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In Reply to: testing tubes posted by joessportster on March 13, 2016 at 15:56:47:
If I am not mistaken, your tester's scales goes from 0 to 120. Thus, indicating that a reading of 100 or more is for a new tube. However, tube testers have variations in readings even between the same model tester and even new tubes can test lower than 100. For small signal tubes, 12ax7, etc, this reading is good enough if you are concerned with matched sections. For power tubes the readings can be far off for matching where the current consumption of the tube also needs to be matched especially in a push pull amplifier. cheers, Dak
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Follow Ups
- RE: testing tubes - DAK 11:24:34 03/14/16 (0)