(under subclass 278) Subject matter having specific details or distinctive characteristics of a biasing means for applying a biasing voltage to the amplifying device.
(1) Note. Merely claiming biasing means or bias filter by name only, or broadly without significant detail or distinctive characteristics, is insufficient for classification in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127+, for amplifiers with control of power supply or bias voltage.
199+, for particular biasing in other amplifiers.
261, for particular biasing in differential amplifiers.
267, for particular biasing in combination with complementary symmetry. 273, for particular biasing in combination with a push-pull amplifier.
285, for particular biasing in gain control circuits.
296, for particular biasing in other transistor amplifiers.
