.~ With control of input electrode or gain control electrode bias {13}
132
.~.~ Frequency selective means to select control signal from amplifier channel
DEFINITION
Classification: 330/132
(under subclass 129) Subject matter wherein the "means to control the bias voltage" is derived from the electrical signal channel through a frequency selective means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
52, for pilot frequency control amplifiers including subject matter wherein the pilot control is derived from the signal channel by frequency selective means.
85, for amplifiers having an amplifier in the feedback path including those having bias voltage control which may be derived by frequency selective means.
86, for amplifiers having a variable impedance means in the signal feedback path controlled by a separate control which may be derived by a frequency selective means from the signal channel.
109, for signal feedback amplifiers having frequency responsive means in the feedback path.
143, for amplifiers having thermally responsive impedance which may be controlled by a voltage derived through a frequency selective means from the signal channel. 144+, for amplifiers having a variable impedance for the signal channel controlled by a separate control path, wherein the control voltage may be derived from the signal channel by a frequency responsive means.
