Regarding W2CQM's question regarding reducing filament voltage: his
transformer is a single unit supplying filament, anode, and
bias/control voltages. If a resistor is put in the primary of the
transformer, it will reduce ALL of the voltages. Let's see, from 6
volts down to 5 volts is about 16%. I wouldn't want to reduce my
anode voltage by 16%, AND screw up the "stiffness" of the anode
supply!
I vote for the low resistance, high wattage series resistor in the
filament line circuit. A couple of good suggestions along those
lines have been made.
However, the only vote that really counts is Ron's! 8>)
73,
George T. Daughters, K6GT
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