We found this configuration in documentation from the 1980s. It applies to almost any operational amplifier and in this version requires a symmetrical power supply.
This high-performance circuit was found in the 1982 SGS Linear Integrated Circuits Manual. The...
This circuit was found in Radio Electronics magazine from the 90's. The circuit is for small NiCad...
The circuit in the figure is a comparator for negative voltages, and a pair of polarization...