US PATENT SUBCLASS 323 / 263
.~.~.~ With electronic tube or a three or more terminal semiconductive device in control circuit

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}
259  DF  .~.~ Having a winding in series with the source and load (e.g., buck-boost) {4}
263.~.~.~ With electronic tube or a three or more terminal semiconductive device in control circuit

DEFINITION

Classification: 323/263

With electronic tube or a three or more terminal semiconductive device in control circuit:

(under subclass 259) Subject matter including a signal processing circuit between the means responsive to the output and the final control device, the signal processing circuit including at least one electronic tube or three or more terminal semiconductor device.