H03F3/30 - CPC Classification Index

ClassID:

219245 ⎘

H03F3/30 - CPC Classification

Classification description:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements Single-ended push-pull amplifiers ; Phase-splitters therefor

Sub-classes:

H03F3/3001 » {with field-effect transistors} 38
H03F3/3066 » {the collectors of complementary power transistors being connected to the output} 34
H03F3/3069 » {the emitters of complementary power transistors being connected to the output} 34
H03F3/3081 » {Duplicated single-ended push-pull arrangements, i.e. bridge circuits } 19
H03F3/3083 » {the power transistors being of the same type } 3

Recent Application in this class:

20240322763

2024-09-26

DIFFERENTIAL AMPLIFIER COMPENSATION

20230046993

2023-02-16

Differential amplifier compensation

20210313939

2021-10-07

Amplifier with built in time gain compensation for ultrasound applications

20190199289

2019-06-27

Amplifiers and related integrated circuits

20190173429

2019-06-06

Low voltage feedforward current assist ethernet line driver

20190158032

2019-05-23

Amplifier and electronic circuit

20180367111

2018-12-20

Amplifier with built in time gain compensation for ultrasound applications

20180295442

2018-10-11

Switching in an audio system with multiple playback paths

20180287579

2018-10-04

Controlling a power amplification stage of an audio signal amplifier

#10

20170250665

2017-08-31

Controlling a power amplification stage of an audio signal amplifier

#11

20160240156

2016-08-18

Amplifier circuit applied to display apparatus

#12

20160204752

2016-07-14

Apparatus and method in apparatus

#13

20160072735

2016-03-10

Low voltage feedforward current assist ethernet line driver

#14

20150357974

2015-12-10

Buffer circuit

#15

20150303884

2015-10-22

Driving apparatus

#16

20150155840

2015-06-04

Multiple-state, switch-mode power amplifier systems and methods of their operation

#17

20150155830

2015-06-04

Multiple-state, switch-mode power amplifier systems and methods of their operation

#18

20140103999

2014-04-17

Amplifier, fully-differential amplifier and delta-sigma modulator

#19

20100013524

2010-01-21

Load driving circuit

#20

20090201052

2009-08-13

Low voltage, high-speed output-stage for laser or modulator driving

#21

20090051434

2009-02-26

SIGNAL TRANSFER CIRCUIT AND CIRCUIT DEVICE USING SAME

#22

20080284512

2008-11-20

Power amplifier circuitry and method

#23

20080252381

2008-10-16

Transformer circuit

#24

20080174368

2008-07-24

Electron turbulence damping circuit for a complimentary-symmetry amplification unit

#25

20070126505

2007-06-07

Method and apparatus for stabilizing RF power amplifiers

#26

20070096816

2007-05-03

RF power amplifier and method for packaging the same

#27

20070040608

2007-02-22

Feedback controller for PWM amplifier

#28

20070030074

2007-02-08

Zero cancellation in multiloop regulator control scheme

#29

20060208799

2006-09-21

Power amplifier circuitry having inductive networks

#30

20060197591

2006-09-07

Device and method for enhancing output current driving

#31

20060072264

2006-04-06

Signal transfer circuit and circuit device using same

#32

20050280468

2005-12-22

Accurate quiescent current control scheme in floating controlled class AB amplifier

#33

20050218944

2005-10-06

Power amplification circuit and operational amplifier incorporating said circuit

#34

20050195037

2005-09-08

Absolute power detector

#35

20050151591

2005-07-14

RF power amplifier and method for packaging the same

#36

20050052237

2005-03-10

Power amplifier circuitry and method

#37

20050052236

2005-03-10

Power amplifier circuitry and method

#38

20050052235

2005-03-10

Power amplifier circuitry and method

#39

20050052167

2005-03-10

Power amplifier circuitry and method

#40

16116015

2019-04-09

Steered current source for single-ended class-A amplifier