ClassID:

220064

H03F2203/45518 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by; Indexing scheme relating to differential amplifiers the FBC comprising one or more diodes and being coupled between the LC and the IC

Recent Application in this class:
#1
20250192731
2025-06-12

AMPLIFIER DEVICE FOR AMPLIFYING SMALL CURRENTS

#2
20190339305
2019-11-07

Non-linear active shunt ammeter

#3
20190334482
2019-10-31

Wide dynamic range auto-AGC transimpedance amplifier

#4
20190253024
2019-08-15

Flame scanner having non-linear amplifier with temperature compensation

#5
20190242929
2019-08-08

Current detection circuit

#6
20190131462
2019-05-02

Pseudo-resistor structure, a closed-loop operational amplifier circuit and a bio-potential sensor

#7
20140334209
2014-11-13

Radio frequency power source having precise power detector

#8
20140300403
2014-10-09

Signal processing device

#9
20140284493
2014-09-25

Preamplifier for charged particle detection

#10
20130147560
2013-06-13

LOW NOISE AMPLIFIER WITH BACK-TO-BACK CONNECTED DIODES AND BACK-TO-BACK CONNECTED DIODE WITH HIGH IMPEDANCE THEREOF

#11
20120229811
2012-09-13

High-linearity signal-processing amplifier

#12
20120086434
2012-04-12

Wide-dynamic range electrometer with a fast response

#13
20120075015
2012-03-29

Amplifier and method for linearizing same

#14
20120014541
2012-01-19

AMPLIFYING DEVICE FOR CONDENSER MICROPHONE

#15
20110221526
2011-09-15

Method and apparatus for a gain control circuit via a high frequency signal

#16
20110181362
2011-07-28

Signal processing circuit

#17
20110175583
2011-07-21

High voltage regulated power supply

#18
20110012588
2011-01-20

Wide-dynamic range electrometer with a fast response

#19
20100171554
2010-07-08

Offset cancellation for DC isolated nodes

#20
20100123983
2010-05-20

Operational amplifier circuit and arc fault circuit interrupter including the same

#21
20090174483
2009-07-09

GAIN-CONTROLLED LOW NOISE AMPLIFIER MEANS

#22
20090167407
2009-07-02

Operational amplifier and integrating circuit

#23
20080237354
2008-10-02

Semiconductor integrated circuit device

#24
20080197271
2008-08-21

Temperature-compensated high dynamic range optical receiver

#25
20080180135
2008-07-31

Hysteresis circuit applied to comparator and amplifier circuit thereof

#26
20080157846
2008-07-03

DC offset calibration apparatus and method

#27
20080101803
2008-05-01

High dynamic range optical receiver

#28
20070273411
2007-11-29

Amplifier with pulse coded output and remote signal reconstruction from the pulse output

#29
20070216474
2007-09-20

Filter circuit