Found in a Philips publication from the 1970s, this circuit uses a DO040, which is difficult to obtain today. The circuit is powered by 12 V on pins indicated in the diagram.
Featuring low output impedance and high input impedance, this configuration was found in a 1980s...
This is the traditional configuration of an inverter amplifier with operational. The operational...
This circuit is from 1972 documentation. The circuit detects when the voltage input is in the...