US PATENT SUBCLASS 323 / 328
.~ Using a transformer or inductor 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}
328.~ Using a transformer or inductor as the final control device {6}
329  DF  .~.~> Controllably saturable {5}
340  DF  .~.~> Having a variable length winding (e.g., tapped) as the final control device {3}
344  DF  .~.~> Having a windng in series with the source and load (e.g., buck-boost)
345  DF  .~.~> Having a switch in series with winding
346  DF  .~.~> Having series-parallel connectable windings
347  DF  .~.~> Having movable structure or winding {1}

DEFINITION

Classification: 323/328

Using a transformer or inductor as the final control device:

(under subclass 318) Subject matter wherein the device within the system which is the ultimate controller of the output is a transformer or inductor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

247, for systems of this type which are responsive to the output level of the system.

301, for transformers or inductors used in input level responsive devices.

305, for transformers or inductors used in self-regulating devices.

355, for miscellaneous transformer or inductor devices.

SEE OR SEARCH CLASS 336, Inductor Devices, appropriate subclasses for transformer or inductor structure.

361, Electricity: Electrical Systems and Devices,

35, for transformer protection, and subclass 93.6 for abnormal current condition protection including transformer sensor.