RE: All my builds utilize two switchs wired so B+ won't come on until filament is turned on first. End of problem. - Cleantimestream 15:29:20 06/9/21 (0)
- RE: All my builds utilize two switchs wired so B+ won't come on until filament is turned on first. End of problem. - Cleantimestream 13:21:39 06/9/21 (1)
- Got it. Thanks. nt - Tre' 21:24:07 06/10/21 (0)
- RE: All my builds utilize two switchs wired so B+ won't come on until filament is turned on first. End of problem. - Triode_Kingdom 10:22:33 06/9/21 (0)
- Two switches - Triode_Kingdom 23:55:46 06/6/21 (6)
- RE: Two switches - Cleantimestream 15:05:10 06/9/21 (4)
- RE: Two switches - Triode_Kingdom 09:28:00 06/11/21 (3)
- RE: Two switches - Cleantimestream 15:27:34 06/11/21 (2)
- RE: Two switches - Triode_Kingdom 18:21:15 06/11/21 (1)
- RE: Two switches - Cleantimestream 19:11:25 06/11/21 (0)
- RE: Two switches - Cleantimestream 13:59:41 06/7/21 (0)
- RE: Max Tube voltage during warm up - AmadeusMozart 20:36:01 06/3/21 (8)
- RE: Max Tube voltage during warm up - sony6060 20:43:46 06/3/21 (7)
- RE: Max Tube voltage during warm up - AmadeusMozart 01:08:19 06/4/21 (6)
- Power tube preconditioning - Ralph 13:17:13 06/4/21 (5)
- There is no way I am going to set up a 3-day cathode poisoning event - PakProtector 05:59:11 06/5/21 (3)
- RE: There is no way I am going to set up a 3-day cathode poisoning event - AmadeusMozart 15:04:25 06/6/21 (0)
- LOL! - Ralph 12:13:12 06/5/21 (1)
- And a mercury vapor one as well... - Ivan303 12:27:10 06/5/21 (0)
- RE: Power tube preconditioning - AmadeusMozart 16:55:25 06/4/21 (0)
- RE: Don't worry about it - Ralph 09:35:08 06/3/21 (4)
- RE: Don't worry about it - AmadeusMozart 17:09:15 06/13/21 (3)
- Usually when a tube is gassy - Ralph 09:59:59 06/14/21 (2)
- RE: Usually when a tube is gassy - AmadeusMozart 22:54:24 06/14/21 (1)
- I'm a fan of preconditioning power tubes from way back - Ralph 08:09:52 06/15/21 (0)