US PATENT SUBCLASS 330 / 136
.~.~ Bias control signal from input of amplifier


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330 /   HD   AMPLIFIERS

127  DF  WITH CONTROL OF POWER SUPPLY OR BIAS VOLTAGE {2}
129  DF  .~ With control of input electrode or gain control electrode bias {13}
136.~.~ Bias control signal from input of amplifier


DEFINITION

Classification: 330/136

(under subclass 129) Subject matter wherein "the bias control

voltage" is derived from the input circuit of the amplifying device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9, for amplifiers having periodic switching for input-output comparison including those amplifiers wherein a bias control voltage for drift correction is developed from such comparison means.

11, for amplifiers having D.C.. reinsertion circuits.