Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: RE: Apply this once and you're done. posted by MikeWI on June 27, 2016 at 15:31:44:
I own a Fluke 87V meter that has a temperature probe option. I have measured the temperature on the surface of the glass envelope of a huge type 7241 output tube pulling about 0.5 amps of current at steady state in my OTL amplifiers. The glass reaches a little more than 100 degrees C max, which is plenty hot enough to overheat my living room after several hours with a total of 8 tubes running in twin monoblocks. Thus I wonder whether anyone should worry about what happens at 250 degrees C on a tube pin; the pin is very unlikely ever to get as hot as does the glass envelope of any tube.250 degrees C = 482 degrees F. You could broil a steak at that temp.
Edits: 06/28/16
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Follow Ups
- 250 degrees C! - Lew 07:44:40 06/28/16 (6)
- Right on, Lew. [nt] - alan m. kafton 18:01:27 06/28/16 (5)
- Of course, one could boil water for tea on the surface of a 7241 glass envelope. - Lew 07:38:35 06/30/16 (4)
- RE: Of course, one could boil water for tea on the surface of a 7241 glass envelope. - ipdtt 16:59:07 06/30/16 (3)
- I use it too! (Walker SST) - Lew 08:29:27 07/01/16 (2)
- RE: I use it too! (Walker SST) - MannyE 15:44:13 07/05/16 (1)
- RE: I use it too! (Walker SST) - Lew 18:12:35 07/05/16 (0)