Tubes Asylum

Tube health judging by Maximatcher ll readings

24.150.196.148

Paul Kehayas

I am wondering if the readings that the maximatcher can give for a tube, (in this case a 6L6GC) reflect the health and useage of the tube. Can a tube that tests within the recommended measurements be near the end of its life or is it still considered with plenty of life left?
Paul

Follow Ups:

RE: Tube health judging by Maximatcher ll readings - Tom Bavis 11:26:15 03/21/24 (1)
Transconductance generally falls off with use, so it is an indication of condition. As transconductance drops, distortion may increase. Peak emission is what determines maxim power output capability - though it isn't easily measured without a curve tracer, it generally drops with usage as well.
- RE: Tube health judging by Maximatcher ll readings - Paul Kehayas 14:34:50 03/22/24 (0)
  Thank you for that! Makes sense.
  Paul

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