US PATENT SUBCLASS 363 / 119
.~.~.~.~ Particular waveform grid excitation

Current as of: June, 1999
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363 /   HD   ELECTRIC POWER CONVERSION SYSTEMS

13  DF  CURRENT CONVERSION {25}
111  DF  .~ Using electronic tube converter {4}
114  DF  .~.~ In rectifier systems {2}
116  DF  .~.~.~ With discharge control means (e.g., grid) {3}
119.~.~.~.~ Particular waveform grid excitation

DEFINITION

Classification: 363/119

Particular waveform grid excitation:

(under subclass 116) Subject matter wherein the control of the discharge control means involves the application thereto of a voltage having a particular waveform.

(1) Note. Particular waveform is defined as a waveform significantly different from that of a sine wave.

(2) Note. Particular waveforms include square top waves, saw tooth waves, peaked waves, etc.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnection Systems,

106+, for miscellaneous wave shaping systems.

315, Electric Lamp and Discharge Devices: Systems, appropriate subclasses for miscellaneous systems for supplying current to an electronic tube of the gas or vapor type which has a discharge control means (e.g., grid, igniter, magnetic field). Many of the systems inherently operate to convert A.C. to D.C. and many of the tubes are referred to as rectifiers, and are therefore closely analogous to the systems in this and the indented subclass.

261, 264 and 267 to 275 provide for the systems where the tube is supplied with alternating current, and where the tube has a discharge control means which is controlled by applying current or voltage of a particular waveform to the discharge control means. See subclasses 261+ for those systems where the discharge control means is an auxiliary starting electrode (e.g., igniter). Note, especially indented subclass 262 where a peaking transformer is in the auxiliary starting electrode circuit; and subclass 263 where an inductance or surge generator is included in the auxiliary electrode circuit. See subclass 267 for those systems where the discharge control means is an electromagnetic means. See subclasses 268+ for the miscellaneous alternating current supplied discharge control tube systems. Note especially indented subclass 274 where a transformer such as a peaking transformer, is included in the control circuit, and indented subclass 275 where a condenser is included in the control circuit. For the line between Classes 315 and 363, see the class definition, Lines With Other Classes. 327, Miscellaneous Active Electrical Nonlinear Devices,

Circuits, and Systems,

100+, for miscellaneous tube networks producing a waveform of particular shape.

333, Wave Transmission Lines and Networks,

19, for differentiating and integrating networks of the passive type, and subclass 20 for wave shaping networks in general of the passive type.