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)
06/2000
06/04/2000CA2277465A1 Capacitive glow starting of high intensity discharge lamps
06/02/2000WO2000015013A3 Ballast circuit with lamp current regulating circuit
06/02/2000WO2000013472A3 Electronic ballast for a discharge lamp comprising dielectrically impeded discharges
05/2000
05/31/2000EP1004067A2 Low-voltage high-efficiency fluorescent signage, particularly exit sign
05/31/2000EP0886882B1 Gas discharge lamp, in particular for a motor-vehicle headlight
05/31/2000EP0738455B1 Device for operating a gas discharge lamp
05/31/2000DE19853657A1 Control gear for fluorescent cold cathode lamp with lamp current controlled by resonant circuit
05/31/2000CN2381093Y Electronic ballast
05/30/2000US6069458 Power supply circuit device for a high intensity discharge lamp that repetitively lights the lamp using a pulse-by-pulse mode current limiting function
05/30/2000US6069455 Ballast having a selectively resonant circuit
05/30/2000US6069454 Ignition circuit for a discharge lamp
05/30/2000US6069453 Ballast circuit for reducing striations in a discharge lamp
05/30/2000US6069449 Backlight control device for an LCD
05/30/2000US6069448 LCD backlight converter having a temperature compensating means for regulating brightness
05/25/2000WO2000030414A1 Lighting system for a high intensity discharge lamp with a lamp holder
05/25/2000WO2000030413A1 Improvements to electronic ballasts
05/25/2000WO2000030412A1 Lighting system with a high intensity discharge lamp
05/25/2000WO2000030410A1 Neon sign transformer module and receptacle
05/25/2000WO2000030409A1 Control device for illumination system with light sensor
05/25/2000WO2000030408A1 Resonant converter circuit
05/25/2000CA2350493A1 Improvements to electronic ballasts
05/25/2000CA2350436A1 Neon sign transformer module and receptacle
05/24/2000EP1003357A1 Discharge lamp igniting apparatus
05/24/2000EP1003356A2 Discharge lamp lighting apparatus and manufacturing method therefor
05/24/2000EP1003355A1 Starting booster device for discharge lamp
05/24/2000EP1002450A1 Method for operating a direct current metal halogen arc lamp and circuit pertaining thereto
05/24/2000EP0739578B1 System to optimize artificial lighting levels with increasing daylight level
05/24/2000CN2379992Y High work factor electronic ballast
05/24/2000CN2379991Y Power supply device for high strength gas discharge lamp
05/24/2000CN2379990Y Ballast for double tube single based fluorescence lamp with quick starting function
05/24/2000CN2379989Y Ballast for high performance single/double tube fluorescence lamp
05/24/2000CN1254249A Electronic ballast capable of being combined into one body with straight tube type fluorescent light tube
05/24/2000CN1052844C Control method of operating neon discharge lamp
05/23/2000US6066926 Electronic flash device and power supply circuit
05/23/2000US6066921 Discharge lamp lighting device
05/23/2000US6066920 Illumination device, method for driving the illumination device and display including the illumination device
05/23/2000CA2012814C Acoustic resonance operation for xenon-metal halide lamps
05/18/2000WO2000028647A1 Dc-ac converter circuit using resonating multi-layer piezoelectric transformer
05/18/2000WO2000002423B1 Power supply for gas discharge lamp
05/17/2000EP1001663A2 Electronic ballast for operating high pressure gas discharge lamps
05/17/2000EP1001662A2 Gas discharge lamp ballast with output voltage clamping circuit
05/17/2000EP1001661A1 Light source using dielectric barrier discharge lamp, and power supply
05/17/2000EP0879549B1 Dimmer for fluorescent lighting
05/16/2000US6064949 Method and apparatus for controlling a screening device based on more than one set of factors
05/16/2000US6064160 Light modulation circuit
05/16/2000US6064159 Power-saving stroboscopic device
05/16/2000US6062706 Variable color fluorescent lighting
05/11/2000WO2000027013A1 Emergency light element for actuating fluorescent lamps in case of mains breakdown
05/11/2000DE19851652A1 Vorschaltgerät zum Betreiben von Hochdruckgasentladungslampen Ballast for operating high-pressure gas discharge lamps,
05/11/2000DE19850441A1 Verfahren und Vorschaltgerät zum Betrieb einer mit einer Leuchtstofflampe versehenen Leuchte The method and ballast for operating a fluorescent lamp provided with a lamp
05/11/2000DE19850336A1 Current supply for energy-saving gas discharge lamp has intermediate charge storage capacitor inserted between network stage and voltage converter supplying lamp
05/10/2000EP0998837A1 Variable high frequency lamp controllers and systems
05/10/2000EP0739532A4 Method and apparatus for controlling lamp intensity
05/10/2000CN1052372C 放电灯照明器件 Discharge lamp lighting device
05/09/2000US6061528 Flash device
05/09/2000US6060844 Method and apparatus of an improved electronics ballast circuit
05/09/2000US6060843 Method and control circuit for regulation of the operational characteristics of gas discharge lamps
05/09/2000US6060842 Electronic ballast lighting power control device
05/09/2000US6059435 Headlight of a vehicle for high beam light and low beam light
05/04/2000WO2000025556A1 Circuit arrangement
05/04/2000WO2000025555A1 Circuit arrangement
05/04/2000WO2000025554A2 Method and ballast for operating a lamp fitted with a fluorescent tube
05/04/2000WO2000013204A3 Operational method and electronic ballast for a discharge lamp comprising dielectrically impeded discharges
05/03/2000EP0998172A2 Process and device for short-circuit detection in a high-pressure discharge lamp ballast in a vehicle
05/03/2000EP0997345A2 Display lighting device
05/03/2000EP0997059A1 Discharge lamp
05/03/2000CN2376697Y Gaseous discharging lamp
05/03/2000CN1252166A High-pressure discharge lamp
05/02/2000US6057674 Energy saving power control system
05/02/2000US6057653 Discharging tube with voltage raising unit and discharging unit and discharging method thereof
05/02/2000US6057652 Power supply for supplying AC output power
05/02/2000US6057650 Input circuit for the starter of a high-pressure gas-filled discharge lamp
05/02/2000US6057649 Illumination unit, electrodeless low-pressure discharge lamp, and coil suitable for use therein
05/02/2000US6057648 Gas discharge lamp ballast with piezoelectric transformer
05/02/2000US6057631 Piezoelectric transducing inverter
05/02/2000US6057611 Switching control of an operating circuit
05/02/2000CA2072895C Strobe alarm circuit
04/2000
04/27/2000WO2000024233A2 Ballast circuit
04/27/2000WO2000024232A1 Apparatus for dimming a fluorescent lamp with a magnetic ballast
04/27/2000WO2000024231A1 Ballast circuit with independent lamp control
04/27/2000WO2000024230A1 Apparatus for lighting discharge lamp
04/27/2000WO2000024115A1 Circuit for driving piezoelectric transformer
04/27/2000WO2000024104A2 Ground fault protection circuit
04/27/2000WO1999067976A3 Ballast circuit
04/27/2000DE19849244A1 Beleuchtungsvorrichtung für eine Anzeige A lighting device for a display
04/27/2000DE19848757A1 Verfahren und Vorrichtung zur Erzeugung eines Statussignales über den Betriebszustand einer Hochdruckgasentladungslampe in einem Kraftfahrzeug Method and apparatus for generating a status signal on the operating state of a high pressure gas discharge lamp in a motor vehicle
04/27/2000DE19848756A1 Verfahren und Vorrichtung zur Kurzschlußerkennung bei einem Vorschaltgerät einer Hochdruckgasentladungslampe in einem Kraftfahrzeug Method and device for short-circuit detection for a ballast of a high-pressure gas discharge lamp in a motor vehicle
04/27/2000DE19844721A1 Entladungslampe für dielektrisch behinderte Entladungen mit verbesserter Elektrodenkonfiguration Discharge lamp for dielectric barrier discharges with improved electrode configuration
04/27/2000CA2347470A1 Ballast circuit
04/27/2000CA2346886A1 Ground fault protection circuit
04/27/2000CA2346840A1 Ballast circuit with independent lamp control
04/26/2000EP0996315A2 Method and apparatus for generating a status signal representing the operating state of a high-pressure gas discharge lamp in a motor vehicle
04/26/2000CN2376162Y Electromagnetic quick-glos-starting ballast for fluorescent lamp
04/26/2000CN1251733A Power suplly system for group of lamps
04/26/2000CN1051874C Electrodeless low-pressure discharge lamp
04/25/2000US6054816 Active snubbing in a discharge lamp ballast
04/25/2000US6054815 Ballast for a discharge lamp
04/25/2000US6054814 Camera flash charging apparatus for low cost single use camera
04/25/2000US6054813 Neon discharging lamp lighting apparatus with improved lighting
04/20/2000WO2000022892A2 Ballast power control circuit
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