09-07-2022, 11:56 AM
It would seem to me that you need the 1.6k and the 1/2mf cap to provide bias to the 47.
By grounding the ct it's the same as grounding the cathode of a indirectly heated tube. And ct on the hv winding is grounded also so there is no - bias voltage develop in the power supply.
The cap and pot connected to the 47's plate maybe a tone control.
By grounding the ct it's the same as grounding the cathode of a indirectly heated tube. And ct on the hv winding is grounded also so there is no - bias voltage develop in the power supply.
The cap and pot connected to the 47's plate maybe a tone control.
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
