| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 03/05/1992 | WO1992003899A1 Fluorescent tube driver and lighting system |
| 03/05/1992 | WO1992003898A1 System for providing a constant level current to a fluorescent tube |
| 03/05/1992 | DE4128551A1 Stroboscope with external energy source - uses blocking transducer switched network between energy source and flash capacitor |
| 03/04/1992 | EP0473157A2 Low pressure discharge lamp apparatus |
| 03/04/1992 | EP0472614A1 Supply voltage circuit with controllable output power |
| 03/04/1992 | CN2098140U Magnetic control adjustable ballast for fluorescent lamp |
| 03/04/1992 | CN1059254A 电子镇流器 Electronic Ballast |
| 03/04/1992 | CN1059253A High voltage inductive-type illumination transformation device |
| 03/04/1992 | CA2050372A1 Gas discharge tube for compact lamps |
| 03/03/1992 | US5093681 Flash apparatus for switching and selecting emission modes of open and automatic control schemes |
| 03/01/1992 | WO1991006197A1 Power supply for gas discharge tube |
| 02/26/1992 | EP0472265A2 A method of and a device for regulating the luminosity of a gas-discharge lamp, especially a fluorescent lamp |
| 02/26/1992 | EP0471690A1 Location marker |
| 02/26/1992 | CN2097499U Low-voltage starting light-regulating device for fluorescent lamp |
| 02/26/1992 | CN2097497U High-voltage induction lighting changer |
| 02/26/1992 | CN1059065A 电子镇流器 Electronic Ballast |
| 02/26/1992 | CN1059064A Fluorescent light functional extender apparatus |
| 02/25/1992 | CA1296380C Neon tube lighting device |
| 02/20/1992 | DE4126762A1 Discharge lamp arrangement esp. for motor vehicle headlamp - includes relay circuit for both main-beam and dipped headlamps, safeguarding supply circuit against unloaded operation |
| 02/20/1992 | DE4123810A1 Supplementary electronic flash unit for photographic camera - has gating circuit switched between two modes by decision circuit responsive to uncovering of main flash for automatic intensity control |
| 02/19/1992 | EP0471332A1 Circuit assembly for operating a fluorescent lamp |
| 02/19/1992 | EP0471331A1 Circuit assembly for operating a fluorescent lamp |
| 02/19/1992 | EP0471228A1 Starter for fluorescent lamps |
| 02/19/1992 | EP0471215A1 Remote control of fluorescent lamp ballast |
| 02/19/1992 | CN2096862U Electronic ballast for fluorescent lamp |
| 02/19/1992 | CN2096861U Electronic ballast with watt adjustable |
| 02/19/1992 | CN1058866A Feed device of converter having no harmonic distortion |
| 02/19/1992 | CN1015593B Dc-ac converter for igniting and supplying gas discharge lamp |
| 02/19/1992 | CN1015592B Electronic equipment for control of fluorescent lamps |
| 02/19/1992 | CN1015591B Switching arrangement |
| 02/19/1992 | CN1015590B Energizing arrangement for discharge lamp |
| 02/18/1992 | US5089925 Protection device for electronic circuit |
| 02/18/1992 | US5089753 Arrangement for predicting failure in fluorescent lamp systems |
| 02/18/1992 | US5089752 High frequency luminous tube power supply with ground fault protection |
| 02/18/1992 | US5089751 Fluorescent lamp controllers with dimming control |
| 02/18/1992 | US5089748 Photo-feedback drive system |
| 02/12/1992 | EP0470453A1 Electronic starting switch with repetition circuit |
| 02/12/1992 | CN2096197U Section light regulating electronic fluorescent lamp |
| 02/12/1992 | CN2096196U Plug-in type micro flash light synchronizer |
| 02/12/1992 | CN2096193U Electronic starter for day light lamp |
| 02/12/1992 | CN2096192U High pressure pulse power saving ballast |
| 02/12/1992 | CN2096191U General starter with protective resistance |
| 02/12/1992 | CN2096190U Duplex pull cord switch for 4-40 w daylight lamp |
| 02/12/1992 | CN2096189U Inpedance ballast for fluorescent lamp |
| 02/12/1992 | CN2096188U Protector for electronic fluoressent lamp |
| 02/11/1992 | US5087862 Discharge lamp lighting apparatus for controlling voltage of switching transistor by raising starting voltage |
| 02/11/1992 | US5087861 Discharge lamp life and lamp lumen life-extender module, circuitry, and methodology |
| 02/11/1992 | US5087860 Power supply circuit for gas discharge tube |
| 02/11/1992 | US5087859 Switching arrangement for high pressure discharge lamp |
| 02/11/1992 | CA1295656C Electronic dimmer control for vacuum fluorescent display devices |
| 02/06/1992 | WO1992002113A1 Starter device for turning a discharge lamp on |
| 02/04/1992 | US5086249 Compact discharge lamp unit and method for manufacturing same |
| 01/29/1992 | CN2094851U High-efficient energy-saving two-tube light-adjustable fluorescent lamp |
| 01/29/1992 | CN2094849U Electronic fluorescent lamp with protective resistant |
| 01/29/1992 | CN1058314A Stable igniting device for electronic lamp |
| 01/28/1992 | US5084801 Liquid crystal variable capacitor and high intensity discharge lamp ballast employing same |
| 01/28/1992 | US5084655 Circuit arrangement suitable for igniting a high-pressure discharge lamp |
| 01/28/1992 | US5084654 Starting aid for an electrodeless high intensity discharge lamp |
| 01/28/1992 | US5084653 Power-line-isolated dimmable electronic ballast |
| 01/28/1992 | US5084652 Fluorescent lamp lighting apparatus |
| 01/28/1992 | CA1295007C Fluorescent lamp system |
| 01/26/1992 | CA2047505A1 Lamp ignitor with automatic shut-off feature |
| 01/23/1992 | WO1992001334A1 Magnetic structure and power converter for light sources |
| 01/22/1992 | EP0467612A2 Protective coating for high-intensity metal halide discharge lamps |
| 01/22/1992 | EP0467611A2 Use of silicon to extend useful life of metal halide discharge lamps |
| 01/22/1992 | EP0467610A2 Protective beryllium oxide coating for high-intensity discharge lamps |
| 01/22/1992 | EP0466749A1 Fluorescent lamp. |
| 01/22/1992 | CN2094173U Rectifier for extrahigh voltage globular short-arc xenon lamps |
| 01/22/1992 | CN2094172U Solid-state glow starter for daylight lamps |
| 01/22/1992 | CN2093955U Energy-saving emergency lamp |
| 01/21/1992 | US5083065 Lighting device for electric discharge lamp |
| 01/21/1992 | US5083062 Flash device |
| 01/21/1992 | CA1294666C Ignitor disabler |
| 01/21/1992 | CA1294665C Circuit arrangement for operating high-pressure gas discharge lamps |
| 01/19/1992 | WO1992002035A1 Variable color lamp |
| 01/19/1992 | CA2066604A1 Variable color lamp |
| 01/15/1992 | EP0466245A2 Circuit arrangement |
| 01/15/1992 | EP0465735A1 Deuterium lamp voltage supply means |
| 01/15/1992 | EP0396621A4 Fluorescent dimming ballast utilizing a resonant sine wave power converter |
| 01/15/1992 | CN2093500U Life-increasing energy-saving controller for lighting lamp |
| 01/15/1992 | CN2093499U Low voltage energy-saving life-incrasing quick starter for fluorescent lamp |
| 01/14/1992 | US5081401 Driver circuit for a plurality of gas discharge lamps |
| 01/14/1992 | US5081399 Power supply systems for neon lights |
| 01/14/1992 | US5081395 Fluorescent lamp having three electrodes for starting at low temperatures |
| 01/10/1992 | CA2046367A1 Circuit arrangement |
| 01/08/1992 | EP0464777A1 Circuit arrangement for approximating a non-linear transfer function |
| 01/08/1992 | CN2092845U Dc type ballast of fluorescent light with power saving function |
| 01/08/1992 | CN2092844U Electronic ballast of fluorescent light |
| 01/08/1992 | CN1057750A Fluorescent lamp controlling arrangement |
| 01/08/1992 | CA2042145A1 Piezoelectrically actuated variable capacitor |
| 01/07/1992 | US5079485 Ballast for supplying a plurality of discharge lamps |
| 01/07/1992 | US5078476 Automatic backlight on/off control apparatus for liquid crystal display television |
| 01/07/1992 | US5078039 Microprocessor controlled lamp flashing system with cooldown protection |
| 01/07/1992 | CA2046153A1 High frequency oscillator-inverter with improved regenerative power supply |
| 01/02/1992 | EP0463687A2 Power control circuit arrangement with low feedback to mains |
| 01/02/1992 | EP0463387A2 Power supply for a pre-heating device of a pre-heated display, especially of a fluorescent display |
| 01/02/1992 | DE4020517A1 DC supply circuit for gas discharge lamp - uses choke coil infront of full-wave rectifier and output smoothing capacitor |
| 01/01/1992 | CN2092175U Device for stablizing glow of fluorescent lamp |
| 12/31/1991 | CA1293767C Programmable multicircuit wall-mounted controller |
| 12/31/1991 | CA1293766C Discharge lamp driving circuit |