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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: is it ok to run 5V-rated heaters at 4.7V? thanks (nt) posted by jarthel on July 25, 2006 at 18:27:43:
The tube will have marginally less emission than at specified voltage but there should be enough spare capacity that it is not a problem. Some designers deliberately do this to prolong tube life - for example David Berning in his EA-230 amplifier ran the heaters at 5.7 V rather than 6.3 V for the 12AT7, 6SN7 and 6JN6 tubes.
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Follow Ups
- Short answer, yes. - JimL 19:45:46 07/25/06 (0)
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