US PATENT SUBCLASS 330 / 283
.~.~.~ Having emitter degeneration

Current as of: June, 1999
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330 /   HD   AMPLIFIERS

250  DF  WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) {21}
278  DF  .~ Including gain control means {4}
282  DF  .~.~ Having feedback means acting as variable impedance {1}
283.~.~.~ Having emitter degeneration

DEFINITION

Classification: 330/283

Having emitter degeneration:

(under subclass 282) Subject matter including a feedback means acting as a variable impedance in the common electrode of the amplifier to control the gain of the amplifier.

SEE OR SEARCH THIS CLASS, SUBCLASS:

95, for amplifiers having nonlinear impedance means in the cathode impedance feedback path.