This simple sensitive circuit was suggested in a July 1992 Radio Electronics issue. The relay is a double-contact changeover relay. Sensitivity adjustment is made at R2.
This circuit appeared in the June 1990 issue of Radio Electronics magazine. Integrated circuits must...
We have in the figure a traditional amplifier configuration with operational amplifier. The source...
March 2017 - Mouser Electronics already has the new Toshiba TLP3306 photo-relay and optical...