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Philco 90 with Twin 47 Tubes in PP
Ron Ramirez
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Posts: 13,776
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City: Ferdinand State, Province, Country: Indiana
#6

05-05-2014, 04:51 PM
Addendum:

I just noticed where you mentioned the 56K is in parallel with an 8.5K resistor. This would result in a net resistance of roughly 7380 ohms, close enough to allow the cathode circuit of the 24 tube to oscillate properly - with the 700 pF cap which must be in place as well.
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Ron Ramirez
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Messages In This Thread
Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 12:00 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 03:39 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Ron Ramirez - 05-05-2014, 04:51 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 04:55 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-05-2014, 06:23 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-05-2014, 07:05 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 07:45 PM
RE: Philco 90 with Twin 47 Tubes in PP - by gregb - 05-05-2014, 09:45 PM
RE: Philco 90 with Twin 47 Tubes in PP - by gregb - 05-05-2014, 09:49 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 10:37 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-07-2014, 02:21 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-07-2014, 11:48 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-14-2014, 11:15 AM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-14-2014, 02:11 PM
RE: Philco 90 with Twin 47 Tubes in PP - by gregb - 05-14-2014, 04:22 PM
RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-15-2014, 01:26 PM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-16-2014, 01:09 AM
RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-17-2014, 02:40 AM



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  1. The PHILCO Phorum
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