原作者的文件內就有提到這個問題：
The Source and Drain pins can not be detected correctly with JFET’s. The reason is the symmetrical structure of this semiconductors. You can notice this problem with the effect, that the display shows the same layout with the same parameters, if the Source and Drain pins are swapped. I see no way to detect the Source and Drain pin correctly. But interchanging of Source and Drain in any circuit should usually not cause any problem.
簡單說因為 JFET 的 D S 是對稱結構以目前的測試架構無法正確的判別出來，而大部份的實際電路中也不會有什麼問題。
只能靠資料文件或三用電錶來分辨（G 對 S 短路時 S→D 呈二極體特性(單向導通) ）。
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發表於 2015-9-14 20:08:44
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