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