US PATENT SUBCLASS 327 / 442
.~.~.~.~ Separate ON and OFF control circuit

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

365  DF  GATING (I.E., SWITCHING INPUT TO OUTPUT) {12}
419  DF  .~ Utilizing three or more electrode solid-state device {7}
438  DF  .~.~ Four or more layer device (e.g., thyristor, etc.) {6}
440  DF  .~.~.~ GTO (i.e., gate turnoff) {3}
442.~.~.~.~ Separate ON and OFF control circuit

DEFINITION

Classification: 327/442

Separate ON and OFF control circuit:

(under subclass 440) Subject matter wherein distinct circuits are used to control the turn-on and turn-off of the switching circuit.