This is the same as saying the emission life is related to plate current.
I think it is the filament temperature that determines the emission life and
that is no different for DC or AC.
73
Bill wa4lav
At 11:52 PM 10/31/00 -0500, you wrote:
>A DC filament has a varying grid to filament voltage along its length
>and so has uneven cathode to plate current along its length. Thus
>in theory, one end runs out of emission life faster than the other.
William L. Fuqua III , P.E. EE
Department of Physics and Astronomy
CP 177 Chemistry Physics Building
University of KY
Lexington, KY 40506-0055
Phone 859 257-4155
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