09-13-2022, 06:32 PM
No because the 24A's have cathodes and so any bias voltage applied to the filament is isolate from the control grid. The 47's are directly heated (no cathode) so any bias voltage applied to ct of the filament winding does effect the grid.
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
