H03F2203/45281 - CPC Classification Index

ClassID:

219945 ⎘

H03F2203/45281 - 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 One SEPP output stage being added to the differential amplifier

Recent Application in this class:

20230077479

2023-03-16

HIGH-EFFICIENCY AMPLIFIER ARCHITECTURE WITH DE-GAIN STAGE

20170230005

2017-08-10

Ultra-low working voltage rail-to-rail operational amplifier, and differential input amplification-stage circuit and output-stage circuit thereof

20170214365

2017-07-27

Audio amplifier

20170213831

2017-07-27

Operational amplifier circuit

20080111626

2008-05-15

Rail-to-rail class-AB operational amplifier

20080088616

2008-04-17

Buffer amplifier, driver IC and display apparatus using that driver IC

20080055004

2008-03-06

Amplifiers, methods of increasing current gain in amplifiers, and imaging devices

20070159249

2007-07-12

Differential amplifier and display device using the same

20070159248

2007-07-12

Differential amplifier, data driver and display device