| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 03/29/2007 | US20070069661 Lamp driving device |
| 03/29/2007 | US20070069660 Electrodeless lighting system having resonator with different aperture ratio portions |
| 03/29/2007 | US20070069659 High temperature operation type electrodeless bulb of plasma lighting systems and plasma lighting system having the same |
| 03/29/2007 | US20070069658 Basic halogen convertor ic |
| 03/29/2007 | DE10203356B4 Vorschaltgerät für Kaltkathoden-Fluoreszenzlampen Ballast for cold cathode fluorescent lamps |
| 03/29/2007 | DE102005046482A1 Electronic ballast adjusting method for electrical lamp, involves changing settings of parameter of lamp during auxiliary operation of ballast, such that operation is adjusted when ballast recognizes value of resistance and/or dummy load |
| 03/29/2007 | DE102005045645A1 High pressure lamp e.g. metal halide lamp, operating method, involves using constant direct current mode when dimness level is less than specified threshold value, where lamp is operated with low dimness level with constant direct current |
| 03/29/2007 | DE102005045618A1 Emergency power light, has electronic ballast including digital interface and microprocessor provided for recognizing lamp and failure in lamp, and interface attached to digital addressable lighting interface |
| 03/28/2007 | EP1768469A2 Method for operating a high pressure discharge lamp |
| 03/28/2007 | EP1768468A2 High intensity discharge lamp lighting device and illumination apparatus |
| 03/28/2007 | EP1767067A1 Lamp-dimming through bypassing of phase-cutting |
| 03/28/2007 | EP1767066A1 Method and circuit for driving back a light emitter of a display apparatus |
| 03/28/2007 | EP1766753A2 Vehicle interface |
| 03/28/2007 | EP1766464A1 Liquid crystal display and control method thereof |
| 03/28/2007 | EP1470464A4 Extraction of accessory power from a signal supplied to a luminaire from a phase angle dimmer |
| 03/28/2007 | EP1338178B1 A voltage-fed push-pull llc resonant lcd backlighting inverter circuit |
| 03/28/2007 | CN2884788Y Autocar HID lamp ballast with output circuit protection |
| 03/28/2007 | CN2884787Y Preheat starting circuit of inductance ballast of fluorescent lamp |
| 03/28/2007 | CN2884786Y Street lamp electrical saver |
| 03/28/2007 | CN2884784Y Dual-lamp system controller and dual-lamp system using the same |
| 03/28/2007 | CN2883006Y LED illuminating observer for spray plotter |
| 03/28/2007 | CN1939100A High voltage discharge lamp lighting apparatus and luminaire |
| 03/28/2007 | CN1939099A Electronic ballast or operation and controlling device for illuminating elements provided with a programmable or configurable control unit |
| 03/28/2007 | CN1939098A Multiple-input electronic ballast with processor |
| 03/28/2007 | CN1939097A Discharge lamp operating device |
| 03/28/2007 | CN1937877A Electronic ballast circuit with automatic restart function |
| 03/28/2007 | CN1937876A High voltage discharge lamp lighting device and illumination apparatus |
| 03/28/2007 | CN1937875A Lamplight control system and method |
| 03/27/2007 | US7196679 Power supply system and liquid crystal display device having the same |
| 03/27/2007 | US7196483 Balanced circuit for multi-LED driver |
| 03/27/2007 | US7196482 PWM controller with automatic low battery power reduction circuit and lighting device incorporating the controller |
| 03/27/2007 | US7196479 Electronic ballast having a protective circuit for a switching transistor of a converter |
| 03/27/2007 | US7196478 Circuit arrangement |
| 03/27/2007 | US7196477 Solar powered light assembly to produce light of varying colors |
| 03/27/2007 | US7196476 Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps |
| 03/27/2007 | CA2431914C Energy conservation dimmer device for gaseous discharge devices |
| 03/22/2007 | WO2007032641A1 Circuit breaker for keeping warm lamp |
| 03/22/2007 | WO2007031914A1 Controlled class-e dc ac converter |
| 03/22/2007 | WO2007031900A1 Method for operating a high-intensity discharge lamp, lamp driver and projection system |
| 03/22/2007 | WO2007031767A1 An electronic control gear and method of its use |
| 03/22/2007 | WO2006063845A3 Circuit arrangement for a starting unit of a discharge lamp |
| 03/22/2007 | WO2005027324A3 Split phase inverters for ccfl backlight system |
| 03/22/2007 | US20070063659 Device for turning on hgh-pressure discharge lamp and lighting apparatus |
| 03/22/2007 | US20070063658 Ballast |
| 03/22/2007 | CA2622307A1 An electronic control gear and method of its use |
| 03/21/2007 | EP1765043A2 Method and apparatus to balance the potential at lamp terminals |
| 03/21/2007 | EP1765042A2 Shutdown circuit for the inverter of an electronic ballast |
| 03/21/2007 | EP1763977A1 Fluorescent tube lamp drive circuit |
| 03/21/2007 | EP1763976A1 Method and driving circuit for operating a hid lamp |
| 03/21/2007 | EP1763975A1 High-frequency and high-voltage supply unit with retroactive control |
| 03/21/2007 | EP1763713A2 Method and system for enhanced dimming resolution in a light ballast through use of multiple control frequencies |
| 03/21/2007 | EP1452076B1 Programmable system for stabilising and regulating voltage in particular for the improved management of lighting units using fluorescent bulbs and like |
| 03/21/2007 | EP1346612B1 Improved control circuit for power factor corrected electronic ballasts and power supplies |
| 03/21/2007 | CN2882189Y High lighting laser remote control switch |
| 03/21/2007 | CN1933694A Multifunction protection driver system and method for cold-cathod and external electrode fluorescence lamp |
| 03/21/2007 | CN1933693A Electric circuit device for driving high voltage discharge lamp |
| 03/21/2007 | CN1933692A Display apparatus and method of providing power to light source |
| 03/21/2007 | CN1933095A Power-saving lamp with electrodeless lamp as light source |
| 03/21/2007 | CN1306854C Electric discharge lamp and electric discharge lamp drive device |
| 03/21/2007 | CN1306554C Hot-cathode fluorescent lamp without filament |
| 03/21/2007 | CN1305775C Local used type water treatment system for treatment of water |
| 03/20/2007 | US7193374 Planar light source device and liquid crystal display apparatus having the same |
| 03/20/2007 | US7193373 Electronic ballast having a converter which can continue to operate in the event of lamp failure |
| 03/20/2007 | US7193372 Electronic ballast with voltage converter having improved damping arrangement |
| 03/20/2007 | US7193371 Electronic ballast having timing unit correction |
| 03/20/2007 | US7193368 Parallel lamps with instant program start electronic ballast |
| 03/20/2007 | US7193363 Flat rare gas discharge lamp with variable output light color, illumination instrument comprising it, and its operating method |
| 03/20/2007 | CA2484690C Electronic high intensity discharge lamp driver |
| 03/15/2007 | WO2007030610A1 Motion picture projector with electrodeless light source |
| 03/15/2007 | WO2007029595A1 Discharge lamp drive control circuit |
| 03/15/2007 | WO2007029387A1 Discharge camp operating device |
| 03/15/2007 | WO2007028777A1 Circuit arrangement and method for the operation of a discharge lamp |
| 03/15/2007 | WO2007028467A1 Starter circuit with hf damping element |
| 03/15/2007 | WO2006121678A3 Dimmer for use with a three-way switch |
| 03/15/2007 | WO2006120641A3 Universal line voltage dimming method and system |
| 03/15/2007 | US20070057803 Projection television receiver having a projection lamp life indicator |
| 03/15/2007 | US20070057643 Driver system and method with multi-function protection for cold-cathode fluorescent lamp and external-electrode fluorescent lamp |
| 03/15/2007 | US20070057642 Lamp driver circuit |
| 03/15/2007 | US20070057640 Apparatus and method for providing dimming control of lamps and electrical lighting systems |
| 03/15/2007 | US20070057639 Light output modulation for data transmission |
| 03/15/2007 | DE102005044031A1 Determining the circadian of effective irradiation or dosage of radiation source used in planning lighting mechanisms, by using measured wavelength values, visually effective radiation of radiation source, and turbidity of subject's eyes |
| 03/15/2007 | CA2621467A1 Motion picture projector with electrodeless light source |
| 03/14/2007 | EP1763292A1 Electric discharge control device |
| 03/14/2007 | EP1763291A1 Electric discharge control device |
| 03/14/2007 | EP1763290A1 Electric discharge control device |
| 03/14/2007 | EP1763289A1 Electric discharge control device |
| 03/14/2007 | EP1763288A1 Electric discharge control device |
| 03/14/2007 | EP1762127A1 Gas discharge lamp driving method |
| 03/14/2007 | EP1762126A1 Power supply for a metal vapour lamp |
| 03/14/2007 | EP1762124A2 Methods and apparatus for an improved amplifier for driving a non-linear load |
| 03/14/2007 | EP1761832A1 Method and circuit for active power factor correction |
| 03/14/2007 | CN2879592Y Fluorescent lamp graded light modulator |
| 03/14/2007 | CN2879591Y Electronic ballasts |
| 03/14/2007 | CN2879590Y Series-wound electronic ballasts |
| 03/14/2007 | CN2879589Y Electronic blast |
| 03/14/2007 | CN2879588Y Compensating voltage-regulating and stabilizing apparatus |
| 03/14/2007 | CN1930925A Lamp driver using solar cells |
| 03/14/2007 | CN1930924A Hybrid power supply system |
| 03/14/2007 | CN1929712A Controller for detachable one-master-driving-two vehicle xenon lamp stabilizing device |
| 03/14/2007 | CN1929711A Tube flow equalizing application circuit |