09-11-2014, 09:37 AM
Ron, without the field coil, you would not need the bleeder to provide the minimum field current. You would simply remove the bleeder resistor and replace the field coil with a series resistance of sufficient value to provide 200 to 225 volts for the tubes other than the output stage.
This would be similar to what Philco did in the 38-116, where the output tubes run at full B+ supply voltage and the other tubes operate at lower plate voltage supplied through series dropping resistors.
This would be similar to what Philco did in the 38-116, where the output tubes run at full B+ supply voltage and the other tubes operate at lower plate voltage supplied through series dropping resistors.