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model 20 hum (detector circuit?)
Tubesforme
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Posts: 107
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Joined: Feb 2015
City: Los Angeles, CA
#47

10-30-2015, 01:28 PM
(10-29-2015, 10:36 PM)LASJayhawk Wrote:  What is the screen grid voltage on the 24 detector with the volume all the way up and all the way down with no signal?
In LA, where I am there is always some signal even without an antenna attached. Source of the screen voltage is point F and it measures 19V using the PT CT as the common point, at all times. The screen of the 24 detector varies from a low of 9V to a high of 17V, using the PT Ct as the common.
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Messages In This Thread
model 20 hum (detector circuit?) - by Tubesforme - 10-19-2015, 01:11 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-19-2015, 06:23 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-20-2015, 10:01 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-25-2015, 10:57 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-25-2015, 11:39 AM
RE: model 20 hum (detector circuit?) - by morzh - 10-25-2015, 11:08 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-26-2015, 10:18 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-26-2015, 10:34 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-26-2015, 11:24 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-27-2015, 08:43 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-28-2015, 11:52 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-28-2015, 03:36 PM
RE: model 20 hum (detector circuit?) - by Tubesforme - 10-30-2015, 01:28 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-30-2015, 06:13 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-31-2015, 10:40 AM
RE: Low continual hum in model 21 - by Tubesforme - 10-23-2015, 11:19 PM



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