| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 04/23/2002 | US6376993 Power supply to xenon ARC lamp interface |
| 04/23/2002 | US6376991 Circuit assembly for inclusion within fluorescent lamp |
| 04/23/2002 | US6376989 Dimmable discharge lamp for dielectrically impeded discharges |
| 04/18/2002 | WO2002032196A1 Circuit arrangement for operating several gas discharge lamps |
| 04/18/2002 | WO2002032195A2 Discharge lamps preheating |
| 04/18/2002 | WO2002032194A2 Circuit arrangement |
| 04/18/2002 | WO2002030828A2 Water treatment assembly |
| 04/18/2002 | WO2001069984A3 Method and apparatus of an improved electronics ballast circuit |
| 04/18/2002 | US20020044774 Uniform flash-emission controller |
| 04/18/2002 | US20020044466 Voltage converter circuit with self-oscillating half-bridge configuration and with protection against hard switching |
| 04/18/2002 | DE10050112A1 Circuit for increasing electronic processor power factor and reducing noise factor for electronic ballast of discharge lamp, has diode closing path from load circuit to supporting capacitor if current flows from capacitor to load circuit |
| 04/18/2002 | DE10047897A1 Electronic subassembly e.g. for SMD-components, has metal bridges/webs embedded in electrically-insulating material of assembly board |
| 04/18/2002 | DE10044255A1 Verfahren und Vorrichtung zur Stromsteuerung eines Leuchtmittels für die Hintergrundbeleuchtung eines transmissiven Displays insbesondere eines LC-Displays Method and apparatus for power control of an illuminating means for background illumination of a transmissive display, in particular a Liquid Crystal Display |
| 04/17/2002 | EP1198160A2 Liquid crystal display device and lighting device |
| 04/17/2002 | EP1198159A1 Electronic ballast |
| 04/17/2002 | EP1057247A4 Ac power converter |
| 04/17/2002 | CN1345175A Electronic circuit for detecting break of gas discharge lamp filament |
| 04/17/2002 | CN1345174A Drive device of discharge lamp having switch releasing when electrode helix proheating |
| 04/17/2002 | CN1345173A Ballast circuit for DC fluorescent light |
| 04/17/2002 | CN1083232C System to optimize artificial lighte intensity with increasing daylight intensity |
| 04/16/2002 | US6373200 Interface circuit and method |
| 04/16/2002 | US6373199 Reducing stress on ignitor circuitry for gaseous discharge lamps |
| 04/16/2002 | US6373198 Induction lamp system and induction lamp |
| 04/16/2002 | US6373197 Controller for flash lamps sharing a common power source and controlling method thereof |
| 04/16/2002 | US6373185 Gas discharge lamps with glow mode electrodes |
| 04/12/2002 | CA2323299A1 Water treatment assembly |
| 04/11/2002 | WO2002030162A2 A system and method for employing pulse width modulation for reducing vertical segregation in a gas discharge lamp |
| 04/11/2002 | WO2002030161A2 Voltage feed push-pull resonant inverter for lcd backlighting |
| 04/11/2002 | WO2002030160A1 A power supply for driving a discharge lamp |
| 04/11/2002 | US20020041759 Flash device, lens-fitted photo film unit, camera, and producing method for the same |
| 04/11/2002 | US20020041165 System and method for employing pulse width modulation with a bridge frequency sweep to implement color mixing lamp drive scheme |
| 04/11/2002 | DE10049842A1 Operating circuit for gas discharge lamps, has additional DC supply line for each gas discharge lamp for preventing unwanted lamp extinction |
| 04/11/2002 | DE10048976A1 Betriebsgerät für Gasentladungslampen mit Detektion des Wendelbruchs Operating device for gas discharge lamps with detection of spiral fracture |
| 04/10/2002 | EP1196012A2 Ignitor for discharge lamps |
| 04/10/2002 | EP1125477B1 Method and ballast for operating a lamp fitted with a fluorescent tube |
| 04/10/2002 | CN2485914Y Electronic A.C. ballast for intensive gas discharge lamp |
| 04/10/2002 | CN2485913Y Ballast device for multiple tubes |
| 04/10/2002 | CN1343995A 触发器线圈 Trigger coil |
| 04/09/2002 | US6369639 Inverter circuit |
| 04/09/2002 | US6369526 Method and device for operating electronic ballasts for high intensity discharge (HID) lamps |
| 04/09/2002 | US6369522 Metal halide lamp lumen depreciation improvement |
| 04/09/2002 | US6369519 Dielectric barrier discharge lamp light source |
| 04/09/2002 | US6369518 Lamps with electronic control of color temperature and color rendering index |
| 04/09/2002 | US6368149 Insulating cover for dual connector |
| 04/04/2002 | WO2002028152A1 Hid lamp operating circuit |
| 04/04/2002 | WO2002028151A1 Hid lamp operating circuit |
| 04/04/2002 | WO2002028150A1 Circuit for lighting hid lamp |
| 04/04/2002 | DE10129318A1 Entladungslampen-Leuchtbetriebschaltung A discharge lamp lighting circuit |
| 04/04/2002 | DE10128587A1 Steuerschaltung mit Konfigurierungseingang Control circuit configuration input |
| 04/03/2002 | EP1194016A2 Ballast for gas discharge lamps with phase detection |
| 04/03/2002 | EP1193735A1 High pressure discharge lamp and lighting apparatus using the lamp |
| 04/03/2002 | EP1192840A1 Switching ballast device |
| 04/03/2002 | EP1139700A9 Feeding device for discharge lamp |
| 04/03/2002 | EP0902857B1 Foam core spacer assembly |
| 04/03/2002 | EP0824761B1 Process for operating a discharge lamp |
| 04/03/2002 | CN1343439A Networkable power controller |
| 04/03/2002 | CN1082331C Electronic ballast circuit |
| 04/03/2002 | CN1082330C Circuit arrangement |
| 04/02/2002 | US6366208 Diagnostic functions for power supply |
| 04/02/2002 | US6366032 Fluorescent lamp ballast with integrated circuit |
| 04/02/2002 | US6366031 Electronic ballast for at least one low-pressure discharge lamp |
| 04/02/2002 | US6366030 Starter circuit configuration for a discharge lamp lighting circuit |
| 04/02/2002 | US6366029 Lamp ballast for reducing interference current |
| 04/02/2002 | US6366027 Circuit device for operating a discharge lamp by means of a high-frequency current |
| 04/02/2002 | US6366023 Starter modules for motor vehicle headlight discharge lamps |
| 04/02/2002 | US6366022 Electronic ballast for stabilizing current in a gas discharge lamp and method of manufacturing same |
| 04/02/2002 | CA2121090C Microprocessor-controlled strobe light |
| 03/28/2002 | WO2002025791A2 Apparatus and method for detecting a short circuit in a lighting system |
| 03/28/2002 | WO2002011498A8 Interface circuit and method for dimming a fluorescent lamp |
| 03/28/2002 | US20020036608 Liquid crystal display device having an improved lighting device |
| 03/28/2002 | DE10146811A1 Camera flash photography system has photometer device measuring pre-flash light for determining light quantity for main flash |
| 03/28/2002 | DE10146208A1 Flash system for SLR camera with several external flash units with mode selection for various modes of pre-flash light emission from external unit |
| 03/28/2002 | DE10146152A1 Camera flash photography system has flash command signal for main flash device forwarded to auxiliary flash device dependent on main flash operating mode |
| 03/28/2002 | DE10146135A1 Camera zoom flash calculates light quantity for pre-flash dependent on detected zoom position of flash light source |
| 03/28/2002 | DE10128588A1 Elektronisches Vorschaltgerät mit Zwischenkreisregelung Electronic ballast with DC control |
| 03/28/2002 | DE10128586A1 Elektronisches Vorschaltgerät mit digitaler Steuereinheit Electronic ballast with digital controller |
| 03/28/2002 | DE10120497A1 Electronic choke device with intermediate circuit regulator for use with gas discharge lamps has a rectifier circuit linked to an AC voltage source and a smoothing circuit linked to the rectifier circuit's output |
| 03/28/2002 | DE10046443A1 Elektronische Schaltung zur Detektion des Wandelbruchs bei Gasentladungslampen Electronic circuit for detecting the change breakthrough in gas discharge lamps |
| 03/28/2002 | DE10045711A1 Elektronisches Vorschaltgerät Electronic ballast |
| 03/28/2002 | DE10045709A1 Elektronisches Vorschaltgerät Electronic ballast |
| 03/27/2002 | EP1191826A1 Electronic ballast with a digital control unit |
| 03/27/2002 | EP1191825A2 Flash device for a camera |
| 03/27/2002 | EP1191824A2 Electronic ballast for fluorescent lamp |
| 03/27/2002 | EP1190603A2 Electronic ballast and method of manufacturing same |
| 03/27/2002 | EP0954950B1 Overheating protection device for a control device in gas discharge lamps |
| 03/27/2002 | EP0817542B1 Discharge lamp lighting device |
| 03/27/2002 | EP0804862B1 Process and circuit arrangement for operating cold cathode discharge lamps |
| 03/27/2002 | CN2483936Y Electronic ballast of low-power metal halide lamp |
| 03/27/2002 | CN1342390A Electronic ballast circuit |
| 03/27/2002 | CN1342389A High power factor electronic ballast with simplified circuit topology |
| 03/27/2002 | CN1342034A Igniter device for discharge lamp |
| 03/27/2002 | CN1341953A Lamp bulb type fluorescent lamp |
| 03/27/2002 | CA2357897A1 Operating device for gas discharge lamps with detection of filament breakage |
| 03/26/2002 | US6362577 Discharge lamp lighting circuit |
| 03/26/2002 | US6362576 Circuit arrangement for igniting a lamp |
| 03/26/2002 | US6362575 Voltage regulated electronic ballast for multiple discharge lamps |
| 03/26/2002 | US6362573 Apparatus and method for monitoring the life of arc lamp bulbs |
| 03/26/2002 | US6361189 Operating theater luminaire including discharge lamps within a reflector |
| 03/26/2002 | CA2112322C Power balanced coupling structure for electrodeless discharge lamp |
| 03/21/2002 | WO2002023959A1 Power module for high intensity discharge lamp |