>
>I have been reading the comments on filament voltage with interest. Would it
>be considered good practice to put a small variac in the primary circuit of
>the filament transformer, supplying a transmitting tube, and run the applied
>voltage up slowly, thus allowing the filament current to be more controlled,
>during that destructive switch on surge......advice gratefully
>accepted....best wishes, John. G3JVC.
>
Eimac recommends using this procedure with its 8973 tetrode. The
filament is 18.5v at 650a.
cheers, John
- R. L. Measures, 805.386.3734, www.vcnet.com/measures.
end
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