(under subclass 250) Systems wherein the load devices are discharge devices of the type having two or more principal electrodes and a discharge controlling means, and the system includes means for controlling the electric discharge device by applying electric current or potential to the control means.
(1) Note. For other systems under subclass 246 wherein a discharge device load is provided with discharge controlling means, search this class, subclass 261 and indented subclasses where the discharge controlling means is an auxiliary starting electrode, subclass 267 where the controlling means is an electromagnet, and subclass 268 and indented subclasses, for other miscellaneous discharge control discharge device systems.
SEE OR SEARCH THIS CLASS, SUBCLASS:
195, for this subject matter where the system includes means to shift the phase of the discharge control current and/or
potential with respect to the current in the cathode-anode circuit of the load devices.
251, for this subject matter where the discharge devices are inverse parallel connected asymmetrical discharge devices.
261, see (1) Note. above. 267, see (1) Note. above.
268, see (1) Note. above.
325, and the subclasses specified in the notes to the definition thereof for other plural discharge control discharge device loads.
SEE OR SEARCH CLASS
323, Electricity: Power Supply or Regulation Systems,
227, and 291 for electronic tube regulators. See Lines With Other Classes and Within This Class in the class definition of Class 323.
363, Electric Power Conversion Systems,
116, and 121+ for current conversion systems having an electronic tube convertor provided with discharge control means; subclasses 83, 94, and 99 for current conversion systems having an electronic tube line circuit control means provided with discharge control means. The systems in Class 363 are closely analogous to those in this subclass. See Lines With Other Classes and Within This Class in the class definition of Class 363 for the line between Class 315 and Class 363.
