US PATENT SUBCLASS 327 / 87
.~.~.~ Having feedback


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

1  DF  SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL {11}
50  DF  .~ By amplitude {9}
77  DF  .~.~ Input signal compared to single fixed reference {10}
87.~.~.~ Having feedback


DEFINITION

Classification: 327/87

Having feedback:

(under subclass 77) Subject matter wherein a portion of the output signal is returned to an input.