| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 03/24/2004 | CN1143608C 镇流器电路 Ballast circuit |
| 03/24/2004 | CN1143607C Detection circuit for detecting arc instabilities of high intensity discharge lamp |
| 03/24/2004 | CN1143606C Ballast circuit |
| 03/24/2004 | CN1143605C Circuit apparatus |
| 03/24/2004 | CN1143604C Circuit arrangement |
| 03/23/2004 | US6710993 Method and apparatus for providing overload protection for a circuit |
| 03/23/2004 | US6710556 Discharge lamp lighting apparatus |
| 03/23/2004 | US6710555 Discharge lamp lighting circuit with protection circuit |
| 03/23/2004 | US6710554 Dimmer arrangement for gas discharge lamp with inductive ballast |
| 03/23/2004 | US6710552 Circuit arrangement for operating discharge lamps |
| 03/23/2004 | US6710551 High-intensity discharge lamp lighting apparatus and luminaire for using the same |
| 03/23/2004 | US6710474 Circuit arrangement for switching on a partial circuit arrangement |
| 03/23/2004 | CA2100452C Circuit containing symmetrically-driven coil for energizing electrodeless lamp |
| 03/18/2004 | WO2004023851A1 Device and method for determining the current flowing through a gas discharge lamp |
| 03/18/2004 | WO2004023844A2 Electronic ballast for a gas discharge lamp |
| 03/18/2004 | WO2004023702A2 System and method for optical data communication |
| 03/18/2004 | WO2004023034A1 Condition responsive lighting fixture for construction junction box |
| 03/18/2004 | US20040051692 Liquid crystal display device having an improved lighting device |
| 03/18/2004 | US20040051484 Inverter apparatus and liquid crystal display including inverter apparatus |
| 03/18/2004 | US20040051483 Rare gas discharge lamp lighting apparatus |
| 03/18/2004 | US20040051481 Method for operating fluorescent lamps and ballast |
| 03/18/2004 | US20040051480 Switching apparatus for operating discharge lamps |
| 03/18/2004 | US20040051479 Supply circuit, in particular for a discharge lamp |
| 03/18/2004 | US20040051478 Electronic ballast and lighting fixture |
| 03/18/2004 | US20040051477 Control device of gas-discharge light source |
| 03/18/2004 | US20040051476 Discharge lamp lighting circuit with protection circuit |
| 03/18/2004 | US20040051475 Instant start of series lamp combination |
| 03/18/2004 | US20040051473 Fluorescent lamp driver circuit |
| 03/18/2004 | US20040051472 Electronic ballast having valley frequency modulation for a gas discharge lamp |
| 03/18/2004 | US20040051466 Lighting apparatus capable of providing auxiliary and emergency illumination |
| 03/18/2004 | US20040051163 Strobe light control circuit and IGBT device |
| 03/18/2004 | DE10242326A1 Electronic ballast with power factor compensation/correction (PFC) for discharge lamps and method for reducing harmonics during operation of such ballast, with specified capacitor (dis)charging |
| 03/18/2004 | DE10241327A1 Schaltungsanordnung zum Betrieb von Entladungslampen Circuit arrangement for operating discharge lamps |
| 03/18/2004 | DE10241304A1 Betriebsschaltung mit verbesserter Leistungsversorgung einer Treiberschaltung Operating circuit with improved power supply of a driver circuit |
| 03/18/2004 | DE10239370A1 Controller for fluorescent lamp tubes, has control circuit which detecting lamp currents at two inputs in and which operates in two modes, day and night |
| 03/17/2004 | EP1399004A1 Discharge lamp lighting apparatus and manufacturing method therefor |
| 03/17/2004 | EP1397944A1 Power control device, apparatus and method of controlling the power supplied to a discharge lamp |
| 03/17/2004 | EP1397943A1 Electronic ballast |
| 03/17/2004 | EP1397942A1 High efficiency high power factor electronic ballast |
| 03/17/2004 | EP1397941A1 Automatic cycling control for hid lamps |
| 03/17/2004 | EP1155492B1 Converter with resonant circuit elements |
| 03/17/2004 | EP1072171B1 Circuit arrangement |
| 03/17/2004 | EP0880796B1 Lampholder and lighting unit comprising a lampholder |
| 03/17/2004 | CN2606905Y Back light plate lamp tube connection structure of improved liquid crystal display screen |
| 03/17/2004 | CN1483301A Ballast circuit for operating a discharge lamp |
| 03/17/2004 | CN1482842A Electronic ballast for fluorescent lamp with electronic protector |
| 03/16/2004 | US6707658 Surge protection and reset circuit |
| 03/16/2004 | US6707264 Sequential burst mode activation circuit |
| 03/16/2004 | US6707263 High-intensity discharge lamp ballast with live relamping feature |
| 03/16/2004 | US6707262 Discharge lamp operating circuit having a circuit for detecting the proximity to capacitive operation |
| 03/16/2004 | US6707261 Discharge lamp lighting circuit |
| 03/16/2004 | US6707260 Circuit arrangement including DC-AC converter having a dependable start circuit |
| 03/11/2004 | US20040046513 Modified electronic ballast for a fluorescent lamp |
| 03/11/2004 | US20040046512 Discharge lamp lighting device to light a plurality of discharge lamps |
| 03/11/2004 | US20040046511 Controller and method for creating added functionality from a fluorescent lamp and light fixture |
| 03/11/2004 | DE10240807A1 Verfahren zum Betreiben von Leuchtstofflampen und Vorschaltgerät A method for operating fluorescent lamps and ballast |
| 03/11/2004 | DE10238272A1 Discharge lamp driving apparatus for liquid crystal displays, has DC-to-AC inverter to provide lamp current whose relationship with duty cycle of dimming control signal determines operating state of switch employed in regulator |
| 03/11/2004 | CA2402688A1 Rf wireless remote-control brightness-adjustable energy-saving lamp |
| 03/10/2004 | EP1397029A2 Circuit for operating a discharge lamp |
| 03/10/2004 | EP1397028A1 Ballast for a plurality of discharge lamps |
| 03/10/2004 | EP1396937A2 Circuit for operating a driving circuit with improved power supply |
| 03/10/2004 | EP1086609B1 Starter for a gas discharge lamp, especially a high pressure gas discharge lamp for automobile headlights |
| 03/10/2004 | CN1481206A Circuit device of operation light and its method |
| 03/10/2004 | CN1480980A 直流荧光灯 DC Fluorescent |
| 03/09/2004 | US6703798 Discharge lamp lighting device |
| 03/09/2004 | US6703797 Method for activating illuminator and illumination device |
| 03/09/2004 | US6703796 Power supply and inverter used therefor |
| 03/09/2004 | US6703795 Auxiliary controller |
| 03/09/2004 | US6703794 Power factor correction device including electronic ballast function |
| 03/09/2004 | US6702933 Plastic border for cathodes |
| 03/09/2004 | US6702452 Apparatus and method for operating a portable xenon arc searchlight |
| 03/06/2004 | WO2004047280A1 Dc/ac converter and its controller ic |
| 03/04/2004 | WO2004019661A1 Electronic circuit for supplying a high-pressure discharge arc lamp |
| 03/04/2004 | WO2004019660A1 Radio frequency driven ultra-violet lamp |
| 03/04/2004 | WO2004019369A1 A new fluorescent lamp |
| 03/04/2004 | WO2004019312A2 Apparatus for supplying power, backlight assembly and liquid crystal display apparatus having the same |
| 03/04/2004 | WO2003102994A3 Electronic dimming ballast for compact fluorescent lamps |
| 03/04/2004 | US20040044709 System and method for optical data communication |
| 03/04/2004 | US20040042774 Flash control device, electronic flash device, and photographing system |
| 03/04/2004 | US20040042211 Apparatus and method for operating a portable xenon arc searchlight |
| 03/04/2004 | US20040041782 Liquid crystal display device |
| 03/04/2004 | US20040041621 Operating circuit with an improved power supply for a driver circuit |
| 03/04/2004 | US20040041524 Fluorescent lamp circuit |
| 03/04/2004 | DE10238373A1 Elektronische Schaltung zum Speisen einer Hochdrucklichtbogenlampe An electronic circuit for supplying a high-pressure arc lamp |
| 03/04/2004 | CA2438725A1 Operating circuit with an improved power supply for a driver circuit |
| 03/04/2004 | CA2438719A1 Circuit arrangement for operating discharge lamps |
| 03/03/2004 | EP1395096A2 Method to control fluorescent lamps |
| 03/03/2004 | EP1395095A1 Discharge lamp lighting circuit with protection circuit |
| 03/03/2004 | EP1395094A1 Apparatus and method for operating a lamp |
| 03/03/2004 | EP1395092A2 Light-source lamp unit, light-source device and projection-type display apparatus |
| 03/03/2004 | EP1393600A1 Electronic ballast |
| 03/03/2004 | EP0948878B1 Parallel-storage series-drive electronic ballast |
| 03/03/2004 | CN2605717Y Electronic stabilizer for fluorescent lamp tube capable of selecting lighting multiple different capacity tubes |
| 03/03/2004 | CN2604877Y 110V electronic ballast specially for mosquito eradication lamp |
| 03/03/2004 | CN1479889A Ballast control with power factor correction |
| 03/03/2004 | CN1479563A Discharging fluorescent tube circuit capable of controlling starating time and possessing overvoltage protection |
| 03/03/2004 | CN1478726A Local used type water treatment system for treatment of water |
| 03/02/2004 | US6700335 Method and circuit for regulating power in a high pressure discharge lamp |
| 03/02/2004 | US6700334 RF wireless remote-control brightness-adjustable energy-saving lamp |
| 03/02/2004 | US6700332 Electrodeless discharge lamp system |