| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 05/05/1992 | US5111233 Electronic flashing device |
| 05/05/1992 | US5111118 Fluorescent lamp controllers |
| 05/05/1992 | US5111116 Illuminating a photographed object |
| 05/05/1992 | US5111115 Fluorescent lamp controller |
| 05/05/1992 | US5111114 Fluorescent lamp light ballast system |
| 05/05/1992 | CA1300216C Ignition circuit for high pressure arc discharge lamps |
| 05/05/1992 | CA1300106C Illuminated aerial marker |
| 04/30/1992 | DE4033973A1 Switching equipment for operation of fluorescent lamp - generates DC by rectification of output from mains fed HF circuit followed by reversing switch |
| 04/29/1992 | EP0483082A2 Device for controlling a gas-discharge lamp for use in a motor vehicle |
| 04/29/1992 | EP0482705A2 Circuit arrangement |
| 04/29/1992 | EP0482373A1 Discharge lamp lighting apparatus |
| 04/29/1992 | CN2103230U Fluorescent lamp or lighting apparatus with changable period and driven by d. c. electrode |
| 04/29/1992 | CN2103229U Low-tension sodium lamp electronic ballast |
| 04/28/1992 | US5109328 Push-pull inverter employing current feedback |
| 04/28/1992 | US5109248 Variable color-output strobe for photographic apparatus |
| 04/22/1992 | EP0481550A1 Circuit arrangement |
| 04/22/1992 | EP0481409A1 Switching unit for fluorescent lamps |
| 04/22/1992 | EP0323992B1 Power supply circuit for an electric discharge lamp |
| 04/22/1992 | EP0291526B1 Programmable multicircuit wall-mounted controller |
| 04/22/1992 | CN2102595U Sound controlled stroboflash lamp |
| 04/22/1992 | CN1060569A Circuit arrangement |
| 04/22/1992 | CN1060568A Ballast for fast glow starting fluorescent lamp |
| 04/21/1992 | US5107405 Motor vehicle headlamp |
| 04/21/1992 | US5107292 Electronic flash unit |
| 04/21/1992 | US5107186 Converter and discharge-lamp operating apparatus using the converter |
| 04/21/1992 | US5107185 Shielded starting coil for an electrodeless high intensity discharge lamp |
| 04/21/1992 | US5107184 Remote control of fluorescent lamp ballast using power flow interruption coding with means to maintain filament voltage substantially constant as the lamp voltage decreases |
| 04/21/1992 | US5107183 Discharging method and small fluorescent lamp using the discharging method |
| 04/21/1992 | US5107180 System for operating a portable lamp |
| 04/18/1992 | CA2053354A1 Circuit arrangement |
| 04/16/1992 | DE4032664A1 Operating circuitry for low pressure gas discharge lamp - includes PTC resistance in parallel with choke coil for reduced power warm starting |
| 04/16/1992 | DE4032329A1 HF gas discharge lamp ballast circuit - has storage capacitor with low capacitance value between full-wave rectifier and chopper stage |
| 04/15/1992 | EP0480510A2 Circuit arrangement |
| 04/14/1992 | US5105127 Dimming method and device for fluorescent lamps used for backlighting of liquid crystal screens |
| 04/14/1992 | US5105126 Brightness control for flashing xenon lamp |
| 04/14/1992 | US5105125 Device for alternating bulb polarities of a DC lighting system |
| 04/08/1992 | EP0479352A1 Converter for discharge lamps with dimming means |
| 04/08/1992 | EP0479351A2 Adaptative starting device |
| 04/08/1992 | EP0479196A1 Power supply circuit |
| 04/07/1992 | US5103143 Process and apparatus for starting a high pressure gas discharge lamp for vehicles |
| 04/07/1992 | US5103142 Circuit arrangement for ignition and operation of a high pressure gas discharge lamp for motor vehicles |
| 04/07/1992 | US5103141 Switching arrangement for increasing the white life of a high pressure sodium lamp |
| 04/07/1992 | US5103140 Starting circuit for an electrodeless high intensity discharge lamp |
| 04/07/1992 | US5103139 Lamp starting and operating procedure in electronic ballast |
| 04/07/1992 | US5103138 Switching excitation supply for gas discharge tubes having means for eliminating the bubble effect |
| 04/07/1992 | US5103137 Anti-cycling device for high pressure sodium lamps |
| 04/07/1992 | CA1298614C Power supply |
| 04/01/1992 | EP0478388A1 High frequency luminous tube power supply with ground fault protection |
| 04/01/1992 | EP0478342A2 A fluorescent lamp assembly |
| 04/01/1992 | EP0478306A1 Apparatus for operating a discharge lamp |
| 04/01/1992 | EP0478054A1 Apparatus for operating discharge lamps |
| 04/01/1992 | EP0477922A1 Apparatus for operating discharge lamp |
| 04/01/1992 | EP0477914A2 High-pressure discharge lamp and lighting method |
| 04/01/1992 | EP0477621A1 A lighting device of discharge lamp |
| 04/01/1992 | EP0477587A1 Power apparatus |
| 04/01/1992 | CN2100718U Power-saving and reusing means of fluorescent lamp |
| 04/01/1992 | CN2100717U Power-saving electronic ballast of fluorescent lamp |
| 04/01/1992 | CN1060005A Serial dual-tube ballast |
| 03/31/1992 | US5101142 Solid-state ballast for fluorescent lamp with multiple dimming |
| 03/31/1992 | US5101140 High-pass T-networks with integral transformer for gaseous discharge lamps |
| 03/31/1992 | CA2052345A1 Power supply circuit |
| 03/31/1992 | CA1298344C High efficacy electrodeless high intensity discharge lamp |
| 03/27/1992 | CA2052443A1 Apparatus for operating discharge lamp |
| 03/25/1992 | EP0476186A1 Photographic exposure apparatus |
| 03/25/1992 | CN2100076U Energy-saving electronic fluorescent lamps and lanterns |
| 03/25/1992 | CN2100075U Glow starter for fluorescent lamp |
| 03/25/1992 | CN2100074U Control starting linkage switch |
| 03/25/1992 | CN1059817A Colour modulation lamp for multi-colour lighting |
| 03/24/1992 | US5099407 Inverter with power factor correction circuit |
| 03/24/1992 | US5099176 Fluorescent lamp ballast operable from two different power supplies |
| 03/24/1992 | CA1297936C Electronic ballast for fluorescent lamps |
| 03/22/1992 | CA2025988A1 Solid state electronic ballast |
| 03/19/1992 | WO1992004809A1 Fluorescent lamp with multiple dimming solid-state ballast |
| 03/19/1992 | WO1992004808A1 Improvements in electronic ballasts |
| 03/19/1992 | DE4029203A1 Arc discharge trigger circuit for aircraft warning lights - includes actuator for switching low-resistance shunt across arc lamp as well as charging storage capacitor |
| 03/18/1992 | EP0475082A1 Microprocessor controlled lamp flashing system |
| 03/18/1992 | CN2099427U Fluorescent lamp with light adjusting, power saving and long live function |
| 03/18/1992 | CN2099426U Igniting apparatus for fluorescent lamp |
| 03/18/1992 | CN2099425U Ballast of fluorescent lamp |
| 03/17/1992 | US5097183 Master-slave half-bridge DC-to-AC switchmode power converter |
| 03/17/1992 | US5097182 Power supply for a gas discharge lamp |
| 03/17/1992 | US5097181 Discharge lamp lighting device having level shift control function |
| 03/17/1992 | US5097177 Glow starter with a faster turn on time for a fluorescent tube |
| 03/14/1992 | WO1992005386A1 High intensity lamp |
| 03/14/1992 | CA2092696A1 High intensity lamp |
| 03/12/1992 | DE4128605A1 Discharge headlamp for motor vehicle - has control circuit inside screenedcompartment behind lamp |
| 03/11/1992 | EP0474316A2 Power supply for microwave discharge light source |
| 03/11/1992 | EP0474315A2 Microwave discharge light source apparatus |
| 03/11/1992 | EP0474065A1 Vessel for compact discharge tubes |
| 03/11/1992 | EP0473679A1 Discharge lamp unit with variable light intensity. |
| 03/11/1992 | EP0248843B1 Simplified gaseous discharge device simmering circuit |
| 03/11/1992 | CN2098783U Electronic ballast with starting protection in absence of lamp |
| 03/11/1992 | CN2098782U Protector for electronic fluorescent lamp |
| 03/10/1992 | US5095336 Temperature control of a fluorescent lamp having a central and two end amalgam patches |
| 03/10/1992 | US5095261 Transient protection circuit for a dc voltage supply |
| 03/10/1992 | US5095253 Fluorescent lighting power controller for optimum energy savings |
| 03/10/1992 | US5095252 System for remote visual inspection employing a stroboscopic light source |
| 03/10/1992 | US5095251 Low voltage DC light apparatus for a neon lamp |
| 03/10/1992 | US5095249 Gas probe starter for an electrodeless high intensity discharge lamp |
| 03/06/1992 | CA2024610A1 4000 v booster |