| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 04/13/2004 | US6720738 Method and circuit arrangement for producing an ignition voltage for fluorescent lamps |
| 04/13/2004 | US6720733 Electrodeless lamp system |
| 04/13/2004 | US6720705 Method of driving a piezoelectric transformer and power source apparatus using the same |
| 04/13/2004 | US6719435 Dc-Dc converter with reduced input current ripples |
| 04/13/2004 | CA2297051C Method for operating a direct current metal halogen arc lamp and circuit pertaining thereto |
| 04/13/2004 | CA2224362C Method for operating a lighting system and suitable lighting system therefor |
| 04/08/2004 | WO2004030421A1 Discharge lamp lighting device |
| 04/08/2004 | WO2004030420A1 Electronic ballast for a discharge lamp |
| 04/08/2004 | WO2004030419A1 A starter for fluorescent lamp and a fluorescent lamp using the starter |
| 04/08/2004 | WO2004030418A2 Circuit for driving cold cathode tubes |
| 04/08/2004 | WO2004030372A1 Projection system |
| 04/08/2004 | US20040066153 Electronic ballast with DC output flyback converter |
| 04/08/2004 | US20040066152 Electronic ballast with filament detection |
| 04/08/2004 | US20040066151 Multi-lamp backlight system |
| 04/08/2004 | US20040066150 Gas discharge lamp base comprising an ignition device |
| 04/08/2004 | US20040066149 Method and system of driving a CCFL |
| 04/08/2004 | DE10306755A1 Piezoelectric Xenon gas discharge lamp controller, e.g. for vehicle, has piezo transformer that provides ignition, load voltages for igniting, operating lamp with output directly connected to lamp |
| 04/08/2004 | DE10245895A1 Lichtquelle Light source |
| 04/07/2004 | EP1406476A2 Dimming control system for electronic ballasts |
| 04/07/2004 | EP1406475A2 High pressure discharge lamp lighting apparatus |
| 04/07/2004 | EP1405551A1 Programmable pwm module for controlling a ballast |
| 04/07/2004 | EP1198977B1 Electric load |
| 04/07/2004 | EP1057382B1 High frequency electronic ballast for multiple lamp independent operation |
| 04/07/2004 | CN2610604Y Multifunction adjustable fluorescent lamp source |
| 04/07/2004 | CN2610603Y Ballast for discolour and colour mixing box of fluorescent lamp |
| 04/07/2004 | CN1486935A Changeable lamp assembly for water treatment system |
| 04/07/2004 | CN1486934A Light assembly |
| 04/06/2004 | US6718135 Flash photography system |
| 04/06/2004 | US6717565 Illuminating apparatus for a liquid crystal monitor and a digital camera having a liquid crystal monitor utilizing an illuminating apparatus thereof |
| 04/06/2004 | US6717375 Discharge lamp lighting device and system comprising it |
| 04/06/2004 | US6717374 Microcontroller, switched-mode power supply, ballast for operating at least one electric lamp, and method of operating at least one electric lamp |
| 04/06/2004 | US6717372 Multi-lamp driving system |
| 04/06/2004 | US6717371 Ballast for operating at least one low-pressure discharge lamp |
| 04/06/2004 | US6717370 High speed stop circuit for an electronic ballast |
| 04/06/2004 | US6717367 Emergency lighting arrangement and apparatus |
| 04/06/2004 | US6717341 Bulb-form lamp and its manufacturing method |
| 04/06/2004 | US6716375 Apparatus and method for heating a polymerizable composition |
| 04/06/2004 | CA2121076C Electromagnetic discharge apparatus with dual power amplifiers |
| 04/06/2004 | CA2108433C Twin tube capacitively-driven rf light source |
| 04/06/2004 | CA2104093C Apparatus for coupling energy to electrodeless lamp applicators |
| 04/01/2004 | WO2004028218A1 Electronic ballast with a charge pump for active power factor correction |
| 04/01/2004 | WO2004028206A2 Adaptive cfl control circuit |
| 04/01/2004 | WO2003070836A3 A fluorescent lamp brightness control process by ballast frequency adjustment |
| 04/01/2004 | US20040061455 Ballast with adaptive end-of-lamp-life protection |
| 04/01/2004 | US20040061454 High-intensity discharge lamp ballast with live relamping feature |
| 04/01/2004 | US20040061453 Ballast with lamp-to-earth-ground fault protection circuit |
| 04/01/2004 | US20040061452 Dimming control system for electronic ballasts |
| 04/01/2004 | US20040061069 Fluid treatment system with UV sensor and intelligent driver |
| 04/01/2004 | DE202004001374U1 Vorschaltgerätekasten Ballast |
| 04/01/2004 | DE10244821A1 Projektionssystem Projection system |
| 04/01/2004 | CA2443458A1 Mercury lamp with electronic ballast and use thereof |
| 03/31/2004 | EP1404163A2 High-intensity discharge lamp ballast with live relamping feature |
| 03/31/2004 | EP1404162A2 Ballast with adaptative end-of-lamp-life protection |
| 03/31/2004 | EP1404161A1 Discharge lamp igniter device and projector device |
| 03/31/2004 | EP1402760A1 High efficiency driver apparatus for driving a cold cathode fluorescent lamp |
| 03/31/2004 | EP1402759A1 System for driving a capacitively coupled fluorescent lamp |
| 03/31/2004 | EP1402511A1 Inverter for liquid crystal display, and power supply arrangement comprising such an inverter |
| 03/31/2004 | EP1402311A2 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 |
| 03/31/2004 | EP1402310A1 Apparatus for supplying power and liquid crystal display having the same |
| 03/31/2004 | CN2609318Y Electronic transformer for low voltage lamp |
| 03/31/2004 | CN2609317Y Control circuit for super fluorescent lamp |
| 03/31/2004 | CN1486127A Starter for discharging lamp |
| 03/31/2004 | CN1486126A Half bridge oscillator composed of variable-frequency driven double-polar transistor and actuation method thereof |
| 03/31/2004 | CN1486125A Telecontrol dimmer for energy saving lamp |
| 03/31/2004 | CN1144510C Group controlled light regulating method for electronic ballast fluorescent lamp |
| 03/31/2004 | CN1144350C Piezoelectric transformer inverter |
| 03/31/2004 | CN1144260C Lampholder and lighting unit comprising a lampholder |
| 03/30/2004 | US6714735 Capacitor charging device for a flash |
| 03/30/2004 | US6714111 Inverter transformer |
| 03/30/2004 | US6713973 System and method of automatic cycling control for HID lamps |
| 03/30/2004 | US6713972 Ultra-high pressure discharge lamp lighting method, ultra-high pressure discharge lamp to which the method is applicable and ballast for use therein, and lighting system incorporating the lamp and the ballast |
| 03/30/2004 | US6713946 Liquid crystal picture screen with improved backlighting |
| 03/30/2004 | US6713744 Scanner having cold-cathode-tube light source and method of controlling a drive signal for illuminating a cold-cathode-tube light source |
| 03/30/2004 | CA2437995A1 Method for operating fluorescent lamps and ballast |
| 03/30/2004 | CA2159906C Fluorescent materials for illumination purpose |
| 03/25/2004 | WO2004026006A2 Control system for light tubes |
| 03/25/2004 | WO2004026005A1 Lighting device of electrodeless discharge lamp, bulb type electrodeless fluorescent lamp and lighting device of discharge lamp |
| 03/25/2004 | WO2002067636A8 A digital lamp controller for low frequency operation |
| 03/25/2004 | US20040057716 Flash controlling apparatus utilizing characteristics of a logarithmic function |
| 03/25/2004 | US20040057715 Strobe light emitting apparatus and camera |
| 03/25/2004 | US20040056830 Liquid crystal display and apparatus of driving light source therefor |
| 03/25/2004 | US20040056825 Inverter for liquid crystal display |
| 03/25/2004 | US20040056610 Circuit for driving cold cathode tubes |
| 03/25/2004 | US20040056609 Power supply device and liquid crystal display device using the same |
| 03/25/2004 | US20040056607 Lamp inverter with pre-regulator |
| 03/25/2004 | DE10242332A1 Electronic voltage adapter for gas discharge lamp(s) with charge pump for active power factor correction has element for electrically isolated lamp current coupling to supply energy to pump capacitor |
| 03/25/2004 | DE10036458B4 Staubfangvorrichtung für eine Kreissäge Dust collection device for a circular saw |
| 03/24/2004 | EP1401246A2 Inverter apparatus and liquid crystal display including inverter apparatus |
| 03/24/2004 | EP1401091A1 Cold-cathode driver and liquid crystal display |
| 03/24/2004 | EP1400156A1 Ballast device for fluorescent tubes comprising an integrated cooling point |
| 03/24/2004 | EP1400155A1 Method and apparatus for determining power frequencies that cause arc instabilities in discharge lamps |
| 03/24/2004 | EP1400154A1 Electronic ballast for a high intensity discharge lamp |
| 03/24/2004 | EP1400153A1 Detection of asymmetrical load in an ac-circuit |
| 03/24/2004 | EP1084595B1 Control gear for fluorescent lamps |
| 03/24/2004 | EP0978222B1 Detection circuit for detecting arc instabilities of a high intensity discharge lamp |
| 03/24/2004 | EP0974247B1 Circuit for actuating at least one electrodeless discharge lamp |
| 03/24/2004 | CN2607714Y Electronic ballast fluorescent lamp with power factor correcting circuit |
| 03/24/2004 | CN2607713Y Ballast for high-frequency fast starting single-electrode fluorescent lamp set |
| 03/24/2004 | CN1484479A Method for suppressing unstable high frequency discharge of high-strengty discharge lamp and products thereof |
| 03/24/2004 | CN1143609C Ballast circuit |