10-23-2023, 08:24 AM
Hello bridkarl ,
First all that power resistor helps drop the line voltage to supply the right about filament voltages to the tubes since between the two tubes there is 80 volt filament and our line voltage is roughly 120-125 AC .
That Set really needs a new powercord too plus that Square item with the fins on it is what they use for a rectifier it is what they call Selenium rectifier .
one thing is that they drop more voltage then the modern silicon rectifier so that power resistor R11 will need to be increased to high value .
Sincerely Richard
First all that power resistor helps drop the line voltage to supply the right about filament voltages to the tubes since between the two tubes there is 80 volt filament and our line voltage is roughly 120-125 AC .
That Set really needs a new powercord too plus that Square item with the fins on it is what they use for a rectifier it is what they call Selenium rectifier .
one thing is that they drop more voltage then the modern silicon rectifier so that power resistor R11 will need to be increased to high value .
Sincerely Richard
