| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 04/09/2009 | US20090091268 Airfield lighting with led |
| 04/09/2009 | US20090091267 Backlight assembly and a display device having the same |
| 04/09/2009 | US20090091262 Discharge lamp lighting apparatus |
| 04/09/2009 | DE102008030412A1 Verfahren zur Steuerung eines Lampenvorschaltgeräts und Ansteuerschaltung Method for controlling a lamp ballast control and driver circuitry |
| 04/09/2009 | DE102007047534A1 Fluorescent lamp has retainer for fluorescent unit, and device, which is provided with two electrical impedance in two conditions, where latter impedance is smaller than former impedance |
| 04/09/2009 | DE102007047142A1 Gas discharge lamp type detecting method, involves detecting spiral coil current, measuring spiral coil voltage directly or indirectly, and comparing measured coil voltage or calculated resistance of spiral coil with standard values |
| 04/09/2009 | DE102007047141A1 Betriebsgerät zum Steuern des Einbrennvorganges einer Lampe Control unit for controlling the baking step of a lamp |
| 04/08/2009 | EP2046099A1 Electronic connection device for a lamp |
| 04/08/2009 | EP2046098A2 Fast run-up of metal halide lamp by power modulation at acoustic resonance frequency |
| 04/08/2009 | EP2046097A1 Super-high pressure mercury lamp |
| 04/08/2009 | EP2046096A1 Discharge lamp lighting device |
| 04/08/2009 | EP2045652A1 Backlight assembly and a display device having the same |
| 04/08/2009 | EP2044815A2 Thermal protection for lamp ballasts |
| 04/08/2009 | EP1844633B1 Circuit arrangement and method for the operation of a high-pressure gas discharge lamp |
| 04/08/2009 | EP1092260B1 Circuit for correcting the power factor |
| 04/08/2009 | CN201219323Y Remote control light modulating energy-saving lamp |
| 04/08/2009 | CN201219322Y Intelligent controller for road lamp |
| 04/08/2009 | CN201219321Y Electronic trigger equipment and HID lamp |
| 04/08/2009 | CN101404849A Remote control light modulating energy-saving lamp |
| 04/08/2009 | CN101404848A Electronic ballast and general lamp seat having the same |
| 04/08/2009 | CN101404847A Backlight assembly and a display device having the same |
| 04/08/2009 | CN101404460A Amplitude modulation type energy accumulation frequency conversion circuit |
| 04/08/2009 | CN101404447A Soft switch BUCK converter and its design method |
| 04/08/2009 | CN100477880C Protective electric circuit for fluorescent lamp |
| 04/08/2009 | CN100477879C Discharge lamp ignition device and image forming device |
| 04/08/2009 | CN100477878C Power supply circuit especially for discharge lamp |
| 04/08/2009 | CN100477877C Electronic ballast and operating method for a gas discharge lamp |
| 04/08/2009 | CN100477468C DC/AC converter and controller IC thereof |
| 04/08/2009 | CN100477070C Electrodeless lighting system and resonator of electrodeless lighting system |
| 04/07/2009 | US7515445 High-efficiency adaptive DC/AC converter |
| 04/07/2009 | US7515443 Inverter circuit |
| 04/07/2009 | US7514881 Discharge lamp lighting apparatus |
| 04/07/2009 | US7514879 Method and system for driving a plasma-based light source |
| 04/07/2009 | US7514878 High frequency electronic ballast with sine wave oscillator |
| 04/07/2009 | US7514876 Power source mounted to a fluorescent light |
| 04/02/2009 | WO2009041367A1 High-voltage discharge lamp lighting apparatus, high-voltage discharge lamp lighting method, and projector |
| 04/02/2009 | WO2009041261A1 Ac power supply device |
| 04/02/2009 | WO2009040874A1 Method for controlling cold-cathode tube in lighting apparatus, lighting apparatus, and liquid crystal display |
| 04/02/2009 | WO2009040192A1 High-pressure lamp and associated operating method for the resonance mode of high-pressure lamps in the longitudinal mode and associated system |
| 04/02/2009 | WO2009039879A1 Electronic operating device for operating at least one discharge lamp |
| 04/02/2009 | WO2005015705A3 Anti-cycling control system for luminaires |
| 04/02/2009 | US20090086485 LED louvers and lighting system |
| 04/02/2009 | US20090085502 Method and Apparatus for Maximizing the Sustainable Flash of a Handheld Portable Electronic Device |
| 04/02/2009 | US20090085500 Systems and methods for providing an oem level networked lighting system |
| 04/02/2009 | US20090085498 Electron emission device for back light unit and liquid crystal display thereof |
| 04/02/2009 | US20090085497 Skylight LED lighting system |
| 04/02/2009 | US20090085496 LED controller and lighting system |
| 04/02/2009 | US20090085495 Light source and projector |
| 04/02/2009 | US20090085494 Improvement to lighting systems |
| 04/02/2009 | US20090085493 Electronic Ballast for Discharge Lamps Having an Eol Monitoring Circuit |
| 04/02/2009 | US20090085492 Device for operating or starting a high-pressure discharge lamp lamp socket and illumination system wtih such a device and method for operation of a high-pressure discharge lamp |
| 04/02/2009 | US20090085491 Starter auxillary electrode starting device with an arc gap |
| 04/02/2009 | US20090085490 Light Emitting Diode Driver Circuit With Shunt Switch |
| 04/02/2009 | US20090085488 Backlight for electronic devices |
| 04/02/2009 | US20090085485 Display devices with ambient light sensing |
| 04/02/2009 | DE102007045071A1 Hochdrucklampe und zugehöriges Betriebsverfahren für den Resonanzbetrieb von Hochdrucklampen im longitudinalen Mode und zugehöriges System High-pressure lamp and associated operating method for resonant operation of high-pressure lamps in longitudinal mode and associated system |
| 04/02/2009 | CA2698278A1 High pressure discharge lamp ballast, high pressure discharge lamp driving method, and projector |
| 04/01/2009 | EP2043410A1 An electronic driver for a fluorescent lamp |
| 04/01/2009 | EP2043409A2 Light source and projector |
| 04/01/2009 | EP2043408A2 Control method and ballast for run-up of metal halide lamp |
| 04/01/2009 | EP2042005A2 Current balancing circuit |
| 04/01/2009 | EP1961276B1 Circuit arrangement and method for the operation of high-pressure gas discharge lamps |
| 04/01/2009 | CN201216041Y Light modulating energy-saving lamp suitable for one-touch control |
| 04/01/2009 | CN201216040Y Light modulation control signal generator for light modulation fluorescent lamp ballast |
| 04/01/2009 | CN201216039Y Harmonic eliminating passive compensator for non-linear lamp load |
| 04/01/2009 | CN101401489A Switch-off time regulator for an inverter for driving a lamp |
| 04/01/2009 | CN101401175A High voltage generation transformer for discharge lamp lighting device |
| 04/01/2009 | CN101400207A Automatic light modulation system and method for brightness control |
| 04/01/2009 | CN101400206A Power supply apparatus, light regulating circuit and light regulating method |
| 04/01/2009 | CN101400205A Light source driving device and control method thereof |
| 04/01/2009 | CN101400204A Light source and projector |
| 04/01/2009 | CN101400203A Electronic ballast for gas discharging lamp |
| 04/01/2009 | CN101398566A Backlight module device and assembling method thereof |
| 04/01/2009 | CN100475014C Operating circuit for a lamp with a heat sink |
| 04/01/2009 | CN100474998C Quasi continuous light generating power supply of single flash light sun analogue device |
| 04/01/2009 | CN100474997C Circuit arrangement for operating a lamp |
| 04/01/2009 | CN100474996C Evg units which may be wired in parallel due to lamp type |
| 04/01/2009 | CN100474462C Transformer and lamp tube driving system using the same |
| 04/01/2009 | CN100474044C Power supply system and liquid crystal display device having the same |
| 03/31/2009 | US7511432 Discharge lamp lighting device, illumination device, and projector |
| 03/26/2009 | WO2009038043A1 Lighting device, back light unit, and liquid crystal display device |
| 03/26/2009 | WO2009036935A1 Operating device for illumination means having different operating parameters and a method for configuring the same |
| 03/26/2009 | WO2009036795A1 Improved applicability of lamps with electronic ballast without a protective earth conductor |
| 03/26/2009 | WO2009036515A1 Improved start-up detection in a dimmer circuit |
| 03/26/2009 | US20090079367 Software Controlled Electronic Dimming Ballast |
| 03/26/2009 | US20090079366 Fast run-up of metal halide lamp by power modulation at acoustic resonance frequency |
| 03/26/2009 | US20090079365 Control method and ballast for run-up of metal halide lamp |
| 03/26/2009 | US20090079362 Regulation of Wavelength Shift and Perceived Color of Solid State Lighting with Intensity and Temperature Variation |
| 03/26/2009 | US20090079361 Method and device for driving a discharge lamp |
| 03/26/2009 | US20090079360 System and Method for Regulation of Solid State Lighting |
| 03/26/2009 | US20090079359 System and Method for Regulation of Solid State Lighting |
| 03/26/2009 | US20090079358 Regulation of Wavelength Shift and Perceived Color of Solid State Lighting with Temperature Variation |
| 03/26/2009 | US20090079357 Regulation of Wavelength Shift and Perceived Color of Solid State Lighting with Intensity Variation |
| 03/26/2009 | US20090079356 Ac/dc lamp holder |
| 03/26/2009 | US20090079355 Digital Driver Apparatus, Method and System for Solid State Lighting |
| 03/26/2009 | US20090079354 Electronic ballast with low voltage output |
| 03/26/2009 | US20090079348 Discharge lamp lighting apparatus and discharge lamp lighting control method |
| 03/25/2009 | EP2040516A1 Dimmer noise reducing circuit of piezoelectric transformer |
| 03/25/2009 | EP2040515A1 Electric discharge lamp device and lighting apparatus |
| 03/25/2009 | EP2039230A1 Portable communication device equipped with an electronic flash having a led ignition device |