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Class Information
Number: 330/123
Name: Amplifiers > Including a push-pull stage > Power or bias supply circuits and control thereof
Description: Subject matter including means to control the power supply and/or bias voltage supply applied to the electrodes of the amplifying devices; and/or subject matter under subclass 118 involving specific details or distinctive characteristics of the power or bias voltage supply of the amplifying devices.










Patents under this class:

Patent Number Title Of Patent Date Issued
8654867 Transformer power combiner with filter response Feb. 18, 2014
8575975 Stepped voltage drive for driving capacitive loads Nov. 5, 2013
8541733 Laser light detection circuit Sep. 24, 2013
8400221 Method and apparatus for biasing an amplifier Mar. 19, 2013
8362649 Multi-use voltage regulator Jan. 29, 2013
8189816 Computer controlled amplifier and speaker system with power conservation feature May. 29, 2012
8143949 Push-pull linear hybrid class H amplifier Mar. 27, 2012
7944302 Method and apparatus for biasing an amplifier May. 17, 2011
7907664 Digital adaptive feedforward harmonic distortion compensation for digitally controlled power stage Mar. 15, 2011
7571415 Layout of power device Aug. 4, 2009
6970152 Stacked amplifier arrangement for graphics displays Nov. 29, 2005
6759901 Dynamic sensing regulator Jul. 6, 2004
6703080 Method and apparatus for VHF plasma processing with load mismatch reliability and stability Mar. 9, 2004
6683496 System and method for minimizing dissipation in RF power amplifiers Jan. 27, 2004
5909145 Variable control of electronic power supplies Jun. 1, 1999
5793252 Power amplifier with switchable voicing elements Aug. 11, 1998
5635872 Variable control of electronic power supplies Jun. 3, 1997
5559469 Vacuum tube amplifier with selectable power devices Sep. 24, 1996
5550509 Output power selection apparatus for a tube-type audio amplifier Aug. 27, 1996
5546046 Output tube bias selection apparatus for tone alteration in a tube-type audio amplifier Aug. 13, 1996
5170495 Controlling clipping in a microwave power amplifier Dec. 8, 1992
5022305 Tube overdrive pedal operable using low voltage DC battery eliminator Jun. 11, 1991
4719431 Audio power amplifier Jan. 12, 1988
4636740 Control circuit for varying power output of push-pull tube amplifiers Jan. 13, 1987
4593251 Power amplifier capable of simultaneous operation in two classes Jun. 3, 1986
4532476 Power amplifier capable of simultaneous operation in two classes Jul. 30, 1985
4449103 High power class B modulation amplifier for a broadcast transmitter May. 15, 1984
4353036 Field effect transistor amplifier with variable gain control Oct. 5, 1982
3995226 Audio amplifier Nov. 30, 1976











 
 
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