The sensor of this circuit is a photodiode. Equivalent operations can be used, and the instrument can be replaced by the lower current range of a standard multimeter.
The dsPIC33EP128GS808 Digital Signal Controller Family now Offers up to 128 KB of Flash while...
The emitter of this circuit from a 1995 publication is an infrared LED and the sensors are...
We found this circuit in an English publication from 1980. It memorizes the peak of the input...