This static switch or electronic contactor was found in a 1968 Motorola publication. The triac depends on the current of the load it controls. The values shown are for the 120 V power grid.
This simple alarm circuit was found in a 1998 documentation. When the sensors are activated, the...
This circuit was found in an old American documentation. The integrated circuit used is uncommon...
Found in a 90s Electronic Design, this suggestion to have a higher voltage in a fixed regulator...