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"Filament current is 1.25 amps, so my bias voltage s/b (4 0hms)(1.25 amps)=5v."
Wouldn't that be 1.35 amps? 1.25 amps for the filament and .01 amps for the plate current?
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"Still Working the Problem"
Uh, not really, 1.25A plus 10 ma(.01A) is 1.26A. Plate to cathode current usually has a negligible effect on calculations.
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