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Class Information
Number: 330/112
Name: Amplifiers > Signal feedback > Positive feedback
Description: 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.










Patents under this class:

Patent Number Title Of Patent Date Issued
8604873 Ground partitioned power amplifier for stable operation Dec. 10, 2013
7724104 Constant gain amplifier system with positive and negative feedback May. 25, 2010
7397308 Traveling wave amplifier with distributed regenerative feedback between drain-to-drain transmission lines and gate-to-gate transmission lines for enhanced high frequency bandwidth Jul. 8, 2008
6975734 Audio apparatus of negative driving with adaptive gain control Dec. 13, 2005
6967530 Circuit and semiconductor device for reducing the generation of shock noise of a power amplifier outputting amplified audio signals Nov. 22, 2005
6693487 Signal processing circuit for floating signal sources using positive feedback Feb. 17, 2004
6668165 Inverted super regenerative receiver Dec. 23, 2003
6573789 Signal processing circuit for floating signal sources using positive feedback Jun. 3, 2003
6420928 AC coupled pre-amplifier for burst signal Jul. 16, 2002
6225756 Power oscillator May. 1, 2001
6140879 Cascode amplifier with positive feedback for high frequency performance and method for operating and optimizing such amplifier Oct. 31, 2000
5392001 Capacitively-coupled amplifier with improved low frequency response Feb. 21, 1995
5036228 Temperature compensation circuit for negative impedance driving apparatus Jul. 30, 1991
4864639 Self-test device and method having an amplifier converted into an oscillator Sep. 5, 1989
4709215 Traveling wave tube drive controller Nov. 24, 1987
4542308 Sampling comparator circuit for processing a differential input Sep. 17, 1985
4525679 High gain amplifying stage by output conductance cancellation Jun. 25, 1985
4524331 High input impedance amplifier circuit Jun. 18, 1985
4476440 Cross coupled amplifier Oct. 9, 1984
4369412 Audio amplifier Jan. 18, 1983
4293820 Positive feedback biquad filter Oct. 6, 1981
4236118 Stabilized remote sensing high fidelity apparatus Nov. 25, 1980
4180774 Regenerative method and apparatus to control an elastic reset torque in movable apparatus Dec. 25, 1979
4174465 Signal transmitting interface system combining time compression and multiplexing Nov. 13, 1979
4153849 Circuit for normalizing devices having current-controlled frequency response to predetermined I-F characteristic May. 8, 1979
4118600 Loudspeaker lower bass response using negative resistance and impedance loading Oct. 3, 1978
4091333 Transconductance amplifier circuit May. 23, 1978
4085379 Amplifier for floating voltage source Apr. 18, 1978
4037154 Circuit for calibrating instruments Jul. 19, 1977
3980966 Circuit arrangement for the receiving of binary direct current signals which are transmitted with low transmission voltage over galvanically connected lines Sep. 14, 1976
3974636 Booster circuit for a liquid crystal display device of a timepiece Aug. 17, 1976











 
 
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