【トランジスタ・カーブトレーサ：調査編】 abstract I'm going to make a simple curved tracer. A curve tracer is a measurement device to easily investigate the characteristics of semiconductors such as transistors or FETs. It is difficult to make a full-scale curve tracer. However, if the functions are limited and the performance is limited to the required range, it is not too difficult to make it. I will briefly