The threshold voltage is set by output channel comprised of pulse generator, photoelectric coupler and F/V converter, and the detection result is input through photoelectric coupler.
利用可变频脉冲发生器、光电耦合器和F/V转换器组成输出通道，设定阀值；
2
A current measuring device comprising a current detector (10) and a photoelectricconverter (20).
一种电流测量装置包括电流检测器(10)和光电转换器(20)。
3
It may be a photoelectricconverter in the application of exploded piont measuring and film reader. That can greatly enhance the photogrammetry automatization.