.~ Positive and negative feedback in same path at different frequencies
DEFINITION
Classification: 330/101
(under subclass 75) Subject matter wherein a single signal feedback circuit means through an impedance shared by the same input and output circuits has for currents flowing through the same shared feedback impedance at one frequency a signal feedback in phase (positive feedback) with the signal input where the signal feedback is applied and at least at some other frequency a signal feedback component flowing through the same feedback impedance, in opposite phase with the signal (negative feedback).
SEE OR SEARCH THIS CLASS, SUBCLASS:
82, for amplifiers having at least one stage of push-pull amplification including both positive and negative feedback.
89, for cascaded amplifiers having cathode-cathode signal feedback between adjacent stages.
93, for amplifiers having cathode impedance feedback and positive feedback.
104, for amplifiers having multiple signal feedbacks including both positive and negative feedback.
