[WM6]

Originally Posted by Götz von Berlichingen

Of course, Electrotherapy is much older, probably since 1855.
Look here, this looks very much like your "LRL":
http://chss.montclair.edu/~pererat/imquack.htm

Great, problem solved. You say "Torpedo magnetic machine"? It must be fine as LRL. Congratulation.

Thank you. But I still didn't get schematic.