H05B41/392 - CPC Classification Index

ClassID:

233294 ⎘

H05B41/392 - CPC Classification

Classification description:

Circuit arrangements or apparatus for igniting or operating discharge lamps; Circuit arrangements; Controlling; Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor

Sub-classes:

H05B41/3921 » {with possibility of light intensity variations} 162

Recent Application in this class:

20230047388

2023-02-16

Magnetic induction circuit, magnetic-controlled switch circuit, circuit board, magnetic-controlled device, and magnetic-controlled lamp

20220070981

2022-03-03

Light source device, lighting circuit, and driving method

20210321502

2021-10-14

Dimmer with improved noise immunity

20190069382

2019-02-28

Methods and systems for controlling an electrical load

20180255629

2018-09-06

Methods and systems for controlling an electrical load

20170295632

2017-10-12

Multi-channel dual-mode digital control LED driving circuit and LED lamp

20160381774

2016-12-29

Methods and systems for controlling an electrical load

20160360600

2016-12-08

Discharge lamp driving device, projector, and discharge lamp driving method

20160338183

2016-11-17

Discharge lamp lighting apparatus

#10

20160249440

2016-08-25

Discharge lamp driving device, projector, and discharge lamp driving method

#11

20150181682

2015-06-25

Bypass circuit for neutral-less controller in lighting control system

#12

20150170581

2015-06-18

Backlight module with 2D/3D backlight switching unit and display device comprising the backlight module

#13

20140239836

2014-08-28

Controlling an electronic dimming ballast during low temperature or low mercury conditions

#14

20140217920

2014-08-07

Toggle switch and variable actuator control

#15

20140111106

2014-04-24

Ballast with temperature compensation

#16

20140022756

2014-01-23

Solar simulator

#17

20130293120

2013-11-07

LUMINENCE CONTROL OF GAS-DISCHARGE LAMPS

#18

20130162168

2013-06-27

Timer-based switching circuit synchronization in an electrical dimmer

#19

20130106303

2013-05-02

DIMMING CONTROL METHOD AND APPARATUS

#20

20130043726

2013-02-21

Method and apparatus for TRIAC applications

#21

20130009562

2013-01-10

Method and device for driving a gas discharge lamp

#22

20120268020

2012-10-25

Hybrid light source

#23

20120081037

2012-04-05

Circuit and lighting system for dimming an illuminant

#24

20110204822

2011-08-25

Device and method for providing power to gas discharge lamp

#25

20110080107

2011-04-07

Dimming a multi-lamp fluorescent light fixture by turning off an individual lamp using a wireless fluorescent lamp starter

#26

20110025231

2011-02-03

Method and apparatus for retrofitting HID lamps with system to periodically adjust operating wattage

#27

20100253233

2010-10-07

Discharge lamp lighting device and light fixture

#28

20100164397

2010-07-01

Dimmer device with feedback function

#29

20100141158

2010-06-10

Hybrid light source

#30

20100128016

2010-05-27

Lighting device for cold-cathode tube and control method thereof

#31

20100066260

2010-03-18

Hybrid light source

#32

20090206775

2009-08-20

Constant lumen output control system

#33

20090122581

2009-05-14

Alternating current power supply device and integrated circuit for alternating current power supply device

#34

20090058312

2009-03-05

ENERGY EFFICIENT FLUORESCENT LAMP

#35

20080258637

2008-10-23

LIGHT EMITTING ELEMENT DRIVER AND CONTROL METHOD THEREFOR

#36

20080211417

2008-09-04

Stepless dimming fluorescent lamp and ballast thereof

#37

20080174248

2008-07-24

Lighting module power-saving control method

#38

20080158916

2008-07-03

DC-AC converter and controller IC therefor

#39

20080094001

2008-04-24

Power supply apparatus, backlight assembly and liquid crystal display apparatus having the same

#40

20080084168

2008-04-10

Dimmable, high power factor ballast for gas discharge lamps

#41

20080068002

2008-03-20

Specific phase position detection

#42

20080067956

2008-03-20

Lamp Power Circuit Sensing Method And System

#43

20080030150

2008-02-07

Lamp driving circuit for a discharge lamp and a control method thereof

#44

20070217240

2007-09-20

Frequency feedforward for constant light output in backlight inverters

#45

20070211499

2007-09-13

DC-AC converter and controller IC therefor

#46

20070070571

2007-03-29

Apparatus and method for compensating for reduced light output of a light source having a lumen depreciation characteristic over its operational life

#47

20070052373

2007-03-08

Circuit designs and control techniques for high frequency electronic ballasts for high intensity discharge lamps

#48

20060245220

2006-11-02

DC-AC converter and controller IC therefor

#49

20060239042

2006-10-26

DC-AC converter and controller IC therefor

#50

20060176700

2006-08-10

Method and apparatus for retrofitting HID lamps with system to periodically adjust operating wattage

#51

20060176695

2006-08-10

Energy efficient high intensity lighting fixture and method and system for efficient, effective, and energy saving high intensity lighting

#52

20060175987

2006-08-10

Retro-fit method for improving longevity of arc lamps

#53

20060139013

2006-06-29

Power supply apparatus, backlight assembly and liquid crystal display apparatus having the same

#54

20060114703

2006-06-01

Frequency feedforward for constant light output in backlight inverters

#55

20060055344

2006-03-16

Discharge lamp lighting circuit and method

#56

20060049772

2006-03-09

Circuit arrangement for dimming at least one lamp

#57

20050285478

2005-12-29

Driving circuit for piezoelectric transformer, cold-cathode tube light-emitting apparatus, liquid crystal panel and device with built-in liquid crystal panel

#58