This circuit with the CA3059 was found in the July 1995 Elexctronics Now magazine. The signal must be DC, and the circuit is not isolated from the mains.
We found this circuit in the Motorola Linear Databook published in 1990. The circuit can be...
The figure shows how to add a Darlington stage to an operational amplifier in order to obtain a...
This circuit was found in a British documentation from 1969. It can be implemented with modern...