>In a message dated 3/25/2003 5:28:33 PM Pacific Standard Time, 2@vc.net
>writes:
>
>> Do Emtron amplifiers use a filament-type tube or a heater-type tube?
>> I know of no heater-type tube whose mfg recommends limiting inrush
>> curent.
>>
>
>So does that mean the big Russian GS-35b Triodes do not need inrush current
>limiting? >They are shown as having a cathode.
** Correct. Some filament-type tubes have an inrush current-limit
spec., but heater- type tubes apparently don't. The reason is probably
because filament-type tubes have a high cold-R/hot-R ratio, typically
1:8.3
- R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
www.vcnet.com/measures.
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