Philco 90 with Twin 47 Tubes in PP

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Philco 90 with Twin 47 Tubes in PP

Ron Ramirez
Silent Key

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

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
Ferdinand IN

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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 TA Forbes - 05-05-2014, 03:39 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 04:02 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Ron Ramirez - 05-05-2014, 04:46 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 Ron Ramirez - 05-05-2014, 05:01 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 05:17 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 joybird - 05-05-2014, 06:42 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 joybird - 05-05-2014, 07:30 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 joybird - 05-06-2014, 04:24 AM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-07-2014, 11:12 AM

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 joybird - 05-13-2014, 02:53 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-14-2014, 10:57 AM

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 joybird - 05-14-2014, 01:23 PM

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 joybird - 05-15-2014, 01:18 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 joybird - 05-15-2014, 01:33 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-15-2014, 05:07 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Warren - 05-15-2014, 07:46 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 joybird - 05-16-2014, 06:28 AM

RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-17-2014, 02:40 AM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-20-2014, 07:40 AM

RE: Philco 90 with Twin 47 Tubes in PP - by TA Forbes - 05-20-2014, 09:42 AM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-28-2014, 06:38 AM

RE: Philco 90 with Twin 47 Tubes in PP - by TA Forbes - 05-28-2014, 10:29 AM

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