| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 03/03/2011 | US20110051216 Apparatus and methods relating to wavelength conditioning of illumination |
| 03/03/2011 | US20110050130 Buck converter and method for providing a current for at least one led |
| 03/03/2011 | US20110050129 Buck converter for making power available to at least one led |
| 03/03/2011 | US20110050128 Module for controlling light emitting diode current for selective feedback, apparatus and method for driving light emitting diodes using the same |
| 03/03/2011 | US20110050122 Color adjustable lamp |
| 03/03/2011 | US20110050116 Electronic ballast device and operation method thereof |
| 03/03/2011 | US20110050115 Method and igniter for igniting a gas discharge lamp |
| 03/03/2011 | US20110050114 Fluorescent lamp with balanced lamp tube electric potentials |
| 03/03/2011 | US20110050113 Illumination System Comprising A Light Source And A Control Unit And An Illumination Control System For Controlling A Light Source By Multiple User Interface Surfaces |
| 03/02/2011 | EP2291060A2 Lighting device fed from a single-phase or poly-phase AC power supply whereby flicker is reduced |
| 03/02/2011 | EP2290801A2 Overload and central point voltage detection |
| 03/02/2011 | EP2289290A1 Method for operating a mercury low-pressure lamp, a quick-start mercury low-pressure lamp and use thereof |
| 03/02/2011 | EP2289289A1 Circuit arrangement and method for operating a light source |
| 03/02/2011 | EP2289288A1 Electrodeless lamps with externally-grounded probes and improved bulb assemblies |
| 03/02/2011 | EP2047718B1 High-pressure discharge lamp |
| 03/02/2011 | EP1836883B1 A method and an operation controller for operation of a mercury vapour discharge lamp in an image rendering system |
| 03/02/2011 | CN201754645U AC electronic ballast |
| 03/02/2011 | CN201754644U Active power factor correction unit circuit |
| 03/02/2011 | CN201754639U Dimmer with stable performance |
| 03/02/2011 | CN101983541A Improved protection circuit for electronic converters and corresponding method |
| 03/01/2011 | USRE42182 Back-light control circuit of multi-lamps liquid crystal display |
| 03/01/2011 | US7898238 Generating an output DC voltage with a boost converter having a controlled pulse-duty factor |
| 03/01/2011 | US7898187 Circuit and method for average-current regulation of light emitting diodes |
| 03/01/2011 | US7898186 Circuit arrangement and method for the operation of a high-pressure gas discharge lamp |
| 02/24/2011 | WO2011022718A2 Resonant inverter with sleep circuit |
| 02/24/2011 | WO2011022685A2 Lamp assembly |
| 02/24/2011 | WO2011022517A2 Ballast for fluorescent emergency lighting |
| 02/24/2011 | WO2011022516A2 Sinusoidal alternating current ballast for fluorescent emergency lighting |
| 02/24/2011 | WO2011022116A2 Method of starting an hid lamp and ballast incorporating same |
| 02/24/2011 | WO2011021120A2 Method and apparatus providing universal voltage input for solid state light fixtures |
| 02/24/2011 | WO2011021096A1 Apparatus and methods of operation of passive and active led lighting equipment |
| 02/24/2011 | WO2011020199A1 Electronic ballast with high power factor |
| 02/24/2011 | US20110043771 High pressure discharge lamp lighting apparatus and projector |
| 02/24/2011 | US20110043765 Light source device, projection apparatus, and projection method |
| 02/24/2011 | US20110043241 Light emitting bio-mimicry device |
| 02/24/2011 | US20110043140 Charge pump circuit with current detecting and method thereof |
| 02/24/2011 | US20110043138 Light Emitting Device Capable of Dynamically Regulating Output Voltage and Related Control Method |
| 02/24/2011 | US20110043136 Light emitting diode system |
| 02/24/2011 | US20110043126 Stepped intensity electric road flare |
| 02/24/2011 | US20110043124 Methods and apparatus for encoding information on an a.c. line voltage |
| 02/24/2011 | US20110043123 Electrodeless plasma lamp and fill |
| 02/24/2011 | US20110043122 Resonant Inverter With Sleep Circuit |
| 02/24/2011 | US20110043120 Lamp assembly |
| 02/24/2011 | US20110043119 Method of Starting an HID Lamp and Ballast Incorporating Same |
| 02/24/2011 | US20110043112 Power control |
| 02/24/2011 | DE102010030134A1 Ermittlung der Totzeit bei der Ansteuerung einer Halbbrücke Measuring delay time in driving a half-bridge |
| 02/24/2011 | CA2808715A1 Apparatus and methods of operation of passive and active led lighting equipment |
| 02/24/2011 | CA2771243A1 Method and apparatus providing universal voltage input for solid state light fixtures |
| 02/24/2011 | CA2768518A1 Resonant inverter with sleep circuit |
| 02/23/2011 | EP2288238A2 Control of lighting devices over a modulated DC bus |
| 02/23/2011 | EP2286639A1 Multi-lamps instant start electronic ballast |
| 02/23/2011 | EP2153702B1 Driver apparatus for a gas discharge lamp |
| 02/23/2011 | EP1836884B1 A method of and a monitoring arrangement for monitoring the mercury condensation in an arc tube |
| 02/23/2011 | CN201752157U Independent protection circuit for multiple-light inverter power supply |
| 02/23/2011 | CN101982022A Waveform detection and combined step and linear dim control |
| 02/23/2011 | CN101982021A Detection of the type of an HID lamp by a multi-lamp operating device and lighting system |
| 02/23/2011 | CN101982020A Circuit arrangement for operating HID discharge lamps |
| 02/23/2011 | CN101982019A High-voltage discharge lamp lighting device, and illuminating device using the same |
| 02/23/2011 | CN101982018A Circuit configuration for starting HID gas discharge lamps |
| 02/23/2011 | CN101982017A Detection of the assignment of a terminal of an operating device for illumination means |
| 02/23/2011 | CN101980748A Hair-growth adjusting light emitting device |
| 02/23/2011 | CN101980587A Electronic ballast for cold cathode fluorescent lamp and output current adjusting method thereof |
| 02/22/2011 | US7893629 Backlight apparatus capable of short prevention and voltage feedback compensation |
| 02/17/2011 | WO2011020016A1 Spectral shift control for dimmable ac led lighting |
| 02/17/2011 | WO2011018324A1 Method for controlling a voltage transformer for overvoltage protection, voltage transformer and operating device having a voltage transformer |
| 02/17/2011 | US20110037414 Driving apparatus for light emitting diodes |
| 02/17/2011 | US20110037408 Method for Operating a Gas Discharge Lamp and Lighting System Comprising a Gas Discharge Lamp |
| 02/17/2011 | US20110037407 Led light emitting device |
| 02/17/2011 | US20110037406 High pressure discharge lamp lighting apparatus and lighting fixture |
| 02/17/2011 | US20110037405 Transformer, power converter, lighting device, lighting device for vehicle, and vehicle using the same |
| 02/17/2011 | US20110037404 Discharge lamp using spread spectrum |
| 02/17/2011 | US20110037403 Modulated light source systems and methods. |
| 02/17/2011 | US20110037402 High-pressure discharge lamp lighting device |
| 02/17/2011 | US20110037401 Power conversion driving circuit and fluorescent lamp driving circuit |
| 02/17/2011 | US20110037400 Constant Current Driving Circuit for Field Emission Device |
| 02/17/2011 | US20110037398 Circuit Arrangement and Method for Starting a Discharge Lamp |
| 02/17/2011 | US20110037395 Vehicle having a solar-powered light emitting device |
| 02/17/2011 | US20110037393 Method and circuit arrangement for operating at least one discharge lamp |
| 02/17/2011 | US20110037389 Electrodeless lamps with externally-grounded probes and improved bulb assemblies |
| 02/17/2011 | DE102009038106A1 Reflector and/or electromagnetic interference collecting electrode for fluorescent lamp, has high frequency connection for power supply voltage, where reflector or electrode is spatially arranged between fluorescent lamp and illuminant |
| 02/17/2011 | DE102009036645A1 Verfahren zum Inbetriebsetzen einer Entladungslampe sowie Schaltungsanordnung zum Betreiben einer solchen Method for putting a discharge lamp and circuit arrangement for operating such |
| 02/16/2011 | EP2285192A1 Preheat cycle control circuit for a fluorescent lamp |
| 02/16/2011 | EP2285191A1 Overload protection |
| 02/16/2011 | EP2285190A1 Driving method for discharge lamp, driving device for discharge lamp, light source device, and image display apparatus |
| 02/16/2011 | EP2285189A1 Module for parallel lighting and balancer coil for discharge lamp |
| 02/16/2011 | EP2283704A1 Voltage fed programmed start ballast |
| 02/16/2011 | EP2283703A2 Method of driving an uhp gas-discharge lamp |
| 02/16/2011 | EP2127499B1 Circuit configuration for controlling at least one fluorescent lamp |
| 02/16/2011 | CN201750618U Economizer for environmental-friendly intelligent high-voltage sodium lamp |
| 02/16/2011 | CN201750617U Wall time delay switch box of energy saving lamp |
| 02/16/2011 | CN201750616U Electronic ballast and fluorescent lamp |
| 02/16/2011 | CN201750615U High-pressure gas discharge lamp |
| 02/16/2011 | CN201750614U High power factor electronic ballast for high intensity gas-discharging lamp |
| 02/16/2011 | CN201750613U Hot restart type trigger of metal halide lamp |
| 02/16/2011 | CN201750612U Electronic ballast for electrodeless fluorescent lamp |
| 02/16/2011 | CN201750611U Self ballasted planar florescent lamp |
| 02/16/2011 | CN201750610U High-reliability electrodeless fluorescent lamp electronic ballast |
| 02/16/2011 | CN201750609U HID lamp lighting circuit |
| 02/16/2011 | CN201750608U HID (high intensity discharge) lighting monitor |
| 02/16/2011 | CN101978790A End-of-life protection circuit for high-intensity discharge lamp |