Quote:
Originally Posted by winston_1
A diode in series with the heater chain does not give an RMS voltage of 120v, it is 170v, so the heaters will be overloaded.
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Ooops! I did this a long time ago and I am supposed to be working. It needs a series resistor...
Even with this, moving the field coil may still have reduced the overall heat dissipation in the box? but a capacitor dropper for the heater chain with the field coil modification might be better.