Advice for restoring 38-12

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Advice for restoring 38-12

Chuck Schwark
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Posts: 1,703
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Joined: Sep 2005
City: Evanston, IL

04-21-2015, 09:09 AM

Just processing the order for the 38-12 and the schematic shows Field Coil at 1,500 ohms D.C.

Primary winding of output transformer is 450 ohms. Nothing given for secondary. If a winding is
open it will be the primary where all the DC current is for the output tube plate.

Most likely, either cap #21 shorted or the 41 output tube to pop the primary winding open.

Chuck

Chuck Schwark,
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Messages In This Thread

Advice for restoring 38-12 - by Guest - 03-06-2008, 09:25 PM

RE: Advice for restoring 38-12 - by Chuck Schwark - 04-21-2015, 09:09 AM

[No subject] - by Ron Ramirez - 03-07-2008, 12:47 AM

Thanks - another question - by Guest - 03-08-2008, 09:07 PM

[No subject] - by Ron Ramirez - 03-09-2008, 08:50 AM

[No subject] - by TonyJSenior - 03-10-2008, 06:59 PM

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