| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 09/10/2009 | US20090225014 Control of semiconductor light emitting element |
| 09/10/2009 | US20090224697 Driving method of light source apparatus for projector |
| 09/10/2009 | US20090224696 Electronic ballast with higher startup voltage |
| 09/10/2009 | US20090224687 Brightness control apparatus of light bulb module |
| 09/10/2009 | US20090224686 Semiconductor circuit for driving light emitting diode, and light emitting diode driving apparatus |
| 09/10/2009 | US20090224684 Circuit Arrangement and Method for the Operation of High-Pressure Gas Discharge Lamps |
| 09/10/2009 | US20090224682 Discharge lamp lighting circuit |
| 09/10/2009 | US20090224674 Ceramic high intensity discharge lamp having uniquely shaped shoulder |
| 09/10/2009 | US20090224186 Dual opto-coupler optical isolation circuit |
| 09/10/2009 | US20090224136 Light source device, image display apparatus, and light amount correcting method |
| 09/10/2009 | DE202009006038U1 Dimmerschaltung Dimmer circuit |
| 09/10/2009 | DE102009009496A1 Betriebsgerät für Leuchtmittel Operating device for lamps |
| 09/10/2009 | DE102008022198A1 Typerkennung einer mit einem elektronischen Vorschaltgerät zu betreibenden Gasentladungslampe Type a detection with an electronic ballast to be operated gas discharge lamp |
| 09/10/2009 | DE102008012454A1 Method for determining operational parameters of gas discharge lamp operated with electronic ballast, involves determining cold resistance and hot resistance of helices at two different times during preheating phase |
| 09/10/2009 | DE102008012453A1 Verfahren zum Prüfen, ob mindestens zwei mit einem elektronischen Vorschaltgerät zu betreibende Gasentladungslampen vom gleichen Typ sind Method for testing whether at least two are with an electronic ballast to be operated gas discharge lamps of the same type |
| 09/10/2009 | DE102008012452A1 Schaltung zum Beheizen und Überwachen der Heizwendeln mindestens einer mit einem elektronischen Vorschaltgerät betriebenen Gasentladungslampe auf Wendelbruch Circuit for heating and monitoring of the heating coils at least one operated with an electronic ballast gas discharge lamp filament breakage |
| 09/09/2009 | EP2099263A1 Discharge lamp lighting circuit |
| 09/09/2009 | EP2099262A1 Lamp malfunction detecting device and inverter equipped with the same, back lighting device and display device |
| 09/09/2009 | EP2099261A1 Discharge lamp lighting device, and image display device |
| 09/09/2009 | EP2098100A2 Power source apparatus |
| 09/09/2009 | EP1817944B1 High intensity discharge lamp driver with voltage feedback controller |
| 09/09/2009 | CN201307966Y Ballast of fluorescent lamp |
| 09/09/2009 | CN201307965Y Novel high voltage sodium lamp electronic ballast |
| 09/09/2009 | CN201307964Y Electronic ballast for high voltage sodium lamp and metal halide lamp |
| 09/09/2009 | CN201307963Y Electronic ballast specially used for electrodeless lamp |
| 09/09/2009 | CN201307962Y Electronic energy-saving light with buffering protection function |
| 09/09/2009 | CN101529993A Ballast with arc protection circuit |
| 09/09/2009 | CN101529992A Device for driving a gas discharge lamp |
| 09/09/2009 | CN101529991A Circuit arrangement and method for starting a discharge lamp |
| 09/09/2009 | CN101529990A Display device and luminance control method |
| 09/09/2009 | CN101529989A Cold cathode tube lamp |
| 09/09/2009 | CN101529988A Discharge lamp lighting device, and image display device |
| 09/09/2009 | CN101529987A Discharge lamp lighting apparatus |
| 09/09/2009 | CN101529986A High-pressure discharge lamp, lighting equipment, and high-pressure discharge lamp device |
| 09/09/2009 | CN101529985A Circuit arrangement and method for igniting a high-pressure discharge lamp |
| 09/09/2009 | CN101527997A Two-grade full-bridge mode low-frequency square-wave driven HID lamp electronic ballast |
| 09/09/2009 | CN101527996A Discharge lamp lighting circuit |
| 09/09/2009 | CN101527995A Multi-lamp driver with active current regulator |
| 09/09/2009 | CN101527252A Electromagnetic induction lamp with assistant starting conduction band |
| 09/09/2009 | CN101527121A Liquid crystal display and method for improving water ripple phenomenon |
| 09/09/2009 | CN101526726A Driving method of light source apparatus for projector |
| 09/09/2009 | CN100539800C Circuit arrangement |
| 09/09/2009 | CN100539799C Circuit arrangement |
| 09/09/2009 | CN100539798C Electronic stabilizing apparatus |
| 09/09/2009 | CN100539797C Lighting device of discharge lamp |
| 09/09/2009 | CN100539796C Active matrix current adjustment circuit |
| 09/09/2009 | CN100539795C Electronic ballast for a lamp to be operated with iterative voltage pulses |
| 09/09/2009 | CN100539794C Power supply device, discharge lamp igniting device and lighting device |
| 09/09/2009 | CN100539791C Light modulator |
| 09/09/2009 | CN100539380C DC-AC converter, its controller IC, and electronic apparatus using the DC-AC converter |
| 09/09/2009 | CN100539379C Resonant inverter including feed back circuit with source of variable bias current |
| 09/09/2009 | CN100538991C Metal halide lamp and lighting apparatus using the same |
| 09/08/2009 | US7586270 Circuit and method for the operation of miniature high pressure short-arc lamps using alternating current |
| 09/08/2009 | US7586269 Device for driving light source module |
| 09/08/2009 | US7586268 Apparatus and method for controlling the filament voltage in an electronic dimming ballast |
| 09/03/2009 | WO2009108441A1 Dimmable instant start ballast |
| 09/03/2009 | WO2009107503A1 Discharge lamp control circuit with ground fault protection function |
| 09/03/2009 | WO2009107460A1 Lighting device, display device, and television receiving device |
| 09/03/2009 | WO2009106120A1 Device and method for generating an ignition voltage for a lamp |
| 09/03/2009 | WO2008135938A3 Method and circuit for pulsed fluorescent lamp operation |
| 09/03/2009 | US20090219464 Control system for light tubes |
| 09/03/2009 | US20090218961 Power sensing in a flashlight |
| 09/03/2009 | US20090218959 Fuel configure ballast |
| 09/03/2009 | US20090218958 Display panel drive apparatus |
| 09/03/2009 | US20090218957 Methods, apparatuses, and computer program products for conserving power in mobile devices |
| 09/03/2009 | US20090218955 Method of driving discharge lamp, driving device, and projector |
| 09/03/2009 | US20090218954 Sequential burst mode actlvation circuit |
| 09/03/2009 | US20090218953 Dimmable instant start ballast |
| 09/02/2009 | EP2095692A1 Circuit arrangement and method for igniting a high-pressure discharge lamp |
| 09/02/2009 | EP2095691A2 Electrodeless lamps with high viewing angle of the plasma arc |
| 09/02/2009 | CN201303455Y Digital high-voltage sodium lamp electronic ballast |
| 09/02/2009 | CN201303454Y Single lamp driving circuit of high voltage board |
| 09/02/2009 | CN101523999A Electronic circuit and method for reducing total harmonic distortion caused by fluorescent lamp dimming |
| 09/02/2009 | CN101523998A Lamp driving circuit, and detection circuit for detecting an end-of-life condition |
| 09/02/2009 | CN101523997A Circuit arrangement, and method for the operation of a high-pressure discharge lamp |
| 09/02/2009 | CN101523996A Circuit arrangement for firing a discharge lamp |
| 09/02/2009 | CN101523995A Circuit arrangement and method for operating a discharge lamp with preheatable electrodes |
| 09/02/2009 | CN101523994A Frequency synchronizing method for discharge tube lighting apparatus, discharge tube lighting apparatus, and semiconductor integrated circuit |
| 09/02/2009 | CN101523993A Discharge tube lighting apparatus synchronous operation system, discharge tube lighting apparatus, and semiconductor integrated circuit |
| 09/02/2009 | CN101521978A Adjustable-light output circuit and electronic ballast used for a lamp |
| 09/02/2009 | CN101521977A Voltage testing circuit and CCFL converter system with voltage testing circuit |
| 09/02/2009 | CN101521976A All-digital auto rectifier |
| 09/02/2009 | CN101521975A Deuterium lamp power control circuit used for atomic absorption spectrophotometer |
| 09/02/2009 | CN101520995A Drive method of LCD backlight modules |
| 09/02/2009 | CN101520596A Projector |
| 09/02/2009 | CN101520573A Liquid crystal display device |
| 09/02/2009 | CN100536633C Control device for operating a plurality of lamps |
| 09/02/2009 | CN100536632C Discharge lamp igniting apparatus and lighting apparatus equipped with same |
| 09/01/2009 | US7581837 HDR displays and control systems therefor |
| 08/27/2009 | WO2009105247A1 Laser heated discharge plasma euv source with plasma assisted lithium reflux |
| 08/27/2009 | WO2009104938A2 Lighting lamp control device, system and method |
| 08/27/2009 | WO2009104508A1 Backlight device and display equipped with the device |
| 08/27/2009 | WO2009104137A1 Power control and mains isolation arrangement |
| 08/27/2009 | WO2009104113A1 High voltage transformer with space-saving primary windings |
| 08/27/2009 | US20090213341 Method of driving discharge lamp, driving device, and projector |
| 08/27/2009 | US20090212720 Light emitting diode driving system |
| 08/27/2009 | US20090212716 Light Source Driving Module and Circuit |
| 08/27/2009 | US20090212715 Oled Driver and Lighting Apparatus Equipped with the Same |
| 08/27/2009 | US20090212714 Driving method and driving device for discharge lamp, light source device, and image display device |
| 08/27/2009 | US20090212713 Pulse-modulation-signal generating device, light-source device, and optical scanning device |