| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 02/13/2001 | US6188380 Photodetector of liquid crystal display and luminance control device using the same |
| 02/13/2001 | US6188184 Electronic ballast with reduced operating frequency after lamp ignition |
| 02/13/2001 | US6188183 High intensity discharge lamp ballast |
| 02/13/2001 | US6188182 Power control apparatus for lighting systems |
| 02/13/2001 | US6188180 Ignition circuit for automotive high intensity discharge lamps |
| 02/13/2001 | US6188179 Induction circuits for lighting |
| 02/13/2001 | US6188177 Light sensing dimming control system for gas discharge lamps |
| 02/13/2001 | US6188163 Converter with piezoceramic transformer |
| 02/08/2001 | WO2001010176A1 Modular high frequency ballast architecture |
| 02/08/2001 | WO2001010175A1 Lamp driver unit and lamp |
| 02/08/2001 | WO2001010005A1 A resonant mode power supply having over-power and over-current protection |
| 02/07/2001 | CN2418646Y Energy-saving electronic ballast of high-voltage mercury, sodium lamp |
| 02/06/2001 | US6184662 Pulsed power supply device |
| 02/06/2001 | US6184635 Circuit arrangement for starting and for operating high-pressure lamps |
| 02/06/2001 | US6184634 Circuit arrangement for igniting and operating a lamp having piezoelectric transformer |
| 02/06/2001 | US6184633 Reduction of vertical segregation in a discharge lamp |
| 02/06/2001 | US6184632 Lighting apparatus including circuit to detect an electrical characteristic of a component of a lamp mounted in the apparatus |
| 02/06/2001 | US6184631 Piezoelectric inverter |
| 02/06/2001 | US6184630 Electronic lamp ballast with voltage source power feedback to AC-side |
| 02/06/2001 | US6184622 Inductive-resistive fluorescent apparatus and method |
| 02/01/2001 | WO2001008454A1 Improvements in and relating to electric lights |
| 02/01/2001 | DE19935458A1 Dimming of light emission of display illuminated by fluorescent lamp by heating lamp for stable operation |
| 01/31/2001 | EP1073317A2 Ballast for discharge lamp |
| 01/31/2001 | EP1072171A2 Circuit arrangement |
| 01/31/2001 | CN1282201A Ballast cut-off circuit for gas discharge lamp |
| 01/30/2001 | US6181087 Discharge lamp operating device |
| 01/30/2001 | US6181086 Electronic ballast with embedded network micro-controller |
| 01/30/2001 | US6181085 Electronic ballast with output control feature |
| 01/30/2001 | US6181084 Ballast circuit for high intensity discharge lamps |
| 01/30/2001 | US6181083 Ballast circuit with controlled strike/restart |
| 01/30/2001 | US6181082 Ballast power control circuit |
| 01/30/2001 | US6181081 Ignition device for a discharge lamp and method for igniting a discharge lamp |
| 01/30/2001 | US6181080 Circuit for actuating at lease one electrode-less discharge lamp |
| 01/30/2001 | US6181079 High power electronic ballast with an integrated magnetic component |
| 01/30/2001 | US6181078 Discharge lamp lighting system |
| 01/30/2001 | US6181077 Safe and reliable power supply for xenon arc lamp |
| 01/30/2001 | US6181076 Apparatus and method for operating a high intensity gas discharge lamp ballast |
| 01/30/2001 | US6181075 Power supply circuit for gas discharge tube |
| 01/30/2001 | US6181074 Operating circuit for discharge lamps with switchable operating states |
| 01/30/2001 | US6181073 Piezoelectric illumination control for microscope |
| 01/30/2001 | US6181072 Apparatus and methods for dimming gas discharge lamps using electronic ballast |
| 01/30/2001 | US6181066 Frequency modulated ballast with loosely coupled transformer for parallel gas discharge lamp control |
| 01/30/2001 | CA2029474C Electronic flash apparatus for reducing the incidence of human eyelid closures during exposure |
| 01/27/2001 | CA2278914A1 Low-temperature theatrical lighting system |
| 01/25/2001 | WO2001006817A1 A ballast noise reduction scheme |
| 01/25/2001 | DE19933161A1 Schaltungsanordnung Circuitry |
| 01/24/2001 | EP1071315A2 Ballast shutdown circuit for a gas discharge lamp |
| 01/24/2001 | EP1071210A2 Cicuit arrangement |
| 01/24/2001 | EP1070440A1 Electronic lamp ballast with power factor correction |
| 01/24/2001 | EP1070439A1 Power supply for a difficult to start electrodeless lamp |
| 01/24/2001 | EP1070313A1 Resonant square wave fluorescent tube driver |
| 01/24/2001 | CN2416710Y Independent-excited electronic ballast |
| 01/24/2001 | CN2416709Y 电子镇流器 Electronic Ballast |
| 01/24/2001 | CN1061208C Single transistor ballast for gas discharge lamps |
| 01/23/2001 | US6177769 Electric Ballast with selective power dissipation |
| 01/23/2001 | US6177768 Discharge lamp lighting device and illumination device |
| 01/23/2001 | US6177765 Active diode protection apparatus in metal halide lamps |
| 01/18/2001 | WO2001005193A1 Flyback converter as led driver |
| 01/18/2001 | DE19909530A1 Schaltungsanordnung zum Betrieb mindestens einer Hochdruckentladungslampe und Betriebsverfahren Circuit arrangement for operating at least one high-pressure discharge lamp and method of operation |
| 01/18/2001 | DE10030170A1 Entladungslampenansteuerschaltung Entladungslampenansteuerschaltung |
| 01/18/2001 | DE10028089A1 Lighting device with high power discharge lamp, has ballast apparatus with loading characteristic that has smooth transition from secondary no-load voltage to secondary short-circuit current |
| 01/18/2001 | CA2343062A1 Flyback converter as led driver |
| 01/17/2001 | EP1069589A2 Electrical discharge tube |
| 01/16/2001 | US6175487 Luminaire assembly |
| 01/16/2001 | US6175200 Device for operating a gas discharge lamp with reduced average lamp power |
| 01/16/2001 | US6175199 Magnetically deflected arc lamp |
| 01/16/2001 | US6175198 Electrodeless fluorescent lamp dimming system |
| 01/16/2001 | US6175195 Triac dimmable compact fluorescent lamp with dimming interface |
| 01/16/2001 | US6175190 Discharge-lamp lighting circuit |
| 01/16/2001 | US6175189 Floating reference fault protection circuit for arc discharge lamp ballast |
| 01/11/2001 | WO2001003476A1 Inductive electrodeless lamp providing rotating electric field |
| 01/11/2001 | WO2001003161A2 Lamp, oscillator and lighting apparatus |
| 01/11/2001 | DE19923238A1 Schaltung zur Korrektur des Leistungsfaktors A circuit for correcting the power factor |
| 01/11/2001 | DE10030484A1 Starting circuit for discharge lamp employs cyclic charging and discharging of capacitors to raise starting voltage to desired level |
| 01/10/2001 | EP1067827A2 High voltage discharge lamp apparatus for vehicles |
| 01/10/2001 | EP1067825A2 Device and method for controlled-spectrum lighting |
| 01/10/2001 | EP1066739A1 Method and device for detecting the rectification effect occurring in a gas-discharge lamp |
| 01/10/2001 | CN2414584Y One electronic ballast capable of driving many fluorescent lamps |
| 01/10/2001 | CN2414583Y Electronic ballast for high-pressure sodium lamp |
| 01/10/2001 | CN2414582Y Eletronic ballast for fluorescent lamp |
| 01/10/2001 | CN2414581Y Bulb service life prolonging apparatus |
| 01/10/2001 | CN1279879A Energy saving lighting controller |
| 01/09/2001 | US6172890 Half bridge circuit drive without collector bias current peak |
| 01/09/2001 | US6172469 Device for operating a gas discharge lamp |
| 01/09/2001 | US6172468 Method and apparatus for igniting a gas discharge lamp |
| 01/09/2001 | US6172467 Method and device for producing series of impulse voltages to operate discharge lamps and circuit pertaining thereto |
| 01/09/2001 | US6172466 Phase-controlled dimmable ballast |
| 01/09/2001 | US6172464 Compact screw-in fluorescent lamp |
| 01/04/2001 | WO2000041495A3 Kit for converting lighting units employing fluorescent lamps from inductive operation to electronic operation |
| 01/04/2001 | WO1999036940A3 High frequency inductive lamp and power oscillator |
| 01/04/2001 | DE19924693A1 Electronic mains connecting operating device for cold cathode lamps with series resonance circuit for producing operating voltage of lamp and with oscillator or chopper circuit |
| 01/04/2001 | DE19923083A1 Adapter for low pressure discharge lamps has bridge circuit outputs connected to primary coil winding and to first secondary coil, second output or negative pole to second secondary coil |
| 01/03/2001 | EP1064829A2 Circuit arrangement |
| 01/03/2001 | EP1064828A1 Electronic ballast with a piezoelectric cooling fan |
| 01/03/2001 | CN2413466Y Fluorescent lamp filament-breaking re-lighting display circuit |
| 01/03/2001 | CN1278997A Non-thermionic ballast-free energy-efficient light-producing gas discharge systhm and method |
| 01/03/2001 | CN1060307C Double resonant driver ballast for gas lamps |
| 01/02/2001 | US6169376 Gas discharge tube changeable color display and digital controller system |
| 01/02/2001 | US6169375 Lamp adaptable ballast circuit |
| 01/02/2001 | US6169374 Electronic ballasts with current and voltage feedback paths |