US PATENT SUBCLASS 323 / 250
.~.~.~ With specific core structure (e.g., gap, aperture, slot, permanent magnet)

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

234  DF  OUTPUT LEVEL RESPONSIVE {6}
247  DF  .~ Using a transformer or inductor as the final control device {5}
249  DF  .~.~ Controllably saturable {3}
250.~.~.~ With specific core structure (e.g., gap, aperture, slot, permanent magnet)

DEFINITION

Classification: 323/250

With specific core structure (e.g., gap, aperture, slot, permanent magnet):

(under subclass 249) Subject matter wherein the core includes a gap, aperture, or slot therein or a permanent magnet associated therewith.