| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 02/22/2005 | US6858997 Circuit synchronization apparatus and method |
| 02/22/2005 | US6858995 Energy-saving dimming apparatus |
| 02/22/2005 | US6858987 Flash lamp unit and flash radiation device |
| 02/22/2005 | CA2268447C Method and device for producing series of impulse voltages to operate discharge lamps and circuit pertaining thereto |
| 02/22/2005 | CA2235355C Supply circuit for discharge lamps with overvoltage protection |
| 02/22/2005 | CA2151305C Isolated constant wattage lamp ballast |
| 02/17/2005 | WO2005015961A1 System and method for reducing flicker of compact gas discharge lamps at low lamp light output level |
| 02/17/2005 | WO2005015705A2 Anti-cycling control system for luminaires |
| 02/17/2005 | US20050035729 Digital power controller for gas discharge devices and the like |
| 02/17/2005 | US20050035727 Discharge lamp illumination circuit |
| 02/17/2005 | US20050035726 Discharge lamp illumination circuit and discharge lamp illumination method |
| 02/17/2005 | US20050035725 Discharge lamp illumination circuit |
| 02/17/2005 | US20050035724 Electronic circuit, and method of operating a high-pressure lamp |
| 02/17/2005 | US20050035723 Discharge lamp lighting circuit |
| 02/17/2005 | US20050035722 Electronic ballast for a lamp to be operated with iterative voltage pulses |
| 02/17/2005 | US20050035721 Electrodeless lighting apparatus using microwave and method for controlling power thereof |
| 02/17/2005 | US20050035720 Anti-cycling control system for luminaires |
| 02/17/2005 | US20050035719 Electronic ballast for a lamp to be operated using iterative voltage pulses |
| 02/17/2005 | DE10354828A1 Inverter für eine Stromversorgung einer Lampenschaltung Inverter for supplying power to a lamp circuit |
| 02/17/2005 | DE10333820A1 Schaltungsanordnung zum Betreiben mindestens einer Hochdruckentladungslampe Circuit arrangement for operating at least one high-pressure discharge lamp |
| 02/17/2005 | DE102004031745A1 Entladungsleuchten-Ansteuerschaltung Discharge lamps driving circuit |
| 02/17/2005 | DE102004014160A1 Projektor mit Verbrauchsartikelkomponente, die eine Speichervorrichtung aufweist Projector with consumable component, comprising a memory device |
| 02/17/2005 | CA2554377A1 Anti-cycling control system for luminaires |
| 02/17/2005 | CA2534052A1 System and method for reducing flicker of compact gas discharge lamps at low lamp light output level |
| 02/16/2005 | EP1507447A2 Power supply system for liquid crystal monitors |
| 02/16/2005 | EP1507446A1 Electronic ballast for operating a lamp with iterative voltage pulses |
| 02/16/2005 | EP1507445A1 Electronic ballast for operating a lamp with iterative voltage pulses |
| 02/16/2005 | EP1507327A1 Emergency lighting unit with integrated electronic ballast |
| 02/16/2005 | EP1507283A2 Electrodeless lighting apparatus using microwave and method for controlling power thereof |
| 02/16/2005 | EP1506698A2 Backlight assembly having external electrode fluorescent lamp, method of driving thereof and liquid crystal display having the same |
| 02/16/2005 | EP1506697A1 Method and circuit arrangement for operating a high-pressure gas discharge lamp |
| 02/16/2005 | EP1506613A1 Circuit arrangement for a resonant converter and method of operating said converter |
| 02/16/2005 | EP1352547B1 Gas discharge lamp base comprising an ignition device |
| 02/16/2005 | CN2679967Y Light modulation circuit of electromagnetic induction lamp |
| 02/16/2005 | CN2679966Y Abnormal state protector for electronic ballast |
| 02/16/2005 | CN2679965Y Microwave plasma light source |
| 02/16/2005 | CN2679964Y Energy saving lamp having device for eliminating electromagnetic radiation |
| 02/16/2005 | CN2679963Y Filament protecting circuit of fluorescent lamp |
| 02/16/2005 | CN2679719Y Replace indicator for projecting light source element |
| 02/16/2005 | CN1582605A Ballast circuit arrangement for operating a discharge lamp with end of lamp life detection |
| 02/16/2005 | CN1582604A Electronic ballast for high-intensity discharge lamps |
| 02/16/2005 | CN1582083A Electronic hallast for gas discharge lamp |
| 02/16/2005 | CN1582082A Electronic ballast for a lamp to be operated with iterative voltage pulses |
| 02/16/2005 | CN1582081A Electronic ballast for a lamp to be operated using iterative voltage pulses |
| 02/16/2005 | CN1581664A Driving circuit and method for three-phase current thansformer |
| 02/16/2005 | CN1581420A Electrodeless lighting apparatus using microwave and method for controlling power thereof |
| 02/16/2005 | CN1581378A Transformer and multi-lamp system using same |
| 02/16/2005 | CN1580930A Image capturing device |
| 02/16/2005 | CN1580905A Method and device for driving lamp and back light source combination body with same and liquid crystal display |
| 02/16/2005 | CN1580904A Lamp combination body, back light source combination body and method for driving display device and lamp |
| 02/16/2005 | CN1190110C Output circuit of electronic ballast of fluorescent lamp |
| 02/15/2005 | US6856519 Inverter controller |
| 02/15/2005 | US6856356 Strobe flash photographic illumination |
| 02/15/2005 | US6856227 Transformer for igniter |
| 02/15/2005 | US6856102 Three-stage electronic ballast for metal halide lamps |
| 02/15/2005 | US6856101 Method and apparatus for switching of parallel capacitors in an HID bi-level dimming system using voltage suppression |
| 02/15/2005 | US6856100 Ballast with inverter startup circuit |
| 02/15/2005 | US6856099 Multi-lamp actuating facility |
| 02/15/2005 | US6856098 Converter for converting an AC power main voltage to a voltage suitable for driving a lamp |
| 02/15/2005 | US6856096 Ballast with load-adaptable fault detection circuit |
| 02/15/2005 | CA2232901C Operating circuit for high-pressure discharge lamps with an ignition-time bridging function |
| 02/11/2005 | CA2477370A1 Electronic ballast for a lamp to be operated with iterative voltage pulses |
| 02/11/2005 | CA2477367A1 Electronic ballast for a lamp to be operated using iterative voltage pulses |
| 02/10/2005 | WO2005013647A1 Total harmonic distortion reduction for electronic dimming ballast |
| 02/10/2005 | WO2005013314A1 An electromagnetic inductive lamp having a stereoscopic structural lamp tube |
| 02/10/2005 | US20050030776 High-efficiency adaptive DC/AC converter |
| 02/10/2005 | US20050030750 Method and device for operating a fluorescent tube in an energy saving manner |
| 02/10/2005 | US20050030416 Image capturing device |
| 02/10/2005 | US20050030277 Lamp assembly, back light assembly having the same, display device having the same, and method of driving lamps |
| 02/10/2005 | US20050029967 Multi-lamp actuating facility |
| 02/10/2005 | US20050029966 Electronic ballast system having emergency lighting provisions and electronic chip |
| 02/10/2005 | US20050029964 Discharge lamp lighting circuit |
| 02/10/2005 | US20050029963 Power supply apparatus and method of controlling the same |
| 02/10/2005 | US20050029962 Luminosity adjustable fluorescent lamp device for coordinated use with silicon controlled phase luminosity modulator |
| 02/10/2005 | US20050029955 Anti-cycling control system for luminaires |
| 02/10/2005 | DE202004018621U1 Metal halogen lamp, especially for motor vehicle use, has a temperature detector for protection against high ambient temperatures and a microcontroller regulated starter circuit |
| 02/10/2005 | DE10333740A1 Betriebsverfahren für eine Hochdruckentladungslampe Operating method for a high pressure discharge lamp |
| 02/10/2005 | DE10331435A1 Zündvorrichtung für eine Hochdruckentladungslampe und Beleuchtungssystem Ignition device for a high pressure discharge lamp and lighting system |
| 02/09/2005 | EP1504635A1 Electronic ballast for discharge lamps |
| 02/09/2005 | EP1504316A1 Pvm controller with automatic low battery power reduction circuit and lighting device incorporating the controller |
| 02/09/2005 | EP1129604A4 Ballast circuit for high intensity discharge lamps |
| 02/09/2005 | EP1080610B1 Base of an electric discharge lamp with an ignition device |
| 02/09/2005 | CN2678308Y 一种电子镇流器 An electronic ballast |
| 02/09/2005 | CN1579118A Circuit arrangement |
| 02/09/2005 | CN1579117A Power supply circuit for flash discharge tube |
| 02/09/2005 | CN1579116A The power source for the flash discharge lamp and the control method thereof |
| 02/09/2005 | CN1579115A Electrodeless discharge lamp lighting device, light bulb type electrodeless fluorescent lamp and discharge lamp lighting device |
| 02/09/2005 | CN1579114A Ballasting circuit |
| 02/09/2005 | CN1579113A Ballasting circuit |
| 02/09/2005 | CN1578581A Ccfl circuit with independent adjustment of frequency and duty cycle |
| 02/09/2005 | CN1578580A Cold cathode fluorescent lamp driver circuit |
| 02/09/2005 | CN1578579A Circuit arrangement for operating at least one high-pressuredischarge lamp |
| 02/09/2005 | CN1578578A 放电灯点灯装置 The discharge lamp lighting device |
| 02/09/2005 | CN1578577A Inverter circuit for lighting discharge lamps with reduced power consumption |
| 02/09/2005 | CN1578576A 放电灯点灯电路 The discharge lamp lighting circuit |
| 02/09/2005 | CN1578575A Electric power control device |
| 02/09/2005 | CN1578091A Dc-dc converter and device for operation of a high pressure discharge lamp using said converter |
| 02/09/2005 | CN1578089A Dc-dc converter and device for operation of a high pressure discharge lamp using said converter |
| 02/09/2005 | CN1578087A Dc-dc converter and device for operation of a high pressure discharge lamp using said converter |
| 02/09/2005 | CN1577715A Ignitor for short arc discharge lamp |