| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 07/04/2002 | WO2002021885A3 System for overvoltage protection during pulse width modulation dimming of an lcd backlight inverter |
| 07/04/2002 | WO2001080271A3 Microwave excited ultraviolet lamp system with improved lamp cooling |
| 07/04/2002 | US20020086572 Neon sign transformer module and receptacle |
| 07/04/2002 | US20020085331 Protection circuit against high currents in lighting converters |
| 07/04/2002 | DE10100037A1 Circuit for operating electric lamps, comprises start circuit for inverter and system for deactivating start circuit |
| 07/04/2002 | DE10063938A1 Kurzbogen-Hochdruckentladungslampe für digitale Projektionstechniken Short-arc high-pressure discharge lamp for digital projection techniques |
| 07/03/2002 | EP1220581A2 Power supply device for cold-cathode discharge lamps |
| 07/03/2002 | EP1220580A2 Drive device and drive method for a cold cathode fluorescent lamp |
| 07/03/2002 | EP1220298A1 High-intensity discharge lamp |
| 07/03/2002 | EP1220295A2 High pressure discharge lamp, high pressure discharge lamp lighting apparatus and luminaire therefor |
| 07/03/2002 | EP1220192A2 Brightness control system and method for a backlight display device using backlight efficiency |
| 07/03/2002 | EP1013152B1 A drive circuit arrangement for a gas discharge lamp |
| 07/03/2002 | CN1356859A Light-adjustable electronic ballast |
| 07/03/2002 | CN1356858A Electronic ballast using single switching transistor to implement high power factor of fluorescent lamp |
| 07/03/2002 | CA2366894A1 Circuit arrangement for operating electric lamps |
| 07/02/2002 | US6414449 Universal electronic ballast |
| 07/02/2002 | US6414448 Electronic ballast for a gas discharge lamp |
| 07/02/2002 | US6414447 Discharge lamp lighting device and illuminating device |
| 07/02/2002 | US6414446 Switching device |
| 06/27/2002 | WO2002051214A1 Gas discharge lamp base comprising an ignition device |
| 06/27/2002 | WO2002010867A3 Circuit arrangement |
| 06/27/2002 | US20020080431 Image reader |
| 06/27/2002 | US20020079849 AC power converter |
| 06/27/2002 | US20020079848 Multiple-parameter control of lamp ignition |
| 06/27/2002 | US20020079845 High output lamp with high brightness |
| 06/27/2002 | US20020079844 Discrete modulation ballast operation and method of use |
| 06/27/2002 | DE10138936A1 Einschalteinrichtung für eine Gasentladungslampe For energizing a gas discharge lamp |
| 06/27/2002 | DE10063328A1 Device for starting and operating gas discharge lamp in motor vehicle switches off power switch after delay if signal output by current detector reaches signal defined by limiter |
| 06/27/2002 | DE10063324A1 Einrichtung zum Starten und Betreiben einer Gasentladungslampe in einem Kraftfahrzeug Means for starting and operating a gas discharge lamp in a motor vehicle |
| 06/26/2002 | EP1217876A2 Device for starting and operating a discharge lamp in a vehicle |
| 06/26/2002 | EP1217821A1 Image reader |
| 06/26/2002 | EP1217644A1 Short arc high pressure discharge lamp for use in digital projection techniques |
| 06/26/2002 | CN2497510Y Contacted light-modulating electronic ballast |
| 06/26/2002 | CN2497509Y IC electronic ballast circuit |
| 06/26/2002 | CN2497508Y Electronic ballast for high-intensity gas-discharge lamp |
| 06/25/2002 | US6411524 Dual planar printed wiring board for compact fluorescent lamp |
| 06/25/2002 | US6411044 Switching device |
| 06/25/2002 | US6411041 Non-thermionic fluorescent lamps and lighting systems |
| 06/25/2002 | US6411040 Apparatus and circuit for operating a discharge lamp of a motor vehicle at two power levels |
| 06/25/2002 | US6411039 Discharge lamp for dielectrically impeded discharges with improved electrode configuration |
| 06/25/2002 | CA2030848C Luminous tube protection circuit |
| 06/20/2002 | WO2002049399A1 Self-oscillating electronic discharge lamp ballast with dimming control |
| 06/20/2002 | WO2002049398A1 Ballast and method of feeding a fluorescent lamp |
| 06/20/2002 | WO2002049068A1 Aperture lamp with infrared shedding |
| 06/20/2002 | WO2002030162A3 A system and method for employing pulse width modulation for reducing vertical segregation in a gas discharge lamp |
| 06/20/2002 | WO2002001924A3 Cold cathode fluorescent lamp controller |
| 06/20/2002 | US20020075223 Back lighting source module for liquid crystal display |
| 06/20/2002 | US20020074955 High pressure discharge lamp driving apparatus, luminaire and high pressure discharge lamp driving method |
| 06/20/2002 | US20020074954 Ballast with abnormal lamp sensor and method therefor |
| 06/20/2002 | US20020074953 Inductive-resistive fluorescent apparatus and method |
| 06/20/2002 | US20020074952 Method and apparatus for disabling sodium ignitor upon failure of discharge lamp |
| 06/20/2002 | US20020074943 Short-arc high-pressure discharge lamp for digital projection technologies |
| 06/20/2002 | US20020074917 Resonator for microwave lighting apparatus and manufacturing method thereof |
| 06/20/2002 | DE10062974A1 Hochdruckgasentladungslampe und Verfahren zu ihrer Herstellung High-pressure gas discharge lamp and process for their preparation |
| 06/19/2002 | EP1215699A1 High pressure discharge lamp and method of manufacture |
| 06/19/2002 | EP1133900B1 Electronic system for generating and controlling light effects on projectors |
| 06/19/2002 | EP0855132B1 Circuit arrangement |
| 06/19/2002 | CN2496213Y Fluorescent lamp electronic ballast with current foldback circuit |
| 06/19/2002 | CN1354969A Kit for converting lighting units employing fluorescent lamps from inductive operation to electronic operation |
| 06/19/2002 | CN1354619A Discharge tube related device |
| 06/18/2002 | US6407935 High frequency electronic ballast with reactive power compensation |
| 06/18/2002 | US6407515 Power regulator employing a sinusoidal reference |
| 06/18/2002 | US6407514 Non-synchronous control of self-oscillating resonant converters |
| 06/18/2002 | US6407512 Flashing device of an automatic light-regulation type |
| 06/18/2002 | US6407511 Electronic ballast suitable for lighting control in fluorescent lamp |
| 06/18/2002 | US6407480 Circuit for driving piezoelectric transformer |
| 06/14/2002 | CA2327756A1 Fluorescent lamp electronic ballast control circuit |
| 06/13/2002 | WO2002047444A2 Ballast circuit |
| 06/13/2002 | WO2002047443A2 Improved control circuit for power factor corrected electronic ballasts and power supplies |
| 06/13/2002 | WO2002047442A1 Electronic ballast with feed-forward control |
| 06/13/2002 | WO2002047441A1 Ballast circuit arrangement |
| 06/13/2002 | WO2002025791A3 Apparatus and method for detecting a short circuit in a lighting system |
| 06/13/2002 | WO2002019778A3 Gas-discharge lamp type recognition based on built-in lamp electrical properties |
| 06/13/2002 | US20020071670 Electronic flash device |
| 06/13/2002 | US20020070687 Gas discharge lamp lighting device |
| 06/13/2002 | US20020070684 Optimal FM for HF operation of high intensity discharge (HID) lamps |
| 06/13/2002 | US20020070683 Lamp ignition with automatic compensation for parasitic capacitance |
| 06/13/2002 | US20020070680 Method and apparatus for generating a flash or series of flashes from a multiparameter light |
| 06/13/2002 | US20020070674 Apparatus and method for driving a cathode discharge tube |
| 06/13/2002 | US20020070177 Water treatment assembly |
| 06/12/2002 | CN2495073Y Illuminating apparatus on shoes |
| 06/12/2002 | CN2495071Y Flasher with two flashing modes |
| 06/12/2002 | CN1353568A Current converter for regulated back lighting |
| 06/11/2002 | US6404990 Flash unit |
| 06/11/2002 | US6404989 Flash device |
| 06/11/2002 | US6404142 Starting device for discharge lamp |
| 06/11/2002 | US6404140 High frequency electronic ballast for ceramic metal halide lamp |
| 06/11/2002 | US6404128 Glow discharge starter |
| 06/06/2002 | WO2002015646A3 Integral lamp |
| 06/06/2002 | WO2001097574A3 Control circuits for fluorescent tubes |
| 06/06/2002 | WO2001047323A3 Compander for power control in a ballast |
| 06/06/2002 | US20020067145 Ballast control IC with minimal internal and external components |
| 06/06/2002 | US20020067142 Electromagnetic ballast for sequentially starting a plurality of gaseous discharge lamps |
| 06/06/2002 | US20020067140 Push-pull based voltage-clamping electronic ballast |
| 06/06/2002 | US20020067139 Electronic ballast with feed-forward control |
| 06/06/2002 | US20020067137 Fluorescent lamp and power converter |
| 06/06/2002 | US20020067129 Ferrite core for electrodeless flourescent lamp operating at 50-500 khz |
| 06/06/2002 | DE10058551A1 Device for use with a source of high voltage and a discharge tube lamp in a high-voltage circuit has a temperature-dependent control for a tube current at a constant output voltage from the source. |
| 06/05/2002 | EP1211915A1 Arrangement in connection with discharge lamp |
| 06/05/2002 | EP1210727A1 High-pressure discharge lamp |