US PATENT SUBCLASS 323 / 318
EXTERNAL OR OPERATOR CONTROLLED

Current as of: June, 1999
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323 /   HD   ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS

318EXTERNAL OR OPERATOR CONTROLLED {5}
319  DF  .~> Zero switching
320  DF  .~> Phase controlled switching using electronic tube or a three or more terminal semiconductive device {6}
328  DF  .~> Using a transformer or inductor as the final control device {6}
349  DF  .~> Using a three or more terminal semiconductive device as the final control device {2}
352  DF  .~> Using an impedance as the final control device {1}

DEFINITION

Classification: 323/318

EXTERNAL OR OPERATOR CONTROLLED:

(under the class definition) Subject matter including means for controlling an output through the action of an externally generated signal or the adjustment of an element within the system by an operator of the system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

234, for systems which are controlled in response to the output level of the system.

299, for systems which are controlled in response to the input level of the system.

304, for systems which are controlled by the inherent characteristics of the elements which make up the system.