Found in a 1967 RCA power manual, this circuit uses an ordinary neon lamp to fire a triac. The circuit is for the 110V network.
This circuit with the 741 operational amplifier was found in the March 1995 issue of Electronics Now...
This circuit was found in a General Electric documentation from 1966. It uses discrete components...
We found this circuit in a French technical documentation from 1982. The circuit can be...