| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 03/21/2002 | WO2002023958A2 Electronic ballast employing a startup transient voltage suppression circuit |
| 03/21/2002 | WO2002023561A1 Electromagnetic device and high-voltage generating device and method of producing electromagnetic device |
| 03/21/2002 | WO2001093379A8 Switching power supply for discharge lamp and method for powering a lamp |
| 03/21/2002 | WO2001067826A3 Insulating cover for dual connector |
| 03/21/2002 | US20020033679 Dimmable electronic ballast |
| 03/21/2002 | US20020033678 Self-ballasted fluorescent lamp |
| 03/20/2002 | EP1189490A1 Electronic ballast for fluorescent lamp |
| 03/20/2002 | EP1189489A1 Control circuit with configuration intput |
| 03/20/2002 | EP1189488A1 Electronic ballast |
| 03/20/2002 | EP1189487A2 Electronic circuit for detecting filament wear of gas discharge lamps |
| 03/20/2002 | EP1189486A1 Electronic Ballast |
| 03/20/2002 | EP1189485A1 Electronic ballast with DC-link voltage regulation |
| 03/20/2002 | EP1189484A1 Method and apparatus for fast heating cold cathode fluorescent lamps |
| 03/20/2002 | EP1161713A4 Sequential, clamped, single-ended ignition of series operation arc lamps |
| 03/20/2002 | EP0922376B1 Electronic ballast for gas discharge lamps |
| 03/20/2002 | CN2482777Y High-voltage sodium lamp electronic ballast |
| 03/20/2002 | CN2482776Y High-voltage metal halide lamp electronic ballast |
| 03/20/2002 | CN1341342A 镇流器 Ballast |
| 03/20/2002 | CN1341341A Ballast scheme for operating multiple lamps |
| 03/20/2002 | CN1340989A Flash producing circuit |
| 03/19/2002 | US6359761 Secondary ground fault protection |
| 03/19/2002 | US6359396 Multiple-parameter control of lamp ignition |
| 03/19/2002 | US6359395 Control circuit for power factor corrected electronic ballasts and power supplies |
| 03/19/2002 | US6359394 Scheme for sampling lamp conditions during ignition and steady state modes of lamp operation |
| 03/19/2002 | US6359393 Dimmer for a gas discharge lamp employing frequency shifting |
| 03/19/2002 | US6359391 System and method for overvoltage protection during pulse width modulation dimming of an LCD backlight inverter |
| 03/19/2002 | US6359387 Gas-discharge lamp type recognition based on built-in lamp electrical properties |
| 03/18/2002 | CA2357379A1 Electronic circuits for detecting filament breakage in gas discharge lamps |
| 03/14/2002 | WO2002021885A2 System for overvoltage protection during pulse width modulation dimming of an lcd backlight inverter |
| 03/14/2002 | WO2002021884A2 Ballast circuit for operating a discharge lamp |
| 03/14/2002 | US20020031002 Method and apparatus for controlling minimum brightness of a fluorescent lamp |
| 03/14/2002 | US20020030567 Trigger coil |
| 03/14/2002 | US20020030493 Single sensor control of power converters |
| 03/14/2002 | US20020030456 Lamp system with electronic ballast |
| 03/14/2002 | US20020030452 Light bulb type fluorescent lamp lighting apparatus |
| 03/14/2002 | US20020030451 Ballast circuit having voltage clamping circuit |
| 03/13/2002 | EP1187513A2 Method and apparatus for controlling the current through a light source in particular in LC-Display backlighting |
| 03/13/2002 | EP1187177A2 Bulb-shaped fluorescent lamp |
| 03/13/2002 | EP1186210A1 Switched dimming ballast |
| 03/13/2002 | EP1186000A1 Discharge lamp and electronic flash device using the same |
| 03/13/2002 | EP0746867B1 Gas discharge lamp and power distribution system therefor |
| 03/13/2002 | CN2482312Y Low electromagnetic radiation and low cost energy-saving fluorescent lamp |
| 03/13/2002 | CN2482311Y Multifunctional table lamp |
| 03/13/2002 | CN2482310Y High performance electronic ballast |
| 03/13/2002 | CN1340287A Circuit arrangement |
| 03/13/2002 | CN1340286A Balanced power supply circuit for multiple cold-cathode fluorescent lamps |
| 03/13/2002 | CN1340285A 数字电灯镇流器 Digital lamp ballasts |
| 03/12/2002 | US6356040 Arrangement for determining the state of a high-pressure gas discharge lamp on switching-on |
| 03/12/2002 | US6356039 Modular electronic supply device for discharge lamp |
| 03/12/2002 | US6356035 Deep PWM dimmable voltage-fed resonant push-pull inverter circuit for LCD backlighting with a coupled inductor |
| 03/12/2002 | US6356034 Low voltage discharge lamp power supply |
| 03/12/2002 | US6356033 Light source using dielectric barrier discharge lamp, and power supply |
| 03/12/2002 | US6356027 0-10V dimming interface protection circuit |
| 03/12/2002 | US6356024 Lighting device for normal and emergent use |
| 03/07/2002 | WO2002019779A1 Circuit device |
| 03/07/2002 | WO2002019778A2 Gas-discharge lamp type recognition based on built-in lamp electrical properties |
| 03/07/2002 | WO2002019769A2 Circuit device |
| 03/07/2002 | DE10041201A1 Multiple aspect signal column with flashing segment has current and voltage detectors for monitoring flash capacitor |
| 03/06/2002 | EP1185149A1 Discharge lamp operating device |
| 03/06/2002 | EP1183915A1 Cold-cathode lamp, in particular, a table or display window lamp |
| 03/06/2002 | CN2481112Y Remote control light-adjustable electronic ballast |
| 03/06/2002 | CN1339242A 感应灯系统和感应灯 Induction lamp system and sensor lights |
| 03/06/2002 | CN1339241A Administration device for lighting fixtures |
| 03/06/2002 | CN1338888A Initiating device of discharge lamp and lighting device |
| 03/06/2002 | CN1338813A High voltage power supply with light emitting discharge tube for protection circuit and fault protecting circuits |
| 03/06/2002 | CN1080531C 放电灯照明装置 Discharge lamp lighting device |
| 03/05/2002 | US6353295 Lamp electronic ballast with a piezoelectric cooling fan |
| 03/05/2002 | US6353294 Operational method and electronic ballast for a discharge lamp comprising dielectrically impeded discharges |
| 03/05/2002 | US6353289 Metal halide discharge lamp, lighting device for metal halide discharge lamp, and illuminating apparatus using metal halide discharge lamp |
| 03/05/2002 | US6353278 Piezoelectric transformer having increased voltage output |
| 03/05/2002 | US6352356 Illuminating device for a display |
| 02/28/2002 | WO2002017335A1 Transformer for ignitor |
| 02/28/2002 | WO2002016825A1 Socket and transformer for lamp, and method of manufacturing transformer for lamp |
| 02/28/2002 | WO2001093644A3 Gas-discharge lamp including a fault protection circuit |
| 02/28/2002 | WO2001074122A8 Semi-light fitting for changing over from inductive lamps to electronic t5-luminous substance lamps |
| 02/28/2002 | US20020024269 Method of driving a piezoelectric transformer and power source apparatus using the same |
| 02/28/2002 | DE10039236A1 Electric circuit, especially for driving cold cathode tubes in integrated systems e.g. for displays and instruments in motor vehicle, has step-down device switch driven depending on tube drive signals generated from supply voltage |
| 02/28/2002 | DE10036054A1 Schaltung für eine fotografischen Blitz Circuit for a photographic flash |
| 02/27/2002 | EP1181845A1 An electronic ballast circuit |
| 02/27/2002 | EP1181844A1 Method and ballast for feeding a uv light low pressure radiator |
| 02/27/2002 | EP1066739B1 Method and device for detecting the rectification effect occurring in a gas-discharge lamp |
| 02/27/2002 | EP0688492B1 Protection circuit for electronic ballasts which use charge pump power factor correction |
| 02/27/2002 | CN2479708Y Switch-type stabilized electronic ballast |
| 02/27/2002 | CN1337734A High-voltage discharger lamp, producing method, ignition method and ignition device therefor |
| 02/27/2002 | CN1337587A Drive method and circuit for piezo-transformer, cold-cathode tube luminator and liquid-crystal panel |
| 02/27/2002 | CN1080081C Inverter device |
| 02/26/2002 | US6351087 Microwave electrodeless discharge lamp apparatus |
| 02/26/2002 | US6351082 Electronic ballast for a fluorescent lamp |
| 02/26/2002 | US6351081 Electronic ballast for high intensity discharge lamp |
| 02/26/2002 | US6351080 Circuitry for dimming a fluorescent lamp |
| 02/26/2002 | US6351074 Discharge lamp device for vehicle |
| 02/21/2002 | WO2002015648A1 Switching device |
| 02/21/2002 | WO2002015647A1 Device for lighting discharge lamp |
| 02/21/2002 | WO2002015646A2 Integral lamp |
| 02/21/2002 | WO2002015228A1 Short arc xenon lamp device |
| 02/21/2002 | US20020021564 Backlight including external electrode fluorescent lamp and method for driving the same |
| 02/21/2002 | US20020021097 Lighting circuit for an electric discharge lamp |
| 02/20/2002 | CN2478311Y Brightness regulatable non-stroboflash fluorescent lamp |
| 02/20/2002 | CN2478310Y Brightness regulatable non-stroboflash fluorescent lamp |
| 02/20/2002 | CN2478309Y Overcurrent protective safety device of high frequency electronic ballast |