Patents
Sitemap › H05 - Electric techniques not otherwise provided for › H05B - Electric heating; Electric lighting not otherwise provided for › H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps
Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100)
11/1982
11/24/1982EP0065224A1 Lighting apparatus
11/23/1982US4360762 Rapid starter switch for a fluorescent lamp
11/23/1982CA1136204A1 Electrodeless fluorescent light source
11/17/1982EP0064493A1 Device for controlling discharge lamps for optical scanning.
11/16/1982US4359669 Lamp modulating circuitry
11/16/1982US4359668 Method and apparatus for igniting electrodeless discharge lamp
11/16/1982CA1135786A1 Starting and operating apparatus for high-pressure sodium lamps
11/16/1982CA1135785A1 Unitary ballast structure for operating four fluorescent lamps
11/11/1982WO1982003913A1 Pulse light stabilization for color spectrophotometric instrumentation
11/09/1982US4358717 Direct current power source for an electric discharge lamp
11/09/1982US4358716 Adjustable electrical power control for gas discharge lamps and the like
11/09/1982US4358713 Brightness control device for light emitting display of electronic meter
11/09/1982US4358712 Discharge lamp ballast
11/09/1982US4358711 Circuit arrangement for starting and operating a gas- and/or vapor discharge lamp
11/09/1982US4358710 Fluorescent light unit with dimmable light level
11/09/1982US4358709 Fluorescent light unit with dual light levels
11/09/1982US4358701 Discharge lamps having internal starting aid capacitively coupled to one of the electrodes
11/09/1982CA1135423A1 Starting circuit for gaseous discharge lamps
11/09/1982CA1135334A1 High efficiency push-pull inverters
11/03/1982EP0063974A1 Device providing a regulated alternating voltage source for a power supply from a mains alternating current source
11/03/1982EP0063796A1 Pulse injection starting for high intensity discharge metal halide lamps
11/02/1982CA1134644A1 Multispectral light detection system
10/1982
10/28/1982WO1982003744A1 Device for the supply of at least one fluorescent tube
10/27/1982EP0063507A1 Electronic starter for fluorescent lamps comprising a time delay circuit cooperating with an overvoltage circuit and a preheating circuit
10/27/1982EP0063284A1 Supply circuit for at least one fluorescent lamp
10/27/1982EP0063168A1 High pressure discharge lamp apparatus
10/26/1982US4356433 HID Lamp power supply
10/26/1982US4356432 Solid state power switch for gas discharge lamps
10/19/1982US4355265 Discharge lamp starting and operating circuit
10/19/1982US4355264 Starter circuit for discharge lamp
10/19/1982US4354750 Flash unit having a flash output control device
10/14/1982WO1982003521A1 Fluorescent lamp lighting device
10/13/1982EP0062276A1 Ballast circuit for the operation of low-pressure discharge lamps
10/13/1982EP0062275A1 Ballast circuit for the operation of low-pressure discharge lamps
10/13/1982EP0062269A1 Method and circuit for operating a low-pressure discharge lamp
10/13/1982EP0062172A1 Endoscope apparatus
10/12/1982US4354172 System of generating synchronizing signals in a navigational light group
10/12/1982US4354141 Electric flash device for camera
10/12/1982CA1133583A1 Frequency sensitive switching circuit
10/12/1982CA1133567A1 Electromagnetic discharge apparatus with double-ended power coupling
10/06/1982EP0061796A1 Electric device comprising at least one low-pressure mercury vapour discharge tube
10/06/1982EP0061744A2 Transistor inverter device
10/06/1982EP0061730A2 Transistor inverter device
10/05/1982US4353116 Direct current to alternating current converter
10/05/1982US4353012 Pulse injection starting for high intensity discharge metal halide lamps
10/05/1982US4353011 Hot cathode discharge lamp lighting device
10/05/1982US4353010 Transistor drive scheme for fluorscent lamp ballast
10/05/1982US4353009 Dimming circuit for an electronic ballast
10/05/1982US4353007 Discharge lamp unit including integral ballast
10/05/1982CA1133055A1 Frequency sensitive switching circuit
10/05/1982CA1133051A1 Process and apparatus for charging a capacitor and application of the process
10/05/1982CA1133041A1 Radioactive starting aids for electrodeless light sources
09/1982
09/30/1982WO1982003307A1 Installation for regulating the brightness of a fluorescent lamp
09/29/1982EP0061098A1 Endoscope apparatus
09/28/1982US4352045 Energy conservation system using current control
09/28/1982US4351600 Flash output control failure warning device of an automatic flash output control speed light
09/22/1982EP0060665A2 High pressure metal vapor discharge lamp
09/22/1982EP0060458A2 Device for regulating the light intensity of a fluorescent lamp
09/22/1982EP0060292A1 Circuit for the activation of gas discharge lamps
09/21/1982US4350935 Gas discharge lamp control
09/21/1982US4350934 Discharge device ballast component which provides both voltage transformation and variable inductive reactance
09/21/1982US4350933 Two-wire ballast for fluorescent tube dimming
09/21/1982US4350930 Lighting unit
09/21/1982US4350929 Fluorescent lighting device
09/21/1982CA1132198A1 Isolator circuit for use with frequency sensitive switching circuit
09/21/1982CA1132185A1 Energy saving fluorescent lamp
09/21/1982CA1132184A1 Light integrator circuit with built-in anticipation
09/16/1982WO1982003149A1 Device for lighting discharge lamp
09/14/1982US4349863 Emergency lighting system
09/14/1982US4349768 Method for starting and operating a preheat type fluorescent lamp
09/14/1982CA1131693A1 Energy-conserving ilumination system
09/08/1982EP0059552A1 Electronic starter circuit for lamps
09/07/1982US4348615 Discharge lamp operating circuit
09/07/1982US4348614 Non-light producing substitute apparatus for use in place of phosphor excitable lamps
09/07/1982US4348612 Compact fluorescent lamp unit for three-way fluorescent lamp fixture
09/01/1982EP0059064A1 Lamp driver circuits
09/01/1982EP0059053A2 Switched mode power supply
09/01/1982EP0058683A1 Installation for starting a discharge lamp with heated electrodes.
08/1982
08/31/1982US4347462 Discharge lamp lighting device
08/31/1982CA1130852A1 Variable low frequency dimming for high intensity gaseous discharge lamps
08/24/1982US4346332 Frequency shift inverter for variable power control
08/24/1982US4346331 Feedback control system for applying AC power to ballasted lamps
08/24/1982CA1130366A1 Electric arrangement including at least one gas and/or vapour discharge tube
08/18/1982EP0058035A1 Transistor inverter device
08/17/1982US4344684 Automatic photoflash device
08/17/1982US4344680 Photographic devices for controlling flash photography
08/11/1982EP0057616A1 Starting and operating apparatus for fluorescent lamps
08/11/1982EP0057190A1 A feedback control system for applying ac power to ballasted lamps
08/10/1982US4344020 Electronic flash device capable of automatic flash duration adjustment
08/10/1982US4344018 High pressure metal vapor discharge lamp
08/10/1982CA1129485A1 Variable intensity control apparatus for operating a gas discharge lamp
08/10/1982CA1129484A1 High efficiency ballast system for gaseous discharge lamps
08/10/1982CA1129483A1 Converter for supplying discharge lamps, and more generally arc lamps and its application to projectors for such lamps
08/04/1982EP0056889A1 Simplified power source for fluorescent lamps
08/03/1982US4342948 Electric discharge lamp control converter circuits
08/03/1982CA1128991A2 High frequency circuit for operating a high-intensity, gaseous discharge lamp
07/1982
07/28/1982EP0056642A1 Method and circuit for heating, starting and driving or controlling the light current of low pressure gas discharge lamps
07/28/1982EP0056481A2 Transistor inverter device
07/27/1982CA1128606A1 Mixed light arrangement
07/27/1982CA1128605A1 Energy conserving automatic light output system
1 ... 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351