| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 08/01/2002 | US20020101190 Electrodeless aperture lamp with IR shedding |
| 08/01/2002 | US20020101187 Circuit arrangement |
| 08/01/2002 | US20020101186 Arrangement in connection with discharge lamp |
| 08/01/2002 | US20020101185 Discharge lamps |
| 08/01/2002 | US20020101183 Switching device |
| 08/01/2002 | US20020101165 High-intensity discharge lamp |
| 08/01/2002 | US20020101164 Dual-element 3-way compact fluorescent lamp |
| 08/01/2002 | US20020101163 Method and system for driving high pressure mercury discharge lamp, and image projector |
| 07/31/2002 | EP1227707A2 Microcontroller, switch-mode power supply and electronic ballast for operating at least one lamp |
| 07/31/2002 | EP1227706A2 Novel circuit designs and control techniques for high frequency electronic ballasts for high intensity discharge lamps |
| 07/31/2002 | EP1227705A2 Ballast with SEPIC converter for lamps |
| 07/31/2002 | EP1114571B1 Circuit for operating gas discharge lamps |
| 07/31/2002 | EP1078557B1 Dimming ballast and drive method for lamps using a frequency controlled, loosely-coupled transformer |
| 07/31/2002 | CN2503686Y A.C. electronic ballast for high-intensity gas discharge lamp |
| 07/31/2002 | CN2503669Y CCD optical measurement power supply |
| 07/31/2002 | CN1362002A An electronic ballast circuit |
| 07/31/2002 | CN1361654A Protection and reset circuit against burst |
| 07/31/2002 | CN1361653A Energy-saving device for discharging lamp |
| 07/31/2002 | CN1361511A Automatic light intensity control equipment and method in liquid crystal display equipment |
| 07/30/2002 | US6427061 Flash device and image forming device that uses flash device |
| 07/30/2002 | US6426598 Control gear for fluorescent lamp |
| 07/30/2002 | US6426597 Circuit arrangement for operating gas discharge lamps |
| 07/25/2002 | WO2002058440A1 Ballast and method of feeding a fluorescent lamp |
| 07/25/2002 | WO2002058439A1 Ballast and method of feeding a fluorescent lamp |
| 07/25/2002 | US20020097011 Lamp ballast with sepic converter |
| 07/25/2002 | US20020097010 Ballast and method of feeding a fluorescent lamp |
| 07/25/2002 | US20020097009 Ballast and method of feeding a fluorescent lamp |
| 07/25/2002 | US20020097008 Microcontroller, switched-mode power supply, ballast for operating at least one electric lamp, and method of operating at least one electric lamp |
| 07/25/2002 | US20020097007 Energy conservation dimmer device for gaseous discharge devices |
| 07/25/2002 | US20020097005 Circuit arrangement |
| 07/25/2002 | US20020097004 Power supply system for multiple loads and driving system for multiple lamps |
| 07/25/2002 | DE10110239A1 Electronic operating device for lamps with SEPIC converters, has first stage designed as SEPIC converter with time discrete regulation with control intervals longer than half mains period |
| 07/25/2002 | DE10102837A1 Betriebsgerät für Gasentladungslampen mit Abschaltung der Wendelheizung Operating device for gas discharge lamps with switch-off of filament heating |
| 07/25/2002 | DE10101275A1 Voltage adapter for cold cathode fluorescent lamps, has temperature-sensitive component that drives transistors to current regulate the cold cathode lamp |
| 07/24/2002 | EP1225792A1 Device for electrode heating in discharge lamps |
| 07/24/2002 | EP1225791A2 Method and apparatus for supplying high frequency alternating current to a low pressure discharge lamp |
| 07/24/2002 | EP0860097B1 Circuit arrangement |
| 07/24/2002 | EP0860096B1 Circuit arrangement |
| 07/24/2002 | EP0830808B1 Circuit arrangement |
| 07/24/2002 | CN2502485Y High power factor electronic ballast for controlling high voltage gas discharge lamp |
| 07/24/2002 | CN2502484Y Glow stater base |
| 07/24/2002 | CN1360813A Inductive electrodeless lamp providing rotating electric field |
| 07/24/2002 | CN1360337A Resonator of microwave lighting device and method for making same |
| 07/24/2002 | CN1360336A High-pressure discharge lamp |
| 07/24/2002 | CN1360334A High pressure gas discharge lamp and mfg. method thereof |
| 07/24/2002 | CN1360333A Short arc high-pressure discharge lamp for digital projection technique |
| 07/24/2002 | CN1088291C Servo-amplifier for controlling high-ohmic low-voltage source |
| 07/24/2002 | CN1088201C Lens-fitted photo film unit and electronic flash device for use therewith |
| 07/24/2002 | CA2369217A1 Lamp ballast with sepic converter |
| 07/23/2002 | US6424247 Inverter transformer |
| 07/23/2002 | US6424101 Electronic ballast with feed-forward control |
| 07/23/2002 | US6424100 Fluorescent lamp operating apparatus and compact self-ballasted fluorescent lamp |
| 07/23/2002 | US6424099 High output lamp with high brightness |
| 07/23/2002 | US6424098 Illumination system with several gas discharge tubes |
| 07/23/2002 | US6424097 Projection lamp safety interlock apparatus and method |
| 07/23/2002 | CA2368897A1 Microcontroller, switched-mode power supply, ballast for operating at least one electric lamp, and method of operating at least one electric lamp |
| 07/22/2002 | CA2368725A1 Ballast for gas discharge lamps with shutdown of the filament heating |
| 07/18/2002 | WO2002056646A2 Ballast for a discharge lamp |
| 07/18/2002 | WO2002056645A2 Ballast for a discharge lamp |
| 07/18/2002 | WO2002056644A1 Device and method for the multi-phase operation of a gas discharge or metal vapour lamp |
| 07/18/2002 | WO2002056643A1 Sequential burst mode activation circuit |
| 07/18/2002 | WO2002056335A1 Circuit assembly for inclusion within fluorescent lamp |
| 07/18/2002 | WO2002041670A3 A voltage-fed push-pull llc resonant lcd backlighting inverter circuit |
| 07/18/2002 | WO2002013581A3 Multiple lamp lcd backlight driver with coupled magnetic components |
| 07/18/2002 | WO2001074553A3 Software for operating a lens forming apparatus |
| 07/18/2002 | US20020093838 Circuit arrangement |
| 07/18/2002 | US20020093295 Light source device of a dielectric barrier discharge lamp |
| 07/18/2002 | DE10102408A1 Verfahren für Drehstromanschluß für EVG Method for three-phase connection for electronic ballast |
| 07/17/2002 | EP1223792A1 Ballasting circuit for operating electrical lamps |
| 07/17/2002 | EP1223570A2 Apparatus and method for automatic brightness control of the backlight for use in a liquid crystal display device |
| 07/17/2002 | EP1095541B1 Circuit arrangement for energy-saving operation of a fluorescent tube |
| 07/17/2002 | EP1040733B1 Electronic lamp ballast |
| 07/17/2002 | CN2501233Y Lighting tube-type emergency lamp for fire control |
| 07/17/2002 | CN2501232Y Lighting tube type emergent lamp for fire control |
| 07/16/2002 | US6420839 Power supply system for multiple loads and driving system for multiple lamps |
| 07/16/2002 | US6420838 Fluorescent lamp ballast with integrated circuit |
| 07/16/2002 | US6420833 Switching device with improved over-current protection |
| 07/16/2002 | CA2206196C Foam core spacer assembly |
| 07/16/2002 | CA2068160C Shielded starting coil for an electrodeless high intensity discharge lamp |
| 07/12/2002 | CA2367226A1 Circuit arrangement for switching on a partial circuit arrangement |
| 07/11/2002 | US20020090852 Fluorescent lamp holder |
| 07/11/2002 | US20020089294 Discharge lamp lighting circuit |
| 07/11/2002 | US20020089293 High intensity discharge lamp magnetic/electronic |
| 07/11/2002 | DE10063325A1 Gas discharge lamp starter has switch regulator fed with primary clock pulses to feed lamp-triggering device, detector for power output of regulator and regulator to emit power output signal |
| 07/10/2002 | EP0836794B1 Inverter |
| 07/10/2002 | EP0677201B1 Backlighting for liquid crystal display |
| 07/10/2002 | CN2500066Y Digital control light adjustor for fluorescent lamp |
| 07/10/2002 | CN2500065Y Phase-shift voltage regulation and stabilization type lamp tube heater |
| 07/10/2002 | CN2500064Y Startor of relay |
| 07/10/2002 | CN1358405A Improved power feedback power factor correction scheme for multiple lamp operation |
| 07/10/2002 | CN1358057A DC-AC converter |
| 07/10/2002 | CN1358056A Ballast circuit used for several high-strenght gas discharge lamps |
| 07/10/2002 | CN1087585C Electrical power control system |
| 07/09/2002 | US6417833 Liquid crystal display apparatus and method for lighting backlight thereof |
| 07/09/2002 | US6417631 Integrated bridge inverter circuit for discharge lighting |
| 07/09/2002 | US6417630 Circuit arrangement |
| 07/09/2002 | US6417629 Push-pull based voltage-clamping electronic ballast |
| 07/09/2002 | US6417624 Lighting system for vehicle |
| 07/04/2002 | WO2002052706A1 Method and apparatus for cancelling ripple current in a lamp |
| 07/04/2002 | WO2002033502A8 Ballast control ic with power factor correction |