This Intersil circuit was found in a 1980s documentation. Operational are of the time, but current equivalents can be experienced. The graph with the circuit performance is given next to the diagram.
Obtained in an American documentation from 1976, this circuit has a constant current source for...
This circuit was obtained in a 1982 English magazine. The purpose of this circuit is to interface...
Found in a 1960 Sylvania manual, this circuit is intended to measure audio signals frequency....