Patents
Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100)
12/2005
12/21/2005EP1606978A1 System for controlling and regulating continuously the luminous flow of every single lamp derived on a parallel line
12/21/2005EP1606679A2 High voltage offset detection circuit and method
12/21/2005CN2747818Y Adjustable highting ballast circuit having strip lamp resistance feedback net
12/21/2005CN1711807A Power supply apparatus, backlight assembly and liquid crystal display apparatus having the same
12/21/2005CN1711806A Circuit arrangement for operating a high pressure discharge lamp
12/21/2005CN1711805A Circuit arrangement for operating a high pressure discharge lamp
12/21/2005CN1711006A DC type fluorescent lamp light-regulator
12/20/2005US6977642 Back light and liquid crystal display
12/20/2005US6977472 Electrodeless self-ballasted fluorescent lamp and discharge lamp operating device
12/18/2005CA2508128A1 Parallel power supply system for low voltage devices
12/15/2005WO2005120138A1 Method and circuit arrangement for operating a high-pressure gas discharge lamp
12/15/2005WO2005120137A1 Flashlamp drive circuit
12/15/2005US20050276033 Regulating a light source using a light-to-frequency converter
12/15/2005US20050275523 Flashing device for vehicle
12/15/2005US20050275384 Capacitor charging circuit, flash unit, and camera
12/15/2005US20050275357 Liquid crystal display and control method thereof
12/15/2005US20050275356 Circuit with switch-off device for the operation of light sources
12/15/2005US20050275355 Method and system for enhanced dimming resolution in a light ballast through use of multiple control frequencies
12/15/2005US20050275353 Circuit for the operation of light sources
12/15/2005DE202005013675U1 Electronic fluorescent lamp ballast for discharge lamps, has end-of-life monitoring circuit and differential amplifier, where reference current along with current at which asymmetrical performance is detected is applied to amplifier
12/15/2005DE19916016B4 Leuchte und deren Verwendung für tiefe Temperaturen und Verfahren zum Umrüsten der Leuchte Light and their use at low temperatures and methods for converting the light
12/15/2005CA2509876A1 Circuit with switch-off device for the operation of light sources
12/15/2005CA2509874A1 Circuit for the operation of light sources
12/14/2005EP1605734A1 Electronic ballast
12/14/2005EP1605731A2 LED with load connected in parallel
12/14/2005EP1605495A2 Lamp for mounting in or at a piece of storage forniture
12/14/2005EP1604546A2 High intensity discharge lamp ballast circuit
12/14/2005CN2746710Y Computer controller
12/14/2005CN2746709Y Electric saver for lighting device
12/14/2005CN2746708Y Large power fluorescent lamp electronic ballast
12/14/2005CN1709014A Igniting pulse booster circuit
12/14/2005CN1708203A Fluorescent/sodium lamp illumination power-saving device
12/14/2005CN1707381A Power supply device and vehicle lamp
12/14/2005CN1232158C Electronic system for generating and controlling light effects on projectors
12/14/2005CN1231823C 电路布置 Circuit layout
12/14/2005CN1231807C Electronic flash device for photograph film unit provided with camera lens
12/13/2005US6975198 Inductive coil assembly
12/13/2005US6975077 High intensity discharge lamp ballast apparatus
12/13/2005US6975076 Charge pump circuit to operate control circuit
12/13/2005US6975071 Voltage booster of headlight
12/13/2005US6975069 Multi-phase gas discharge lamps
12/13/2005CA2288874C Gas discharge lamp drive circuitry
12/08/2005WO2005117505A1 Discharge lamp lighting apparatus
12/08/2005WO2005117502A2 Simplified electronic ballast circuit and method of operation
12/08/2005WO2005038828A3 A current sharing scheme and device for multiple ccf lamp operation
12/08/2005US20050273237 Control method and control structure for lighting system
12/08/2005US20050271376 Strobe light emitting apparatus and camera
12/08/2005US20050269998 DC-AC converter and controller IC therefor
12/08/2005US20050269976 LCD back light panel lamp connecting structure
12/08/2005US20050269975 LCD back light panel lamp connecting structure
12/08/2005US20050269974 Multi-phase input dimming ballast with flyback converter and method therefor
12/08/2005US20050269973 Driving device of light source for display device
12/08/2005US20050269972 Ballast with end-of-lamp-life protection circuit
12/08/2005US20050269970 Display device and driving device of light source for display device
12/08/2005US20050269969 Driver for a gas discharge lamp
12/08/2005US20050269968 Power supply device and vehicle lamp
12/08/2005US20050269966 High pressure discharge lamp
12/08/2005US20050269964 Multi-phase input ballast with dimming and method therefor
12/08/2005US20050269963 Lighting apparatus for high intensity discharge lamp
12/08/2005US20050269480 Multifunction multi-spectrum signalling device
12/08/2005DE102004022571A1 Elektronisches Vorschaltgerät für eine Lampe Electronic ballast for a lamp
12/07/2005EP1602879A2 Headlamp for vehicles with a shielding housing for the ballast unit of the discharge lamp
12/07/2005EP1602168A1 A dc-dc converter with reduced surge voltage and an electronic ballast including the converter for a discharge lamp
12/07/2005EP1268173B1 Apparatus and system for the production of plastic lenses
12/07/2005CN1706200A Image projector with intensity-controlled light source
12/07/2005CN1705421A Digital remote controlled dimmer switch capable of controlling energy-saving lamp
12/06/2005US6972531 Method for operating at least one low-pressure discharge lamp
12/06/2005US6972529 Switch mode power supply for a gas discharge lamp
12/06/2005US6972523 Metal halide lamp control device with linear control power transducer
12/06/2005US6972415 Fluid treatment system with UV sensor and intelligent driver
12/06/2005CA2242028C Universal power supply for discharge lamps
12/06/2005CA2211467C Inverter for the power supply of discharge lamps with means for improving the power factor
12/01/2005WO2005072454A3 Method and apparatus for dimming control of electronic ballasts
12/01/2005WO2004103026A3 Digital electronic ballast control apparatus and method
12/01/2005US20050264516 Apparatus and method for driving lamp of liquid crystal display device
12/01/2005US20050264243 Ballast for a discharge lamp having a continuous-operation control circuit
12/01/2005US20050264241 Apparatus for controlling CCFL and method for operating the same
12/01/2005US20050264240 Simplified electronic ballast circuit and method of operation
12/01/2005US20050264239 Cold cathode fluorescent lamp drive apparatus and method
12/01/2005US20050264237 Lighting device for discharge lamp
12/01/2005US20050264236 Apparatus and method for use in triggering a flash lamp
12/01/2005US20050264225 Deriving power for an external device from a fluorescent light power source
12/01/2005US20050264224 Fluorescent light power source for supplying power to an external device
12/01/2005US20050264220 Power source mounted to a fluorescent light
12/01/2005US20050264217 Controller for power protection
12/01/2005DE102005011189A1 Transformer drive circuit for display backlight drive, has two phased signals operating two N-MOSFETS to give floating level voltage
12/01/2005DE102004022555A1 Vorrichtung und Verfahren zum Synchronisieren einer Blinkerfrequenz mit einer Zentralblinkfrequenz Apparatus and method for synchronizing a flasher frequency with a central flashing frequency
12/01/2005CA2507130A1 Controller for power protection
11/2005
11/30/2005EP1601237A2 Ballast with control circuit for the permanent operation of a discharge lamp
11/30/2005EP1599775A2 Digital lighting ballast oscillator
11/30/2005CN2744122Y Intelligent controller for lamplight of motor vehicle
11/30/2005CN2744121Y Charge pump type electronic ballast
11/30/2005CN2744120Y Resonant inverter circuit for reference electronic ballast
11/30/2005CN1703135A Ballast for discharge lamp with continuous operation regulating circuit
11/30/2005CN1703134A Cold cathode fluorescent lamp drive circuit
11/30/2005CN1703133A Lighting device for high pressure discharge lamp
11/30/2005CN1703132A Driving voltage controller for light-emitting source
11/30/2005CN1702539A Illuminating device for photographing and camera
11/30/2005CN1702519A Brightness control device of LCD and method thereof
11/30/2005CN1702500A Apparatus and method for driving lamp of liquid crystal display device