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)
03/2003
03/18/2003US6534934 Multi-lamp driving system
03/18/2003US6534933 High power factor electronic ballast with load dependent bus voltage regulation
03/18/2003US6534932 Method and arrangement for monitoring a gas discharge lamp
03/18/2003US6534931 Dimming control system for electronic ballasts
03/18/2003US6534930 Discharge lamp lighting circuit with protection circuit
03/18/2003US6534929 Electromagnetic ballast for sequentially starting a plurality of a gaseous discharge lamps
03/18/2003US6534928 Method for driving a flat-type lamp
03/18/2003US6534927 Multiple-light cold-cathode tube lighting device
03/18/2003US6534926 Portable fluorescent drop-light
03/18/2003CA2271577C Voltage converter for water treatment system uv bulb
03/17/2003CA2403163A1 Device and method for preheating the coil electrodes of a fluorescent lamp
03/17/2003CA2390400A1 Ballast with protection circuit for quickly responding to electrical disturbances
03/13/2003WO2003022015A1 Adaptive control for half-bridge universal lamp drivers
03/13/2003WO2003022014A1 High-voltage discharge lamp lighting apparatus and automobile headlight apparatus
03/13/2003WO2003022013A1 High-voltage discharge lamp lighting apparatus, high-voltage discharge lamp apparatus, and projection lamp apparatus
03/12/2003EP1290922A2 Gas-discharge lamp including a fault protection circuit
03/12/2003EP1290921A1 Ignition circuitry
03/12/2003EP1290763A2 Switching power supply for discharge lamp and method for powering a lamp
03/12/2003EP0858724B1 Circuit arrangement
03/12/2003EP0774199B1 Ballast circuit
03/12/2003CN2540054Y Lamp holder type anion generator
03/12/2003CN1402601A Discharge lamp ignition device, instrument and image forming device
03/12/2003CN1402600A Multiple lamp tube driving system
03/12/2003CN1402374A Flasher charging device
03/11/2003US6531835 Back lighting source module for liquid crystal display
03/11/2003US6531833 Single ballast for powering at least one high intensity discharge lamp
03/11/2003US6531832 Discharge lamp and electronic flash device using the same
03/11/2003US6531831 Integrated circuit for lamp heating and dimming control
03/11/2003US6531830 Discharge-lamp drive apparatus
03/11/2003US6531824 Universal electronic plug-in replaceable fluorescent lamp ballast and adapter
03/11/2003US6531810 Electric load
03/06/2003WO2003019994A1 Circuit arrangement
03/06/2003WO2003019993A1 Circuit arrangement
03/06/2003WO2003019992A1 High frequency electronic ballast
03/06/2003WO2003019991A1 Discharge lamp lighting device
03/06/2003WO2003019990A1 Electronic ballast with piezoelectric ceramics
03/06/2003WO2001074570A9 Apparatus and system for the production of plastic lenses
03/06/2003US20030042857 Electrodeless lamp system
03/05/2003EP1289350A1 Working circuit for discharge lamp with electrode heater
03/05/2003EP1289349A2 Discharge lamp device
03/05/2003EP1289348A2 Lamp lighting apparatus and projector using the same
03/05/2003EP1289347A2 Ballast with fast-responding lamp-out detection circuit
03/05/2003EP1289346A1 Device for driving discharge lamp
03/05/2003EP1288998A1 Mercury-free metal halide lamp, its contents and electric power control depending on resistance property
03/05/2003EP1287289A1 Microwave excited ultraviolet lamp with optical component
03/05/2003EP1097613B1 Electronic ballast for high intensity discharge lamp
03/05/2003EP1013153B1 Method to prevent spurious operation of a fluorescent lamp ballast
03/05/2003CN2539379Y 谐振开关式电子镇流器 Resonant switching electronic ballasts
03/05/2003CN2539344Y Multi-group load driving circuit for piezoelectric converting circuit
03/05/2003CN2539289Y 压电陶瓷晶体管 Piezoelectric ceramic transistor
03/05/2003CN1401208A A system and method for employing pulse widthmodulation for reducing vertical segregation in a gas discharge lamp
03/05/2003CN1401207A Ballast and method of feeding a fluorescent lamp
03/05/2003CN1401206A Apparatus for providing overload protection for a circuit
03/05/2003CN1401205A Multiple lamp LCD backlight driver with coupled magnetic components
03/05/2003CN1400852A Electroncic filament-switching preheating circuit of fluorescence discharge lamp ballost
03/05/2003CN1400626A Intensified voltage-multiplying rectifier fluorescent light
03/04/2003US6528957 Power/energy management control system
03/04/2003US6528956 Electronic ballast for high-intensity discharge lamps
03/04/2003US6528955 Ballast system for a fluorescent lamp
03/04/2003US6528946 Compact-type metal halide discharge lamp
02/2003
02/27/2003WO2003017736A1 Method for operating a hid lamp using duty cycle modulation
02/27/2003WO2002047444A3 Ballast circuit
02/27/2003US20030039475 Electronic flash device
02/27/2003US20030039131 Circuit arrangement
02/27/2003US20030038602 High frequency, high efficiency electronic lighting system with sodium lamp
02/27/2003US20030038601 Circuit arrangement
02/27/2003DE20211048U1 Device for preheating a fluorescent lamp uses the existing current flow directly to heat the lamp
02/27/2003CA2399793A1 Operating circuit for a discharge lamp with preheatable electrodes
02/26/2003EP1286574A1 Ballast with efficient filament preheating and lamp fault detection
02/26/2003EP1286573A2 Discharge lamp ballast circuit
02/26/2003EP1286572A2 Ballast for operating at least one low-pressure discharge lamp
02/26/2003EP1285558A1 Lamp ignition with automatic compensation for parasitic capacitance
02/26/2003CN2538115Y 电子镇流器 Electronic Ballast
02/26/2003CN2538114Y Energy saviung self starting ballast for daylight lamp
02/26/2003CN1399789A High output lamp with high brightness
02/26/2003CN1399505A Fluorescent lamp brightness regulator
02/25/2003US6526233 Circuit for a photographic flash
02/25/2003US6525492 Ballast control IC with minimal internal and external components
02/25/2003US6525491 Stabilizing the operation of gas discharged lamps
02/25/2003US6525489 Circuit arrangement for operating electric lamps
02/25/2003US6525479 Method and ballast for operating a lamp fitted with a fluorescent tube
02/20/2003WO2003015480A1 Method for color mixing of hid lamps operated at vhf frequencies using duty cycle modulation
02/20/2003WO2003015479A1 Discharge lamp operating circuit and control method therfor
02/20/2003US20030034744 Discharge lamp ballast circuit
02/20/2003US20030034743 Power factor correction device including electronic ballast function
02/19/2003EP1201106B1 Electronic ballast
02/19/2003CN2537119Y Adjustable time and self-turn-off electronic energy-saving lamp
02/19/2003CN1398504A Voltage-FEd push-pull LLC resonant LCD backlighting inverter circuit
02/19/2003CN1398503A System for overvoltage protection during pulse width modualtion dimming of LCD
02/19/2003CN1398502A Ballast circuit arrangement
02/19/2003CN1397872A Portable computer system and its control method
02/18/2003US6522557 Inverter device
02/18/2003US6522089 Electronic ballast and method for arc straightening
02/18/2003US6522088 Lamp ignition with automatic compensation for parasitic capacitance
02/18/2003US6522087 Ultra-high voltage impulse generator
02/18/2003US6522085 High light output electrodeless fluorescent closed-loop lamp
02/18/2003US6522082 Electronic ballast for discharge lamp comprising dielectrically impeded discharges
02/18/2003CA2226498C Electrical power control system
02/18/2003CA2116347C A resonance mode converter with series-parallel resonance
02/13/2003WO2003013196A1 Power supply and/or ballast system controlled by desired load power spectrum
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