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Valve ( tube )  Characteristic Tester.
Valve ( tube )  Characteristic Tester.
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Old 22nd June 2020, 10:31 PM   #1
duncan2 is offline duncan2  United Kingdom
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Join Date: Mar 2013
Location: Scotland.
Default Valve ( tube ) Characteristic Tester.

I have no idea if anybody has posted this before but if anybody has the time and patience its not too hard to build .


Keep in mind this is a "proper " tube tester in that it employs a Wein bridge oscillator to test the tube .


The circuit is available in issues of ETI magazine -


Volume 26-number 8 and volume 26- number 10.


It can be accessed on that wonderful American radio heritage website -




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