US PATENT SUBCLASS 323 / 349
.~ Using a three or more terminal semiconductive device as the final control device

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

318  DF  EXTERNAL OR OPERATOR CONTROLLED {5}
349.~ Using a three or more terminal semiconductive device as the final control device {2}
350  DF  .~.~> Including plural final control devices
351  DF  .~.~> Switched (e.g., switching regulators)

DEFINITION

Classification: 323/349

Using a three or more terminal semiconductive device as the final control device:

(under subclass 318) Subject matter wherein the device which ultimately controls the level of the output is a transistor or SCR.

SEE OR SEARCH THIS CLASS, SUBCLASS:

223, for shunt regulators.

265, for output level responsive devices.

311, for self-regulating devices, all using three or more terminal semiconductive devices as final control devices.

SEE OR SEARCH CLASS

219, Electric Heating,

501, for devices of this type having electric heating devices as a load. 327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

438+, and 530+ for subcombinations of systems using semiconductive devices as final control devices.