H03F2203/45571 - CPC Classification Index

ClassID:

220090 ⎘

H03F2203/45571 - 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 IC comprising two diodes, e.g. Gilbert circuit

Recent Application in this class:

20180316323

2018-11-01

Amplifier

20160173045

2016-06-16

Current sense amplifer with extended common mode input voltage range

20160173037

2016-06-16

Trimming method for current sense amplifiers

20150365059

2015-12-17

Class-D amplifier and electronic apparatus

20150171854

2015-06-18

Compensation circuit and compensation method

20150150753

2015-06-04

Instrumentation absolute value differential amplifier circuit and applications

20150028949

2015-01-29

High voltage input circuit for a differential amplifier

20120121106

2012-05-17

Distortion suppression in high-level capable audio amplification circuit

20110150243

2011-06-23

Charging circuit and amplifier

#10

20110029109

2011-02-03

Audio signal controller

#11

20110026739

2011-02-03

High level capable audio amplification circuit

#12

20060066383

2006-03-30

Log circuit and highly linear differential-amplifier circuit