US PATENT SUBCLASS 327 / 332
.~.~.~ With feedback

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

100  DF  SIGNAL CONVERTING, SHAPING, OR GENERATING {29}
306  DF  .~ Amplitude control {5}
331  DF  .~.~ Maintaining constant level output {1}
332.~.~.~ With feedback

DEFINITION

Classification: 327/332

With feedback:

(under subclass 331) Subject matter wherein a correction voltage is returned from an output circuit to a control electrode in the input.

SEE OR SEARCH THIS CLASS, SUBCLASS:

131, for systems utilizing cathode feedback.

185, and 590+, for tube systems with feedback.

SEE OR SEARCH CLASS

330, Amplifiers, appropriate subclasses, particularly

75+, 156, 258, 260, 265, 270, 271, 282, 290, and 291+ for amplifiers with linear feedback.