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