Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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05/04/1995 | WO1995012299A1 Single transistor ballast for gas discharge lamps |
05/04/1995 | WO1995012222A1 Apparatus for coupling electromagnetic radiation to an electrodeless lamp |
05/04/1995 | CA2173489A1 Apparatus for coupling electromagnetic radiation to an electrodeless lamp |
05/03/1995 | EP0651593A2 Control device for an appliance consuming electric power |
05/03/1995 | EP0651592A1 Circuit arrangement for igniting and operating a discharge lamp |
05/03/1995 | CN2196355Y DC electronic transformer for neon light |
05/02/1995 | US5412287 Circuit for powering a gas discharge lamp |
05/02/1995 | US5412286 Variable voltage ballast system for mini-fluorescent lamp |
05/02/1995 | US5412280 Electrodeless lamp with external conductive coating |
04/26/1995 | EP0650313A2 Apparatus for operating a fluorescent lamp of an image forming apparatus |
04/26/1995 | EP0650312A2 Fluorescent lamp energizing circuit |
04/26/1995 | EP0650251A2 Inverter circuits |
04/25/1995 | US5410466 High power-factor inverter device having reduced output ripple |
04/25/1995 | US5410221 Electronic power supply for a load |
04/25/1995 | US5410220 Control circuit for drive circuit of an electronic ballast for a discharge lamp |
04/25/1995 | US5410216 Mercury and neon vapors; interior photoluminescent coating; pulse current |
04/20/1995 | WO1995010930A1 Integrated electronic energy converter |
04/20/1995 | DE4427350A1 Ignition device (starting device) for a high-pressure lamp |
04/20/1995 | DE4335375A1 Power supply unit for feeding a gas-discharge lamp |
04/19/1995 | EP0649271A1 Metal halide electronic ballast |
04/19/1995 | CN2195176Y Electronic ballast for fluorescent lamp |
04/19/1995 | CA2118057A1 Metal halide electronic ballast |
04/18/1995 | US5408403 Power supply circuit with power factor correction |
04/18/1995 | US5408293 Camera system and photometry circuit in an electronic flash device |
04/18/1995 | US5408162 Fluorescent lamp power supply and control unit |
04/13/1995 | WO1995010168A1 Electronic ballast for gas discharge lamps |
04/13/1995 | DE4435916A1 Circuit for driving a plasma |
04/12/1995 | EP0648068A1 Circuit for operating electrical lamps |
04/12/1995 | EP0648067A1 Starter for inductive and capacitive ballasts |
04/12/1995 | EP0648003A1 Circuit arrangement |
04/12/1995 | CN2194584Y Ballast for fluorescen lamp |
04/12/1995 | CN2194583Y Electronic aid ballast |
04/12/1995 | CN2194582Y Wall switch for lamp |
04/11/1995 | US5406471 AC-to-DC converter incorporating a chopper and charge-pump circuit combination |
04/11/1995 | US5406177 Gas discharge lamp ballast circuit with compact starting circuit |
04/11/1995 | US5406175 Lead ballast circuit with power regulation for a gas discharge lamp |
04/11/1995 | US5406174 Discharge lamp operating circuit with frequency control of dimming and lamp electrode heating |
04/11/1995 | US5406173 Apparatus for controlling a light source |
04/07/1995 | EP0746769A4 Automated continuous and random access analytical system and components thereof |
04/06/1995 | DE4433040A1 Electrodeless discharge lamp of high intensity |
04/06/1995 | DE4333886A1 Ignition transformer (starting transformer) for a gas-discharge lamp |
04/06/1995 | DE4333884A1 Ignition circuit (starting circuit) for a high-pressure gas-discharge lamp |
04/05/1995 | EP0647086A1 Inverter circuit for use with discharge tube |
04/05/1995 | EP0647085A1 A control circuit for a gas-discharge lamp, particularly for motor vehicles |
04/04/1995 | US5404095 Mode power supply including self-inductance in the drive circuit |
04/04/1995 | US5404083 Energy-efficient cost-effective electronic ballast |
04/04/1995 | US5404082 High frequency inverter with power-line-controlled frequency modulation |
04/04/1995 | US5404080 Lamp brightness control circuit with ambient light compensation |
04/04/1995 | US5404076 Electrodeless lamp having light transmissive envelope, fill including elemental sulfur, excitation means for coupling electromagnetic energy to fill at specified power density for exciting discharge |
03/29/1995 | EP0645945A1 Flashing light warning device for use in vehicles |
03/29/1995 | EP0645944A1 Electric lamp operating device |
03/29/1995 | EP0645943A1 Electric lamp operating device |
03/29/1995 | CN2193639Y Working frequency low voltage starting ballast for fluorescent lamp |
03/29/1995 | CN2193638Y Energy saving electronic transformer for neon |
03/29/1995 | CN2193637Y Electronic starter for fluorescent lamp |
03/29/1995 | CN2193624Y 功率因数修正装置 Power factor correction device |
03/29/1995 | CN1100848A Power source device |
03/28/1995 | US5402331 Power device |
03/28/1995 | US5402043 Controlled driven series-resonant ballast |
03/28/1995 | US5402040 Dimmable ballast control circuit |
03/28/1995 | US5402039 Non-automatic resetting thermal-protected ballast |
03/28/1995 | US5401394 Water treatment system ultraviolet bulb voltage monitor circuit |
03/23/1995 | WO1995008252A1 Ballast circuit equipped with ground fault detector |
03/23/1995 | WO1995005696A3 Protection circuit for electronic systems in general and for an electronic ballast operating discharge lamps in particular |
03/23/1995 | DE4426664A1 Discharge lamp ignition apparatus |
03/23/1995 | CA2146772A1 Ballast circuit equipped with ground fault detector |
03/23/1995 | CA2132898A1 Method for starting gas discharge lighting systems and starting circuitry therefore |
03/22/1995 | EP0644710A1 Ballast for starting and operating high pressure discharge lamps |
03/22/1995 | EP0644709A1 Device for starting and operating a discharge lamp in a vehicle |
03/22/1995 | EP0643900A1 Electrodeless discharge lamp containing push-pull class e amplifier and bifilar coil |
03/22/1995 | CN2193007Y Automatic quick luminous apparatus for fluorescent lamp |
03/22/1995 | CN2192945Y Anti-explosive ballast |
03/22/1995 | CN2192803Y Multipurpose combined fluorescent lamps with lighting and warming |
03/21/1995 | US5400241 High frequency discharge lamp |
03/21/1995 | US5400009 Synchronization circuit for visual/audio alarms |
03/21/1995 | US5400008 Location marker |
03/21/1995 | US5399944 Ballast circuit for driving gas discharge |
03/21/1995 | US5399943 Power supply circuit for a discharge lamp |
03/15/1995 | CN2192122Y Automatic protector for transformer of neon lamp |
03/15/1995 | CN2192121Y Full electronic fast starter |
03/14/1995 | US5397966 Radio frequency interference reduction arrangements for electrodeless discharge lamps |
03/14/1995 | US5397965 Device for operating a gas discharge lamp |
03/09/1995 | WO1995006951A1 Gas discharge lamp and power distribution system therefor |
03/09/1995 | CA2169752A1 Gas discharge lamp and powder distribution system therefor |
03/08/1995 | EP0642296A2 Process for detecting a faulty fluorescent lamp operated by high-frequency |
03/08/1995 | EP0642295A1 Electronic ballast for a load, for example a discarge lamp |
03/08/1995 | EP0641511A1 Lighting arrangement with variable luminous intensity and colour |
03/08/1995 | EP0641510A1 Electrodeless discharge lamp including impedance matching and filter network |
03/08/1995 | EP0641465A1 Zero-voltage complementary switching high efficiency class d amplifier |
03/08/1995 | EP0599887B1 Device for operating a gas-discharge lamp |
03/08/1995 | EP0410966B1 Solid state electronic ballast |
03/08/1995 | CN2191513Y Electronic starter with special protector for fluorescent lamp |
03/07/1995 | US5396155 Self-dimming electronic ballast |
03/07/1995 | US5396154 Stabilizer circuit having means for adjusting the light of the lamps |
03/07/1995 | US5396153 Protection circuit for electronic ballasts which use charge pump power factor correction |
03/07/1995 | US5396152 Electrical circuit for the pulsed operation of high-pressure gas-discharge lamps |
03/07/1995 | CA1334681C Circuit arrangement for the operation of high-pressure gas discharge lamps by means of a pulsatory supply current |
03/07/1995 | CA1334680C Switching arrangement |
03/02/1995 | DE4421253A1 Electronic stabiliser |
03/02/1995 | DE4329228A1 Method and circuit arrangement for electronically igniting fluorescent lamps |