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.
Indicated on an 80's Radio Electronics, this circuit provides at its output a voltage that is the...
This circuit was found in a Philips documentation from 1970. The components are of the time,...
The integrated circuit used in this application is not currently common and the sensor can be any...