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 circuit was originally found in Radio Electronics magazine, enabling the transmission of...
This circuit uses one of the first comercial transistor and is from a 1958’s magazine. Tone...
This circuit is from a 1966 documentation. The transistor is made of germanium of the time and the...