(under the class definition) Subject matter wherein the tuned circuit is responsive to and varied by an external magnetic field applied to the tuned circuit or some element thereof. For example, the magnetic field is produced by a specially movable permanent magnet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
11, for tuners having a capacitor which is responsive to voltage or current variations.
12+, for tuners having a saturable core type inductor which is responsive to voltage or current variations.
SEE OR SEARCH CLASS
323, Electricity: Power Supply or Regulation Systems,
250, 330, and 362 for miscellaneous inductive reactance systems where the reactor includes a permanent magnet as a part thereof. 336, Inductor Devices,
110, for inductors which are provided with a permanent magnet to modify the magnetic flux distribution.
