ClassID:

219305

H03F3/343 - CPC Classification

Classification description:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements; Dc amplifiers in which all stages are dc-coupled with semiconductor devices only

Sub-classes:
Recent Application in this class:
#1
20230003771
2023-01-05

Current sensing circuit

#2
20220308615
2022-09-29

PIECEWISE LINEAR FUNCTION GENERATING ELECTRONIC CIRCUIT, CORRESPONDING GENERATOR, AMPLIFIER, METHOD AND COMPUTER PROGRAM PRODUCT

#3
20210091777
2021-03-25

Sampling circuit and electronic equipment

#4
20190372527
2019-12-05

Bias circuit and amplification apparatus

#5
20190165741
2019-05-30

Wireless receiver and wireless reception method

#6
20180115303
2018-04-26

Pseudo resistance circuit and charge detection circuit

#7
20150276812
2015-10-01

Current sensing system and method

#8
20110175685
2011-07-21

Multi-primary distributed active transformer amplifier power supply and control

#9
20110148525
2011-06-23

Current mirror with low headroom and linear response

#10
20100283548
2010-11-11

Multi-primary distributed active transformer amplifier power supply and control

#11
20100156390
2010-06-24

Comparative Signal Strength Detection

#12
20100097141
2010-04-22

Current mirror with low headroom and linear response

#13
20100052791
2010-03-04

Amplifier circuit

#14
20090315618
2009-12-24

CURRENT MIRROR CIRCUIT

#15
20090207063
2009-08-20

Variable passive components with high resolution value selection and control

#16
20090108940
2009-04-30

Amplifier

#17
20090102592
2009-04-23

Multi-primary distributed active transformer amplifier power supply and control

#18
20080252381
2008-10-16

Transformer circuit

#19
20080180294
2008-07-31

Variable passive components with high resolution value selection and control

#20
20080179501
2008-07-31

Output impedance varying circuit

#21
20080164948
2008-07-10

Biasing current to speed up current mirror settling time

#22
20080001666
2008-01-03

Saturation detector and warning circuit including clamp

#23
20070229160
2007-10-04

Control circuit for controlling a current and/or voltage of an electronic circuit

#24
20070228257
2007-10-04

Trans-impedance amplifier with offset current

#25
20070223631
2007-09-27

Comparative signal strength detection

#26
20070194852
2007-08-23

Radio frequency power amplifying module with hetero junction bipolar transistor

#27
20070194813
2007-08-23

Variable passive components with high resolution value selection and control

#28
20070182605
2007-08-09

Fast converter for crossing voltage domains

#29
20070164824
2007-07-19

Amplifier

#30
20070120602
2007-05-31

Variable gain power amplifier

#31
20070026747
2007-02-01

Amplifier circuit and method for amplifying a signal to be amplified

#32
20060244533
2006-11-02

Sliding bias circuit for enabling dynamic control of quiescent current in a linear power amplifier

#33
20060231744
2006-10-19

Output impedance varying circuit

#34
20060176106
2006-08-10

Current mode transconductor tuning device

#35
20060164170
2006-07-27

Small signal amplifier with large signal output boost stage

#36
20060138476
2006-06-29

Dc amplifier and semiconductor integrated circuit therefor

#37
20060087761
2006-04-27

Programmable output impedance for hard drive preamplifier write driver

#38
20060066390
2006-03-30

Analog circuit for calculating square and reciprocal of a current

#39
20060049877
2006-03-09

High frequency amplifier in an integrated circuit

#40
20060006947
2006-01-12

Current mirror biasing circuit with power control for HBT power amplifiers

#41
20050248329
2005-11-10

Current voltage converter circuit

#42
20050218994
2005-10-06

Low-voltage, low-power transimpedance amplifier architecture

#43
20050218993
2005-10-06

Fast-response current limiting

#44
20050200420
2005-09-15

Supply circuit for power amplifier drivers

#45
20050189995
2005-09-01

Multi-primary distributed active transformer amplifier power supply and control

#46
20050184813
2005-08-25

Multi-primary distributed active transformer oscillator power supply and control

#47
20050150687
2005-07-14

Perforating system and method

#48
20050062542
2005-03-24

Fast-response current limiting

#49
20050052244
2005-03-10

Fast-response current limiting

#50
20050024146
2005-02-03

High speed high gain amplifier

#51
20050024143
2005-02-03

Analog electronic device

#52
20050007177
2005-01-13

Method and circuit for perturbing removable singularities in coupled translinear loops

#53
15836191
2019-05-07

System and method for generating high-voltage radio frequency signals using an electronically tuned resonator