What's the definition of "warm up" time and how should it be measured?...

Tubes Asylum

Questions about tubes and gear that glows. FAQ

Posted by Steve O (A) on December 26, 2016 at 11:30:40

In Reply to: 5V4 Warm up Time posted by sony6060 on December 26, 2016 at 06:37:13:

...The only definition of warm up time I've ever seen for consumer grade tubes was specific to the heater as applicable to series heater strings. No reference whatsoever to B+ "rise time" of consumer grade rectifiers or conduction within signal / power tubes. OTOH, specs for big industrial / transmitter tubes address the warm up issue indirectly by stating time period filament current (and cooling system) must be "on" prior to application of electrode voltages.

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Follow Ups Full Thread

Topic - 5V4 Warm up Time - sony6060 06:37:13 12/26/16 (13)

What's the definition of "warm up" time and how should it be measured?... - Steve O 11:30:40 12/26/16 (0)

It is easy to check for yourself - DAK 11:23:26 12/26/16 (9)

RE: It is easy to check for yourself - sony6060 11:55:55 12/26/16 (8)

Perhaps you should use a 5ar4? - DAK 15:02:52 12/26/16 (0)

RE: It is easy to check for yourself - Michael Samra 14:44:59 12/26/16 (6)

RE: It is easy to check for yourself - sony6060 16:39:50 12/26/16 (5)

How about this. - Michael Samra 18:05:21 12/26/16 (4)

RE: How about this. - sony6060 18:11:05 12/26/16 (3)

RE: Switches will wear out on you. - DAK 18:21:03 12/26/16 (2)

RE: Switches will wear out on you. - Michael Samra 23:24:28 12/26/16 (0)

RE: Switches will wear out on you. - sony6060 18:55:53 12/26/16 (0)

Here is a thread on DIYaudio where it was covered. - Michael Samra 08:48:10 12/26/16 (0)

It is not a super slow like the 5AR4 - Chip647 08:39:00 12/26/16 (0)

Follow Ups

What's the definition of "warm up" time and how should it be measured?... - Steve O 11:30:40 12/26/16 (0)

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