11-21-2007, 10:10 PM
I spent a little time researching this, and I would now agree that the capacitor in question must surely be .09 uF, instead of a .05 uF capacitor ( 8 ). I'll have to correct my "late" schematic accordingly.
Originally, as you mentioned previously, there was a 0.18 uF cap in that position. Then a 0.2 uF cap was added in parallel with it. Then the connection between the 6A7 and 78 cathodes was removed, necessitating a separate .05 uF cap and 400 ohm resistor between the 78 cathode and ground.
A .05 uF cap between the 6A7 cathode and ground will work. A .09 uf (0.1 uF) will make a better cathode bypass, however.
Gotta love those Philco running changes...
Originally, as you mentioned previously, there was a 0.18 uF cap in that position. Then a 0.2 uF cap was added in parallel with it. Then the connection between the 6A7 and 78 cathodes was removed, necessitating a separate .05 uF cap and 400 ohm resistor between the 78 cathode and ground.
A .05 uF cap between the 6A7 cathode and ground will work. A .09 uf (0.1 uF) will make a better cathode bypass, however.
Gotta love those Philco running changes...
--
Ron Ramirez
Ferdinand IN
