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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: thanks guys, but this is a little different......... posted by radiance on December 4, 2006 at 21:55:31:
The 5V4, being an indirectly heated tube, will take about 15 secs to heat up and start conducting. that should be enough for the other tubes, without bothering to delay it.However, if you really do want to delay B+ even further, then your method of switching the heater of the rectifier would be a good one, because it would cause the B+ to rise slowly and cause less stress to capacitors in your smoothing filter. Just don't forget that the cathode is strapped to the heater (at pin 8), so your relay contacts are going to be at the B+ voltage once the tube is warmed up.
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Follow Ups
- Re: thanks guys, but this is a little different......... - Ray Moth 05:58:41 12/05/06 (7)
- Thanks, Ray, I didn't realize the rectifier tube.... - radiance 11:23:49 12/05/06 (6)
- 5V4 vs 5AR4 and cathode stripping... - Steve O 18:42:52 12/05/06 (0)
- I didn't read the whole post but.... - Russ57 12:00:46 12/05/06 (4)
- Cathode stripping - an urban legend? - Ray Moth 19:04:36 12/05/06 (3)
- Re: Cathode stripping - an urban legend? - radiance 19:31:57 12/05/06 (2)
- It has long since been settled - Russ57 09:55:17 12/06/06 (1)
- OK, if that's true, then you're right. First time I've heard it. (nt) - radiance 10:01:53 12/06/06 (0)