(under the class definition) Subject matter wherein the discharge device is supplied with polyphase alternating current.
(1) Note. This subclass includes system wherein the electrodes are supplied with alternating current of one phase, and the electrode moving mechanism is supplied with alternating current of a different phase.
(2) Note. This subclass includes systems wherein the alternating current source is a single phase source of supply, and means are provided for dividing the current into two or more out of phase currents for supplying polyphase alternating currents to the discharge device.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems,
137, and indented subclasses, for miscellaneous systems for supplying electric lamps and/or electric space discharge devices of the gas or vapor ionization type with polyphase alternating current. Note especially subclass 138, for such systems where single phase current is converted to polyphase.
336, Inductor Devices, 5, for the structure of polyphase transformers and inductive reactors of general utility.
363, Electric Power Conversion Systems,
148+, for phase conversion systems (e.g., single phase to
