This circuit is from a Motorola documentation from 1968. The integrated one is an operational of the time still in metallic casing. Modern equivalents can be used.
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...