Re: Transistor Tester and Germanium

Posted by balno on Apr 07, 2018; 9:28pm
URL: http://guitar-fx-layouts.238.s1.nabble.com/Transistor-Tester-and-Germanium-tp42581p42592.html

Thanks a lot for your answer. I will use now my tester with full confidence.

Guess I've been fooled by some test measurements I did with my DMM. I was measuring this way:

 

I had in mind that measuring intensity between Collector and Emitter will give me and approximation of the leakage value. For a number of Ge trannies, I measure a very high value (currently more than 1mA). I decided to leave everything this way for  a few minutes and see what happens. And, to my surprise, the measured value slowly decreased to a more acceptable range. As my knowledge in electronics is pretty limited, I conclude that connecting a power supply, temperature or something had an effect on the measurement. In doubt I decided to order this testerwhich I trust now better than my first approach.

Thanks again !