| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 09/30/2004 | US20040189216 Shorted lamp detection in backlight system |
| 09/30/2004 | US20040189215 High q impedance matching inverter circuit with automatic line regulation |
| 09/30/2004 | US20040189212 High-intensity discharge lamp and related lighting device |
| 09/30/2004 | US20040189211 Voltage booster of headlight |
| 09/30/2004 | DE10310591A1 Electronic lamp ballast device and circuit arrangement for gas discharge lamp formed by two identical devices connected in parallel |
| 09/30/2004 | DE102004011906A1 System zum Steuern der Blitzlichtabgabe eines Blitzgerätes System to control the flash light output of a flash unit |
| 09/30/2004 | DE102004010167A1 Fernsehgerät und Kaltkathodenröhren-Dimmer TV and Cold Cathode Fluorescent Lamp Dimmer |
| 09/29/2004 | EP1463386A1 High Q impedance matching inverter circuit and method thereof |
| 09/29/2004 | EP1463385A2 Fluorescent lamp and associated circuit |
| 09/29/2004 | EP1461983A1 Reducing vertical segregation in a hid lamp operated at vhf frequencies |
| 09/29/2004 | CN2645403Y Novel electronic ballast |
| 09/29/2004 | CN2645402Y High-performance electronic ballast |
| 09/29/2004 | CN2645336Y Electronic power transformer for Christmas lamps or neon lamps |
| 09/29/2004 | CN2645232Y Electromagnetic induction lamp with three-dimensional contouring tube |
| 09/29/2004 | CN1533684A Device for operating high-pressure discharge lamp |
| 09/29/2004 | CN1533683A Lamp operating circuit for gas discharge lamp |
| 09/29/2004 | CN1533225A Discharging lamp ignitor |
| 09/29/2004 | CN1533224A Voltage converter for water treatment system UV bulb |
| 09/29/2004 | CN1169407C Medium barrier discharge lamp light source apparatus |
| 09/29/2004 | CN1169406C 电子镇流器 Electronic Ballast |
| 09/29/2004 | CN1169405C Piezoelectric transformer inverter |
| 09/28/2004 | US6798986 Slave flash controlling device and slave flash device |
| 09/28/2004 | US6798673 Circuit synchronization apparatus and method |
| 09/28/2004 | US6798341 Network based multiple sensor and control device with temperature sensing and control |
| 09/28/2004 | US6798153 Method of regulating power in a high-intensity-discharge lamp |
| 09/28/2004 | US6798151 Current and charge leakage balancing device for display panel |
| 09/28/2004 | US6798142 Flash emitting device and radiant heating apparatus |
| 09/28/2004 | CA2280561C Electronic high intensity discharge ballast |
| 09/28/2004 | CA2205344C High-frequency operating circuit for a low-pressure discharge lamp with improved electromagnetic compatability |
| 09/27/2004 | CA2462388A1 Four-electrode fluorescent lamp and the circuit for arranging the same |
| 09/23/2004 | WO2004082339A1 Apparatus and method of driving light source for display device |
| 09/23/2004 | WO2004082113A1 A dc-dc converter with reduced surge voltage and an electronic ballast including the converter for a discharge lamp |
| 09/23/2004 | WO2004019312A3 Apparatus for supplying power, backlight assembly and liquid crystal display apparatus having the same |
| 09/23/2004 | US20040183481 Microwave powered lamphead having external shutter |
| 09/23/2004 | US20040183479 Rare gas fluorescent lamp device |
| 09/23/2004 | US20040183477 Electronic ballast |
| 09/23/2004 | US20040183476 High-pressure metal-vapor discharge lamp lighting apparatus and headlight device for automobile |
| 09/23/2004 | US20040183474 Circuit having power management |
| 09/23/2004 | US20040183473 Electronic ballast for a high intensity discharge lamp |
| 09/23/2004 | US20040183472 Electronic ballast for a high intensity discharge lamp |
| 09/23/2004 | US20040183469 Sequential burnst mode activation circuit |
| 09/23/2004 | US20040183468 Variable frequency half bridge driver |
| 09/23/2004 | US20040183466 Circuit having global feedback for promoting linear operation |
| 09/23/2004 | US20040183465 Controlling a light assembly |
| 09/23/2004 | US20040183464 Portable fluorescent drop-light |
| 09/23/2004 | US20040183463 Method and circuit for driving a gas discharge lamp |
| 09/23/2004 | US20040183461 Methods and systems for providing emission of incoherent radiation and uses therefor |
| 09/23/2004 | US20040183460 Device for operating a high-pressure discharge lamp |
| 09/23/2004 | US20040183459 Overvoltage protection for hid lamp ballast |
| 09/23/2004 | US20040183455 Dielectric barrier discharge lamp and method and circuit for igniting and operating said lamp |
| 09/23/2004 | US20040183450 Method and apparatus for determining the resonant frequency of a resonant circuit |
| 09/23/2004 | US20040183448 Transformer and voltage supply circuit thereof for lighting tubes |
| 09/23/2004 | US20040183444 Compact fluorescent lamp, self-ballasted fluorescent lamp and luminaire |
| 09/23/2004 | US20040182761 Point-of-use water treatment system |
| 09/23/2004 | DE4322139B4 Schaltungsanordnung zum Betrieb einer Hochdruckentladungslampe für einen Fahrzeugscheinwerfer Circuit arrangement for operating a high pressure discharge lamp for a vehicle headlight |
| 09/22/2004 | EP1459608A1 Method and device for driving a gas discharge lamp |
| 09/22/2004 | EP1459607A1 The use of arc straightening in hid lamps operated at vhf frequencies |
| 09/22/2004 | EP1459606A1 Color mixing in hid lamp at vhf frequencies |
| 09/22/2004 | EP1459605A1 Electronic ballast with rail voltage switching |
| 09/22/2004 | EP1459282A1 Electronic ballast with low voltage output |
| 09/22/2004 | EP0918352B1 Fluorescent lamp, compact self-ballasted fluorescent lamp, and lighting equipment |
| 09/22/2004 | CN2643602Y Automatic power controller for high voltage sodium lamp |
| 09/22/2004 | CN2643601Y Starter-free power switch |
| 09/22/2004 | CN2643476Y DC fluorescent lamp |
| 09/22/2004 | CN1531385A Self-control cathode protective circuit device of fluorescent tube |
| 09/22/2004 | CN1531384A Switch device of high-voltage metal steaming discharge light and front light device of vehicle |
| 09/22/2004 | CN1531010A Electrodeless light system |
| 09/22/2004 | CN1531002A Luminous device of superhigh voltage mercury light |
| 09/22/2004 | CN1168357C Method and device for regulating brightness of cathode fluorescent tube |
| 09/21/2004 | US6794832 Lighting method and apparatus for high-pressure discharge lamp, and high-pressure discharge lamp apparatus |
| 09/21/2004 | US6794830 System for individual and remote control of spaced lighting fixtures |
| 09/21/2004 | US6794829 Method and apparatus for a protective ballast circuit |
| 09/21/2004 | US6794828 Driving serially connected high intensity discharge lamps |
| 09/21/2004 | US6794827 Multiple ballasts operable from a single DC bus |
| 09/21/2004 | US6794826 Apparatus and method for lamp ignition control |
| 09/21/2004 | US6794818 Fluorescent lamp |
| 09/21/2004 | US6794796 Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer |
| 09/21/2004 | US6793817 Lamp assembly for point-of-use water treatment system |
| 09/21/2004 | CA2186921C Discharge lamp having light-transmissive conductive coating for rf containment and heating |
| 09/16/2004 | WO2004080129A1 Method and apparatus for adjusting the luminous intensity of discharge lamps |
| 09/16/2004 | WO2004079906A2 Variable frequency half bridge driver |
| 09/16/2004 | WO2004079471A2 Digital lighting ballast oscillator |
| 09/16/2004 | WO2004068532A3 Fluorescent lamp with a second ballast for dimmed lighting mode |
| 09/16/2004 | WO2004023844A3 Electronic ballast for a gas discharge lamp |
| 09/16/2004 | WO2003092329A3 Inductively powered lamp assembly |
| 09/16/2004 | US20040179832 Light emission control system for a flash device |
| 09/16/2004 | US20040179003 Device and method of driving light source in display devices |
| 09/16/2004 | US20040178873 Wound-rotor transformer and power source device using said wound-rotor transformer |
| 09/16/2004 | US20040178748 High-pressure discharge lamp operation apparatus and high-pressure discharge lamp operation method |
| 09/16/2004 | US20040178746 Low frequency output electronic ballast |
| 09/16/2004 | US20040178744 Compact fluorescent lamp, self-ballasted fluorescent lamp and luminaire |
| 09/16/2004 | US20040178735 Electrodeless lamp system |
| 09/16/2004 | US20040178733 Emission device for an ultra-high pressure mercury lamp |
| 09/16/2004 | DE4447779B4 Electrical circuit for vehicle HV gas discharge lamp |
| 09/16/2004 | DE4442658B4 Schaltungsanordnung zum Starten und Betreiben einer Hochdruck-Entladungslampe für Fahrzeuge Circuit arrangement for starting and operating a high-pressure discharge lamp for vehicles |
| 09/16/2004 | DE10310144A1 Entladungslampe für dielektrisch behinderte Entladungen mit zurückspringend überhändenden Entladungselektrodenabschnitten Discharge lamp for dielectric barrier discharges with hands back jumping over the discharge started electrode portions |
| 09/16/2004 | DE10310143A1 Verfahren und Vorrichtung zur Bestimmung der Resonanzfrequenz eines Resonanzkreises Method and apparatus for determining the resonant frequency of a resonant circuit |
| 09/16/2004 | DE102004004677A1 Durch Mikrowellen angeregte Ultraviolett-Lampe mit einer einzigen elektrischen Zwischenverbindung Microwave-excited ultraviolet lamp with a single electrical interconnect |
| 09/15/2004 | EP1458224A2 Controlling a light source |
| 09/15/2004 | EP1458223A1 Electronic ballast for high-pressure discharge lamp |