We found this circuit in a 90's EDN. The circuit is based on a control integrated that is still common in these types of applications. The circuit uses a PROM.
The relay of this circuit closes when the position set in P2 is reached by the sensor...
In this circuit the output voltage is given by xx. The L series circuits are for a maximum current of...
This circuit consists of an electrostatic sensor that can check if a cable is energized by simply...