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)
11/2002
11/12/2002US6479949 Power regulation circuit for high frequency electronic ballast for ceramic metal halide lamp
11/12/2002US6479948 Starting device for discharge lamp
11/12/2002US6479947 Ultraviolet fluorescent lamp with unique drive circuit
11/12/2002US6479946 Method and system for driving high pressure mercury discharge lamp, and image projector
11/10/2002CA2385676A1 Operating device for light sources having cost-effective wound items
11/07/2002WO2002043087A3 Apparatus for providing overload protection for a circuit
11/07/2002WO2002041671A3 Protocol enhancement for lighting control networks and communications interface for same
11/07/2002WO2002041669A3 Voltage regulated electronic ballast for mutliple discharge lamps
11/07/2002US20020164163 Flash device, lens-fitted photo film unit, camera, light measuring device, and method of producing lens-fitted photo film unit
11/07/2002US20020163822 Lamp grounding and leakage current detection system
11/07/2002US20020163315 High-intensity discharge lamp and high-intensity discharge lamp operating apparatus
11/07/2002US20020162779 Point-of-use water treatment system
11/07/2002DE10121479C1 Automobile headlamp switched between different lighting functions via end stage provided with noise suppression filter circuit
11/06/2002EP1255425A2 Flash device
11/06/2002EP1255424A2 Electronic flash device of automatic light adjusting type
11/06/2002EP1255423A1 UV water treatment system
11/06/2002EP1255346A2 Transformer with integrated choke coil
11/06/2002EP0998837B1 Variable high frequency lamp controllers and systems
11/06/2002EP0990248B1 Unit comprising a short-arc discharge lamp with a starting antenna
11/06/2002CN2520093Y Control circuit for high-pressure discharge lamp tube
11/06/2002CN2520092Y Switch for fluorescent lamp
11/06/2002CN1378767A Compander for power control in ballast
11/06/2002CN1378414A Discharging lamp ignitor and lighting device
11/06/2002CN1378413A Output circuit of electronic ballast of fluorescent lamp
11/06/2002CN1378412A High brilliance discharge lamp ignitor and lighting device
11/06/2002CN1378411A Fuorescent lamp starter without flash
11/05/2002US6476568 Gas discharge lamp lighting device
11/05/2002US6476567 Control gear for fluorescent lamps
11/05/2002US6476566 Method and apparatus for canceling ripple current in a lamp
11/05/2002US6476564 Flash light emitting device
11/05/2002US6476557 Non-rotating electrodeless lamp containing molecular fill
10/2002
10/31/2002WO2002087290A1 Circuit arrangement for discharge lamp comprising a resonant half-bridge converter driven by a class-e driver
10/31/2002WO2002056646A3 Ballast for a discharge lamp
10/31/2002WO2002056645A3 Ballast for a discharge lamp
10/31/2002WO2002037903A3 Circuit arrangement
10/31/2002US20020158591 Digital dimming fluorescent ballast
10/31/2002US20020158589 Pulsed operation method for a silent discharge lamp
10/31/2002US20020158188 Multi-element electron-transfer optical detector system
10/30/2002EP1253810A2 Inverter circuits
10/30/2002EP0873568B1 Ballast for discharge lamp and method and apparatus for manufacturing the same
10/30/2002EP0838129B1 Electronic ballast
10/30/2002CN2519583Y Lamp regulating luminance using inductance quantity
10/30/2002CN2519582Y 电子镇流器 Electronic Ballast
10/30/2002CN2519117Y Explosion-proof electronic energy-saving lamp
10/30/2002CN1377214A Illuminating system for providing effects of sunrise and sunset
10/30/2002CN1093731C Constant-stable-power power supply for gas discharging lamp
10/29/2002US6473320 Voltage converter circuit with self-oscillating half-bridge configuration and with protection against hard switching
10/29/2002US6472876 Sensing and balancing currents in a ballast dimming circuit
10/29/2002US6472830 Discharge lamp lighting circuit
10/29/2002US6472829 Discharge lamp lighting circuit
10/29/2002US6472828 Control for projector lamp heat dissipation
10/29/2002US6472827 Parallel-resonant inverter-type fluorescent lamp ballast
10/27/2002CA2345456A1 Method and apparatus for controlling lights
10/24/2002US20020154884 Method for controlling electron stream within lamp of cold cathode fluorescent tube, method for driving cold cathode fluorescent tube type illumination device using the same, cold cathode fluorescent tube type illumination device and LCD having the same
10/24/2002US20020154258 Fluorescent lamp, fluorescent lamp unit, liquid crystal display device, and method of emitting light
10/24/2002US20020153986 Transformer for ignitor
10/24/2002US20020153852 Twin dimming controller for backlight system
10/24/2002US20020153849 Electronic dimmable ballast for high intensity discharge lamp
10/24/2002US20020153848 Lamp ballast for reducing interference current
10/24/2002DE10119106A1 Transformer for switch-mode power supply, has three cores formed as separate components and with air gaps between
10/24/2002DE10118290A1 Photographic lighting unit especially flash device, has control unit arranged on flash head
10/23/2002EP1251723A2 Ballast unit for light sources in lamp posts
10/23/2002EP1181844B1 Method and ballast for feeding a uv light low pressure radiator
10/23/2002EP1110434B1 Electronic ballast for a discharge lamp comprising dielectrically impeded discharges
10/23/2002CN2518297Y Electronic ballast of fluorescent light
10/23/2002CN2518296Y Device for eliminating flash of fluorescence lamp tube
10/23/2002CN1376024A Sealed heat-dissipating casing for great-power electronic ballast
10/22/2002US6469922 Method and apparatus for controlling minimum brightness of a flourescent lamp
10/22/2002US6469454 Cold cathode fluorescent lamp controller
10/22/2002US6469453 Backlight for liquid crystal display
10/22/2002US6469447 Fluorescent lamp lighting apparatus
10/22/2002US6469427 Lamp having improved electrical connection
10/22/2002US6467941 Vehicle lighting unit
10/22/2002CA2110180C Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like
10/17/2002WO2002082870A1 Illumination regulator
10/17/2002WO2002082869A1 Output circuit of an electronic ballast for a fluorescent lamp
10/17/2002WO2002082868A1 Discharge lamp lighting device
10/17/2002WO2002082867A1 Discharge lamp lighting device
10/17/2002WO2002082865A1 Starter for an non-flash fluorescent lamp
10/17/2002WO2002082501A1 Electrodeless discharge lamps and bulb containing sulfur, selenium or tellurium
10/17/2002WO2002071815A3 Flashlamp drive circuit
10/17/2002WO2002035892A3 Electronic ballast with continued conduction of line current
10/17/2002US20020149326 Flashlamp drive circuit
10/17/2002US20020149325 Method and circuit arrangement for operating a sodium high-pressure lamp
10/17/2002DE10205903A1 Fluorescent lamp has discharge gas between two substrates, emits light by causing electrical discharge in different surfaces in accordance with voltages applied to discharge electrodes
10/17/2002DE10117625A1 Voltage adapter for gas discharge lamps has storage capacitance unit in parallel with voltage conversion unit and before gas discharge lamp; microcomputer unit controls charging and ignition
10/17/2002DE10117582A1 Voltage adapter for lamps in lamp masts has two-part tubular housing for installation in light masts with ribbing on at least lower housing part for fitting operating equipment for lamp
10/17/2002DE10116255A1 Scheinwerfer für Fahrzeuge Headlights for vehicles
10/17/2002DE10116253A1 Scheinwerfer für Fahrzeuge Headlights for vehicles
10/16/2002EP1250030A2 High frequency/high power factor inverter circuit with combination cathode heating
10/16/2002EP1002450B1 Method for operating a direct current metal halogen arc lamp and circuit pertaining thereto
10/16/2002CN2517224Y Electronic ballast for fluorescent lamp
10/16/2002CN2517223Y Preheating starting and overcurrent protection control device of electric ballast
10/16/2002CN2517222Y Electronic ballast for 600 watts high-tension sodium lamp
10/16/2002CN2517221Y Series resonance transformer for neon lamp
10/16/2002CN2517220Y Constant light inductance ballast
10/16/2002CN2517219Y Electronic trigger for high-tension sodium lamp
10/16/2002CN2517201Y Clock-pulse generator for LED flash light
10/16/2002CN2517082Y Electronic ballast casing
10/16/2002CN1374824A Protective electric circuit for fluorescent lamp
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