US PATENT SUBCLASS 363 / 116
.~.~.~ With discharge control means (e.g., grid)

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.~.~.~ With discharge control means (e.g., grid) {3}
117  DF  .~.~.~.~> D.C. bias control
118  DF  .~.~.~.~> Phase angle control
119  DF  .~.~.~.~> Particular waveform grid excitation

DEFINITION

Classification: 363/116

With discharge control means (e.g., grid):

(under subclass 114) Subject matter wherein the electronic tube converter is provided with a discharge control means.

(1) Note. Examples of such discharge control means include

a grid, igniter, magnetic control device, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

94, for current conversion systems wherein an electronic tube having discharge control means is used for line circuit control.

121+, for inverter systems including an electronic tube converter which has a discharge control means.

151, for phase conversion systems including an electronic tube converter which has a discharge control means.

166+, for frequency conversion systems including an electronic tube converter which has a discharge control means. SEE OR SEARCH CLASS

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. Note, especially

137+, where the supply circuit is a polyphase alternating current supply circuit; subclasses 194+ where the system includes means to shift the phase of the current or potential applied to the discharge control means with respect to the anode-cathode current to control the tube; subclasses 248+ where the source of supply is alternating current; indented subclass 252 providing for those systems which include a plurality of discharge control type electronic tubes; indented subclasses 261+ providing for those systems where the discharge control means is an auxiliary starting electrode (e.g., igniter); indented subclass 267 providing for those systems where the discharge control means is an electromagnetic means; and indented subclasses 268+ providing for the miscellaneous alternating current supplied discharge control tube systems. 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, appropriate subclasses for miscellaneous electron tube systems not otherwise classified.