US PATENT SUBCLASS 363 / 83
.~.~.~.~.~ With electron tube or valve as control means in the line circuit

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

13  DF  CURRENT CONVERSION {25}
74  DF  .~ With condition responsive means to control the output voltage or current {3}
78  DF  .~.~ Cooperating separate sensing and control means {3}
79  DF  .~.~.~ Including plural sensing or control means {2}
81  DF  .~.~.~.~ By rectifier {2}
83.~.~.~.~.~ With electron tube or valve as control means in the line circuit

DEFINITION

Classification: 363/83

With electron tube or valve as control means in line circuit:

(under subclass 81) Subject matter wherein the line circuit control means includes an electronic tube.

(1) Note. See the class definition, Glossary, for definition of electronic tube.

SEE OR SEARCH THIS CLASS, SUBCLASS:

94, for similar subject matter in a rectifier system.

99, for similar subject matter in an inverter system.

SEE OR SEARCH CLASS

315, Electric Lamp and Discharge Devices: Systems, appropriate subclasses for miscellaneous systems for supplying current to electronic tubes of the vapor or gas type.

323, Electricity: Power Supply or Regulation Systems, 227, and 291 for current or voltage magnitude control systems where the current or voltage magnitude control means includes an electronic tube.

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, appropriate subclasses for miscellaneous electron tube systems not otherwise classified.