07-31-2011, 05:50 PM
I've got a better question. What is the resistance of the plate resistor on the 7C6. Should be 220K is it? I'll take a guess and say about 75v.
The plate voltage on the 84 isn't that important as the set is making HV and is close to spec.
B+ is another way of saying high voltage. Goes back to the old days (1920's) when sets used batteries. A battery supplied the filament voltage, B battery supplied the high voltage and the C battery supplied the negative bias voltage for the audio stages. So B+ is a reference to the + side of the high voltage.
Terry
The plate voltage on the 84 isn't that important as the set is making HV and is close to spec.
B+ is another way of saying high voltage. Goes back to the old days (1920's) when sets used batteries. A battery supplied the filament voltage, B battery supplied the high voltage and the C battery supplied the negative bias voltage for the audio stages. So B+ is a reference to the + side of the high voltage.
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
