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RF, Microwave, Ham Radio / Re: Transistor tester
« Last post by Calambres on Today at 06:48:12 am »I have some of those units, even a couple with genuine ATmega processor (AY-AT) and have never experienced a Ge trannie being identified as a JFET. On the other hand, the measurements are off, always reading high beta and leakage.Those chinese testers work so-so with Ge trannies.
Their firmware is based on an older version of the OSHW k-firmware with issues discerning Ge BJTs from JFETs. If you have a tester with a genuine ATmega you could flash the m-firmware which comes with a few additional checks to tell Ge BJTs and JFETs apart.
I have not investigated the reflashing method. It seems to me a bit cumbersome from what I've seen. Is there a "dummies guide" to do it easily?