US PATENT SUBCLASS 327 / 465
.~.~.~ DC supply

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}
465.~.~.~ DC supply {6}
466  DF  .~.~.~.~> PUT (i.e., programmable unijunction transistor)
467  DF  .~.~.~.~> Four electrodes
468  DF  .~.~.~.~> SCR and unijunction transistor
469  DF  .~.~.~.~> Triac
470  DF  .~.~.~.~> Plural devices {3}
475  DF  .~.~.~.~> SCR and bipolar transistor

DEFINITION

Classification: 327/465

DC supply:

(under subclass 438) Subject matter wherein the switching circuit is power supplied by a steady voltage source (i.e., its positive and negative terminals do not change their potentials over time).