[AMRadio] Transformers Revised

Rick Brashear rickbras at airmail.net
Tue Feb 20 10:22:37 EST 2007

I sure do appreciate your advice and insight.  I agree completely about 
the monitoring of the secondary instead of the primary filament 
voltage.  I have no idea what GE was thinking other than to save a buck 
or two by using one volt meter to set the filament on all the tubes 
instead of individual ones.  It's just not good engineering in my book, 
but it's what they did and I guess I'll stick with it.

Thanks again,

gkb wrote:

>    I know you would like to keep it original but even with today's
>transformers at 120 volts, primary, the secondary still remains the same for
>filament voltage. Another thing I don't understand at this point, why
>monitor filament primary voltage? I would think to monitor the true filament
>voltage is more critical.

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