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)
10/2005
10/20/2005US20050231131 Method of driving lamp and driving circuit therefor
10/20/2005US20050231130 Ballast device having active ballasting circuit and method thereof
10/20/2005US20050231129 Flashlight control circuit
10/20/2005US20050231128 Method and apparatus for the zonal transmission of data using building lighting fixtures
10/19/2005EP1587347A2 Device for controlling a plurality of lighting units
10/19/2005CN2735709Y An integrated light control automatic street lamp
10/19/2005CN2735708Y A mobile station and equipment for controlling illuminator of mobile station
10/19/2005CN2735494Y Inverter controller with automatic brightness adjusting circuit
10/19/2005CN1685737A 投影系统 Projection System
10/19/2005CN1684209A Transformer and lamp tube driving system using said transformer
10/19/2005CN1683971A Driving unit of fluorescent lamp and its driving method
10/19/2005CN1224074C Microwave excited ultraviolet lamp system with lamp cooling system
10/19/2005CN1223893C Photographic roll film unit mounted with lens and electronic flasher used for the same unit
10/18/2005US6957017 Capacitor strobe charging device utilizing current detection to determine malfunction, and strobe and camera using same
10/18/2005US6956556 Liquid crystal display device having an improved backlight
10/18/2005US6956490 Projector with consumable component having memory device
10/18/2005US6956336 Single chip ballast control with power factor correction
10/18/2005US6956335 Circuit arrangement
10/18/2005US6956327 Compact fluorescent lamp, self-ballasted fluorescent lamp and luminaire
10/13/2005WO2005096679A1 Circuit arrangement
10/13/2005WO2005006377A3 A protective and measure device for multiple cold cathode flourescent lamps
10/13/2005US20050226010 Circuit arrangement for a resonant converter and method of operating said converter
10/13/2005US20050225967 Projection system
10/13/2005US20050225514 Backlight driving system for a liquid crystal display device
10/13/2005US20050225265 PFC and ballast control IC
10/13/2005US20050225263 Method and device for identifying the type of discharge lamp
10/13/2005US20050225262 Electronic circuit and method of supplying energy to a high-pressure gas-discharge lamp
10/13/2005US20050225261 Primary side current balancing scheme for multiple CCF lamp operation
10/13/2005US20050225260 Electronic ballast having resonance excitation for generating a transfer voltage
10/13/2005US20050225258 Microwave lamp power supply that can withstand failure in high voltage circuit
10/13/2005US20050225256 Method and apparatus for lamp heat control
10/13/2005US20050225227 [cold cathode fluorescent flat lamp and driving method thereof]
10/13/2005US20050225203 Multi-load driver circuit equipped with piezoelectric transformation circuits
10/13/2005DE4228640B4 Vorschaltgerät für eine Gasentladunglampe mit stromnulldurchgangsgesteuertem Sperrwandler Ballast for a gas discharge lamp with stromnulldurchgangsgesteuertem flyback converter
10/13/2005DE202005011950U1 Electronic lamp ballast device e.g. for building lighting management system, uses heating circuit as voltage supply for external terminal
10/13/2005DE202005010720U1 Circuit arrangement for operating electric lamp, has control unit designed to operate high-side switch in discontinuous mode
10/13/2005DE19524386B4 Stabförmige elektrische Leuchte Rod-shaped electric light
10/13/2005DE102004007451A1 An emergency electrical supply for fluorescent lighting from a DC source has a switching arrangement including detection means for the supply waveform
10/12/2005EP1585373A1 Electronic ballast with current control and positive feedback of a disturbance signal
10/12/2005EP1585372A1 Electronic ballast with resonance excitation for voltage generation takeover
10/12/2005CN2733819Y Pulse xenon lamp with driving power supply
10/12/2005CN2733818Y An electronic ballast
10/12/2005CN2733817Y Electronic ballast capable of being used for fluorescent lamp brightness control
10/12/2005CN2733816Y High-performance energy-saving lamp
10/12/2005CN2733815Y Discharging lamp tube driving system and transformer thereof
10/12/2005CN2733582Y Digital controlled electrodeless lamp
10/12/2005CN1682576A Electronic ballast with charge pump for active power factor calibration
10/12/2005CN1682575A Adaptive ballast control IC
10/12/2005CN1682428A Inverter circuit, fluorescent bulb operating device, backlight device, and liquid crystal display device
10/12/2005CN1681369A Automatic controller and controlling method for preventing injure of ultraviolet light
10/12/2005CN1681368A EVG having resonance excitation for generating a transfer voltage
10/12/2005CN1681367A Microwave lamp power supply that can withstand failure in high voltage circuit
10/12/2005CN1681190A Circuit of reverse-flow circuit with power factor correct
10/12/2005CN1223240C Electronic ballast for a discharge lamp comprising dielectrically impeded discharges
10/12/2005CN1223239C Sequential burst mode activation circuit
10/12/2005CN1222816C External electrode fluorescent lamp, back light unit using it
10/11/2005US6954364 Backlight inverter for liquid crystal display panel with self-protection function
10/11/2005US6954038 Electronic ballast for a discharge lamp
10/11/2005US6954037 Electrodeless lighting system
10/11/2005US6954036 Circuit having global feedback for promoting linear operation
10/08/2005CA2503635A1 Electronic ballast having resonance excitation for generating a transfer voltage
10/06/2005WO2005094138A1 Plasma generation power supply apparatus
10/06/2005WO2005094137A1 High voltage discharge lamp lighting apparatus and luminaire
10/06/2005WO2005093960A1 Single-stage pfc and power converter circuit
10/06/2005WO2005092666A1 Light fixture for cold temperature environments
10/06/2005US20050219881 Circuit having a second ac/dc converter
10/06/2005US20050219872 Power factor correction control methods and apparatus
10/06/2005US20050219863 Dc/ac converter and its controller ic
10/06/2005US20050219030 Leakage transformer
10/06/2005US20050219029 Transformer
10/06/2005US20050218870 Power control methods and apparatus
10/06/2005US20050218839 Dimmable fluorescent lamp package
10/06/2005US20050218838 LED-based lighting network power control methods and apparatus
10/06/2005US20050218833 Ballast for at least one lamp
10/06/2005US20050218832 Capacitor charging circuit and strobe apparatus comprising same
10/06/2005US20050218831 Ballast with circuit for detecting and eliminating an arc condition
10/06/2005US20050218830 Ballast with output ground-fault protection
10/06/2005US20050218829 Method for protecting a ballast from an output ground-fault condition
10/06/2005US20050218828 Converter circuit with coupled inductances
10/06/2005US20050218827 Parallel lighting system for surface light source discharge lamps
10/06/2005US20050218826 Multi-lamp backlight system
10/06/2005US20050218825 Full-bridge and half-bridge compatible driver timing schedule for direct drive backlight system
10/06/2005US20050218824 Electronic ballast with regulating circuit and disturbance variable application
10/06/2005US20050218823 Camera flash apparatus using ultraviolet light for triggering of the flash tube
10/06/2005US20050218814 System and method for generating a discharge in gases
10/06/2005DE202005011887U1 Electronic circuit arrangement for controlling electronic ballast e.g. of fluorescent lamp, has electronic circuit designed for country-specific application of ballast
10/06/2005CA2503981A1 Converter circuit with coupled inductances
10/06/2005CA2503752A1 Electronic ballast with regulating circuit and disturbance variable applications
10/05/2005EP1583403A1 Ballast for at least one lamp
10/05/2005EP1583402A1 Control of lighting devices with a central AC/DC cascaded converter
10/05/2005EP1297727B1 Circuit device
10/05/2005CN2731904Y Remote controller of fluorescent lamp
10/05/2005CN1679377A Device and method for determining the current flowing through a gas discharge lamp
10/05/2005CN1678161A External-electrode fluorescent lamp driving device
10/05/2005CN1678160A Settler of high-strength discharge lamp
10/05/2005CN1678159A Ballast for at least one lamp
10/05/2005CN1677819A Capacitor charging circuit and strobe apparatus comprising same
10/05/2005CN1677583A 变压器 Transformer
10/05/2005CN1677193A Back light unit using external electrode fluorescent lamp
10/05/2005CN1222003C Self power feeding switch element
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