| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 01/05/2010 | US7642735 Using pulse density modulation for controlling dimmable electronic lighting ballasts |
| 01/05/2010 | US7642731 Inverter for driving lamp and method for driving lamp using the same |
| 01/05/2010 | US7642728 Circuit having EMI and current leakage to ground control circuit |
| 01/05/2010 | US7642727 Automotive high intensity discharge ballast |
| 01/05/2010 | US7642726 Power supply apparatus, backlight assembly and liquid crystal display apparatus having the same |
| 12/31/2009 | US20090323033 Discharge lamp lighting device and image display device |
| 12/31/2009 | US20090322991 Illuminating Device and Liquid Crystal Display |
| 12/31/2009 | US20090322257 Switching mode power supply for plasma display panel |
| 12/31/2009 | US20090322248 Led driving circuit and light emitting diode array device |
| 12/31/2009 | US20090322247 Dimming buck type LED driving apparatus |
| 12/31/2009 | US20090322246 Discharge Lamp Ballast and Fixture with Controlled Preheating |
| 12/31/2009 | US20090322245 Discharge lamp lighting apparatus |
| 12/31/2009 | US20090322244 Piezoelectric transformer light adjusting noise reduction circuit |
| 12/31/2009 | US20090322243 Driving circuit and method of backlight module |
| 12/31/2009 | US20090322242 Starting circuit of starting device for high-pressure discharge lamp including auxiliary light source, starting device including the starting circuit, and lighting system including the starting device |
| 12/31/2009 | US20090322240 Electrodeless lamps with externally-grounded probes and improved bulb assemblies |
| 12/31/2009 | US20090322239 Induction lamp lighting device and illumination apparatus |
| 12/31/2009 | US20090322237 Apparatus and method enabling fully dimmable operation of a compact fluorescent lamp |
| 12/31/2009 | US20090322231 Lamp-holding device and system comprising lamp-holding devices and wireless controller |
| 12/31/2009 | DE102008037250A1 Schnellstart für Niederdruckquecksilberlampe Quick Start for low-pressure mercury lamp |
| 12/30/2009 | WO2009158334A2 Ballast with lamp-diagnostic filament heating, and method therefor |
| 12/30/2009 | WO2009158330A2 Ballast with lamp filament detection |
| 12/30/2009 | WO2009158312A1 Electrodeless lamps with externally-grounded probes and improved bulb assemblies |
| 12/30/2009 | WO2009157223A1 Light source device |
| 12/30/2009 | WO2009156560A1 Capacitor |
| 12/30/2009 | WO2008123932A3 El lamp driver with plural outputs |
| 12/30/2009 | EP2138018A2 System and method for controlling voltage on discharge capacitors which control light energy from flash lamps |
| 12/30/2009 | EP2138017A1 Circuit arrangement for operating a vacuum gas discharge lamp |
| 12/30/2009 | EP2138016A1 Illumination device having inrush current limiting circuit |
| 12/30/2009 | EP2138015A1 Circuit configuration for operating at least one discharge lamp and method for generating an auxiliary voltage |
| 12/30/2009 | EP2138014A1 Circuit arrangement for igniting and operating a discharge lamp |
| 12/30/2009 | EP1900262B1 Device and method for operating a high-pressure discharge lamp |
| 12/30/2009 | CN201374866Y Fluorescent lamp adjuster and fluorescent lamp with adjuster |
| 12/30/2009 | CN201374865Y Inverter control circuit |
| 12/30/2009 | CN201374864Y Electronic ballast with switching-type light adjusting framework |
| 12/30/2009 | CN201374863Y Starting-repeatable circuit of electronic ballast of fluorescent lamp |
| 12/30/2009 | CN201374862Y Acoustically and optically controlled fluorescent lamp |
| 12/30/2009 | CN201374861Y Abnormity protection circuit for electronic ballast |
| 12/30/2009 | CN201374860Y Lamp bulb shedding prevention device for electronic energy-saving lamp |
| 12/30/2009 | CN201374859Y High power factor electronic ballast |
| 12/30/2009 | CN201374858Y High voltage sodium lamp electronic ballast with failure automatic detecting function |
| 12/30/2009 | CN201374857Y Electronic ballast applying piezoelectric transformer |
| 12/30/2009 | CN201374856Y Flickering prevention device for electronic energy-saving lamp |
| 12/30/2009 | CN201374855Y Standby circuit for electromagnetic interference high-band attenuation of electronic ballast |
| 12/30/2009 | CN201374854Y Fluorescent lamp starting equipment and fluorescent lamp with equipment |
| 12/30/2009 | CN201373293Y Energy-saving lamp with touch light regulating function |
| 12/30/2009 | CN201373292Y Energy-saving lamp with auxiliary light source |
| 12/30/2009 | CN201373291Y Novel energy-saving lamp |
| 12/30/2009 | CN101617568A Electric discharge lamp operating device |
| 12/30/2009 | CN101616531A Digital current converter and device and method for controlling display |
| 12/30/2009 | CN101616530A Induction lamp lighting device and illumination apparatus |
| 12/30/2009 | CN100576708C DC/DC converter device and discharge lamp lighting device |
| 12/30/2009 | CN100576427C Built-in magnetic energy generator magnetic light |
| 12/30/2009 | CN100576418C High pressure discharge lamp illumination device |
| 12/30/2009 | CA2729233A1 Ballast with lamp filament detection |
| 12/30/2009 | CA2729010A1 Ballast with lamp-diagnostic filament heating, and method therefor |
| 12/30/2009 | CA2659976A1 False failure prevention circuit in emergency ballast |
| 12/29/2009 | US7639514 Adaptive inductive power supply |
| 12/29/2009 | US7639153 User interface for electronic devices |
| 12/29/2009 | US7639110 Inductively powered apparatus |
| 12/29/2009 | US7638952 Multiple discharge lamp lighting apparatus |
| 12/29/2009 | US7638951 Plasma lamp with stable feedback amplification and method therefor |
| 12/29/2009 | US7638950 Power line preconditioner for improved LED intensity control |
| 12/24/2009 | US20090315483 Light emitting diode illuminating apparatus |
| 12/24/2009 | US20090315482 Light emitting apparatus capable of controlling lighting color and method thereof |
| 12/24/2009 | US20090315480 Brightness-adjustable led driving circuit |
| 12/24/2009 | US20090315477 Converting dimmer switch ac output duty cycle variation into amplitude variation |
| 12/24/2009 | US20090315476 Device for generating light with a variable color |
| 12/24/2009 | US20090315474 Discharge lamp lighting apparatus |
| 12/24/2009 | US20090315473 Light-emitting device driving circuit and method thereof |
| 12/24/2009 | US20090315472 Backlight module |
| 12/24/2009 | US20090315470 High-pressure discharge lamp lighting device and lighting fixture using the same |
| 12/24/2009 | US20090315464 Transformer and backlight apparatus |
| 12/24/2009 | DE102009020883A1 Control input driving method for e.g. Zener diode, involves galvanically decoupling input by transformer, and switching on and off of input by transformer transmission of bipolar voltage impulses from control unit as clock signal source |
| 12/24/2009 | DE102004032105B4 Verfahren zur Lichtregulierung in künstlich beleuchteten Räumen Method for light control, artificially lit rooms |
| 12/23/2009 | WO2009154180A1 Illumination lighting device, illuminating device, and illuminating system |
| 12/23/2009 | WO2009153030A1 Method for operating a mercury low-pressure lamp, a quick-start mercury low-pressure lamp and use thereof |
| 12/23/2009 | WO2009152664A1 Annular electrodeless fluorescent lamp assembly with lamp head |
| 12/23/2009 | EP2136608A2 Metal halide lamp |
| 12/23/2009 | EP2135489A2 System and method for providing adjustable ballast factor |
| 12/23/2009 | CN201369872Y Intelligent power-saving automatic dimming electronic ballast |
| 12/23/2009 | CN201369871Y Back light source driving system and electronic equipment |
| 12/23/2009 | CN201369870Y Multi lamp-tube driving circuit |
| 12/23/2009 | CN201369869Y Multi lamp-tube driving circuit |
| 12/23/2009 | CN201369868Y Light source driving device |
| 12/23/2009 | CN201369867Y Multi lamp-tube driving system |
| 12/23/2009 | CN201369866Y Pulse width modulation electronic ballast |
| 12/23/2009 | CN201369865Y Frequency changing circuit and liquid crystal display device |
| 12/23/2009 | CN201369864Y Circuit structure capable of driving multi lamps |
| 12/23/2009 | CN201369314Y Electrodeless lamp coupler |
| 12/23/2009 | CN201369313Y Plasma gaseous discharge lamp |
| 12/23/2009 | CN101611654A Apparatus for driving a gas discharge lamp |
| 12/23/2009 | CN101610631A Device and method for operating load |
| 12/23/2009 | CN101610630A Drive circuit of fluorescent tube |
| 12/23/2009 | CN101610629A Electronic ballast for lamp |
| 12/23/2009 | CN101610628A Method for stabilizing electric arc for gas discharge lamp |
| 12/23/2009 | CN101609634A Method for making sucking moulding luminescent words of Phi 4mm electrodeless lamps |
| 12/23/2009 | CN100574551C Method for adjusting fluorescent lamp brightness using grating wheel and light-adjusting electronic ballast |
| 12/23/2009 | CN100574550C Multi lamp tube driving system |
| 12/23/2009 | CN100574549C Drive circuit for operating at least one lamp in an associated load circuit |