This circuit was originally suggested by General Electric in 1966 documentation to power decorative high voltage neon lamps. The transformer is 7,500 V for a current of 4 mA.
This alarm, found in a 2002 documentation, uses several sensors and has a 12 V supply, not...
This circuit uses a special 1950's RCA strobe tube. It can be built with equivalent components for the rest...
This circuit, which can act as a shield, was found in a 1970s American documentation. The...