| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 01/23/2008 | CN101112130A Method for operating a high-pressure discharge lamp, operating appliance for a high-pressure discharge lamp, and illumination device |
| 01/23/2008 | CN101112129A Method of controlling cathode voltage with low lamp's arc current |
| 01/23/2008 | CN101112128A Circuit arrangement and method for the operation of a high-pressure gas discharge lamp |
| 01/23/2008 | CN101112127A Circuit arrangement for a starting unit of a discharge lamp |
| 01/23/2008 | CN101112126A Distributed intelligence ballast system and extended lighting control protocol |
| 01/23/2008 | CN101111116A Automatic switching system for train crossing light of vehicle at night |
| 01/23/2008 | CN101111115A Filament control device for hot-cathode electric ballast and design method thereof |
| 01/23/2008 | CN101111114A 放电灯点亮电路 The discharge lamp lighting circuit |
| 01/23/2008 | CN101111113A Multi-light tube driving circuit |
| 01/23/2008 | CN101111112A Mixed triggering circuit used for air discharging lamp |
| 01/23/2008 | CN101111111A High efficiency adaptable AC/DC converter |
| 01/23/2008 | CN101110553A Power supply apparatus using coil |
| 01/23/2008 | CN101110343A Small power electromagnetic induction lamp |
| 01/23/2008 | CN100364368C Device for operating high-pressure discharge lamp |
| 01/23/2008 | CN100363819C Back light unit using external electrode fluorescent lamp |
| 01/23/2008 | CN100363811C Surface shaped luminous source construction |
| 01/23/2008 | CN100363793C Liquid crystal display device, and light source driving circuit and method to be used in same |
| 01/22/2008 | US7321207 Inverter apparatus and liquid crystal display including inverter apparatus |
| 01/22/2008 | US7321203 LED dimming control technique for increasing the maximum PWM dimming ratio and avoiding LED flicker |
| 01/22/2008 | US7321202 System and method for reducing flicker of compact gas discharge lamps at low lamp light output level |
| 01/22/2008 | US7321201 Basic halogen convertor IC |
| 01/22/2008 | US7321200 Square wave drive system |
| 01/17/2008 | US20080013309 Elongated Electro-Optic Device |
| 01/17/2008 | US20080012692 Systems and methods for providing spectral feedback to visually convey a quantitative value |
| 01/17/2008 | US20080012510 Backlight module and digital programmable control circuit thereof |
| 01/17/2008 | US20080012509 Electrical energy discharge control |
| 01/17/2008 | US20080012508 Protection circuit and method |
| 01/17/2008 | US20080012505 Electronic Blast with Remote Capacitor Placement |
| 01/17/2008 | US20080012504 Arc lamp circuit |
| 01/17/2008 | US20080012503 Power control of a fluorescent lamp |
| 01/17/2008 | US20080012502 Led power control methods and apparatus |
| 01/17/2008 | US20080012500 Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display |
| 01/17/2008 | DE102007024486A1 Schaltung zur Bestimmung des Lebensdauerendes von Leuchtstofflampen Circuit for determining the end of life of fluorescent lamps |
| 01/16/2008 | EP1879433A1 Lamp |
| 01/16/2008 | EP1879432A1 Discharge lamp lighting apparatus |
| 01/16/2008 | EP1878323A1 Brightness control of fluorescent lamps |
| 01/16/2008 | EP1878322A2 Electronic lamp identification system |
| 01/16/2008 | EP1878321A1 Control device for a discharge lamp |
| 01/16/2008 | CN201008231Y Vehicle xenon headlight fixing device |
| 01/16/2008 | CN201008230Y Three-terminal serial trigger |
| 01/16/2008 | CN201008229Y Electronic starter for fluorescent lamp |
| 01/16/2008 | CN201004929Y 孔明诱虫灯 Ming trap lamp |
| 01/16/2008 | CN101107887A Backlight control apparatus and display apparatus |
| 01/16/2008 | CN101106860A An automatic photoelectrical controller for controlling lighting device |
| 01/16/2008 | CN101106859A Resonance ballast and its switching circuit |
| 01/16/2008 | CN101106857A Light control system |
| 01/16/2008 | CN101106065A Ultraviolet lamp system with cooling air controller |
| 01/16/2008 | CN101106016A Modified double power ballast |
| 01/16/2008 | CN101106012A Inverter transformer and discharge tube drive circuit using the same |
| 01/16/2008 | CN101105603A Liquid crystal display backlight inverter |
| 01/16/2008 | CN101105280A Integral detachable daylight lamp |
| 01/16/2008 | CN100362615C Luminous device of superhigh voltage mercury light |
| 01/15/2008 | US7319297 Balanced current lamp module and multi-lamp circuit |
| 01/15/2008 | US7319296 Device for driving lamps |
| 01/15/2008 | CA2334418C Power supply for lamps |
| 01/10/2008 | WO2008006091A2 Method and apparatus for dc swithching lamp driver |
| 01/10/2008 | WO2006096638A3 Automotive high intensity discharge lamp ballast circuit |
| 01/10/2008 | WO2005101921A8 Pfc and ballast control ic |
| 01/10/2008 | US20080007188 Starting circuit for electric discharge lamp |
| 01/10/2008 | US20080007187 Method and apparatus for dc switching lamp driver |
| 01/10/2008 | US20080007186 Backlight modulation circuit |
| 01/10/2008 | US20080007185 Light system with dielectric barrier discharge lamp, operating device and connection cable |
| 01/10/2008 | US20080007184 Gas Discharge Lamp Driving Method |
| 01/10/2008 | US20080006253 Electronic high frequency plasma catalyzer |
| 01/10/2008 | DE10357293B4 Lampensteuervorrichtung und Verfahren zum Betrieb einer Lampensteuervorrichtung Lamp control apparatus and method for operating a lamp control device |
| 01/09/2008 | EP1876869A2 Inverter driving circuit |
| 01/09/2008 | EP1876868A1 Discharge lamp lighting apparatus and discharge lamp lighting control method |
| 01/09/2008 | EP1876633A1 Plasma lamp with means to generate in its bulb a resonant ultrasound wave |
| 01/09/2008 | EP1875783A1 Current driver circuit and method of operation therefor |
| 01/09/2008 | EP1523866B1 Method and device for identifying the type of discharge lamp |
| 01/09/2008 | CN201004730Y DC constant voltage and current power supply for high voltage gas laser discharge device |
| 01/09/2008 | CN201004728Y Coupling lamp tube drive device |
| 01/09/2008 | CN201004370Y Load current balance device |
| 01/09/2008 | CN101102636A Input current limit circuit and its light source drive device |
| 01/09/2008 | CN101102635A Lamp tube current feedback and open circuit protection circuit |
| 01/09/2008 | CN101102634A Inverter driving circuit |
| 01/09/2008 | CN101102633A Electronic ballast |
| 01/09/2008 | CN101102632A Discharge tube lighting apparatus |
| 01/09/2008 | CN101101854A Discharge lamp with outer electrodes on a printed circuit board |
| 01/09/2008 | CN101101851A High-performance energy-saving long life fluorescent lamp |
| 01/09/2008 | CN100361009C Brightness control device of LCD and method thereof |
| 01/09/2008 | CN100360951C Method and device for checking remaining quantity of battery |
| 01/08/2008 | US7317286 Power supply apparatus for discharge lamp and control method for the same |
| 01/03/2008 | WO2008003036A2 Systems and methods for providing spectral feedback to visually convey a quantitative value |
| 01/03/2008 | WO2008002162A1 Method of brightness control of fluorescent lamp and device for brightness control of fluorescent lamp |
| 01/03/2008 | WO2008001519A1 Electric discharge lamp device and lighting apparatus |
| 01/03/2008 | WO2008001506A1 Dimmer noise reducing circuit of piezoelectric transformer |
| 01/03/2008 | WO2008001245A1 Method and system for operating a discharge lamp such as to detect defective operation of the lamp |
| 01/03/2008 | US20080001726 Building alarm system with synchronized strobes |
| 01/03/2008 | US20080001572 Vehicle interface |
| 01/03/2008 | US20080001556 Circuit and method for sensing open-circuit lamp of a backlight unit and display device with circuit for sensing open-circuit lamp of backlight unit |
| 01/03/2008 | US20080001555 Backlight control circuit with feedback circuit |
| 01/03/2008 | US20080001554 Limited current circuit of digital inverter for LCD backlight |
| 01/03/2008 | US20080001553 Gate driver topology for maximum load efficiency |
| 01/03/2008 | US20080001550 Multi-Lamp Driver With Active Current Regulator |
| 01/03/2008 | US20080001549 Status indicator lens and light pipe structure for a dimmer switch |
| 01/03/2008 | US20080001548 Circuit Arrangement for a Starting Unit of a Discharge Lamp |
| 01/03/2008 | US20080001321 Dual lamp system |
| 01/03/2008 | DE19537883B4 Ansteuerungssystem zum Zünden bzw. Betreiben von Hochdruckentladungslampen Control system for igniting and operating high-pressure discharge lamps |
| 01/03/2008 | DE102007029442A1 Entladungslampen-Lichtstromkreis A discharge lamp lighting circuit |