Philco Model 60B Rebuild

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Philco Model 60B Rebuild

Ron Ramirez
Silent Key

Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana

11-21-2007, 11:10 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...

--
Ron Ramirez
Ferdinand IN

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Philco Model 60B Rebuild - by Guest - 11-14-2007, 10:11 PM

[No subject] - by Carl Travis - 11-15-2007, 01:42 AM

[No subject] - by Guest - 11-15-2007, 02:01 AM

[No subject] - by Ron Ramirez - 11-15-2007, 10:25 PM

[No subject] - by Guest - 11-15-2007, 11:19 PM

[No subject] - by Ron Ramirez - 11-21-2007, 11:10 PM

[No subject] - by Guest - 11-27-2007, 01:40 AM

[No subject] - by Ron Ramirez - 12-15-2007, 12:58 PM

[No subject] - by Ron Ramirez - 12-22-2007, 03:33 PM

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