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Any guesses?

Chuck Schwark
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Posts: 1,703
Threads: 55
Joined: Sep 2005
City: Evanston, IL

#18

11-20-2005, 11:30 PM

Hmmm......yes, I see that now. A Shadow Meter is normally in series with the IF and RF tube's B+ line, straight DC current and pre-disposed my brain to think in terms of DC current. Icon_redface

Icon_redface

I don't think it's acting like an auto-former though....

I see that as a tapped audio choke, tapping off part of the full AC component and the reduced audio currents then get rectified by the diode. The DC thus generated would be a steady DC, since this meter is supposed to be used with an RF gen with audio modulation on (steady tone on output tube). Think the way it's drawn threw me at first.

Chuck Schwark,
The Philco Repair Bench
[Image: http://www.philcorepairbench.com/images/philog3tiny.gif]
http://www.philcorepairbench.com

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Messages In This Thread

Any guesses? - by Jerry Huelsbeck - 11-09-2005, 11:05 PM

[No subject] - by Ron Ramirez - 11-09-2005, 11:40 PM

[No subject] - by Jerry Huelsbeck - 11-10-2005, 03:36 AM

[No subject] - by Chuck Schwark - 11-10-2005, 09:41 AM

[No subject] - by Ron Ramirez - 11-10-2005, 10:58 AM

[No subject] - by Ron Ramirez - 11-13-2005, 12:36 AM

[No subject] - by Guest - 11-13-2005, 01:33 AM

[No subject] - by Chuck Schwark - 11-13-2005, 12:48 PM

[No subject] - by Guest - 11-13-2005, 01:19 PM

[No subject] - by Ron Ramirez - 11-13-2005, 01:29 PM

[No subject] - by Chuck Schwark - 11-13-2005, 03:04 PM

[No subject] - by Chuck Schwark - 11-13-2005, 03:18 PM

[No subject] - by Ron Ramirez - 11-13-2005, 03:28 PM

[No subject] - by Guest - 11-13-2005, 04:05 PM

[No subject] - by Guest - 11-20-2005, 06:20 PM

[No subject] - by Chuck Schwark - 11-20-2005, 08:31 PM

[No subject] - by Terry Judkins - 11-20-2005, 10:58 PM

[No subject] - by Chuck Schwark - 11-20-2005, 11:30 PM

[No subject] - by Guest - 11-27-2005, 07:45 PM

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