This circuit appears at various points on this site and in this section and can be designed with almost any operational amplifier. This version is from an American documentation from 1975.
Found in American documentation from the 90s, this CMOS circuit detects the source of a signal and can...
This circuit is from an old documentation. The integrated circuit can be replaced by a modern...
This circuit was found in an old documentation, but it can be made with equivalent transistors like BC548...