Obtained from an Electronic Engineering of the 90s, these circuits can be applied to almost any operational amplifier. Signal shapes are given next to the diagram.
This Philips circuit of the 70's makes use of components of the time. The DZD40 is an uncommon...
This circuit with two operating modes was found in the September 1989 issue of Radio Electronics...
This circuit is from an old documentation making use of a 3,579,645 MHz analog color television...