| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 02/22/2000 | US6028399 Ballast circuit with a capacitive and inductive feedback path |
| 02/22/2000 | US6028398 Cold cathode fluorescent lamp driving apparatus using a piezoelectric transformer |
| 02/22/2000 | US6028397 Buck converter switching scheme |
| 02/22/2000 | CA2154699C Energy saving power control system |
| 02/17/2000 | DE19848196A1 Gas discharge lamp system for running on low voltage busbars has lamps connected to ballast device allowing them to be run at mains frequency and with high frequency voltage. |
| 02/17/2000 | DE19834035A1 Compact low voltage energy-saving lamp has standard pin socket for halogen lamps with low voltage full-wave rectifier circuit suitable for direct and alternating voltages |
| 02/17/2000 | DE19831042A1 Beleuchtungssystem mit einer Hochdruckentladungslampe Lighting system with a high-pressure discharge lamp |
| 02/16/2000 | EP0979599A4 Three-way dimming ballast circuit with passive power factor correction |
| 02/16/2000 | EP0979599A1 Three-way dimming ballast circuit with passive power factor correction |
| 02/16/2000 | EP0727134B1 Circuit arrangement |
| 02/16/2000 | CN2364655Y Preheated electronic ballast for fluorescent lamp |
| 02/16/2000 | CN2364654Y Electronic ballast for high intensity gas discharge lamp |
| 02/16/2000 | CN1244767A Power-saving circuit for fluorescent light |
| 02/16/2000 | CN1049553C 镇流电路 Ballast circuit |
| 02/15/2000 | US6025824 Piezoelectric transformer driving circuit and cold cathode tube illuminating device using the same |
| 02/15/2000 | US6025679 Lighting space controller |
| 02/15/2000 | US6025672 Gas Discharge surge tube with specific trigger wires arrangement |
| 02/10/2000 | WO2000007416A1 Fluorescent lamp dimmer system with lamp seasoning |
| 02/10/2000 | WO2000007415A1 Electronic ballast |
| 02/10/2000 | WO2000007414A1 Preconditioner |
| 02/10/2000 | WO2000007413A1 Discharge lamp operating device |
| 02/10/2000 | DE19823641A1 Zünder für eine Gasentladungslampe, insbesondere Hochdruck-Gasentladungslampe für Kraftfahrzeugscheinwerfer Igniter for a gas discharge lamp, in particular high-pressure gas discharge lamp for motor vehicle headlights |
| 02/09/2000 | EP0979026A2 Switching power supply, particularly for high-pressure lamps and neon tubes |
| 02/09/2000 | EP0979025A1 Method and circuit of an electronic ballast |
| 02/09/2000 | EP0978756A1 Projection display apparatus |
| 02/09/2000 | EP0978223A1 Method for dimming a fluorescent lamp arranged in the secondary circuit of a transformer and arrangement to implement said method |
| 02/09/2000 | EP0978222A1 Detection circuit for detecting arc instabilities of a high intensity discharge lamp |
| 02/09/2000 | EP0978221A1 Circuitry for dimming a fluorescent lamp |
| 02/09/2000 | CN2363454Y Energy-saving preheating structure for starting fluorescent lamp |
| 02/09/2000 | CN1049319C Light controlling system in fluorescent lamp illumination |
| 02/09/2000 | CN1049318C Single touch flash charger control |
| 02/09/2000 | CN1049317C Zero voltate switching controller of resonance mode converter and electronic ballast using the same |
| 02/08/2000 | US6023376 Lens barrel having a linear guide mechanism |
| 02/08/2000 | US6023132 Electronic ballast deriving auxilliary power from lamp output |
| 02/08/2000 | US6023131 Backlight device for a liquid crystal display |
| 02/08/2000 | CA2149327C Circuit arrangement for operating low-pressure discharge lamps |
| 02/03/2000 | WO2000005930A1 Subcompact fluorescent lamp |
| 02/03/2000 | WO2000005634A1 Electronic ballast with frequency management |
| 02/03/2000 | DE19830368A1 Elektronisches Vorschaltgerät mit Einschaltstrombegrenzung Electronic ballast with inrush |
| 02/02/2000 | EP0940062A4 Method and apparatus for powering an electrodeless lamp with reduced radio frequency interference |
| 02/02/2000 | CN2362255Y Life-prolonging electronic ballast energy-saving lamp |
| 02/02/2000 | CN2362254Y Energy-saving inductive daylight lamp ballast |
| 02/02/2000 | CN2362207Y Diamond ball energy-saving lamp |
| 02/02/2000 | CN1243655A Ballast for high-intensity discharge lamp |
| 02/02/2000 | CN1243415A Flashing device |
| 02/02/2000 | CN1243414A Circuit for exciting cold cathode fluorescent lamp |
| 02/01/2000 | US6021055 Intentional cross conduction of converter circuit to ignite high ignition voltage loads |
| 02/01/2000 | US6020867 Display apparatus |
| 02/01/2000 | US6020691 Driving circuit for high intensity discharge lamp electronic ballast |
| 02/01/2000 | US6020689 Anti-flicker scheme for a fluorescent lamp ballast driver |
| 02/01/2000 | US6020688 Converter/inverter full bridge ballast circuit |
| 01/27/2000 | WO2000004529A1 Method for operating a liquid crystal display device and liquid crystal display device with temperature compensation |
| 01/27/2000 | DE19924516A1 Starter for high-pressure discharge lamps used as head lamp in vehicle, has target electric power setting unit to set-up target electric power based on charging voltage of capacitor |
| 01/26/2000 | EP0975204A1 Light source using dielectric barrier discharge lamp |
| 01/26/2000 | EP0975007A1 Lighting system with a high pressure discharge lamp |
| 01/26/2000 | EP0974247A1 Circuit for actuating at least one electrode-less discharge lamp |
| 01/26/2000 | EP0974246A1 Method and circuit for operating an electrical light |
| 01/26/2000 | EP0974081A1 Power supply and electronic ballast with low-cost inverter bootstrap power source |
| 01/26/2000 | EP0943123A4 Modular high power modulator |
| 01/26/2000 | CN2361053Y Light regulatable compact energy saving fluorescent lamp |
| 01/26/2000 | CN2360934Y Electronic glow mixed luxurious neon lamp |
| 01/26/2000 | CN1048830C Circuit arrangement |
| 01/25/2000 | US6018221 Lighting circuit and lighting device |
| 01/25/2000 | US6018220 Gas discharge lamp ballast circuit with a non-electrolytic smoothing capacitor for rectified current |
| 01/25/2000 | CA2004334C Power control circuit for discharge lamp and method of operating the same |
| 01/20/2000 | DE19831822A1 LCD-device operating method e.g. for automobile |
| 01/20/2000 | DE19831460A1 Control electronics for dimming when switching on and off fluorescent lamps in aquarium, terrarium |
| 01/20/2000 | DE19830519A1 Signalleuchte Signal light |
| 01/19/2000 | EP0973361A2 Discharge lamp lighting device |
| 01/19/2000 | EP0973360A2 Signal lighting device |
| 01/19/2000 | EP0973359A2 Electronic ballast with inrush current limitation |
| 01/19/2000 | EP0972429A1 Ballast method and apparatus and coupling therefor |
| 01/19/2000 | CN1242136A A power control apparatus for lighting system |
| 01/19/2000 | CN1241802A Microwave non-electrode discharge lamp device |
| 01/19/2000 | CN1048615C Electric power supply apparatus for initiating several lamps instantanously |
| 01/18/2000 | US6016257 Voltage regulated power supply utilizing phase shift control |
| 01/13/2000 | WO2000002423A2 Power supply for gas discharge lamp |
| 01/13/2000 | WO2000002422A2 Circuit arrangement |
| 01/12/2000 | EP0970593A1 Power supply system for a group of lamps |
| 01/12/2000 | EP0970592A1 Method for producing impulse voltage sequences to operate discharge lamps and circuit pertaining thereto |
| 01/12/2000 | EP0875129B1 Gas discharge lamp |
| 01/12/2000 | CN1241352A Circuit arrangement |
| 01/12/2000 | CN1241351A 镇流器 Ballast |
| 01/12/2000 | CN1241321A Voltage regulation scheme for power supply having voltage-fed inverter |
| 01/12/2000 | CN1048380C Circuit arrangement |
| 01/11/2000 | US6013969 Piezoelectric transformer inverter |
| 01/11/2000 | CA2027943C Metal vapor discharge lamp |
| 01/08/2000 | CA2273112A1 Method of dc operation of a discharge lamp with arc stabilization |
| 01/06/2000 | WO2000001205A1 Ballast circuit |
| 01/05/2000 | EP0969702A2 Control unit for a lighting system |
| 01/05/2000 | CN2357461Y Energy-saving LC type electronic starting fluorescent lamp ballast |
| 01/05/2000 | CN2357460Y Electronic ballast integrated with straighting tube-shaped fluorescent tube |
| 01/05/2000 | CN1048143C Method for discharge lamp work and its electric circuit structure |
| 01/05/2000 | CN1048142C Circuit arrangement for operating a discharge lamp |
| 01/04/2000 | US6011363 Constant wattage electric ballast circuit for lamp |
| 01/04/2000 | US6011362 Magnetic ballast adaptor circuit |
| 01/04/2000 | US6011361 Buck converter switching scheme |
| 01/04/2000 | US6011360 High efficiency dimmable cold cathode fluorescent lamp ballast |
| 01/04/2000 | US6011359 Multiple flash/single lamp circuit for fast sequential strobing |
| 01/04/2000 | US6011358 Ballast for independent parallel operation of low-pressure gas discharge lamps |