US PATENT SUBCLASS 323 / 337
.~.~.~.~.~ Push-pull

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  DF  .~ Using a transformer or inductor as the final control device {6}
329  DF  .~.~ Controllably saturable {5}
332  DF  .~.~.~ With plural power windings {3}
335  DF  .~.~.~.~ On different cores {2}
337.~.~.~.~.~ Push-pull

DEFINITION

Classification: 323/337

Push-pull:

(under subclass 335) Subject matter wherein the different cores of the transformer arrangement operate on different polarities of the voltage or current to be treated.