08-30-2018, 11:26 PM
Such a nice numeric tube line up. I would think that 20K is a good value for the pot. At 200K all of the adjustment is going to be a small portion at one end.
Yeah you don't want to use a resistor to drop the line to the heater voltage. Has to drop abt 100v@ 300ma = 30w. That's the same heat from four 50L6's. Cap is the way to go. 6.8 mf should do it for you.
Yeah you don't want to use a resistor to drop the line to the heater voltage. Has to drop abt 100v@ 300ma = 30w. That's the same heat from four 50L6's. Cap is the way to go. 6.8 mf should do it for you.
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 "[-]")
