This circuit was found in a 1970 American publication. The FETs are power types according to the desired output current. The operational can be replaced for modern equivalents.
This circuit is suggested by General Electric in 1966 documentation. The Triac must match the...
This circuit was suggested by Popular Elecronics from the 90's. The circuit has high input...
This circuit is nothing more than a turn signal for two alternating LEDs that can decorate a robot...