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)
05/1998
05/13/1998EP0840992A1 Circuit arrangement
05/13/1998CN1181687A Ignition method and igniting device of high pressure discharge lamp
05/12/1998US5752102 Electronic flashing device
05/12/1998US5752084 Lens-fitted photo film unit and electronic flash device for use therewith
05/12/1998US5751523 Secondary ground fault protected luminous tube transformer for mid-point connected luminous tubes
05/12/1998US5751121 High voltage discharge bulb control
05/12/1998US5751120 DC operated electronic ballast for fluorescent light
05/12/1998US5751118 Universal input dimmer interface
05/12/1998US5751117 Modular fluorescent track lighting
05/12/1998US5751116 Apparatus to retrofit an HID light fixture
05/12/1998US5751115 Lamp controller with lamp status detection and safety circuitry
05/12/1998US5751104 Compact fluorescent lamp having a helical lamp envelope
05/12/1998US5751092 Piezoelectric transformer and power converting apparatus employing the same
05/07/1998WO1998019348A1 Converter with piezoceramic transformer
05/07/1998DE19644993A1 Circuit arrangement for controlling two brightness stages of gas-discharge lamps
05/07/1998DE19644971A1 Constant light arrangement for multiple lighting devices e.g. in work-places and rooms
05/06/1998EP0840537A1 Electronic ballast for high-intensity discharge lamps
05/06/1998EP0839438A1 Ballast
05/06/1998EP0839437A1 Circuit arrangement
05/06/1998EP0839436A1 Method for operating a lighting system and suitable lighting system therefor
05/06/1998EP0733266B1 Process for operating an incoherently emitting radiation source
05/06/1998CN2281054Y 高效电子镇流器 Efficient electronic ballasts
05/06/1998CN2280838Y Junction box for daylight lamp
05/06/1998CN1180988A Ballast IC with shut-down function
05/06/1998CN1180987A Lamp power supply circuit with feedback circuit for dynamically adjusting lamp current
05/06/1998CN1180986A High voltage IC-driven half-bridge gas discharge lamp ballast
05/06/1998CN1180985A Discharge lamp operating apparatus and method
05/05/1998US5748460 Power supply apparatus
05/05/1998US5747947 Gain controlled control signal based on sensed lamp current
05/05/1998US5747946 Gas discharge lamps and systems
05/05/1998US5747944 Flash device having plural emission modes in one of which a flash inductor is selectively short-circuited
05/05/1998US5747943 MOS gate driver integrated circuit for ballast circuits
05/05/1998US5747942 Inverter for an electronic ballast having independent start-up and operational output voltages
05/05/1998US5747941 Electronic ballast that monitors direct current through lamp filaments
05/05/1998US5747937 Two-level security lighting system
05/05/1998US5747841 Circuit arrangement, and junction field effect transistor suitable for use in such a circuit arrangement
05/05/1998CA2118933C Power supply circuit
04/1998
04/30/1998WO1998018298A1 Inverter circuits
04/30/1998WO1998018297A1 High-pressure discharge lamp with an auxiliary ignition electrode as well as circuitry and process for operation
04/30/1998WO1998018296A1 A power control apparatus for lighting systems
04/30/1998DE19736894A1 Integrierte Treiberschaltung Driver IC
04/30/1998DE19644115A1 Schaltungsanordnung zum Betrieb einer Hochdruckentladungslampe sowie Beleuchtungssystem mit einer Hochdruckentladungslampe und einem Betriebsgerät für die Hochdruckentladungslampe Circuit arrangement for operating a high pressure discharge lamp and lighting system comprising a high pressure discharge lamp and an operating device for the high-pressure discharge lamp
04/30/1998CA2200680A1 Electronic ballast for high-intensity discharge lamps
04/29/1998EP0838132A1 Dimmable ballast
04/29/1998EP0838131A1 Ballast circuit
04/29/1998EP0838130A1 Power supply for feeding and igniting a gas discharge lamp
04/29/1998EP0838129A1 Electronic ballast
04/29/1998EP0838128A1 Circuit arrangement
04/29/1998EP0838082A2 Integrated hid reflector lamp
04/29/1998EP0838081A2 High-pressure discharge lamp
04/28/1998US5744916 Discharge tube lighting apparatus
04/28/1998US5744915 Electronic ballast for instant-start lamps
04/28/1998US5744913 Fluorescent lamp apparatus with integral dimming control
04/28/1998US5744912 Electronic ballast having an oscillator shutdown circuit for single or multiple fluorescent tubes for lamps
04/28/1998CA2126172C Luminaire_with interference reduction
04/28/1998CA2112304C Gas discharge image display
04/23/1998WO1998017085A1 A power distribution system
04/23/1998WO1998017084A1 Inductive-resistive fluorescent apparatus and method
04/23/1998WO1998017081A2 Direct current gas discharge lamp starter and direct current gas discharge lamp instant start ballast
04/23/1998DE19642947A1 Gleichstrom-Gasentladungslampenstarter und Gleichstrom-Vorschaltgerät für eine Gasentladungslampe DC gas discharge lamp starter and DC ballast for a gas discharge lamp
04/23/1998CA2266507A1 Inductive-resistive fluorescent apparatus and method
04/22/1998EP0837620A2 Operating method and operating apparatus for a high pressure discharge lamp
04/22/1998EP0836794A1 Inverter
04/22/1998EP0836793A1 Power supply for feeding and igniting a discharge lamp
04/22/1998EP0836792A1 Ballast
04/22/1998CN2279759Y Fluorescent lamp starter
04/22/1998CN1179693A Lamp ballast circuit with cathode preheat function
04/21/1998US5742497 Cold-cathode fluorescent lamp lighting device
04/21/1998US5742134 Inverter driving scheme
04/21/1998US5742132 Method and system for starting and operating a discharge lamp
04/21/1998US5742131 Dimmable ballast control circuit
04/16/1998WO1998015985A1 Piezo-electric transformer
04/16/1998DE19646861C1 Vorrichtung zum Betreiben einer Gasentladungslampe Device for operating a gas discharge lamp
04/15/1998EP0836368A2 Hot relight system for electrodeless high intensity discharge lamps
04/15/1998EP0836113A2 Lens-fitted film unit with electronic flash
04/15/1998EP0835598A1 Single switch ballast with integrated power factor correction
04/15/1998CN2279046Y Electronic light-controlling ballast for fluorescent lamp
04/15/1998CN1179258A Power supply for light sources, particularly for quick ignition of fluorescent lamps and the like
04/15/1998CN1179257A Voltage booster
04/14/1998US5740021 Switching power supply for the operation of electric lamps
04/14/1998US5739679 Cold cathode tube lighting device using piezoelectric transformer
04/14/1998US5739645 For powering a lamp
04/14/1998US5739644 Discharge lamp typically a sodium high-pressure discharge lamp, from an a-c power network
04/14/1998US5739643 Device for supplying electric power to flashlamp and method thereof
04/14/1998US5739640 Low line voltage detection control module and method for a fluorescent lamp
04/14/1998US5739622 Converter wherein a piezoelectric transformer input signal is frequency modulated by a pulse width modulated signal
04/14/1998US5739555 Amplifying-gate thyristor with an increased hold current
04/14/1998US5738780 Voltage converter for water treatment system UV bulb
04/08/1998EP0835044A2 Lamp ballast circuit with cathode preheat function
04/08/1998EP0834241A1 Circuit arrangement
04/08/1998EP0834213A1 Switch mode power supply
04/08/1998EP0834187A1 Electrodeless low-pressure discharge lamp
04/08/1998CN1178623A Circuit arrangement
04/08/1998CN1178444A Gas discharge lamp ballast circuit with complementary converter switches
04/07/1998US5737207 Power supply
04/07/1998US5736819 Parallel-tuned electronic ballast with special output voltage waveform
04/07/1998US5736817 Preheating and starting circuit and method for a fluorescent lamp
04/02/1998WO1998014035A1 Arrangement for determining the state of a high-pressure gas discharge lamp on switching-on
04/01/1998EP0833548A1 Light source lamp unit, light source device, and projection display device
04/01/1998EP0833372A2 Starting flag structure for tubular low pressure discharge lamps
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