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Philco Model 20 escessive hum
03-25-2015, 07:47 PM
I thought I was being smart and put a 10mf @450v ecaps in my 20 but it made the bleeder/bias resistor get really HOT. As Modial sez replace the 10mf s with mylars of the proper values as per the schematic. The ecaps cannot take the ripple current .Sooner or later they will short.
Terry
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Messages In This Thread
Philco Model 20 escessive hum - by Tubesforme - 03-25-2015, 03:52 PM
RE: Philco Model 20 escessive hum - by klondike98 - 03-25-2015, 04:17 PM
RE: Philco Model 20 escessive hum - by Mondial - 03-25-2015, 04:34 PM
RE: Philco Model 20 escessive hum - by Warren - 03-25-2015, 06:00 PM
RE: Philco Model 20 escessive hum - by Tubesforme - 03-25-2015, 06:15 PM
RE: Philco Model 20 escessive hum - by Warren - 03-25-2015, 06:24 PM
RE: Philco Model 20 escessive hum - by Mondial - 03-25-2015, 07:02 PM
RE: Philco Model 20 escessive hum - by Tubesforme - 03-25-2015, 09:09 PM
RE: Philco Model 20 escessive hum - by Radioroslyn - 03-25-2015, 07:47 PM
RE: Philco Model 20 escessive hum - by Arran - 03-27-2015, 12:01 AM
RE: Philco Model 20 escessive hum - by Tubesforme - 03-30-2015, 12:11 PM
RE: Philco Model 20 escessive hum - by morzh - 03-27-2015, 08:52 AM
RE: Philco Model 20 escessive hum - by Tubesforme - 03-27-2015, 03:25 PM
RE: Philco Model 20 escessive hum - by Mondial - 03-27-2015, 03:36 PM
RE: Philco Model 20 escessive hum - by morzh - 03-27-2015, 03:51 PM
RE: Philco Model 20 escessive hum - by Radioroslyn - 03-27-2015, 04:32 PM
RE: Philco Model 20 escessive hum - by radiohenry - 03-28-2015, 08:16 AM
RE: Philco Model 20 escessive hum - by morzh - 03-28-2015, 09:02 AM
RE: Philco Model 20 escessive hum - by radiohenry - 03-28-2015, 03:35 PM
RE: Philco Model 20 escessive hum - by klondike98 - 03-28-2015, 07:47 PM
RE: Philco Model 20 escessive hum - by Tubesforme - 03-30-2015, 12:17 PM
RE: Philco Model 20 escessive hum - by radiohenry - 03-28-2015, 09:17 PM
RE: Philco Model 20 escessive hum - by morzh - 03-30-2015, 12:27 PM
RE: Philco Model 20 escessive hum - by Tubesforme - 03-30-2015, 12:37 PM
RE: Philco Model 20 escessive hum - by morzh - 03-30-2015, 12:41 PM
RE: Philco Model 20 escessive hum - by Radioroslyn - 03-30-2015, 12:45 PM
RE: Philco Model 20 escessive hum - by morzh - 03-30-2015, 12:48 PM
RE: Philco Model 20 escessive hum - by codefox1 - 03-30-2015, 02:21 PM
RE: Philco Model 20 escessive hum - by Tubesforme - 03-31-2015, 02:14 PM
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