I have just reduced my filament voltage on the 3-500Z's in my Linear from
5.75 volts to 5.00 volts, added 40 ohms in the primary of the transformer,
with no load or drive. If I drive the amp to 600ma, for example, what is an
acceptable voltage drop that could I expect and the ramifications of such a
drop. The secondary filament leads are only six inches long and appear to
be #10 or #8 stranded wire. The transformer previously supplied the current
without getting warm. The reason for the high filament voltage is due to
the 248 VAC furnished by the local electric utility. Helps my High Voltage
Power supply though!!! I would appreciate any and all comments, theoretical
or experience.
Monty/WB5GLB
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