This circuit was found in General Electric documentation from 1965. The transistors are from that time. The diodes consist of a component that contained them.
This configuration, found in other circuits on this site, was obtained in an English publication from...
Texas Instruments Standard Operational Amplifiers Texas Instruments makes available through Mouser...
November 2016 - Mouser Electronics is selling the entry circuit for Analog Devices AD8232 and...