This circuit is from the Motorola Linear Databook of 1990 and can be implemented with other operational amplifiers. The power supply must be symmetrical.
This circuit using a SIDAC is suggested by ON Semiconductor in its thyristor manual. The circuit...
August 2017 - Mouser Electronics announced the availability of a full range of Mean Well regulated DC-DC...
In this circuit from the 60s, the power supply is made with 22.5 V, which is the voltage of the...