| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 09/16/1992 | EP0326619B1 Power supply for microwave discharge light source |
| 09/16/1992 | CN2116330U High efficiency electronic ballast |
| 09/16/1992 | CN2116328U Long-service and energy-saving fluorescent lamp controller |
| 09/16/1992 | CN2116327U Starter of fluorescent lamp |
| 09/16/1992 | CN2116326U Electronic starter of fluorescent lamp |
| 09/16/1992 | CN2116279U Long-service and energy-saving electronic fluorescent lamp without filament inside |
| 09/15/1992 | US5148212 Flash control based on calculated required flash energy |
| 09/15/1992 | US5148087 Circuit for driving a gas discharge lamp load |
| 09/15/1992 | US5148086 Means for securing insulation displacement terminals to leads extending from a fluorescent light ballast |
| 09/10/1992 | DE4107147A1 Fluorescent tube control with push=pull transistors - has two decoupled branches, each with tube electrode, inductor, and switching transistor in series |
| 09/09/1992 | EP0502512A1 Starting and operating circuit for arc discharge lamp |
| 09/09/1992 | EP0502489A1 A power supply and control unit for a light system and a lighting unit for the light system |
| 09/09/1992 | EP0502273A2 Discharge lamp and method of operation |
| 09/09/1992 | CN1064385A Electronic starter for daylight lamp |
| 09/08/1992 | WO1992016082A2 Driver circuit for a plurality of gas discharge lamps |
| 09/08/1992 | US5146250 External power source for electronic flash |
| 09/08/1992 | US5146140 Method and apparatus to reduce Hg loss in rf capacitively coupled gas discharges |
| 09/08/1992 | US5146139 Controllable gas discharge lighting system |
| 09/03/1992 | WO1992015185A1 Indirect storage capacitor voltage sensing means for a flyback type dc-to-dc converter |
| 09/03/1992 | WO1992015052A1 Phase-controlled power modulation system |
| 09/02/1992 | CN2114944U Energy-saving photo-controlled fluorescent lamp |
| 09/02/1992 | CN2114942U Improved low-voltage halogen lamp power source |
| 09/02/1992 | CN2114941U Electricity-saving fluorescent lamp ballast |
| 09/02/1992 | CN2114747U Ac and dc energy-saving adjustable fluorescent lamp for emergency |
| 09/02/1992 | CN1064187A Contactless glow starter for fluorescent lamp |
| 09/01/1992 | US5144207 Circuit and method for igniting and operating an arc lamp |
| 09/01/1992 | US5144206 Electrodeless HID lamp coupling structure with integral matching network |
| 09/01/1992 | US5144205 Compact fluorescent lamp dimming system |
| 09/01/1992 | US5144204 Tapped-inductor boost convertor for operating a gas discharge lamp |
| 09/01/1992 | US5144195 Circuit for driving at least one gas discharge lamp |
| 09/01/1992 | CA1307023C Three-way fluorescent lamp device |
| 08/26/1992 | EP0289542B1 Control system for electrical lighting |
| 08/26/1992 | CN2114267U 闪光灯 Flash |
| 08/26/1992 | CN1063987A Fluorescent lamp controller |
| 08/25/1992 | US5142203 Lighting circuit for high-pressure discharge lamp for vehicles |
| 08/25/1992 | US5142202 Starting and operating circuit for arc discharge lamp |
| 08/25/1992 | US5142201 Lamp ballast circuit |
| 08/19/1992 | CN1063791A Method and apparatus with electronic inputs for controlling discharge lamp |
| 08/18/1992 | US5140229 Lighting circuit for vehicular discharge lamp |
| 08/18/1992 | US5140228 Apparatus for regulating the intensity of light emitted by a lamp |
| 08/18/1992 | US5140227 Starting aid for an electrodeless high intensity discharge lamp |
| 08/18/1992 | US5140226 Flashing warning light assembly |
| 08/18/1992 | US5140224 Apparatus for operating discharge lamp |
| 08/18/1992 | US5140201 Gate drive circuit for insulated gate semiconductor device and flash controller using the circuit |
| 08/13/1992 | CA2036168A1 Fluorescent lamp stabilizer circuit device |
| 08/12/1992 | EP0498497A2 Circuit arrangement |
| 08/12/1992 | EP0498090A1 High frequency oscillator-inverter circuit for discharge lamps |
| 08/12/1992 | CN2112921U Fluorescent quick energy-saving starter |
| 08/12/1992 | CN2112920U Fluorescent lamp electronic ballast |
| 08/11/1992 | US5138361 Electronic flash control device employing a plurality of control signals |
| 08/11/1992 | US5138236 Circuit for driving a gas discharge lamp load |
| 08/11/1992 | US5138235 Starting and operating circuit for arc discharge lamp |
| 08/11/1992 | US5138234 Circuit for driving a gas discharge lamp load |
| 08/11/1992 | US5138233 Driver circuit for a plurality of gas discharge lamps |
| 08/11/1992 | US5138231 High pressure metal vapor discharge lamp |
| 08/05/1992 | CN2112244U Self-protecting electronic ballast |
| 08/05/1992 | CN2112243U Electronic ballast set on wall with switch |
| 08/04/1992 | US5136214 Use of silicon to extend useful life of metal halide discharge lamps |
| 08/04/1992 | US5136210 Glow discharge lamp |
| 07/29/1992 | EP0496246A1 Circuit for operating a discharge lamp |
| 07/29/1992 | EP0496040A1 AC Ballast for discharge lamps |
| 07/29/1992 | CN2111614U Double-tube fluorescent lamp |
| 07/29/1992 | CN2111613U Low-voltage starting switch for fluorescent lamp |
| 07/29/1992 | CN1063179A Gas discharge space for compact lamp |
| 07/28/1992 | US5134345 Feedback system for stabilizing the arc discharge of a high intensity discharge lamp |
| 07/28/1992 | US5134344 Ballast circuits for gas discharge lamps |
| 07/28/1992 | CA1305747C Parallel arranged starting circuit for gaseous discharge lamps |
| 07/23/1992 | WO1992012611A1 Low wattage metal halide lamp apparatus |
| 07/23/1992 | DE4100369A1 Operating fluorescent lamps for advertising or information display - periodically switching ionisation phase of individual lamps on or off and maintaining electrode temp. using short circuit phase |
| 07/22/1992 | EP0495571A2 Universal electronic ballast system |
| 07/22/1992 | CN2110975U Multi-tube glow starter for fluorescent lamp |
| 07/22/1992 | CN2110974U Improved paralled double-tube ballast |
| 07/21/1992 | US5132884 High efficiency illumination system |
| 07/21/1992 | US5132870 Ignitor circuit for discharge lamps with novel ballast |
| 07/21/1992 | US5132595 Filment switch for a lamp ballast |
| 07/21/1992 | US5132590 Gas discharge tube capable of lighting in different colors |
| 07/17/1992 | CA2051164A1 Universal electronic ballast system |
| 07/16/1992 | DE4141675A1 Flashlamp operation circuit performing continuous on=off switching - utilises semiconductor switch with photodiode in control circuit monitoring limiting current during discharge of capacitor |
| 07/15/1992 | EP0494310A1 Variable color lamp |
| 07/15/1992 | CN2110336U Fluorescent lamp light adjusting device |
| 07/15/1992 | CN2110335U Capacitance electronic ballast |
| 07/15/1992 | CN2110334U Induction fluorescent lamp ballast |
| 07/15/1992 | CN2110333U Improved non-starter fluorescent lamp universal switch |
| 07/15/1992 | CN2110135U Explosion protection energy-saving lamp |
| 07/15/1992 | CN1062821A Flash lamp synchronous unit |
| 07/14/1992 | US5130738 Electronic flash unit driver by insulated gate bipolar transistor |
| 07/14/1992 | US5130613 Fluorescent lamp arrangement with an integral motion sensor |
| 07/14/1992 | US5130612 Loop applicator for high frequency electrodeless lamps |
| 07/14/1992 | US5130611 Universal electronic ballast system |
| 07/14/1992 | US5130610 Discharge lamp lighting apparatus |
| 07/14/1992 | US5130609 Illuminating device incorporating gas-filled chambers |
| 07/14/1992 | US5130605 Lighting device for fluorescent lamp |
| 07/14/1992 | CA1305211C Signal generating circuit for ballast control of discharge lamps |
| 07/09/1992 | WO1992011742A1 A method of and apparatus for operating an electric discharge lamp |
| 07/09/1992 | WO1992011741A1 Fail-safe uninterruptible lighting system |
| 07/08/1992 | CN2109688U Rapid power saving starter for fluorescent lamp |
| 07/08/1992 | CN2109686U Iron core ballast daylight lamp without starter and filament |
| 07/08/1992 | CN2109685U Fluorescent lamp and incandescent lamp combined lamp |
| 07/08/1992 | CN2109684U General daylight reinforced device |
| 07/08/1992 | CN2109683U Secondary starter |