| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 11/18/2004 | US20040227434 Piezoelectric transformer, power supply circuit and lighting unit using the same |
| 11/18/2004 | DE202004005507U1 Fluorescent tube circuit comprises combining two different light means in one light by replacing inductive pre switching by a high voltage halogen lamp |
| 11/18/2004 | DE10319950A1 Betriebsgerät und Verfahren zum Betreiben von Gasentladungslampen Control unit and method for operating gas discharge lamps, |
| 11/18/2004 | DE10319571A1 Beleuchtungssystem mit sequentieller Farbfilterung und Hochdruckentladungslampe Lighting system with sequential color filtering and high intensity discharge lamp |
| 11/18/2004 | DE10319511A1 Zündschaltung mit geregelter Zündspannung Ignition with controlled ignition |
| 11/18/2004 | DE10297588T5 Halogen-Grundkonverter-IC Halogen basic converter IC |
| 11/18/2004 | DE102004016332A1 Entladungslampenstarter Discharge lamp starter |
| 11/18/2004 | CA2525067A1 High intensity discharge lamp control |
| 11/17/2004 | EP1478213A1 Electrodeless discharge lamp lighting device, light bulb type electrodeless fluorescent lamp and discharge lamp lighting device |
| 11/17/2004 | EP1477047A2 A fluorescent lamp brightness control process by ballast frequency adjustment |
| 11/17/2004 | EP1477046A1 Lamp sensor for a choke for operating a gas discharge lamp |
| 11/17/2004 | EP1477045A2 Starter assembly for a gas discharge lamp |
| 11/17/2004 | EP1476239A1 Removable closure assembly for a water treatment system |
| 11/17/2004 | CN2657330Y Anion fluorescent energy-saving lamp |
| 11/17/2004 | CN2657329Y DC integrated energy-saving emergency lamp |
| 11/17/2004 | CN2657328Y Power supply for deuterium lamp |
| 11/17/2004 | CN2657188Y Power-adjustable gas discharging lamp |
| 11/17/2004 | CN2656804Y Colour double-layer integrated transparent electronic light-changing insulating lamps and lanterns |
| 11/17/2004 | CN1547873A Circuit settings |
| 11/17/2004 | CN1547872A Circuit settings |
| 11/17/2004 | CN1547871A High-voltage discharge lamp lighting apparatus, high-voltage discharge lamp apparatus, and floodlight projector apparatus |
| 11/17/2004 | CN1547686A Electronic ballast for cold cathode fluorescent lamp with dimming |
| 11/17/2004 | CN1547062A Cold-cathode tube lighting circuit with protection circuit for piezoelectric transformer |
| 11/16/2004 | US6819063 Sensing voltage for fluorescent lamp protection |
| 11/16/2004 | US6819062 Discharge lamp lighting apparatus, light source apparatus and projection type display apparatus |
| 11/16/2004 | US6819061 Power supply apparatus for light source |
| 11/16/2004 | US6819060 Power line monitor and interrupt arrangement for averting premature lamp mortality in low voltage conditions |
| 11/16/2004 | US6819059 Flash strobe power supply system and method |
| 11/16/2004 | US6819058 Discharge-lamp lighting circuit |
| 11/16/2004 | US6819057 Ballast self oscillating inverter with phase controlled voltage feedback |
| 11/16/2004 | CA2192506C Method and circuit arrangement for operating a discharge lamp |
| 11/11/2004 | WO2004098245A1 Circuit arrangement |
| 11/11/2004 | WO2004098244A1 Starter circuit having regulated starting voltage |
| 11/11/2004 | WO2004098182A1 Lighting system provided with a sequential colour filtering and a high-pressure discharge lamp |
| 11/11/2004 | WO2004097866A1 Apparatus for supplying energy to a load and a related system |
| 11/11/2004 | WO2001082658A9 Lamp start-up sequence with interruption period |
| 11/11/2004 | US20040222752 Electronic ballast for a discharge lamp |
| 11/11/2004 | US20040222751 Starter assembly for a gas discharge lamp |
| 11/11/2004 | US20040222750 Lighting control system with variable arc control including start-up circuit for providing a bias voltage supply |
| 11/11/2004 | US20040222718 Piezoelectric transformer and strobe apparatus having the piezoelectric transfer |
| 11/11/2004 | DE20310133U1 Light source has fluorescent lamp light generating element connected to adapter that is at least partly and preferably completely arranged in transparent housing in which fluorescent lamp is arranged |
| 11/11/2004 | DE102004020386A1 Anschlussanordnung für Sicherheitslichter Terminal assembly for security lights |
| 11/11/2004 | DE102004009881A1 Mikrowellenbetriebener Leuchtkopf mit einem externen Verschluss Microwave-powered lamp head with an external shutter |
| 11/11/2004 | CA2522173A1 Apparatus for supplying energy to a load and a related system |
| 11/11/2004 | CA2495025A1 Illuminating system having sequential color filtering and a high-pressure discharge lamp |
| 11/10/2004 | EP1476003A2 Power supply and method for driving discharge lamps |
| 11/10/2004 | EP1474957A1 High power factor electronic ballast with lossless switching |
| 11/10/2004 | EP1273211B1 Method and circuit arrangement for producing an ignition voltage for fluorescent lamps |
| 11/10/2004 | CN2655588Y Electronic rectifier for exciting electrodeless discharge lamp |
| 11/10/2004 | CN2655040Y Non-strobe fluorescent lamp |
| 11/10/2004 | CN1175713C Light source using dielectric barrier discharge lamp, and power supply thereof |
| 11/10/2004 | CN1175554C Control circuit and method for piezoelectric transformer |
| 11/09/2004 | US6815912 Discharge lamp lighting apparatus and discharge lamp apparatus |
| 11/09/2004 | US6815910 Device for operating a high pressure discharge lamp |
| 11/09/2004 | US6815908 Dimmable self-oscillating electronic ballast for fluorescent lamp |
| 11/09/2004 | US6815907 Pulse-width modulation for operating high pressure lamps |
| 11/09/2004 | US6815906 Gas discharge lamp drive circuitry |
| 11/09/2004 | US6815896 Bulb with reflector and electrodeless discharge lamp using same |
| 11/09/2004 | US6814462 Under-cabinet lighting system |
| 11/09/2004 | CA2353747C High pressure discharge lamp driving apparatus, luminaire and high pressure discharge lamp driving method |
| 11/09/2004 | CA2200903C Circuit arrangement for operating electric lamps, and an operating method for electric lamps |
| 11/04/2004 | WO2004095668A2 Discharge lamp lighting control device |
| 11/04/2004 | WO2004095503A2 Assembly of a fluorescent lamp and an extension means |
| 11/04/2004 | WO2004095407A1 Plasma display and power module |
| 11/04/2004 | US20040218325 Electronic power-saving power control circuit |
| 11/04/2004 | US20040218177 Apparatus and methods relating to wavelength conditioning of illumination |
| 11/04/2004 | US20040217746 Single stage PFC and power converter unit |
| 11/04/2004 | US20040217742 High intensity discharge lamp ballast circuit |
| 11/04/2004 | US20040217719 Television receiver and cold-cathode tube dimmer |
| 11/04/2004 | US20040217717 Operating device and method for operating gas discharge lamps |
| 11/04/2004 | US20040217716 System and method for preventing acoustc arc resonance in a HID lamp |
| 11/04/2004 | US20040217715 Switch frequency adjusting system and method for burst mode of liquid crystal display |
| 11/04/2004 | DE10392169T5 Elektronisches Vorschaltgerät für eine Entladungslampe Electronic ballast for a discharge lamp |
| 11/04/2004 | DE10296991T5 Entladelampen-Betätigungsvorrichtung Discharge lamps actuator |
| 11/03/2004 | EP1473588A1 Projection display apparatus and controller for controlling the restart of the lamp |
| 11/03/2004 | EP1472912A1 Device and method for controlling a gas discharge lamp, and lighting system with gas discharge lamp and control device |
| 11/03/2004 | EP1472911A1 Device and method for operating a discharge lamp |
| 11/03/2004 | EP1472776A1 Power factor correction circuit |
| 11/03/2004 | EP1472677A1 Seamless highlighting in lcd monitors and lcd-tv |
| 11/03/2004 | EP1472582A1 Power regulator employing a sinusoidal reference |
| 11/03/2004 | EP1101156A4 Electronic ballast with frequency management |
| 11/03/2004 | EP1057377B1 Circuit arrangement |
| 11/03/2004 | CN2653836Y Energysaving electronic ballast |
| 11/03/2004 | CN2653835Y Eye-protection brain-protection fluorescent lamp control circuit |
| 11/03/2004 | CN1543755A 电子镇流器 Electronic Ballast |
| 11/03/2004 | CN1543289A Operating device and method for operating gas discharge lamps |
| 11/03/2004 | CN1543288A Current control apparatus and method |
| 11/03/2004 | CN1543287A Discharge lamp starting device |
| 11/03/2004 | CN1543286A Fluorescent lamp drive device and mini self-ballasted fluorescent lamp having the same |
| 11/03/2004 | CN1542900A PTC environmental protection cold-light source |
| 11/02/2004 | US6813125 Secondary ground fault protected luminous tube transformer |
| 11/02/2004 | US6812916 Driving circuit for LCD backlight |
| 11/02/2004 | US6812649 Device and method for controlling LCD backlight |
| 11/02/2004 | US6812645 Inductively powered lamp assembly |
| 11/02/2004 | US6812623 Higher order longitudinal extensional mode vibrations; increased electromechanical coupling factor |
| 11/02/2004 | CA2465389A1 Operating device and method for operating gas discharge lamps |
| 10/28/2004 | US20040212787 Projection display apparatus with capability of controlling whether to cool lamp depending on lamp temperature when restarting lamp |
| 10/28/2004 | US20040212319 High-voltage transformer and discharge lamp driving apparatus |
| 10/28/2004 | US20040212318 Discharge lamp lighting device and lighting apparatus |
| 10/28/2004 | US20040212314 Dimmable flex arm lamp |