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 is the receiver circuit for the previous transmitter. The circuit has a programming key to...
This circuit was suggested by Electronic Engineering in a 1980s publication. The circuit makes use...
This circuit was found in Siliconix documentation from the 1980s. Common comparators or...