| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 08/05/2004 | US20040150346 Discharge tube |
| 08/05/2004 | US20040150344 Mercury-free arc tube for discharge lamp unit |
| 08/05/2004 | DE4332059B4 Vorschaltgerät zur Helligkeitssteuerung von Entladungslampen Ballast to control the brightness of discharge lamps |
| 08/05/2004 | DE4134537B4 Stromversorgungsschaltung für eine Entladungslampe in einem Kraftfahrzeug Power supply circuit for a discharge lamp in a motor vehicle |
| 08/04/2004 | EP1443808A2 Circuit and method for starting and operating gas discharge lamps with preheating filaments |
| 08/04/2004 | EP1443807A2 Circuit and method for starting and operating discharge lamps |
| 08/04/2004 | EP1443539A2 Discharge tube |
| 08/04/2004 | EP1443333A2 Full wave current sensor |
| 08/04/2004 | EP1442639A2 System for overvoltage protection during pulse width modulation dimming of an lcd backlight inverter |
| 08/04/2004 | EP1442638A1 Circuit arrangement |
| 08/04/2004 | EP1442637A1 Electronic ballast for high-intensity discharge lamps |
| 08/04/2004 | EP1442636A1 Safety starter for fluorescent lamps |
| 08/04/2004 | EP1442635A1 Evg units which may be wired in parallel due to lamp type |
| 08/04/2004 | EP1442634A1 Ballasting circuit |
| 08/04/2004 | EP1442633A1 Ballasting circuit |
| 08/04/2004 | EP1442632A1 Short-circuit ballast protection |
| 08/04/2004 | EP1442631A1 Circuit arrangement for operating a discharge lamp |
| 08/04/2004 | EP1059017B1 Electronic dimming ballast |
| 08/04/2004 | CN2631190Y Self-controlled cathode protection circuit device for fluorescent lamp tube |
| 08/04/2004 | CN1518202A Rectification circuit with enhancement separated output transformer circuit |
| 08/04/2004 | CN1518201A Power-supply device for power supplying to discharge lamp |
| 08/04/2004 | CN1518197A Power factor correction circuit within broad voltage range |
| 08/04/2004 | CN1518015A Wound rotor transformer and supply unit using wound rotor transformer |
| 08/04/2004 | CN1161009C High frequency electronic ballast for multiple-lamp independent operation |
| 08/04/2004 | CN1161008C Three-terminal bidirectional silicon-controlled switch light modulalation ballast |
| 08/04/2004 | CN1161007C 镇流器 Ballast |
| 08/04/2004 | CN1161006C Preconditioner |
| 08/04/2004 | CN1161005C Dielectric barrier discharge lamp light source |
| 08/04/2004 | CN1161004C Fluoescent tube current-limiting device with abnormal load protector |
| 08/04/2004 | CN1161003C Bipolar power device having integrated thermal protection for driving electric loads |
| 08/03/2004 | US6771029 Digital dimming fluorescent ballast |
| 07/29/2004 | WO2004064457A1 Circuit arrangment |
| 07/29/2004 | WO2004064456A1 Three-level dc-ac converter |
| 07/29/2004 | WO2004064455A1 Circuit and method for providing power to a load, especially a high-intensity discharge lamp |
| 07/29/2004 | WO2004023702A3 System and method for optical data communication |
| 07/29/2004 | US20040145279 High-efficiency piezoelectric transformer and ballast |
| 07/29/2004 | DE10392144T5 Entladelampen-Vorschaltgerät Discharge lamps ballast |
| 07/29/2004 | DE10303277A1 Starter circuit for electrical discharge lamp uses a limit setting switch to provide inputs of controller to set inverter frequency |
| 07/29/2004 | DE10303276A1 Starter circuit for electrical discharge lamp uses a limit setting switch to provide inputs of controller to set inverter frequency |
| 07/28/2004 | EP1441575A2 Power supply device for energizing a discharge lamp |
| 07/28/2004 | EP1441574A1 Discharging lamp apparatus |
| 07/28/2004 | EP1441252A1 Strobe apparatus and its manufacturing method |
| 07/28/2004 | EP1440605A1 Arc maintenance device for high density discharge lamps including an adaptive waveform monitor |
| 07/28/2004 | EP1034691A4 Non-thermionic ballast-free energy-efficient light-producing gas discharge system and method |
| 07/28/2004 | EP0823147B1 Bridge circuit arrangement |
| 07/28/2004 | CN2629384Y Electronic ballast protector |
| 07/28/2004 | CN2629382Y Apparatus for changing operating frequency of change pole device |
| 07/28/2004 | CN2629210Y Gas glass discharge tube |
| 07/28/2004 | CN1516993A High efficiency driver apparatus for driving cold cathode fluorescent lamp |
| 07/28/2004 | CN1516992A Discharge lamp lighting device |
| 07/28/2004 | CN1516991A Detection of asymmetrical load in AC-circuit |
| 07/28/2004 | CN1516864A Inverter for liquid crystal display, and power supply arrangement comprising such inverter |
| 07/28/2004 | CN1516212A Lamp bulb and mfg. method thereof |
| 07/28/2004 | CN1516103A Display device and method |
| 07/28/2004 | CN1515940A Lamp driver anjd back light assemlby and liquid crystal display device containing it |
| 07/28/2004 | CN1159955C Light-adjustable electronic ballast |
| 07/28/2004 | CN1159954C 放电灯 Discharge lamps |
| 07/28/2004 | CN1159953C Multiple lamp tube driving system |
| 07/28/2004 | CN1159952C Discharge lamp lighting device and illumination device |
| 07/28/2004 | CA2456371A1 Circuit arrangement and method for starting and operating discharge lamps |
| 07/28/2004 | CA2456367A1 Circuit arrangement and method for starting and operating gas discharge lamps with heatable electrode filaments |
| 07/27/2004 | US6768275 Discharge lamp lighting circuit |
| 07/27/2004 | US6768274 Ballast with lamp-to-earth-ground fault protection circuit |
| 07/27/2004 | US6768272 Apparatus for driving a fluorescent lamp |
| 07/27/2004 | US6768271 Ballast and method for operating a lamp |
| 07/27/2004 | CA2372482C Method and ballast for feeding a uv light low pressure radiator |
| 07/22/2004 | WO2004062325A1 Flash device, camera device and method and program thereof for the elimination of wasteful power consumption therein |
| 07/22/2004 | WO2004045255A3 Circuit arrangement for operating a high pressure discharge lamp |
| 07/22/2004 | WO2003071568A3 Starter assembly for a gas discharge lamp |
| 07/22/2004 | DE202004005172U1 Lampe zum Einbau in oder Anbau an ein Aufbewahrungsmöbel Lamp for installation in or mounting on a Storage Furniture |
| 07/22/2004 | DE10259069A1 Resonanzkonverter und Verfahren zum Treiben von veränderlichen Lasten Resonant converter and method for driving variable loads |
| 07/21/2004 | EP1438880A1 Electronic ballast with constant power |
| 07/21/2004 | EP1438879A1 Self-oscillating bridge circuit comprising a start circuit |
| 07/21/2004 | EP1438878A1 Method and apparatus for driving a gas discharge lamp |
| 07/21/2004 | CN2627787Y Multi-state flashing beacon |
| 07/21/2004 | CN1515132A Method and apparatus for determining power frequencies that cause arc instabilites in discharge lamps |
| 07/21/2004 | CN1515023A Microwave electrodeless discharge lamp bulb and microwave discharge lighting system |
| 07/21/2004 | CN1514681A High pressure gas discharge lamp electronic ballast system of power line carrier monitoring |
| 07/21/2004 | CN1514680A All wave detecting amplifier and its matched discharge lamp inverter |
| 07/21/2004 | CN1158907C Cold-cathode tube lighting circuit with protection circuit for piezoelectric transformer |
| 07/20/2004 | US6765355 Apparatus for lighting a discharge lamp at electric characteristics appropriate to a type of the discharge lamp |
| 07/20/2004 | US6765354 Circuitry arrangement for the operation of a plurality of gas discharge lamps |
| 07/20/2004 | US6765190 Multi-element electron-transfer optical detector system |
| 07/15/2004 | WO2004060032A1 Capacitively coupled fluorescent lamp package |
| 07/15/2004 | WO2004060031A1 Electronic ballast for fluorescent lamp |
| 07/15/2004 | WO2004060030A2 Electronic starter for (sound and burned) fluorescent lamp - saving energy |
| 07/15/2004 | WO2004059826A1 Dc-ac converter parallel operation system and controller ic thereof |
| 07/15/2004 | WO2004034740A3 Electronic ballast with filament detection |
| 07/15/2004 | US20040136134 Circuit for driving light source, projector, method for controlling lighting of light source, and computer readable program for executing the same |
| 07/15/2004 | US20040135524 LED lighting system |
| 07/15/2004 | US20040135523 Electrodeless discharge lamp lighting device, light bulb type electrodeless fluorescent lamp and discharge lamp lighting device |
| 07/15/2004 | DE19533103B4 Schaltungsanordnung zum Betrieb einer Entladungslampe Circuit arrangement for operating a discharge lamp |
| 07/15/2004 | DE10357293A1 Lampensteuervorrichtung und Verfahren zur Lampensteuerung Lamp control apparatus and method for controlling the lamps |
| 07/14/2004 | EP0990374B1 Starter circuit |
| 07/14/2004 | CN2626184Y Dimmer |
| 07/14/2004 | CN2626183Y Flashlight capacitor charging unit |
| 07/14/2004 | CN2626182Y Luminaire start circuit apparatus |
| 07/14/2004 | CN2626181Y 电子式安定器 Electronic Ballast |
| 07/14/2004 | CN1512831A Cold cathode fluorescent lamp driver |
| 07/14/2004 | CN1512473A Inverter, liquid crystal display device using said device and its lamp monitoring method |