| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 06/28/2012 | DE102010063867A1 Zündregelung und Zünderkennung von Gasentladungslampen Ignition control and ignition detection of gas discharge lamps |
| 06/28/2012 | CA2822025A1 Metal salt compositions |
| 06/27/2012 | EP2468078A1 Electronic ballast and method for operating at least one discharge lamp |
| 06/27/2012 | EP2468077A2 Method of starting an hid lamp and ballast incorporating same |
| 06/27/2012 | EP2468076A2 Method and apparatus providing universal voltage input for solid state light fixtures |
| 06/27/2012 | EP2468075A2 Resonant inverter with sleep circuit |
| 06/27/2012 | EP2151008B1 High-voltage pulse generator and high-pressure discharge lamp having such a generator |
| 06/27/2012 | EP2090142B1 Circuit arrangement, and method for the operation of a high-pressure discharge lamp |
| 06/27/2012 | EP2047721B1 Monitoring device |
| 06/27/2012 | EP2039230B1 Portable communication device equipped with an electronic flash having a led ignition device |
| 06/27/2012 | EP2000011B1 Operating appliance for a lighting device |
| 06/27/2012 | EP1969691B1 Load detector for a dimmer |
| 06/27/2012 | EP1899695B8 Method and system for luminance characterization |
| 06/27/2012 | CN202285453U 荧光灯的亮度切换装置 Fluorescent lamp brightness switching means |
| 06/27/2012 | CN202285452U 一种车用氙气灯安定器 A vehicle with a xenon lamp ballast |
| 06/27/2012 | CN1886020B Driving apparatus for CCFL |
| 06/27/2012 | CN1822741B Circuit and method for operating lamps |
| 06/27/2012 | CN102523670A Bridge-circuit-controlled positive and negative input device for high intensity discharge (HID) stabilizer |
| 06/27/2012 | CN102523669A Abnormality protection circuit for electronic ballast of cold cathode lamp |
| 06/27/2012 | CN102523668A Starting device of fluorescent lamp |
| 06/27/2012 | CN102523667A Electronic preswitching device and method for operating at least one discharge lamp |
| 06/27/2012 | CN101754512B Control circuit of light-dimming assembled lamp |
| 06/27/2012 | CN101658067B Circuit arrangement for igniting and operating a discharge lamp |
| 06/27/2012 | CN101526726B Driving method of light source apparatus for projector |
| 06/27/2012 | CN101426325B Output voltage external controlling circuit for isolation type switch power circuit |
| 06/27/2012 | CN101415285B High-frequency feedback circuit |
| 06/27/2012 | CN101325835B Power control method and apparatus for adjusting light of gas discharging light source |
| 06/27/2012 | CN101315407B Solar simulator |
| 06/27/2012 | CN101288346B Electronic ballast device and method for operating an electric lamp |
| 06/27/2012 | CN101276073B LCD backlight high-voltage power supply converting system |
| 06/26/2012 | US8207687 Dimmable driver circuits for light emitting diodes |
| 06/26/2012 | US8207684 Buck converter and method for providing a current for at least one LED |
| 06/26/2012 | US8207681 Circuit arrangement and method for regulating the current through at least one discharge lamp |
| 06/26/2012 | US8207676 Ambient light compensation sensor and procedure |
| 06/21/2012 | WO2012081350A1 Highly stable dimming device |
| 06/21/2012 | WO2012081320A1 Discharge lamp lighting device |
| 06/21/2012 | WO2012081106A1 Projection display device and restart processing method |
| 06/21/2012 | WO2011134800A3 Method for operating a gas discharge lamp and gas discharge lamp system |
| 06/21/2012 | US20120153859 Driving circuit for driving light emitting diodes and signal-extending circuit applied to a driving circuit for driving light emitting diodes |
| 06/21/2012 | US20120153858 Switching Parameter Based Discontinuous Mode-Critical Conduction Mode Transition |
| 06/21/2012 | US20120153843 Dimmer system and method |
| 06/21/2012 | US20120153839 Automatic color correction for a dome light display device |
| 06/21/2012 | DE112009005146T5 Entladungslampen-Beleuchtungsvorrichtung A discharge lamp lighting device |
| 06/20/2012 | EP2465330A1 Method for controlling a voltage transformer for overvoltage protection, voltage transformer and operating device having a voltage transformer |
| 06/20/2012 | EP2465329A1 Spectral shift control for dimmable ac led lighting |
| 06/20/2012 | CN202282900U 照明稳压节电柜 Regulators saving cabinet lighting |
| 06/20/2012 | CN202282329U 新型节能灯 New energy-saving lamps |
| 06/20/2012 | CN202281119U Mixed spectrum light fixture capable of adjusting spectrum |
| 06/20/2012 | CN1922935B Control circuit for converters |
| 06/20/2012 | CN1849027B Integrated circuit capable of enhanced lamp ignition |
| 06/20/2012 | CN102511202A Cosine (phi) correction in current- or power-controlled operating devices for lighting devices |
| 06/20/2012 | CN102510650A Self-adaptation energy-saving lighting system |
| 06/20/2012 | CN102510649A Starter circuit of electronic ballast |
| 06/20/2012 | CN102510648A Electronic ballast and energy saving lamp adopting same |
| 06/20/2012 | CN102510647A Double inverter power supply used for large-power electronic ballast |
| 06/20/2012 | CN102510646A Remote intelligent monitoring system for street lamp |
| 06/20/2012 | CN102506382A Solar luminous decoration |
| 06/20/2012 | CN101930710B Apparatus of driving light source for display device |
| 06/20/2012 | CN101877571B Multi-frequency oscillator applied to electronic ballast |
| 06/20/2012 | CN101455126B Discharge-lamp lighting device and luminaire |
| 06/20/2012 | CN101431851B D/A signal superposition feedback circuit |
| 06/20/2012 | CN101180786B Inverter, its control circuit, and light emitting device and liquid crystal television using the same |
| 06/20/2012 | CN101164385B Protection of an emitting branch of an interface device |
| 06/20/2012 | CN101076214B Illuminating circuit |
| 06/19/2012 | US8203581 Method of LED dimming using ambient light feedback |
| 06/19/2012 | US8203280 Light source device, projector, and driving method of discharge lamp |
| 06/19/2012 | US8203279 Method of dimming |
| 06/19/2012 | US8203277 Efficient electrically isolated light sources |
| 06/19/2012 | US8203273 Ballast circuit for a gas discharge lamp that reduces a pre-heat voltage to the lamp filaments during lamp ignition |
| 06/19/2012 | US8203272 Plasma lamp with dielectric waveguide integrated with transparent bulb |
| 06/14/2012 | WO2012077125A1 A system for monitoring and controlling high intensity discharge (hid) lamps |
| 06/14/2012 | WO2012076643A1 Control cap for discharge lamps |
| 06/14/2012 | WO2012042412A3 Device and method for automatically detecting installed lamp type |
| 06/14/2012 | US20120146546 Load current balancing circuit |
| 06/14/2012 | US20120146545 Driver circuit with primary side state estimator for inferred output current feedback sensing |
| 06/14/2012 | US20120146541 Circuitry to control a switching regulator |
| 06/14/2012 | US20120146537 Variable-inductor electronic ballasts |
| 06/14/2012 | US20120146536 Led lighting system |
| 06/14/2012 | US20120146535 Led controller asic and pwm module thereof |
| 06/14/2012 | US20120146534 DC/AC Inverter |
| 06/14/2012 | DE112010002818T5 Beleuchtungsdimmer Lighting dimmer |
| 06/14/2012 | DE102011088400A1 Discharge lamp illumination device i.e. headlamp illumination device, for use in motor car, has connection terminal connected with dummy-load, which is used during testing of illumination unit in place of discharge lamp |
| 06/14/2012 | DE102010062760A1 Steuerungskappe für Entladungslampen Control cap for discharge lamps |
| 06/14/2012 | DE102010054381A1 Method for supplying power to high pressure discharge lamp, involves setting voltage between supply conductor and additional conductor as voltage drop, so that power is fed to discharge lamp according to set voltage drop |
| 06/13/2012 | EP2464201A1 Light control module |
| 06/13/2012 | EP2463850A1 Apparatus and method for automatic brightness control for use in liquid crystal display device |
| 06/13/2012 | EP2462784A1 Method for actuating a discharge lamp and circuitry for operating such a lamp |
| 06/13/2012 | EP2022296B1 Multistrike gas discharge lamp ignition apparatus and method |
| 06/13/2012 | CN202276535U 新型照明稳压节电柜 The new energy-saving lighting regulator cabinet |
| 06/13/2012 | CN202276534U 灯驱动器 Lamp driver |
| 06/13/2012 | CN202276533U 灯驱动器 Lamp driver |
| 06/13/2012 | CN102498754A Fluorescent ballast with inherent end-of-life protection |
| 06/13/2012 | CN102498753A Power factor correction method and device for discharge lamps, for example high pressure sodium lamps |
| 06/13/2012 | CN102497714A Two-stage alternating current voltage transformation electrodeless lamp |
| 06/13/2012 | CN102497713A Electrodeless lamp dimming circuit and method |
| 06/13/2012 | CN102497712A Two-channel control device capable of prolonging subsequent current supply of HID (high intensity discharge) ballast |
| 06/13/2012 | CN101953229B Combined ballast for fluorescent lamp and light emitting diode and method of driving same |
| 06/13/2012 | CN101728211B CCFL device with a principal amalgam |
| 06/13/2012 | CN101541129B Discharge lamp lighting apparatus, method for controlling the same, and projector |
| 06/13/2012 | CN101499374B Transformer and multi-light tube driving circuit employing the same |