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.
We give in the figure a different application of 4013, which can also be used as monostable. In common...
This circuit is from a 1980s Signetics documentation. The circuit separates the modulation signal from a...
This filter was obtained from a Linear Technology manual from the 1990s. The power supply must be...