| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 06/22/1983 | EP0082031A1 Circuit for controlling the light intensity of a fluorescent lamp fed by a direct current |
| 06/22/1983 | EP0081884A2 Circuit arrangement for operating high pressure gas-discharge lamps |
| 06/22/1983 | EP0081863A2 Control apparatus for operating a gas discharge lamp |
| 06/22/1983 | EP0081862A2 Control apparatus for operating a gas discharge lamp |
| 06/21/1983 | US4389596 Photometry power supply for automatic electronic flash |
| 06/21/1983 | CA1148602A1 Photoflash array with selective pairing of lamps |
| 06/21/1983 | CA1148601A1 Photoflash array with selective pairing of lamps and switching of common circuit |
| 06/15/1983 | EP0081285A2 Method and apparatus for controlling illumination from gas discharge lamps |
| 06/14/1983 | US4388566 Passive control network for remote control of load output level |
| 06/14/1983 | US4388565 Control circuit for a discharge lamp |
| 06/14/1983 | US4388564 Energy saving fluorescent lamp circuit |
| 06/14/1983 | US4388563 Solid-state fluorescent lamp ballast |
| 06/14/1983 | US4388562 Electronic ballast circuit |
| 06/14/1983 | US4388561 Apparatus for operating discharge lamps |
| 06/14/1983 | US4388559 Bicycle lighting system |
| 06/14/1983 | US4387976 Light quantity indicating circuit for an electronic flash device |
| 06/08/1983 | EP0080751A2 Electric arrangement for step-wise controlling the luminance of a gas and/or vapour discharge lamp |
| 06/01/1983 | EP0079969A1 Low pressure mercury vapor discharge lamp unit |
| 05/31/1983 | US4386296 Fluorescent light unit with dual light levels |
| 05/26/1983 | WO1983001885A1 Method, supply apparatus and gas discharge lighting device for the simultaneous supply of a plurality of lighting devices from a common supply source |
| 05/24/1983 | US4385347 Power supply |
| 05/24/1983 | US4385262 Method and apparatus for variable current control of a negative resistance device such as a fluorescent lamp |
| 05/24/1983 | US4384776 Charge detection display type electronic flash |
| 05/24/1983 | US4384775 Light supply device for an endoscope |
| 05/18/1983 | EP0078864A1 Transistor inverter device |
| 05/17/1983 | US4384239 Electrical circuit for gaseous discharge lamp |
| 05/17/1983 | US4384238 Electronic strobe flash apparatus for indirect and direct flash |
| 05/17/1983 | US4383758 Copying apparatus |
| 05/11/1983 | EP0078790A2 Electronic ignition circuit for gas discharge lamps |
| 05/11/1983 | EP0078524A2 Discharge lampstarter arrangements |
| 05/10/1983 | US4383288 Adjustable light collector and sampler therefor |
| 05/10/1983 | US4383204 Three-level interface control circuit for electronically ballasted lamp |
| 05/10/1983 | US4383203 Circuit means for efficiently driving an electrodeless discharge lamp |
| 05/10/1983 | US4383202 Flashing florescent lamps |
| 05/04/1983 | EP0077776A1 Pulse light stabilization for color spectrophotometric instrumentation |
| 05/03/1983 | US4382212 One lamp out detect shutdown technique for high frequency, solid state fluorescent lamp ballasts |
| 05/03/1983 | US4382211 Electric flash device |
| 05/03/1983 | US4382210 Ballast circuit for direct current arc lamp |
| 04/28/1983 | WO1983001555A1 Circuit for starting and operating discharge lamps |
| 04/26/1983 | US4381476 Fluorescent lamp instantaneous starting device |
| 04/26/1983 | CA1145388A1 Series sequence fluorescent ballast with multiple lighting levels |
| 04/26/1983 | CA1145387A1 Dimmer circuit for fluorescent lamps |
| 04/19/1983 | US4380719 Electronic device for the starting and a.c. voltage operation of a gas and/or vapor discharge lamp |
| 04/19/1983 | CA1144979A1 High frequency electrodeless lamp having a gapped magnetic core |
| 04/14/1983 | WO1983001313A1 Light dimmer for solid state ballast |
| 04/12/1983 | US4379983 Electric flash device |
| 04/12/1983 | US4379982 Low energy starting aid for high intensity discharge lamps |
| 04/12/1983 | CA1144592A1 Discharge device ballast component which provides both voltage transformation and variable inductive reactance |
| 04/06/1983 | EP0075774A2 Electronic ballast for at least one fluorescent lamp |
| 04/05/1983 | US4379254 Dimmer circuit for fluorescent lamp |
| 04/05/1983 | US4379253 Ornamental lamp and method and apparatus for operation thereof |
| 04/05/1983 | CA1144284A1 Resistor-aided starting of metal halide lamps |
| 04/05/1983 | CA1144283A1 Metal halide lamp for operation with a mercury ballast |
| 04/05/1983 | CA1144226A1 Starting electrodes for solenoidal electric field discharge lamps |
| 04/05/1983 | CA1144225A1 Start winding for solenoidal electric field discharge lamps |
| 04/05/1983 | CA1144224A1 High frequency electrodeless lamp having a gapped magnetic core and method |
| 04/05/1983 | CA1144223A1 Solenoidal electric field lamp with reduced electromagnetic interference |
| 03/30/1983 | EP0075382A1 Power supply for arc lamps |
| 03/30/1983 | EP0075176A2 Electronic ballast for a discharge lamp |
| 03/29/1983 | US4378515 Discharge lamp lighting device for copying machines |
| 03/29/1983 | US4378514 Starting and operating circuit for gaseous discharge lamps |
| 03/29/1983 | US4378513 High pressure discharge lamp apparatus |
| 03/23/1983 | EP0074689A1 Control circuit for a DC-AC converter |
| 03/22/1983 | US4377841 High intensity discharge lighting system |
| 03/22/1983 | US4377774 Electronic flash control device |
| 03/22/1983 | US4377771 Glow-discharge starter |
| 03/15/1983 | US4376912 Electrodeless lamp operating circuit and method |
| 03/15/1983 | US4376911 Circuit system for lighting a discharge lamp or lamps |
| 03/09/1983 | EP0073695A1 Method and apparatus to excite a flashlight |
| 03/09/1983 | EP0073252A1 Device for lighting discharge lamp |
| 03/08/1983 | CA1142343A1 Non-linear dielectric element |
| 03/01/1983 | US4375608 Electronic fluorescent lamp ballast |
| 02/23/1983 | EP0072622A2 Energy conservation system providing current control |
| 02/22/1983 | US4375045 Starting transformer for gas lamps with open secondary |
| 02/17/1983 | WO1983000596A1 Emergency light |
| 02/17/1983 | WO1983000587A1 Converter |
| 02/15/1983 | US4374345 Electronic flash apparatus |
| 02/15/1983 | CA1141426A1 Starting and operating apparatus for high-pressure sodium lamps |
| 02/09/1983 | EP0071346A1 Method and circuit for controlling illumination from a gas discharge lamp |
| 02/08/1983 | USRE31146 Two-wire ballast for fluorescent tube dimming |
| 02/08/1983 | US4373146 Method and circuit for operating discharge lamp |
| 02/01/1983 | US4371812 Light regulation system |
| 01/25/1983 | US4370601 High pressure discharge lamp apparatus |
| 01/25/1983 | US4370600 Two-wire electronic dimming ballast for fluorescent lamps |
| 01/25/1983 | CA1140202A1 Combination flood, spot and flasher lamp unit |
| 01/20/1983 | WO1983000271A1 Line operated fluorescent lamp inverter ballast |
| 01/19/1983 | EP0069967A1 Device for starting fluorescent lamps |
| 01/18/1983 | US4369395 Electronic flash with safety switch feature |
| 01/18/1983 | US4369394 Timer circuit for a stroboscope |
| 01/18/1983 | US4368966 Photographic system including remote controllable flash unit |
| 01/04/1983 | US4367468 D.C. Input shift panel driver circuits-biased inputs |
| 12/22/1982 | EP0067220A1 Plasma charge transfer device |
| 12/15/1982 | EP0067010A1 Methods for operation of programmable signal control circuits |
| 12/15/1982 | EP0066927A1 Method and circuit for operating a high pressure metal vapour discharge lamp |
| 12/15/1982 | EP0066754A1 Electronic mains connection device for a gas-discharge lamp |
| 12/14/1982 | CA1137664A1 Brightness control circuit for a vacuum fluorescent display |
| 12/09/1982 | WO1982004373A1 Low pressure mercury vapor discharge lamp unit |
| 12/08/1982 | EP0066481A1 Electronic supply apparatus for discharge lamps |
| 12/07/1982 | US4362971 Power supply for arc discharge devices |
| 12/01/1982 | EP0065794A1 Electric arrangement for starting and supplying a gas and/or vapour discharge lamp comprising two preheatable electrodes |