| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 07/28/1993 | EP0552687A1 Electronic starter for fluorescent lamps |
| 07/28/1993 | CN2139339Y Hybrid-type light-regulating energy-saving lamp |
| 07/28/1993 | CN2139338Y Electronic ballast for fluorescent lamp |
| 07/27/1993 | US5231333 Switching excitation supply for gas discharge tubes having means for eliminating the bubble effect |
| 07/27/1993 | US5230792 Ultraviolet water purification system with variable intensity control |
| 07/21/1993 | EP0551679A1 Electrodeless low-pressure discharge lamp |
| 07/21/1993 | EP0551474A1 Control circuit |
| 07/21/1993 | CN2138879Y Electronic starter of daylight lamp |
| 07/21/1993 | CN2138878Y Improved day-light lamp |
| 07/21/1993 | CN2138877Y Durable starter of day-light lamp |
| 07/21/1993 | CN2138839Y Three phase low flashing degree high photoeffect fluorescent lamp |
| 07/20/1993 | US5229927 Self-symmetrizing and self-oscillating half-bridge power inverter |
| 07/20/1993 | US5229690 Apparatus for operating discharge lamps utilizing a capacitor and charging circuit |
| 07/14/1993 | EP0550985A1 High intensity discharge lamp and excitation coil configuration |
| 07/14/1993 | EP0550928A1 High-pressure discharge lamp |
| 07/14/1993 | CN2138382Y Durable energy saving fluorescent lamp ballast |
| 07/14/1993 | CN2138381Y Start failure protector of electronic ballast lamp |
| 07/14/1993 | CN2138380Y Electronic starter |
| 07/13/1993 | US5227698 Microwave lamp with rotating field |
| 07/10/1993 | CA2085726A1 High intensity discharge lamp and excitation coil configuration |
| 07/08/1993 | WO1993013453A1 Controller for photographic lighting |
| 07/07/1993 | EP0327602B1 Apparatus and method for forming segmented luminosity in gas discharge tubes |
| 07/07/1993 | CN2137850Y Quick soft-start ballast for fluorescent lamp |
| 07/06/1993 | US5225742 Solid state ballast for high intensity discharge lamps |
| 07/06/1993 | US5225741 Electronic ballast and power controller |
| 06/30/1993 | EP0548263A1 High intensity lamp |
| 06/30/1993 | CN2137418Y Service-life-lengthening fast starter for fluorescent lamp |
| 06/29/1993 | US5223767 Low harmonic compact fluorescent lamp ballast |
| 06/29/1993 | CA1319735C Frequency modulation ballast circuit |
| 06/24/1993 | WO1993012631A1 Circuit for operating one or more low-pressure discharge lamps |
| 06/24/1993 | WO1993012630A1 Device for operating a gas-discharge lamp |
| 06/24/1993 | DE4219958C1 Ballast circuit for discharge lamp - uses phase gate control to short out electrodes for interval in each half cycle, depending on brightness |
| 06/24/1993 | DE4141587A1 Motor vehicle headlamp with conductive track around sleeve - is safeguarded by automatic disconnection of high=voltage supply to discharge lamp when sleeve is broken |
| 06/24/1993 | CA2082713A1 Self-extinguishing gas probe starter for an electrodeless high intensity discharge lamp |
| 06/23/1993 | EP0547674A1 Circuit arrangement for eliminating the bubble effect |
| 06/23/1993 | CN2137069Y Compensating capacity type electronic starter for fluorescent lamp |
| 06/23/1993 | CN2137068Y Ballast starter for hectowatt fluorescent lamp |
| 06/23/1993 | CN2136993Y High-pressure mercury lamp stepless light-regulating controller for blueprint machine |
| 06/23/1993 | CN1073556A Frequency-modulated converter with a series parallel resonance |
| 06/22/1993 | US5221942 Controlling charging of a flash device |
| 06/22/1993 | US5221877 Power reduction control for inductive lighting installation |
| 06/22/1993 | CA1319391C Method and apparatus for driving neon tube to form luminous bubbles and controlling the movement thereof |
| 06/17/1993 | DE4241911A1 Cooling system for plasma discharge lamp stimulated by microwaves - uses jets to provide cooling air stream directed onto lamp flask during simultaneous rotation |
| 06/17/1993 | DE4220291C1 Ballast circuit for fluorescent lamp with dimmer - includes source supplying brightness signal for control stage for transistor switch bridging lamp electrodes |
| 06/17/1993 | DE4140766A1 Portable battery-operated fluorescent lamp incorporating bias circuit - housed directly in lamp socket and supplied from battery with energy reduction for pre-heating phase |
| 06/17/1993 | DE4140557A1 Schaltungsanordnung zum betrieb einer oder mehrerer niederdruckentladungslampen Circuit arrangement for operating one or more low-pressure discharge lamps |
| 06/16/1993 | EP0547006A1 Self-oscillating circuit for driving a gas discharge lamp, particularly for use on board a motor vehicle |
| 06/16/1993 | EP0546774A2 Ultraviolet light apparatus |
| 06/16/1993 | CN2136572Y Combined lamp |
| 06/16/1993 | CN2136571Y 电子镇流器 Electronic Ballast |
| 06/16/1993 | CN1021278C Time delay initialization circuit |
| 06/16/1993 | CN1021277C Continuously light-adjustable fluorescent lamp circuit with high reliability |
| 06/16/1993 | CN1021276C Electrode type fluorescent lamp |
| 06/15/1993 | US5220250 Fluorescent lamp lighting arrangement for "smart" buildings |
| 06/15/1993 | US5220249 Flat type fluorescent lamp and method of lighting |
| 06/15/1993 | US5220248 Fluorescent-lamp protection device in an electronic instant starter assembly |
| 06/15/1993 | US5220247 Circuit for driving a gas discharge lamp load |
| 06/09/1993 | EP0544998A2 Circuit for starting and driving high-pressure electric discharge lamps |
| 06/09/1993 | EP0466749B1 Fluorescent lamp |
| 06/09/1993 | CN2135899Y Universal energy-saving ballast for fluorescent lamp |
| 06/09/1993 | CN2135898Y Ac fluorescent ballast |
| 06/09/1993 | CN2135897Y Long life fluorescent lamp |
| 06/09/1993 | CN2135896Y Fluorescent lamp energy-saving starter |
| 06/09/1993 | CN2135895Y 电子荧光灯 Electronic fluorescent |
| 06/09/1993 | CN2135894Y High-effective multi-function fluorescent lamp starter ballast device |
| 06/09/1993 | CN2135829Y Quick starting pullswitch for double fluorescent lamp |
| 06/08/1993 | US5218398 Exposure amount indicator |
| 06/08/1993 | US5218272 Solid state electronic ballast system for fluorescent lamps |
| 06/02/1993 | EP0396674B1 Arc lamp stabilization |
| 06/02/1993 | CN2135228Y Stepless light-controlling electronic ballast for fluorescent lamp |
| 06/02/1993 | CN2135227Y Electronic glow starter for fluorescent lamp |
| 06/02/1993 | CN2135226Y Direct-insert fluorescent lamp glow starter |
| 06/01/1993 | US5216333 Step-dimming magnetic regulator for discharge lamps |
| 06/01/1993 | US5216332 Magnetic-electronic ballast for fluorescent lamps |
| 05/28/1993 | CA2059016A1 Electronic ballast |
| 05/27/1993 | WO1993010649A1 Circuit containing symmetrically-driven coil for energizing electrodeless lamp |
| 05/27/1993 | DE4138646A1 Full or partial load selection circuit for multi-filament room light - uses repetitive operation of standard on-off switch to provide voltage evaluated to select required load setting |
| 05/26/1993 | EP0543436A1 Circuit arrangement |
| 05/26/1993 | CN2134770Y Safety and long-life starter of fluorescent lamp |
| 05/26/1993 | CN2134769Y Electronic starter of fluorescent lamp |
| 05/26/1993 | CN2134584Y Multipurpose neon lamp decoration |
| 05/26/1993 | CN1072556A Timed power saving device |
| 05/25/1993 | US5214357 Low-loss l-c drive circuit for an electrodeless high intensity discharge lamp |
| 05/25/1993 | US5214356 Dimmable fluorescent lamp ballast |
| 05/25/1993 | US5214355 Instant-start electronic ballast |
| 05/25/1993 | US5214352 Light dimming system for emergency operation |
| 05/25/1993 | CA1318345C Ignition device for a gas discharge lamp |
| 05/23/1993 | CA2083011A1 Low harmonic compact fluorescent lamp ballast |
| 05/19/1993 | EP0542503A1 Drive circuit for an arc lamp |
| 05/19/1993 | EP0542425A1 Step-dimming magnetic regulator for discharge lamps |
| 05/19/1993 | EP0541909A1 Discharge lamp driving circuit |
| 05/19/1993 | EP0541908A1 Circuit for operating one or several low pressure discharge lamps |
| 05/19/1993 | CN2134030Y Electronic starting circuit apparatus for multi-tube section-changing type fluorescent lamp |
| 05/19/1993 | CN2134026Y Colour-changing discharging lamp |
| 05/19/1993 | CN2134025Y Quick-starting ballast for fluorescent lamp |
| 05/19/1993 | CN2134024Y Capacitive energy-saving fluorescent lamp ballast |
| 05/19/1993 | CN2134023Y Resonant starting ballast |
| 05/18/1993 | US5212428 Lighting circuit for vehicular discharge lamp |
| 05/18/1993 | US5212427 Electronic lamp ballast dimming control means employing pulse width control |
| 05/15/1993 | CA2080156A1 Low-loss l-c drive circuit for an electrodeless high intensity discharge lamp |