This circuit is from 1967 General Electric documentation. It uses SUS which are not very common components today. The maximum frequency should not exceed a few kilohertz.
We found this circuit in the June 1991 issue of Radio Electronics magazine. The circuit can be...
This precision circuit, which also functions as a bridge, was found in a February 1967 Popular...
We found this circuit in an old documentation from the 70s. The text is the original one of the...