| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 01/21/2003 | US6509724 Housekeeping power supply for electronically controlled loads |
| 01/21/2003 | US6509700 Apparatus and method for driving a cathode discharge tube |
| 01/21/2003 | US6509699 Digital controlled electronic ballast with piezoelectric transformer |
| 01/21/2003 | US6509698 Operating apparatus of discharge lamp |
| 01/21/2003 | US6509696 Method and system for driving a capacitively coupled fluorescent lamp |
| 01/21/2003 | US6509695 Flash apparatus and camera having the flash apparatus |
| 01/21/2003 | US6509675 Aperture lamp |
| 01/21/2003 | US6509671 Driving method and driving circuit for piezoelectric transformer, cold cathode tube emission device, liquid crystal panel and liquid crystal panel built-in apparatus |
| 01/16/2003 | WO2003005779A1 Programmable pwm module for controlling a ballast |
| 01/16/2003 | WO2003005778A1 Controlling apparatus |
| 01/16/2003 | WO2002074018A3 El driver for small semiconductor die |
| 01/16/2003 | WO2002030828A3 Water treatment assembly |
| 01/16/2003 | US20030011328 Circuit arrangement for operating a fluorescent lamp |
| 01/16/2003 | US20030011327 Ballast socket for compact fluorescent lamp |
| 01/16/2003 | US20030011326 Fluorescent lamp brightness controller |
| 01/16/2003 | US20030011323 Electrodeless bulb having surface adapted to enhance cooling |
| 01/16/2003 | US20030011322 High light output electrodeless fluorescent closed-loop lamp |
| 01/16/2003 | US20030011321 Dielectric barrier discharge lamp having a starting aid |
| 01/16/2003 | US20030011320 Light source device |
| 01/16/2003 | US20030011319 Electronic ballast and electronic transformer |
| 01/16/2003 | US20030011311 Ballast socket for compact fluorescent lamp |
| 01/15/2003 | EP1276355A2 Circuit arrangement to determine the pre-heating power |
| 01/15/2003 | EP1276354A1 Ballast with random switch-on times |
| 01/15/2003 | EP1276137A2 Dielectric-barrier discharge lamp with starting aid |
| 01/15/2003 | EP1276136A1 Phase controlled multi-electrode type ac discharge light source |
| 01/15/2003 | EP1275276A1 Energy converter comprising a control circuit |
| 01/15/2003 | EP0974246B1 Method and circuit for operating an electrical light |
| 01/15/2003 | CN1391426A Electronic ballast for high-voltage Na lamp |
| 01/15/2003 | CN1391334A Differential mode and common mode integrated filter |
| 01/14/2003 | US6507158 Protocol enhancement for lighting control networks and communications interface for same |
| 01/14/2003 | US6507157 Electronic ballast system with dual power and dimming capability |
| 01/14/2003 | US6505948 Method of modifying the spectral distribution of high-intensity ultraviolet lamps |
| 01/10/2003 | CA2392978A1 Circuit arrangement for operating a fluorescent lamp |
| 01/10/2003 | CA2392974A1 Dielectric barrier discharge lamp having a starting aid |
| 01/09/2003 | WO2003003555A1 Cold-cathode driver and liquid crystal display |
| 01/09/2003 | WO2003003409A1 Electrodeless bulb having surface adapted to enhance cooling |
| 01/09/2003 | US20030006720 Fault management method for electronic ballast |
| 01/09/2003 | US20030006719 Metal halide lightbulb strobe system |
| 01/09/2003 | US20030006718 Integral lamp |
| 01/09/2003 | US20030006709 Emergency lighting arrangement and apparatus |
| 01/09/2003 | DE20215073U1 Therapy lamp, e.g. for depression, has high frequency smoothed supply from low voltage direct current |
| 01/08/2003 | EP1274286A1 Emergency lighting apparatus |
| 01/08/2003 | EP1274118A2 Mercury-free metal halide discharge lamp, lighting device for such a lamp, and illuminating apparatus using such a lamp |
| 01/08/2003 | EP1273211A1 Method and circuit arrangement for producing an ignition voltage for fluorescent lamps |
| 01/08/2003 | EP1273210A1 High power factor electronic ballast |
| 01/08/2003 | EP1273085A1 Emergency lighting system |
| 01/08/2003 | EP1020100B1 Supply circuit for a fluorescent tube installation |
| 01/08/2003 | CN2530420Y Digitized neon switch controller |
| 01/08/2003 | CN2530419Y 气体放电灯 Discharge |
| 01/08/2003 | CN1390084A Back-lighting driving and controlling device for hand-held electronic products |
| 01/08/2003 | CN1390083A Electronic striation-elimination in linear type lamp |
| 01/08/2003 | CN1389897A Liquid-crystal displaying screen with improved back lighting system |
| 01/08/2003 | CN1098616C Circuit arrangement |
| 01/08/2003 | CN1098615C Circuit arrangement |
| 01/07/2003 | US6504691 Safety enhanced transformer circuit |
| 01/07/2003 | US6504323 High pressure discharge lamp driving apparatus, luminaire and high pressure discharge lamp driving method |
| 01/07/2003 | US6504322 Discharge lamp operating apparatus |
| 01/07/2003 | US6504321 Universal hardware/software feedback control for high-frequency signals |
| 01/07/2003 | US6504318 Supply coupling of a fluorescent lamp |
| 01/07/2003 | US6504316 Discharge lamp lighting circuit |
| 01/07/2003 | US6504315 Lamp system with electronic ballast |
| 01/07/2003 | US6504314 Discharge lamp DC ballast employing only passive components |
| 01/07/2003 | US6504313 Ignition scheme for electronic HID ballast |
| 01/07/2003 | US6504305 Fluorescent lamp |
| 01/07/2003 | CA2134600C Apparatus for monitoring lamp system status |
| 01/03/2003 | WO2003001856A1 Ballast device for fluorescent tubes comprising an integrated cooling point |
| 01/03/2003 | WO2003001855A1 Electronic ballast |
| 01/03/2003 | WO2003001550A2 External electrode fluorescent lamp, back light unit using the external electrode fluorescent lamp, lcd back light equipment using the back light unit and driving device thereof |
| 01/03/2003 | CA2451590A1 Ballast device for fluorescent tubes comprising an integrated cooling point |
| 01/03/2003 | CA2451440A1 Electronic ballast |
| 01/02/2003 | US20030002300 Dc-dc converter with reduced input current ripples |
| 01/02/2003 | US20030001524 Multi-lamp driving system |
| 01/02/2003 | US20030001522 Electronic ballast |
| 01/02/2003 | US20030001521 Programmable PWM module for controlling a ballast |
| 01/02/2003 | US20030001520 Ultraviolet fluorescent lamp with unique drive circuit |
| 01/02/2003 | US20030001518 Pulse-width modulation for operating high pressure lamps |
| 01/02/2003 | US20030001517 Converter for converting an AC power main voltage to a voltage suitable for driving a lamp |
| 01/02/2003 | US20030001516 Electronic ballast |
| 01/02/2003 | US20030001515 Light source device |
| 01/02/2003 | US20030001514 Piezoelectric transformer with multiple outputs |
| 01/02/2003 | US20030001508 Method and device for managing the supply to a discharge lamp |
| 01/02/2003 | US20030001461 Rosen type piezoelectric transformer with multiple output electrodes, and stabilizer for multiple light source using that |
| 01/02/2003 | EP1272012A1 Light source device |
| 01/02/2003 | EP1272011A1 Pulse transformer with parallel primary windings |
| 01/02/2003 | EP1271612A2 High pressure discharge lamp |
| 01/02/2003 | EP1269801A1 Method and ballast for dimming a light fitted with a fluorescent lamp (l) |
| 01/02/2003 | EP1269800A1 Apparatus and method for driving a high intensity discharge lamp |
| 01/02/2003 | EP1268173A2 Apparatus and system for the production of plastic lenses |
| 01/01/2003 | CN2529489Y High-frequency pulse light generator |
| 01/01/2003 | CN2529488Y 荧光灯镇流器 Fluorescent Lamp Ballasts |
| 01/01/2003 | CN2529487Y Fluorescent lamp electronic ballast |
| 01/01/2003 | CN2529486Y AC electronic ballast |
| 01/01/2003 | CN2529485Y Electronic ballast of high-intensity gas discharge lamp |
| 01/01/2003 | CN2529427Y Induction fluorescent lamp emergency power-supply box capable of inserted by user |
| 01/01/2003 | CN1389088A 电路设备 Circuit Equipment |
| 01/01/2003 | CN1389087A Switching device |
| 01/01/2003 | CN1388736A Electronic fluorescent lamp starter |
| 01/01/2003 | CN1388735A Myopia-preventing lighting method |
| 01/01/2003 | CN1388562A Multiple-electrode low-mercury vapor pressure discharg fluorescent lamp |
| 12/31/2002 | US6501235 Microcontrolled ballast compatible with different types of gas discharge lamps and associated methods |