| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 06/22/2004 | US6753658 Electronic ballast circuit for operating a high intensity discharge lamp |
| 06/22/2004 | US6753657 Discrete modulation ballast operation and method of use |
| 06/22/2004 | CA2119718C Method and circuit for enhancing stability during dimming of electrodeless hid lamp |
| 06/17/2004 | WO2004052058A1 Electronic ballast of high power factor for compact fluorescent lamp |
| 06/17/2004 | WO2004051835A1 Dc/ac converter and its controller ic |
| 06/17/2004 | WO2004051829A2 Power supply apparatus, backlight assembly and liquid crystal display apparatus having the same |
| 06/17/2004 | WO2004028206A3 Adaptive cfl control circuit |
| 06/17/2004 | US20040113883 Inverter driving apparatus and liquid crystal display including inverter driving apparatus |
| 06/17/2004 | US20040113631 Backlight unit for liquid crystal display |
| 06/17/2004 | US20040113570 Adaptive CFL control circuit |
| 06/17/2004 | US20040113569 Apparatus and method for striking a fluorescent lamp |
| 06/17/2004 | US20040113567 Electronic ballast for a high-pressure discharge lamp |
| 06/17/2004 | US20040113566 Sensing voltage for fluorescent lamp protection |
| 06/17/2004 | US20040113565 Inverter transformer and inverter circuit |
| 06/17/2004 | US20040113564 Dimmable self-oscillating electronic ballast for fluorescent lamp |
| 06/17/2004 | US20040113563 Lighting system and method incorporating pulsed mode drive for enhanced afterglow |
| 06/17/2004 | US20040113102 Method and device for operating a uv-radiation source |
| 06/17/2004 | DE202004006274U1 Ultraviolet electrical hand held torch has electrical fan for passing cooling air across bulb and electronics |
| 06/17/2004 | DE202004004462U1 Circuitry for operating battery powered gas discharge lamp for emergency illumination, with lamp terminal containing load circuit energized in dependence on control signal dependent on battery charge condition |
| 06/17/2004 | DE10354987A1 Hochgenauigkeitsbeleuchtungssteuerung für PWM-getriebene Lampe High precision lighting control for PWM-driven lamp |
| 06/17/2004 | DE10354868A1 Non-mercurial arc tube for a gas discharge lamp used in a motor vehicle's lighting system has an encased glass bulb with pinch seals and opposing electrodes |
| 06/16/2004 | EP1429586A1 Lighting system and method incorporating pulsed mode drive for enhanced afterglow |
| 06/16/2004 | EP1429585A1 Dielectric barrier discharge lamp operating device |
| 06/16/2004 | CN2620960Y 电子镇流器 Electronic Ballast |
| 06/16/2004 | CN1505776A Electronic dimmable ballast for high intensity discharge lamp |
| 06/16/2004 | CN1505452A Device for operating discharge lamps |
| 06/16/2004 | CN1505251A Driving method and driving circuit for piezoelectric transformer, cold-cathode tube light-emitting apparatus, liquid crystal panel |
| 06/16/2004 | CN1505092A Short arc high intensity mercury discharge lamp |
| 06/16/2004 | CN1154401C Lighting circuit of discharging lamp |
| 06/15/2004 | US6750842 Back-light control circuit of multi-lamps liquid crystal display |
| 06/15/2004 | US6750620 Discharge lamp igniter device and projector device |
| 06/15/2004 | US6750619 Electronic ballast with filament detection |
| 06/15/2004 | US6750613 High lamp-power lighting system and fluorescent lamp |
| 06/10/2004 | WO2004049768A1 Symmetric cancelling anti-striation circuit |
| 06/10/2004 | WO2003059018A3 Modulated high-frequency electronic ballast |
| 06/10/2004 | US20040109317 Compact fluorescent lamp package |
| 06/10/2004 | US20040108815 Microwave-excited elecrodeles discharge bulb and microwave-excited discharge lamp system |
| 06/09/2004 | EP1427264A2 Electronic lamp ballast |
| 06/09/2004 | EP1427263A1 Electronic ballast for discharge lamps |
| 06/09/2004 | EP1426994A2 Lamp with screw socket and its manufacturing method |
| 06/09/2004 | EP1426778A2 Apparatus and method for testing a display |
| 06/09/2004 | EP1425943A1 Method and device for operating a fluorescent tube in an energy saving manner |
| 06/09/2004 | EP1425942A1 Ballast socket for compact fluorescent lamp |
| 06/09/2004 | EP1370917A4 Electronic dimmable ballast for high intensity discharge lamp |
| 06/09/2004 | DE10255737A1 Verfahren zum Betrieb mindestens einer Niederdruckentladungslampe und Betriebsgerät für mindestens eine Niederdruckentladungslampe Method for operating at least one low-pressure discharge lamp and ballast for at least one low-pressure discharge lamp |
| 06/09/2004 | CN2620457Y Light adjustable high pressure gas discharge lamp circuit |
| 06/09/2004 | CN1503613A Light adjusting system for high-pressure sodium lamp |
| 06/09/2004 | CN1503612A Operating method and system for the resonant operation of high-pressure lamps in longitudinal mode |
| 06/09/2004 | CN1503611A Discharge lamp switch on device |
| 06/09/2004 | CN1153508C Non-electrode low-voltage discharge lamp operating circuit |
| 06/09/2004 | CN1153507C Circuit arrangement |
| 06/08/2004 | US6747779 Carrier substrate with stack of functional layers including electrically conducting metal oxide layer and multicomponent electrode including electrochemically active layer, higher conductivity material, network of conducting wires or strips |
| 06/08/2004 | US6747423 Circuit configuration to operate a gas discharge lamp |
| 06/08/2004 | US6747422 High-voltage discharge lamp device |
| 06/08/2004 | US6747421 Self oscillation circuits |
| 06/08/2004 | US6747419 Method and apparatus for heat pipe cooling of an excimer lamp |
| 06/08/2004 | US6747418 Device and method for preheating the coil electrodes of a fluorescent lamp |
| 06/08/2004 | US6746274 Motion detector fluorescent light connector apparatus |
| 06/08/2004 | CA2201204C Converter housing |
| 06/03/2004 | WO2004047503A1 Circuit arrangement for operating discharge lamps |
| 06/03/2004 | WO2004047279A1 Dc/ac converter and its controller ic |
| 06/03/2004 | WO2004030418A3 Circuit for driving cold cathode tubes |
| 06/03/2004 | WO2004010742A3 Driver for a gas discharge lamp |
| 06/03/2004 | US20040105287 Inverter driving device and method |
| 06/03/2004 | US20040104884 Driving method and driving circuit for piezoelectric transformer, cold-cathode tube light-emitting apparatus, liquid crystal panel and device with built-in liquid crystal panel |
| 06/03/2004 | US20040104692 Electronic ballast of high power factor for compact fluorescent lamp |
| 06/03/2004 | US20040104691 Method for operating at least one low-pressure discharge lamp and operating device for at least one low-pressure discharge lamp |
| 06/03/2004 | DE10254983A1 Elektrische Schaltung zur Ansteuerung von mehreren Entladungsröhren Electrical circuit for controlling a plurality of discharge tubes |
| 06/03/2004 | DE10253904A1 Betriebsverfahren und System für den Resonanzbetrieb von Hochdrucklampen im longitudinalen Mode Operating method and system for resonant operation of high-pressure lamps in longitudinal mode |
| 06/03/2004 | DE10252979A1 Verfahren zum Betreiben einer Gasentladungslampe und Vorschaltgerät A method of operating a gas discharge lamp and ballast |
| 06/02/2004 | EP1424881A1 Method and device for driving a fluorescent lamp |
| 06/02/2004 | EP1424880A2 Device for operating discharge lamps |
| 06/02/2004 | EP1424879A1 Electric circuit for controlling a plurality of gas discharge tubes |
| 06/02/2004 | EP1423994A1 Circuit arrangement |
| 06/02/2004 | EP1423993A1 Method for color mixing of hid lamps operated at vhf frequencies using duty cycle modulation |
| 06/02/2004 | EP1423992A1 Circuit arrangement |
| 06/02/2004 | CN2619455Y Protective circuit of electronic stabilizer |
| 06/02/2004 | CN2619454Y AC/DC two purpose fluorescent lamp |
| 06/02/2004 | CN1502162A Self-oscillating circuit for driving high-side and low-side switching devices with variable width pulses |
| 06/02/2004 | CN1501756A Driving discharge luminous tube and light changes controller thereof |
| 06/02/2004 | CN1501755A Illuminative device for high pressure discharge lamp |
| 06/02/2004 | CN1501754A Piezoelectric inversion driving device |
| 06/02/2004 | CN1501141A Inverter apparatus and liquid crystal display including inverter apparatus |
| 06/02/2004 | CN1152609C Dimming ballast and driving method for frequency controlled lamps using loosely-coupled transformer |
| 06/01/2004 | US6744222 Discharge lamp lighting apparatus and lamp apparatus |
| 06/01/2004 | US6744221 Electrodeless lighting system and bulb therefor |
| 06/01/2004 | US6744220 Free-running circuit arrangement |
| 06/01/2004 | US6744219 Operating circuit for a discharge lamp with preheatable electrodes |
| 05/28/2004 | CA2450918A1 Method for operating at least one low-pressure discharge lamp and operating device for at least one low-pressure discharge lamp |
| 05/27/2004 | WO2004045257A1 Improved lamp colour control for dimmed high intensity discharge lamps |
| 05/27/2004 | WO2004045256A1 Circuit arrangement for orperating a high pressure discharge lamp |
| 05/27/2004 | WO2004045255A2 Circuit arrangement for operating a high pressure discharge lamp |
| 05/27/2004 | US20040100749 System, apparatus, and method for controlling lamp operation when subject to thermal cycling |
| 05/27/2004 | US20040100592 Cold-cathode driver and liquid crystal display |
| 05/27/2004 | US20040100439 Digital controlled multi-light driving apparatus |
| 05/27/2004 | US20040100438 Lamp driving device, backlight assembly and liquid crystal display apparatus having the same |
| 05/27/2004 | US20040100211 Device for operating discharge lamps by means of a transformer with four windings, and a corresponding method |
| 05/27/2004 | US20040100209 Electric discharge lamp and electric discharge lamp drive apparatus |
| 05/27/2004 | US20040100208 Power line monitor and interrupt arrangement for averting premature lamp mortality in low voltage conditions |
| 05/27/2004 | US20040100207 Device for switching on and powering discharge lamps |