Patents
Sitemap › H05 - Electric techniques not otherwise provided for › H05B - Electric heating; Electric lighting not otherwise provided for › H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps
Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100)
10/2012
10/02/2012US8278831 LED driver circuit and method, and system and method for estimating the junction temperature of a light emitting diode
09/2012
09/27/2012WO2012128426A1 A circuit for discharging at input stage of a driver ic
09/27/2012US20120242246 Lighting device and illumination apparatus
09/27/2012US20120242244 Inverter device and illumination device for use in display device incorporating same and display device
09/27/2012US20120242243 Circuit assembly for operating at least one discharge lamp
09/27/2012US20120242241 Lighting apparatus with at least one led
09/27/2012US20120242240 Ballast efficiency improvement for fluorescent lamps
09/26/2012EP2503588A2 Cathodoluminiscent lighting system
09/26/2012EP2502244A1 Contactless coupling and method for use with an electrical appliance
09/26/2012CN202455640U Switch control circuit of electronic ballast for voice control fluorescent lamp
09/26/2012CN202455639U Integrated circuit chip applied to electronic ballast of fluorescent lamp
09/26/2012CN202455638U Circuit capable of realizing filament preheating and electronic ballast using circuit
09/26/2012CN202455637U Electron tube filament voltage stabilizing device for zone melting
09/26/2012CN202455636U Cold cathode fluorescent lamp (CCFL) illuminating lamp with protection mechanism
09/26/2012CN202455635U High-voltage pulse trigger circuit of electronic ballast
09/26/2012CN202455634U Electronic ballast of electrodeless lamp
09/26/2012CN202455633U Constant power electrodeless lamp ballast
09/26/2012CN202454554U Packaging structure of special half-bridge driving integrated circuit for compact fluorescent lamp
09/26/2012CN1667458B Liquid crystal display system with lamp feedback
09/26/2012CN102696282A System and method for lighting power and control system
09/26/2012CN102696281A Apparatus for driving a gas discharge lamp
09/26/2012CN102695351A Forming circuit of three-section dimming control signals of fluorescent lamp ballast
09/26/2012CN102695350A ADAM control circuit suitable for electrode-less lamp
09/26/2012CN102695349A Remote-control switch control circuit suitable for electrode-less lamp
09/26/2012CN102695348A Anti-interference light sensing control circuit for electrodeless lamps
09/26/2012CN102695347A Power supply circuit for electronic ballast control chip
09/26/2012CN102695346A Electronic ballast of electrodeless lamp
09/26/2012CN102695345A Energy-efficiency intelligent ballast
09/26/2012CN101815397B Electronic ballast of high voltage sodium lamp
09/26/2012CN101684901B Inductively powered apparatus
09/26/2012CN101568216B Inverter circuit and liquid crystal display device
09/26/2012CN101529985B Circuit arrangement and method for igniting a high-pressure discharge lamp
09/26/2012CN101523994B Frequency synchronizing method for discharge tube lighting apparatus, discharge tube lighting apparatus, and semiconductor integrated circuit
09/26/2012CN101500363B Ballast and housing thereof
09/26/2012CN101480109B Method and system for operating a discharge lamp such as to detect defective operation of the lamp
09/26/2012CN101385400B Method and driving unit for driving a gas discharge lamp
09/26/2012CN101365283B Electronic ballast for HID flashlight
09/26/2012CN101330790B Discharge lamp lighting apparatus and projector
09/26/2012CN101194539B A control device for controlling the output of one or more full-bridges
09/25/2012US8274239 Open circuit voltage clamp for electronic HID ballast
09/25/2012US8274238 Electronic circuit for driving a diode load
09/25/2012US8274237 LED driver circuit with over-current protection during a short circuit condition
09/25/2012US8274227 High-efficiency DC ballast arrangement with automatic polarity protection and emergency back-up for lighting fixture in a suspended DC-powered ceiling system
09/20/2012US20120237409 Optical reactor and driving circuit for optical reactor
09/20/2012US20120235592 Modulated LED
09/20/2012DE202012103315U1 Gasentladungslampe, insbesondere für Kfz-Scheinwerfer Gas discharge lamp, in particular for motor vehicle headlight
09/20/2012DE102011005596A1 Elektronisches Vorschaltgerät zum Betreiben mindestens einer LED und/oder mindestens einer Entladungslampe Electronic ballast for operating at least one LED and / or at least one discharge lamp
09/19/2012EP2499885A1 Method for operating a high-pressure discharge lamp on the basis of a low frequency square wave operation and a partially high frequency operation for arc stabilization and color mixing
09/19/2012CN202444685U Novel electrodeless lamp drive circuit
09/19/2012CN202444684U Metal halide lamp electronic ballast
09/19/2012CN202444654U Automobile reading lamp circuit
09/19/2012CN102687596A Lamp end of life detection circuit
09/19/2012CN102685998A 脉冲氙灯控制器 Pulsed xenon lamp controller
09/19/2012CN102685997A High-frequency HID (High Intensity Discharge) electronic ballast with modulated power frequency
09/19/2012CN102685996A Two level lighting ballast
09/19/2012CN102685995A HID (High Intensity Discharge) ballast based on UC2843 chip
09/19/2012CN102685979A Electronic control gear for operating at least one led and/or at least one discharge lamp
09/19/2012CN102682955A Adjustable inductance
09/19/2012CN102679190A Illuminating system and energy-saving lamps thereof
09/19/2012CN101868107B Method and electronic ballast for starting gas discharge lamp for the second time without lamp filaments
09/19/2012CN101554096B Circuit arrangement and method for operating a high-pressure discharge lamp
09/19/2012CN101529993B Ballast with arc protection circuit
09/19/2012CN101513130B Electromagnetic compatibility improvement implemented through high-frequency absorption in luminous equipment and electric ballast
09/18/2012US8269433 Circuit arrangement and method for operating a discharge lamp
09/18/2012US8269429 Apparatus for driving light emitting device
09/18/2012US8269426 Light source apparatus, projector, and light source apparatus drive method
09/18/2012US8269422 Output controllable frequency modulation electronic ballast
09/17/2012DE202012002361U1 Betriebsgerät für Leuchtmittel Operating device for lamps
09/13/2012WO2012120435A2 A method of driving a gas-discharge lamp
09/13/2012WO2012119473A1 Power frequency modulation high frequency hid electronic ballast
09/13/2012WO2012062690A3 Method and device for regulating the power of a high-pressure discharge lamp at two different, alternatively selectable constant levels
09/12/2012EP2498585A1 Control of lamp striking voltage and recovery of energy from resonant lamp strike circuits used for electronic high intensity discharge lamp ballasting and other lamp ballasts
09/12/2012EP2498584A1 Pre-switching device for high pressure gas discharge lamps
09/12/2012EP2497341A1 Electronic ballast circuit for lamps
09/12/2012CN202435701U Automatic controller for electrodeless lamp serving as streetlamp
09/12/2012CN202435700U Rectifier diode group double-control mine lighting circuit
09/12/2012CN202435699U Novel fluorescent lamp ballast
09/12/2012CN202435698U Electronic ballast of high voltage sodium lamp
09/12/2012CN202435697U Novel ballast with two pump power supplies
09/12/2012CN202435696U High-power electronic ballast
09/12/2012CN202435695U Power-failure emergency lighting circuit for mine operation
09/12/2012CN202435694U Coupler base
09/12/2012CN202435693U Radiating ring of controller for electroless lamp
09/12/2012CN202435644U Electronic transformer of LED (Light Emitting Diode) lamp
09/12/2012CN102668719A Device for controlling a plurality of electrical consumers
09/12/2012CN102668718A Solid state lighting apparatus with compensation bypass circuits and methods of operation thereof
09/12/2012CN102668714A Adaptive optics system for harmonization and balanced lighting in information displays
09/12/2012CN102665369A High-power electronic ballast
09/12/2012CN102665368A Low-frequency electrodeless energy-saving lamp ballast
09/12/2012CN102665367A General-purpose electronic ballast
09/11/2012US8264171 In-situ LED junction temperature monitoring using LED as temperature sensor
09/11/2012US8264166 Amp control system by controlling outputs of a buck DC-DC converter
09/11/2012US8264164 Method of driving discharge lamp, driving device, and projector
09/11/2012US8264163 Backlight apparatus and transformer thereof
09/11/2012US8264159 Circuit arrangement and method for operating at least one LED and at least one fluorescent lamp
09/07/2012WO2012116389A1 Change in operating mode of an operating device for light-emitting means
09/07/2012WO2012083327A3 Controlled coil heating for gas-discharge lamps
09/06/2012US20120226385 Method and apparatus for controlling electrical loads to provide positive damping of power grid oscillation
09/06/2012US20120223658 Lamp and luminaire with at least one light emitting diode
09/06/2012US20120223653 Inverter device, display apparatus lighting device provided with same, and display apparatus
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