ClassID:

233254

H05B41/245 - CPC Classification

Classification description:

Circuit arrangements or apparatus for igniting or operating discharge lamps; Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency for a plurality of lamps

Recent Application in this class:
#1
20230025489
2023-01-26

Image forming apparatus that fixes toner image to recording medium using first and second heaters supplied with current during overlapping time periods

#2
20160205755
2016-07-14

Driving device and illumination system

#3
20160143117
2016-05-19

Embedded lighting ceiling tiles with an adaptive ceiling luminance distribution

#4
20150366033
2015-12-17

Illuminating display systems

#5
20140225515
2014-08-14

Illuminating display systems

#6
20130106300
2013-05-02

Passive LC ballast and method of manufacturing a passive LC ballast

#7
20120286684
2012-11-15

Controlled power dissipation in a switch path in a lighting system

#8
20120169230
2012-07-05

Illuminating display systems

#9
20120074861
2012-03-29

Apparatuses for providing power for illumination of a display object

#10
20110234112
2011-09-29

Lamp driving circuit

#11
20110181204
2011-07-28

Balancing transformers for multi-lamp operation

#12
20100283395
2010-11-11

Multi-feed RF distribution systems and methods

#13
20100225254
2010-09-09

Cold cathode lamp, and illumination device for display device and display device provided therewith

#14
20100225253
2010-09-09

Cold-cathode lamp, and display illumination device and display device therewith

#15
20100194313
2010-08-05

HIGH VOLTAGE ELECTRICAL CONNECTION LINE

#16
20100014336
2010-01-21

DC-AC converter and method of supplying AC power

#17
20090284179
2009-11-19

Apparatuses for providing power for illumination of a display object

#18
20090284164
2009-11-19

Illuminating display systems

#19
20090267521
2009-10-29

Balancing transformers for multi-lamp operation

#20
20090224696
2009-09-10

Electronic ballast with higher startup voltage

#21
20090174644
2009-07-09

Liquid crystal display device having an improved backlight

#22
20090167208
2009-07-02

METHOD FOR SUPPLYING A DC LOAD VIA MULTIPLE PARALLEL POWER SUPPLIES AND A POWER SUPPLY THEREFOR

#23
20090146581
2009-06-11

GAS DISCHARGE LAMP DRIVER CIRCUIT WITH LAMP SELECTION PART

#24
20090115342
2009-05-07

Lighting system for illumination using cold cathode fluorescent lamps

#25
20090033234
2009-02-05

Illuminating lamp for a display device, an illuminating device for a display device, and a display device

#26
20080285321
2008-11-20

DC-AC converter and method of supplying AC power

#27
20080211423
2008-09-04

Multiple-light discharge lamp lighting device

#28
20080203938
2008-08-28

Block Dimming for Hid Lamps

#29
20080129227
2008-06-05

Discharge tube lighting circuit and electronic apparatus provided with the discharge tube lighting circuit

#30
20080129218
2008-06-05

Multiple discharge lamp lighting apparatus

#31
20080067951
2008-03-20

Backlight circuit for LCD panel

#32
20080061712
2008-03-13

Uniform Back-Lighting Device And Display Device Therewith

#33
20080061711
2008-03-13

Balancing transformers for multi-lamp operation

#34
20080042589
2008-02-21

Inverter and inverter unit thereof

#35
20080037291
2008-02-14

DC-AC converter and method of supplying AC power

#36
20080012505
2008-01-17

Electronic blast with remote capacitor placement

#37
20070190890
2007-08-16

Lamp circuit of liquid crystal device backlight source

#38
20070182702
2007-08-09

Liquid crystal display device having an improved backlight

#39
20070182343
2007-08-09

Lamp driving apparatus having balance circuit units for a display

#40
20070159117
2007-07-12

Backlight module control circuit of multi-lamp display device

#41
20070159115
2007-07-12

Apparatus for driving lamps and liquid crystal display having the same

#42
20070159112
2007-07-12

Lamp driving device and method

#43
20070152605
2007-07-05

Device for driving light sources

#44
20070152598
2007-07-05

METHOD FOR INCREASING PROFIT IN A BUSINESS TO MAINTAIN LIGHTING OPERATIONS IN AN OFFICE BUILDING OR OTHER PLACE OF BUSINESS

#45
20070126370
2007-06-07

Inverter circuit, backlight assembly, and liquid crystal display with backlight assembly

#46
20070126369
2007-06-07

Apparatus for driving a plurality of lamps

#47
20070110111
2007-05-17

Power system for ultraviolet lighting

#48
20070076459
2007-04-05

Apparatus for supplying energy to a load and a related system

#49
20070024211
2007-02-01

Constant current class 3 lighting system

#50
20070001617
2007-01-04

Electronic lighting ballast

#51
20060284573
2006-12-21

System for Controlling and Regulating Continuously the Luminous Flow of Every Single Lamp Derived on a Parallel Line

#52
20060261758
2006-11-23

Limited open circuit voltage ballast

#53
20060239038
2006-10-26

DC-AC converter and method of supplying AC power

#54
20060113923
2006-06-01

Charge pump interface circuit

#55
20060087254
2006-04-27

Multi-lamp tube controlling circuit

#56
20060076907
2006-04-13

Multi-phase multi-lamp driving system

#57
20060017399
2006-01-26

Discharge lamp lighting apparatus for lighting multiple discharge lamps

#58
20050280625
2005-12-22

Liquid crystal display device having an improved backlight

#59
20050269976
2005-12-08

LCD back light panel lamp connecting structure

#60
20050269975
2005-12-08

LCD back light panel lamp connecting structure

#61
20050237010
2005-10-27

Architecture of power supply system for LCD apparatus

#62
20050200308
2005-09-15

Constant current Class 3 lighting system

#63
20050184685
2005-08-25

Lamp ballast for circuit driving multiple parallel lamps

#64
20050151426
2005-07-14

Electronic ballasts which can be connected in parallel on the basis of the type of lamp

#65
20050151424
2005-07-14

Device and method for driving a plurality of loads

#66
20050128666
2005-06-16

Electronic lighting ballast

#67
20050127851
2005-06-16

Apparatus and method for driving lamp of liquid crystal display device

#68
20050116662
2005-06-02

Method and apparatus for optimizing power efficiency in light emitting device arrays

#69
20050093472
2005-05-05

Balancing transformers for ring balancer

#70
20050093471
2005-05-05

Current sharing scheme for multiple CCF lamp operation

#71
20050047176
2005-03-03

Dc/ac conversion device and ac power supply method

#72
20050012463
2005-01-20

One-to-many compact fluorescent lamp holder structure

#73
14539804
2016-03-22

Multifunction magnetic device with multiple cores and coils