Patents
Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100)
11/2005
11/30/2005CN1230040C Apparatus and method for reducing energy consumption
11/30/2005CN1229879C Piezoelectric transformer
11/29/2005US6969975 Circuit arrangement for power factor correction
11/29/2005US6969958 Square wave drive system
11/29/2005US6969957 Ignition system for a high-frequency high-intensity discharge lamp system
11/29/2005US6969956 Current control apparatus for fluorescent lamps
11/29/2005US6969955 Method and apparatus for dimming control of electronic ballasts
11/26/2005CA2508131A1 Ballast for a discharge lamp having a continuous-operation control circuit
11/24/2005WO2005112523A1 Cicuit for driving cold cathode tubes and external electrode fluorescent lamps
11/24/2005WO2005111758A1 Method and circuit for active power factor correction
11/24/2005US20050259983 Strobe light emitting apparatus and camera
11/24/2005US20050258783 Inverter circuit for lighting backlight of liquid crystal display and method for driving the same
11/24/2005US20050258782 High-voltage discharge lamp operating device
11/24/2005US20050258781 Driving voltage controller for light-emitting source
11/24/2005US20050258780 Lamp frequency control system for display and method for controlling lamp frequency
11/24/2005US20050258779 Light source, projector, and method of driving arc tube
11/24/2005US20050258778 Method and apparatus for single-ended conversion of DC to Ac power for driving discharge lamps
11/24/2005US20050258765 Arc maintenance device for high density discharge lamps including an adaptive wave form monitor
11/24/2005DE102005010518A1 Exchangeable end caps for low-energy lights with protective tubes are designed so that the mechanical connection between the bulb protection tube and the end cap can be undone
11/23/2005EP1598592A2 Illumination device
11/23/2005EP1597944A1 Apparatus for power control in lighting systems
11/23/2005EP1356714B1 Ballast and method of feeding a fluorescent lamp
11/23/2005EP1120021B1 Modular high frequency ballast architecture
11/23/2005CN2742722Y Lamp tube even current application circuit
11/23/2005CN1701645A Apparatus for supplying power, backlight assembly and liquid crystal display apparatus having the same
11/23/2005CN1701643A Remote control of electronic light ballast and other devices field of the invention
11/23/2005CN1701604A Lighting system provided with a sequential colour filtering and a high-pressure discharge lamp
11/23/2005CN1700838A Inverter circuit for lighting backlight of liquid crystal display and method for driving the same
11/23/2005CN1700837A Headlight power supply system for electric scooter
11/23/2005CN1700836A Electronic transformer for low-pressure lamp
11/23/2005CN1700579A Method and apparatus for single-ended conversion of DC to AC power for driving discharge lamps
11/23/2005CN1700087A Light source, projector, and method of driving arc tube
11/23/2005CN1228998C Lighting device of discharge lamp and lighting device
11/23/2005CN1228812C Electrodeless illuminating system
11/22/2005US6967558 Inverter transformer and inverter circuit
11/22/2005US6967449 Can be utilized in an ideal manner to light a high-pressure discharge lamp such as a high-pressure mercury lamp or an ultra high-pressure mercury lamp with AC rectangular wave power
11/22/2005US6967446 High pressure discharge lamp lighting apparatus and high pressure discharge lamp lighting method
11/22/2005CA2267918C Circuit arrangement for operating low-pressure discharge lamps
11/17/2005WO2005109968A1 Method and circuit arrangement for the operation of a discharge lamp
11/17/2005WO2005109967A1 Cold-cathode tube lighting device
11/17/2005WO2005109966A1 Cold-cathode tube lighting device
11/17/2005WO2005109965A1 Circuit arrangement and method for striking a gas discharge lamp with a time-limited starting phase
11/17/2005US20050253537 Backlight assembly, display device and driving apparatus of light source for display device
11/17/2005US20050253536 Fluorescent lamp driver and liquid crystal display apparatus
11/17/2005US20050253535 Starter
11/17/2005US20050253534 Circuit for driving cold cathode tubes and external electrode fluorescent lamps
11/17/2005US20050253532 Lamp fault detector
11/17/2005DE4426664B4 Vorrichtung zum Starten und Betreiben einer Hochdruck-Entladungs-Lampe A device for starting and operating a high pressure discharge lamp
11/17/2005DE202005013754U1 Electronic control gear for operating discharge lamp, has measuring device to measure parameter that correlates to increased electrode temperature, and control device to react to temperature by adjustment of operating parameter of gear
11/17/2005DE202005013753U1 Electronic ballast for operating discharge lamp, has control device to ignite lamp discharging in non-repetitive process for parameter e.g. voltage, that is correlated to temperature of electrodes during measurement of parameter
11/17/2005DE202005013674U1 Voltage isolation for a SEPIC type converter circuit used in starter circuits for operating low pressure gas discharge lamps
11/17/2005DE19843643B4 Schaltungsanordnung zum Starten und Betreiben einer Hochdruck-Entladungslampe Circuit arrangement for starting and operating a high-pressure discharge lamp
11/17/2005DE102004037021A1 Verfahren zum Betreiben einer Lampe und Treiberschaltkreis hierfür Method for operating a lamp and driver circuit therefor
11/17/2005DE102004019600A1 Überbrückungsvorrichtung zum Überbrücken einer elektrischen Last Bridging device for bridging an electrical load
11/16/2005EP1535496A4 Radio frequency driven ultra-violet lamp
11/16/2005EP1277375B1 Lamp start-up sequence with interruption period
11/16/2005EP1149511B1 Digital power controller
11/16/2005CN2741317Y Fluorescent tube current controller
11/16/2005CN1698360A Image display
11/16/2005CN1698087A Active matrix type display apparatus
11/16/2005CN1697585A Warming up circuit of generating instant heat for fluorescent lamp tube with cold cathode
11/16/2005CN1697584A Fluorescent lamp driver and liquid crystal display apparatus
11/16/2005CN1696793A Backlight assembly, display device and driving apparatus of light source for display device
11/16/2005CN1696567A Lighting apparatus for discharge lamp
11/16/2005CN1227955C Protection and reset circuit against burst
11/16/2005CN1227954C Circuit arrangement
11/16/2005CN1227680C Contra variant transformer and discharge lamp firing circuit using the same contra variant transformer
11/15/2005US6965322 Traffic signal operation during power outages
11/15/2005US6965204 Ballasting circuit for optimizing the current in the take-over/warm-up phase
11/15/2005US6965203 Method and circuit for repetitively firing a flash lamp or the like
11/15/2005CA2184321C Lamp starting circuit
11/10/2005WO2005107339A1 Device for generation of voltage pulse sequences in particular for operation of capacitive discharge lamps
11/10/2005WO2005059964A3 Current-mode driver
11/10/2005US20050250375 Universal electrical plug and socket
11/10/2005US20050248442 Device and method for synchronizing a flasher frequency with a central flashing frequency
11/10/2005US20050248299 Light system manager
11/10/2005US20050248298 Duplexing protection apparatus and operation method thereof
11/10/2005US20050248297 Methods and apparatus for an improved amplifier for driving a dynamic load
11/10/2005US20050248295 Power factor correction circuit for electronic ballast
11/10/2005US20050248294 Vehicular lamp
11/10/2005US20050248293 Electronic ballast for a lamp
11/10/2005US20050248291 Methods and apparatus for an improved amplifier for driving a non-linear load
11/10/2005US20050248290 Lighting apparatus for discharge lamp
11/10/2005US20050248289 Driver for a gas discharge lamp
11/10/2005US20050248288 Light modulation method and apparatus for cold cathode fluorescent lamps
11/10/2005US20050248287 Current control apparatus for fluorescent lamps
11/10/2005US20050248285 Solar powered light assembly to produce light of varying colours
11/10/2005US20050248282 Vehicular lamp, cold cathode fluorescent lamp lighting apparatus, and cold cathode fluorescent lamp lighting method
11/10/2005US20050248281 Plasma lamp with dielectric waveguide
11/10/2005DE102004020500A1 Operating circuit for high-pressure gas discharge lamp has voltage converter supplying load circuit with capacitor in series with secondary winding of ignition transformer of pulse ignition device for lamp
11/10/2005DE102004020499A1 Schaltungsanordnung zum Betrieb von Hochdruckentladungslampen und Betriebsverfahren für eine Hochdruckentladungslampe Circuit arrangement for operating high-pressure discharge lamps and operating method for a high pressure discharge lamp
11/10/2005DE102004020397A1 Verfahren zum Betreiben einer Hochdruckentladungslampe Method for operating a high pressure discharge lamp
11/10/2005DE102004018804A1 Vorrichtung zur Steuerung einer Vielzahl von Leuchten An apparatus for controlling a plurality of lights
11/10/2005CA2507054A1 Universal electric plug and socket
11/09/2005EP1594349A1 Electronic ballast for a lamp
11/09/2005EP1594156A2 Device for operation of a high pressure discharge lamp
11/09/2005EP1593906A2 Illumination device
11/09/2005EP1593290A1 Circuit arrangement
11/09/2005EP1593289A1 Dimmable ballast for an electrodeless discharge lamp
11/09/2005EP1593133A2 Inductive coil assembly