This automotive circuit was obtained from an 80's schematic from the integrated circuit factory itself. The voltage regulator is still common, but the operational amplifier is of the time.
This remote-control circuit was found in Radio Electronics magazine from June 1962. It drives a...
In the figure we have a bistable multivibrator using an operational one. The circuit is from old...
The circuit shown in the figure uses general purpose NPN transistors and can be used to generate...