US PATENT SUBCLASS 323 / 247
.~ 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

234  DF  OUTPUT LEVEL RESPONSIVE {6}
247.~ Using a transformer or inductor as the final control device {5}
248  DF  .~.~> Ferroresonant
249  DF  .~.~> Controllably saturable {3}
255  DF  .~.~> Having a variable length winding (e.g., tapped) as the final control device {2}
259  DF  .~.~> Having a winding in series with the source and load (e.g., buck-boost) {4}
264  DF  .~.~> Having movable structure or winding

DEFINITION

Classification: 323/247

Using a transformer or inductor as the final control device:

(under subclass 234) Subject matter wherein the device within the systems which is the ultimate controller of the output is a transformer or inductor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

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

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

328, for transformers or inductors used in external or operator controlled 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.