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Class Information
Number: 330/122
Name: Amplifiers > Including a push-pull stage > Input and/or output coupling for push-pull
Description: Subject matter involving specific details or distinctive characteristics of the input and/or output circuits coupling the source to the amplifying devices and the amplifying devices to a load, respectively.










Patents under this class:

Patent Number Title Of Patent Date Issued
8446228 Oscillator circuit May. 21, 2013
8416968 Audio device and audio input/output method Apr. 9, 2013
8022776 Origami cascaded topology for analog and mixed-signal applications Sep. 20, 2011
7321752 Linear amplification arrangement with non-linear amplifier element for a mobile radio device Jan. 22, 2008
7145392 Methods and apparatus for variable harmonic distortion Dec. 5, 2006
7030690 Operational amplifier with selectable performance characteristics Apr. 18, 2006
5838196 Transformer-coupled amplifier Nov. 17, 1998
5731740 Circuit bias via transformer Mar. 24, 1998
5498996 High-power, high-fidelity tube amplifier Mar. 12, 1996
5107223 Phase inverter and push-pull amplifier using the same Apr. 21, 1992
4554510 Switching fiber optic amplifier Nov. 19, 1985
4066975 Audio amplifier with improved stability Jan. 3, 1978
4047120 Transient suppression circuit for push-pull switching amplifiers Sep. 6, 1977
3995226 Audio amplifier Nov. 30, 1976











 
 
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