This circuit has a correction or linearity adjustment. We found it in Ferranti's transistor manual from 1974. Transistors are general-purpose types at the time.
We found this configuration in a Radio Electronics from 1989. The circuit can be designed with...
This interesting configuration was found in a 1965s Electronic Design. It makes use of components of...
This circuit is from old American documentation intended to trigger the flash of a camera flash with...