Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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09/05/1995 | US5448136 Method and apparatus for current regulation in a gas discharge lamp |
09/05/1995 | US5448135 Apparatus for coupling electromagnetic radiation from a waveguide to an electrodeless lamp |
09/04/1995 | CA2141389A1 Modified half-bridge parallel-loaded series resonant converter topology for electronic ballast |
08/31/1995 | WO1995023494A1 Fault tolerant electronic ballast |
08/31/1995 | WO1995023426A1 Compact microwave source for exciting electrodeless lamps |
08/31/1995 | DE4406000A1 Dimmer for gas-discharge lamps driven off converter producing HF voltage |
08/31/1995 | CA2183988A1 Compact microwave source for exciting electrodeless lamps |
08/30/1995 | EP0669789A1 Circuit for operating at least one low-pressure discharge lamp |
08/30/1995 | EP0669788A1 Illumination dimmer system for fluorescent lamps |
08/30/1995 | EP0669075A1 Circuit arrangement for operating low-pressure discharge lamps. |
08/30/1995 | EP0669074A1 Ballast circuit equipped with ground fault detector |
08/30/1995 | CN2206533Y Glow starter for fluorescent lamp |
08/30/1995 | CN2206532Y Automatic starter for lamps and lanterns |
08/29/1995 | US5446350 Impedance matching circuit for an electrodeless fluorescent lamp ballast |
08/29/1995 | US5446349 Strobe circuit utilizing optocoupler in DC-to-DC converter |
08/29/1995 | US5446347 Electronic ballast with special DC supply |
08/29/1995 | US5446346 Electronic ballast with controlled DC supply voltage |
08/29/1995 | US5446345 Miniature portable flasher light |
08/29/1995 | US5446342 Light-output-controlled fluorescent lighting fixture |
08/29/1995 | CA2015281C Polarized electromagnetic relay |
08/24/1995 | WO1995022880A1 Gas discharge lamp dimmer circuit |
08/23/1995 | CN2206022Y Energy-saving electronic ballast |
08/23/1995 | CN2206021Y Electronic glow starter |
08/23/1995 | CN1107272A Automatic lighting circuit |
08/22/1995 | US5444336 An inverter driven lamp arrangement having a current detection circuitry coupled to a resonant output circuit |
08/22/1995 | US5444335 Method and apparatus for controlling an image display having gas discharge lamps |
08/22/1995 | US5444334 System for starting a high intensity discharge lamp |
08/22/1995 | US5444333 Electronic ballast circuit for a fluorescent light |
08/22/1995 | US5444310 Apparatus for operating discharge lamps |
08/17/1995 | WO1995022194A1 High frequency ac/ac converter with power factor correction |
08/17/1995 | DE4425679A1 Operating system for operating high pressure gas discharge lamp |
08/16/1995 | EP0667734A1 Electronic reactor for the supply of discharge lamps with an oscillator circuit to limit the crest factor and to correct the power factor |
08/16/1995 | CN2205623Y Multifunction contactless micro electric starter |
08/15/1995 | US5442261 Energy saving lamp controller |
08/15/1995 | US5442259 Power supply for vacuum fluorescent displays |
08/15/1995 | US5442257 System for and method of lighting discharge lamp having failure detection of discharge lamp, external wiring and lighting circuit |
08/12/1995 | CA2142250A1 Electronic reactor for the supply of discharge lamps with an oscillator circuit to limit the crest factor and to correct the power factor |
08/09/1995 | CN1106605A Device for operating a high pressure gas discharge lamp |
08/09/1995 | CN1106604A Fluorescent lamp energizing circuit |
08/09/1995 | CN1106603A Fluorescent lamp comprising dry reed starter, plate light tube and silicon steel sheet ballast |
08/09/1995 | CN1106587A Power network adaptor for adjusting output |
08/08/1995 | US5440475 Electronic Ballast with low harmonic distortion |
08/08/1995 | US5440324 Backlighting for liquid crystal display |
08/08/1995 | US5440209 Driven full-bridge inverter ballast |
08/08/1995 | US5440205 Fluorescent lamp starter having a transistor base control means |
08/08/1995 | US5440204 Gas discharge lamp lighting system with phase synchronized gating of d.c. electrode voltage |
08/02/1995 | EP0665600A1 Discharge tube driving device and piezoelectric transformer therefor |
08/02/1995 | EP0664944A1 Parallel resonant ballast with boost |
08/02/1995 | CN2204454Y Leakage pulse autotransforming ballast |
08/02/1995 | CN2204370Y Induction-type neon-lamp group |
08/02/1995 | CN1106187A Integral lighting source composed of incandescent lamp, electronical circuit and special fluorescent lamp |
08/01/1995 | US5438243 Electronic ballast for instant start gas discharge lamps |
08/01/1995 | US5438242 Apparatus for controlling the brightness of a magnetron-excited lamp |
08/01/1995 | US5438239 Fluorescent lamp ballast with light output control |
08/01/1995 | US5438235 Electrostatic shield to reduce wall damage in an electrodeless high intensity discharge lamp |
07/27/1995 | WO1995020308A1 Method for supplying a lighting plant with power, a lighting plant and use hereof |
07/27/1995 | WO1995020238A1 Compact lamp with adapter |
07/27/1995 | DE4401823A1 Electric load control device e.g. for fluorescent light device |
07/27/1995 | DE4401630A1 Gas discharge lamp operable from DC source |
07/26/1995 | EP0664663A1 Variable arc current electronic ballast for fluorescent lamps |
07/26/1995 | EP0664059A1 Protection circuit for electronic systems in general and for an electronic ballast operating discharge lamps in particular |
07/25/1995 | US5436533 Method to operate a high-pressure discharge lamp suitable for horizontal arc position |
07/25/1995 | US5436532 Fluorescent lamp with improved efficiency |
07/25/1995 | US5436529 Control and protection circuit for electronic ballast |
07/25/1995 | US5436527 Circuit for operating a fluorescent lamp |
07/20/1995 | DE4412458A1 Circuit for operating gas discharge lamp |
07/19/1995 | EP0663789A1 Preheat start-up device for fluorescent lamps |
07/19/1995 | EP0663139A1 Electrodeless lamp with bulb rotation |
07/18/1995 | US5434763 Headlight for motor vehicles |
07/18/1995 | US5434481 Electronic ballast for fluorescent lamps |
07/18/1995 | US5434480 Electronic device for powering a gas discharge road from a low frequency source |
07/18/1995 | US5434479 Full-bridge inverter for discharge lamp lighting device with varied transistor zero voltage period |
07/18/1995 | US5434478 Electronic ballast for transilluminators and crosslinkers |
07/18/1995 | US5434477 Circuit for powering a fluorescent lamp having a transistor common to both inverter and the boost converter and method for operating such a circuit |
07/18/1995 | US5434476 Circuitry for operating fluorescent lamps with no stroboscopic effects |
07/18/1995 | US5434474 Lighting apparatus for discharge lamp |
07/12/1995 | EP0662277A1 Clocked current supply circuit. |
07/12/1995 | EP0526634B1 Indirect storage capacitor voltage sensing means for a flyback type dc-to-dc converter |
07/12/1995 | CN2203519Y High-tension ballast for neon light |
07/11/1995 | US5432410 Electronic flashing device having a specific type of main capacitor sensing circuit |
07/11/1995 | US5432409 Electronic ballast with parallel-tuned output circuit |
07/11/1995 | US5432406 An aircraft |
07/06/1995 | DE4442658A1 Electrical circuit for vehicle HV gas discharge lamp |
07/05/1995 | EP0661911A1 Method for starting gasconducting lamp and lamp for carrying out the method |
07/05/1995 | EP0660994A1 Device for igniting gas discharge lamps. |
07/05/1995 | CN2203017Y Universal starter for fluorescent lamp |
07/05/1995 | CN2203016Y Recovering circuit device for waste and old fluorescent lamp |
07/05/1995 | CN2203015Y Instantaneous ballast for fluorescent lamp |
07/05/1995 | CN2203014Y Noiseless energy-saving ballast |
07/05/1995 | CN2203013Y Auxiliary radiation electronic ballast |
07/05/1995 | CN2202984Y Universal electronic socket for fluorescent lamp |
07/05/1995 | CN1104828A Zero voltage switching controller of resonance mode converter and electronic ballast using the same |
07/05/1995 | CN1104742A External electronic ballast for fluorescent tube |
07/05/1995 | CA2112783A1 Gas conducting lamp |
07/04/1995 | US5430638 Low noise type converter with complementary transistors |
07/04/1995 | US5430635 High power factor electronic transformer system for gaseous discharge tubes |
07/04/1995 | US5430354 HID lamp and auxiliary lamp ballast using a single multiple function switch |
06/29/1995 | CA2139027A1 Circuit arrangement |
06/28/1995 | EP0660375A2 Electrodeless fluorescent lamp |
06/28/1995 | CN2202389Y Fluorescent colour-changing light |