This circuit is from an American 1964 documentation. Transistors of the time are used, but modern equivalents can be employed.
This calibrated circuit was found in documentation from the 1980s. It makes use of an integrated circuit...
The figure shows how to add a Darlington stage to an operational amplifier in order to obtain a...
This circuit has two stable states such that at each instant only one SCR leads. The state change is...