In Reply to: Re: not all tube datasheet has a +/- on the heater specs though posted by ffrr on July 6, 2006 at 04:07:48:
Hi,Donno about american specifications but european usually have +/-10% for common tubes (ECC83 and one number american ones) and +/-5% for special quality ones (E83CC or four number american ones).
Above those percentages there is usually a 5% tolerance for "line fluctuations".I guess one should keep as close to nominal value as possible anyway.
(Directly heated tubes - depending on wether they are dull or bright emitter ones - is another matter.)
mvh /Pär
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Follow Ups
- Re: not all tube datasheet has a +/- on the heater specs though - Pär 06:30:19 07/06/06 (0)