ClassID:

233260

H05B41/2821 - CPC Classification

Classification description:

Circuit arrangements or apparatus for igniting or operating discharge lamps; Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage

Sub-classes:
Recent Application in this class:
#1
20150008836
2015-01-08

LED fluorescent lamp driving device driven by being connected to lamp stabilizer and LED fluorescent lamp having the driving device installed therein

#2
20140167649
2014-06-19

Double-output high-efficiency LED light-modulating circuit

#3
20130221854
2013-08-29

Dual-switch current converter

#4
20130147378
2013-06-13

Electronic ballast

#5
20120242244
2012-09-27

INVERTER DEVICE AND ILLUMINATION DEVICE FOR USE IN DISPLAY DEVICE INCORPORATING SAME AND DISPLAY DEVICE

#6
20120223653
2012-09-06

INVERTER DEVICE, DISPLAY APPARATUS LIGHTING DEVICE PROVIDED WITH SAME, AND DISPLAY APPARATUS

#7
20120161664
2012-06-28

Driving circuit and lighting equipment using the same

#8
20120139433
2012-06-07

Circuits and methods for driving light sources

#9
20110260634
2011-10-27

Electronic ballast circuit for fluorescent lamps

#10
20110068710
2011-03-24

ADJUSTING DEVICE FOR REGULATING THE ILLUMINATION OF A LAMP AND THE METHOD THEREOF

#11
20110063274
2011-03-17

BACKLIGHT ASSEMBLY AND DISPLAY APPARATUS HAVING THE SAME

#12
20100264831
2010-10-21

Lighting device and lighting fixture using the same

#13
20100244715
2010-09-30

Self-oscillating transformerless electronic ballast

#14
20100182810
2010-07-22

ALTERNATING-CURRENT POWER SUPPLY DEVICE

#15
20100134526
2010-06-03

DISPLAY DEVICE AND METHOD FOR DRIVING DISPLAY DEVICE

#16
20090295301
2009-12-03

Self-exciting step-up converter

#17
20090289569
2009-11-26

CCFL controller with multi-function terminal

#18
20090153072
2009-06-18

Inverter circuit

#19
20090134811
2009-05-28

Reduced power loss in electronic ballasts

#20
20090026974
2009-01-29

Fluorescent tube power supply and backlight

#21
20080265791
2008-10-30

Backlight module and current providing circuit thereof

#22
20080174251
2008-07-24

Single-ended DC to AC power inverter

#23
20080139008
2008-06-12

Backlight unit and liquid crystal display module including the same

#24
20080093996
2008-04-24

Multi-pulse ignition circuit for a gas discharge lamp

#25
20080084722
2008-04-10

Inverter circuit and backlight unit having the same

#26
20080067958
2008-03-20

Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display

#27
20080042967
2008-02-21

Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display

#28
20080012500
2008-01-17

Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display

#29
20070268239
2007-11-22

LCD backlight driving signal generator

#30
20070262843
2007-11-15

Structure for high voltage bearable transformers

#31
20070262842
2007-11-15

Transformer having a closed magnetic flux path

#32
20070228997
2007-10-04

Circuit arrangement for operating high-pressure discharge lamps and operating method for a high-pressure discharge lamp

#33
20070182345
2007-08-09

Monitor and power circuit thereof

#34
20070159212
2007-07-12

High efficiency two stage inverter

#35
20070120501
2007-05-31

Control circuit and method for driving a gas discharge lamp

#36
20070120500
2007-05-31

Back light assembly and display apparatus having the same

#37
20070052664
2007-03-08

Liquid crystal display device having an improved lighting device

#38
20060238140
2006-10-26

Electroluminescent lamp driving circuit and method

#39
20060197465
2006-09-07

Method and apparatus for single-ended conversion of DC to AC power for driving discharge lamps

#40
20060193152
2006-08-31

Current-mode resonant inverter circuit

#41
20060170374
2006-08-03

DC-DC converter with reduced surge voltage and an electronic ballast including the converter for a discharge lamp

#42
20060120109
2006-06-08

Inverter circuit, fluorescent bulb operating device, backlight device, and liquid crystal display device

#43
20060043905
2006-03-02

Device and method for detecting high voltage

#44
20060022608
2006-02-02

Electronic ballast having a reduced reverse voltage at the start

#45
20060018132
2006-01-26

High efficiency two stage inverter

#46
20060017406
2006-01-26

Push-pull driver with null-short feature

#47
20050285545
2005-12-29

Circuit arrangement and operating device for operating lamps

#48
20050264240
2005-12-01

Simplified electronic ballast circuit and method of operation

#49
20050258778
2005-11-24

Method and apparatus for single-ended conversion of DC to AC power for driving discharge lamps

#50
20050248523
2005-11-10

[A LCD LIGHTING CONTROL SYSTEM]

#51
20050237009
2005-10-27

Driving unit of fluorescent lamp and method for driving the same

#52
20050134198
2005-06-23

Method and system for driving a plasma-based light source

#53
20050104539
2005-05-19

High frequency electronic ballast with sine wave oscillator

#54
20050104537
2005-05-19

High frequency electronic ballast with sine wave oscillator

#55
20050088859
2005-04-28

Push-pull converter, in particular for driving cold-cathode fluorescent lamps

#56
20050088115
2005-04-28

Cold-cathode tube operating apparatus

#57
20050057163
2005-03-17

Rapid warmup light actuator

#58
20050030277
2005-02-10

Lamp assembly, back light assembly having the same, display device having the same, and method of driving lamps

#59
20050012468
2005-01-20

Scanning apparatus having a fluorescent lamp and control method thereof

#60
20050007800
2005-01-13

Inverter for providing power to lamp circuit