Found in General Electric's 1969 documentation, this circuit uses two Foto Darlingtons to control the SCRs driving phases. SCRs can be equivalent current types.
This circuit came out at a Wireless World in January 2000. The circuit can be easily assembled as it uses...
This circuit was obtained from a Texas Instruments 1985 document. The circuit is powered by 1.5 V...
Found in old documentation about neon lamps, this circuit shows how to add a simple blown fuse...