US PATENT SUBCLASS 327 / 11
.~.~.~.~ With transformer

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

1  DF  SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL {11}
2  DF  .~ By phase {1}
3  DF  .~.~ Comparison between plural inputs (e.g., phase angle indication, lead-lag discriminator, etc.) {5}
7  DF  .~.~.~ With reference signal {4}
11.~.~.~.~ With transformer

DEFINITION

Classification: 327/11

With transformer:

(under subclass 7) Subject matter wherein an electromagnetic induction device transfers electrical energy from one circuit to another adjacent circuit at a constant frequency.

(1) Note. A transformer changes voltage in direct proportion to the ratio of the number of turns of its primary and secondary windings.

SEE OR SEARCH CLASS

336, Inductor Devices, appropriate subclasses for transformer details.