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Class Information
Number: 330/118
Name: Amplifiers > Including a push-pull stage
Description: Subject matter including two amplifiers as defined in the class definition, the input electrodes of each of the amplifying devices of the two amplifiers being balanced to ground or some other convenient electrical reference plane, the source of electrical signal being such, and so coupled to the input electrodes, that at any instant the signal on each input electrode is substantially equal and opposite in sign to the signal on the other input electrode; and wherein the signal on the output electrodes of each of the amplifying devices is similarly balanced to a convenient electrical reference plane.










Sub-classes under this class:

Class Number Class Name Patents
330/119 Coupling to or from cathode in push-pull 7
330/122 Input and/or output coupling for push-pull 14
330/120 Interstage coupling between push-pull 5
330/123 Power or bias supply circuits and control thereof 29


Patents under this class:

Patent Number Title Of Patent Date Issued
8446228 Oscillator circuit May. 21, 2013
8022776 Origami cascaded topology for analog and mixed-signal applications Sep. 20, 2011
7567784 Tuner, broadcast signal processing apparatus comprising the same, and broadcast signal processing method Jul. 28, 2009
7193458 Power supply for guitar amplifier Mar. 20, 2007
6937093 Cathode-coupled pentode valve amplifier with servo offset controlled push-pull output stage Aug. 30, 2005
6621335 Class D amplifier with passive RC network Sep. 16, 2003
6140870 Hybrid thermionic valve and solid state audio amplifier Oct. 31, 2000
5912585 Vacuum tube audio amplifying circuit Jun. 15, 1999
5872512 Apparatus and method for reducing errors in a battery operated sensing circuit Feb. 16, 1999
5793252 Power amplifier with switchable voicing elements Aug. 11, 1998
5668499 Tube type power amplifier with distortion control Sep. 16, 1997
5572099 Motor speed control with current limit Nov. 5, 1996
5498996 High-power, high-fidelity tube amplifier Mar. 12, 1996
5363056 Circuit for linearization of amplified electronic signals Nov. 8, 1994
5302912 Push-pull audio amplifier with crossover distortion compensation Apr. 12, 1994
4918394 Audio frequency power amplifier with improved circuit topology Apr. 17, 1990
4797628 Distributed push-pull amplifier Jan. 10, 1989
4751472 High frequency amplifier Jun. 14, 1988
4713624 Power amplifier with modified dynamic response Dec. 15, 1987
4644289 Variable power amplifier for audio frequency signals and method Feb. 17, 1987
4455536 Push-pull microwave amplifier Jun. 19, 1984
4337439 Wide band amplifiers Jun. 29, 1982
4153882 High-efficiency amplifier May. 8, 1979
4047120 Transient suppression circuit for push-pull switching amplifiers Sep. 6, 1977
4028633 Drive control to prevent simultaneous conduction in push-pull switching amplifier Jun. 7, 1977











 
 
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