US PATENT SUBCLASS 330 / 112
.~ Positive feedback
Current as of: June, 1999
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DEFINITION
Classification: 330/112
(under subclass 75) Subject matter wherein the signal feedback has a component in phase with the signal where the feedback is applied and which is not provided for above.
SEE OR SEARCH THIS CLASS, SUBCLASS:
82, for push-pull amplifiers including positive signal feedback.
89, for cascaded amplifiers having cathode-cathode signal feedback.
93, for cathode impedance signal feedback combined with diverse type signal feedback including positive signal feedback.
101, for positive and negative feedback in the same path at different frequencies.
104, for positive and negative feedbacks combined, generally. SEE OR SEARCH CLASS
331, Oscillators, appropriate subclasses for oscillators operating on the positive feedback principle.
333, Wave Transmission Lines and Networks,
213+, for negative resistance and/or reactance networks of the active element type which usually include positive feedback.
455, Telecommunications,
336, for superregenerative receivers; and subclass 337 for regenerative receivers.
