ClassID:

219162

H03F1/308 - CPC Classification

Classification description:

Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements; Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in push-pull amplifiers using MOSFET

Recent Application in this class:
#1
20250080069
2025-03-06

UNIT AMPLIFICATION CIRCUIT, AMPLIFIER AND RECEIVING CIRCUIT

#2
20240146254
2024-05-02

TRANSISTOR WITH DISTRIBUTED THERMAL FEEDBACK

#3
20230318536
2023-10-05

Low power VB class AB amplifier with local common mode feedback

#4
20220416739
2022-12-29

PUSH-PULL RADIO FREQUENCY POWER AMPLIFIER AND METHOD FOR CONTROLLING CIRCUIT

#5
20220200538
2022-06-23

Amplifier with a controllable pull-down capability for a memory device

#6
20210067102
2021-03-04

Amplifier circuit

#7
20200259463
2020-08-13

High-speed high-accuracy amplifier and method thereof

#8
20190044487
2019-02-07

Class-D amplifier and audio playback apparatus

#9
20190028071
2019-01-24

Bias circuit with a replica circuit for an amplifier circuit and a generation circuit supplying bias voltage to the replica and amplifier circuits and optical receiver

#10
20180145639
2018-05-24

Amplifier for contorlling output range and multi-stage amplification device using the same

#11
20170244367
2017-08-24

High linearity inductorless LNA

#12
20170085230
2017-03-23

Class AB amplifier with bias control

#13
20160134240
2016-05-12

Method and circuitry for CMOS transconductor linearization

#14
20160118939
2016-04-28

Amplifier and amplification method

#15
20150333708
2015-11-19

Class-D amplifier

#16
20150263679
2015-09-17

Inverting amplifier

#17
20150188495
2015-07-02

Current controlled transconducting inverting amplifiers

#18
20140292411
2014-10-02

High performance class AB operational amplifier

#19
20140155126
2014-06-05

Push-pull amplifier with quiescent current adjuster

#20
20130162618
2013-06-27

Output voltage stabilization circuit of display device driving circuit

#21
20130088298
2013-04-11

High performance class AB operational amplifier

#22
20120326768
2012-12-27

Hybrid impedance compensation in a buffer circuit

#23
20120268212
2012-10-25

Amplifier arrangement and method for operating an amplifier arrangement

#24
20120242407
2012-09-27

Switched amplifier circuit arrangement and method for switched amplification

#25
20120188016
2012-07-26

Circuitry for biasing amplifiers

#26
20110193634
2011-08-11

Amplifier with reduced output transients and method therefor

#27
20110133839
2011-06-09

Arrangement for calibrating the quiescent operating point of a push-pull amplifier

#28
20100044835
2010-02-25

Setting the DC operating current of a rail-to-rail output stage of an op-amp

#29
20100039180
2010-02-18

Amplifying circuit

#30
20100026391
2010-02-04

Amplifier circuit

#31
20090315621
2009-12-24

Amplifier with gain expansion stage

#32
20090251217
2009-10-08

Amplifier design with biasing and power control aspects

#33
20090237125
2009-09-24

Power efficient push-pull buffer circuit, system, and method for high frequency signals

#34
20090184603
2009-07-23

Drive circuit

#35
20090153248
2009-06-18

Amplifier with dynamic bias

#36
20090115519
2009-05-07

Power amplifier and its idling current setting circuit

#37
20090085688
2009-04-02

Semiconductor circuit, and computing device and communications device using the same

#38
20090066416
2009-03-12

Push-pull amplifier

#39
20090002070
2009-01-01

Methods and apparatus to control rail-to-rail class AB amplifiers

#40
20080260179
2008-10-23

Active loudspeaker

#41
20060208800
2006-09-21

Biasing stage for an amplifier

#42
20060012433
2006-01-19

Amplifier with a voltage-controlled quiescent current and output current

#43
20060012431
2006-01-19

Class AB amplifier having adjustable quiescent current and output current

#44
20050212592
2005-09-29

Switching amplifier

#45
20050077961
2005-04-14

Class AB rail-to-rail operational amplifier

#46
20050036635
2005-02-17

Audio signal output device

#47
16016818
2020-02-18

Supply-noise-rejecting current source