This circuit was obtained from an American technical manual from the 80's. The integrated circuit is an operational of the time that can be replaced by a modern equivalent.
This didactic circuit from a 1977 Radio Shack documentation shows how to use the 741 as a...
This circuit from the 80's can be easily implemented but needs some changes to avoid problems with...
Found in a 1967 General Electric documentation, this circuit generates a ladder signal from...