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)
11/1999
11/23/1999US5990633 High-pressure discharge lamp having decoupled ignition and load circuits
11/23/1999US5990632 Excitation circuit for an electrodeless lamp including a pulsed power source
11/23/1999US5990631 Stroboscope circuit controlling dimmer operation
11/23/1999US5990627 Hot relight system for electrodeless high intensity discharge lamps
11/23/1999US5990626 Lighting unit, low-pressure mercury discharge lamp, supply unit, and combined packaging
11/18/1999WO1999059383A1 Dimmer for fluorescent lamps
11/17/1999EP0956743A1 Magnetic feedback ballast circuit for fluorescent lamp
11/17/1999EP0956742A1 Electronic ballast with lamp current valley-fill power factor correction
11/17/1999CN1235708A Control circuit and method for piezoelectric transformer
11/17/1999CN1235507A Method and device for heating cathode fluorescent tube
11/17/1999CN1235506A Method and device for regulating brightness of cathode fluorescent tube
11/17/1999CN1046604C Multi-resonant inverter
11/16/1999US5987261 Strobe device
11/16/1999US5986901 Power factor correction circuit for a power supply
11/16/1999US5986413 Reliable ignition circuit for a high pressure discharge lamp
11/16/1999US5986412 Single ballast for powering plural high intensity discharge lamps
11/16/1999US5986411 IC for implementing the function of a DIAC diode
11/16/1999US5986410 Integrated circuit for use in a ballast circuit for a gas discharge lamp
11/16/1999US5986408 Discharge lamp with heating electrode circuit
11/11/1999WO1999057749A2 Cold cathode fluorescent lamp and display
11/11/1999DE19820615A1 Energy-saving lamp regulation method
11/11/1999DE19816815C1 Vorschaltgerät zum Betrieb einer Mehrzahl von Entladungslampen Ballast for operating a plurality of discharge lamps,
11/10/1999EP0955794A2 High frequency electronic control circuit for fluorescent lamps
11/10/1999EP0955793A2 Discharge lamp apparatus
11/10/1999EP0954950A1 Overheating protection device for a control device in gas discharge lamps
11/10/1999CN2348539Y Integrated fluorescent lamp ballast
11/10/1999CN2348538Y Preheating starter for daylight lamp
11/10/1999CN1234959A Circuit arrangement
11/10/1999CN1234958A Process for producing voltage pulse sequences and circuit assembly therefor
11/10/1999CN1234957A Method and device for producing series of impulse voltages to operate discharge lamps and circuit device thereof
11/10/1999CN1234956A Electronic ballst
11/10/1999CN1234720A Discharge-lamp control apparatus
11/09/1999US5982159 Dimmable, single stage fluorescent lamp
11/09/1999US5982113 Electronic ballast producing voltage having trapezoidal envelope for instant start lamps
11/09/1999US5982112 Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like
11/09/1999US5982111 Fluorescent lamp ballast having a resonant output stage using a split resonating inductor
11/09/1999US5982110 Compact fluorescent lamp with overcurrent protection
11/09/1999US5982109 Electronic ballast with fault-protected series resonant output circuit
11/09/1999US5982108 DC/AC converter for a discharge lamp having a DC offset at the switching element to reduce power loss
11/09/1999US5982107 Drive circuit for a power-saving lamp
11/09/1999US5982106 Self-protected series resonant electronic energy converter
11/05/1999CA2254574A1 Blue light electrodeless high intensity discharge lamp system
11/04/1999WO1999056506A1 Circuit configuration for operating at least one discharge lamp
11/04/1999WO1999056505A1 Safety control circuit for detecting the removal of lamps from a ballast and reducing the through-lamp leakage currents
11/04/1999DE19819671A1 Circuit for protecting fluorescent lamps and electronic starter
11/04/1999DE19819027A1 Schaltungsanordnung zum Betrieb mindestens einer Entladungslampe Circuit arrangement for operating at least a discharge lamp
11/04/1999DE19817508A1 Starter for gas discharge fluorescence lamp with preheatable electrodes for determining fault condition of starter
11/04/1999DE19816965A1 Electronic starter for fluorescent lamps with mains rectifier and storage capacitor connected with operating voltage of inverter across commuting diode
11/04/1999CA2295172A1 Circuit arrangement for operating at least one discharge lamp
11/03/1999EP0954207A2 Self ballasted fluorescent lamp and lighting fixture
11/03/1999CN2347335Y Multi-sensing high voltage sodium lamp ballast
11/03/1999CN2347334Y Special switch for fluorescent lamp
11/03/1999CN2347333Y 电子镇流器 Electronic Ballast
11/02/1999US5978196 Control system for thermal protection of high wattage lighting
11/02/1999US5977725 Resonance type power converter unit, lighting apparatus for illumination using the same and method for control of the converter unit and lighting apparatus
11/02/1999US5977723 Ballast circuit for fluorescent lamp
11/02/1999US5977722 Device for applying particular voltage waveform for operating a discharge lamp
11/02/1999US5977721 Controlled power-factor-corrected ballast
11/02/1999US5977715 Handheld atmospheric pressure glow discharge plasma source
11/02/1999US5977712 Inductive tuners for microwave driven discharge lamps
10/1999
10/28/1999WO1999055125A1 Dimming ballast and drive method for lamps using a frequency controlled, loosely-coupled transformer
10/28/1999WO1999055124A1 Method for operating a gaseous discharge lamp and system for carrying out such a method
10/28/1999WO1999055123A1 Starter circuit
10/28/1999WO1999054907A1 Device to optimize the generation of visible light produced by the influence of an electric field (e) on the ultraviolet radiation. the device is applicable to mercury arc vapor lamps and/or fluorescent tubes
10/27/1999EP0951806A1 Circuit arrangement
10/27/1999EP0951730A1 Illumination unit and liquid crystal display device
10/27/1999CN2346138Y Fluorescent lamp electronic ballast with wide working voltage
10/27/1999CN2346137Y Fluorescent lamp starter
10/27/1999CN2346136Y Two-purpose switch
10/27/1999CN2346135Y Preheat energy-saving ballast
10/27/1999CN1046025C Luminating equipment with adjustable colour temperature
10/26/1999US5974267 Timer-controlled optical data recorder device for lens-fitted photo film unit
10/26/1999US5973943 Non zero-voltage switching protection circuit
10/26/1999US5973458 Sequential feedback control system for an electronic ballast
10/26/1999US5973457 Lighting circuit for discharge lamp
10/26/1999US5973455 Electronic ballast with filament cut-out
10/26/1999US5973437 Scheme for sensing ballast lamp current
10/26/1999US5971630 Camera with lens barrier apparatus
10/26/1999CA2181313C Electronic driver for water treatment system uv bulb
10/21/1999WO1999053731A1 Ballast instant start circuit
10/21/1999WO1999053730A1 Power supply for a difficult to start electrodeless lamp
10/21/1999WO1999053471A1 Resonant square wave fluorescent tube driver
10/21/1999DE19917180A1 Procedure for running mercury vapor discharge radiator lamp
10/21/1999DE19817076A1 Electronic ballast apparatus for fluorescent lamps
10/21/1999DE19816377A1 Generating discharges between two or more electrodes for e.g. a gas laser
10/21/1999CA2328860A1 Ballast instant start circuit
10/21/1999CA2327651A1 Power supply for a difficult to start electrodeless lamp
10/20/1999EP0951204A2 Ballast
10/20/1999EP0681779B1 Single transistor ballast for gas discharge lamps
10/20/1999CN2344943Y Double tube electronic ballast with two high frequency tranformers
10/19/1999US5969484 Electronic ballast
10/19/1999US5969483 Inverter control method for electronic ballasts
10/19/1999US5969482 Circuit arrangement for operating a discharge lamp including real power sensing using a single quadrant multiplier
10/19/1999US5969481 Power supply and electronic ballast with high efficiency voltage converter
10/19/1999CA2012929C Lamp starting circuit
10/14/1999WO1999052330A1 Circuit arrangement
10/14/1999WO1999052329A1 Circuit arrangement
10/14/1999DE19815624A1 Betriebsschaltung für Entladungslampen mit umschaltbaren Betriebszuständen Operating circuit for discharge lamps with selectable operating modes
10/14/1999DE19815623A1 Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen Circuit arrangement for operating low-pressure discharge lamps
10/13/1999EP0949852A2 Discharge lamp operating circuit with selectable operating conditions
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