Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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06/28/1995 | CN2202387Y Pinboard ballast |
06/28/1995 | CN1104314A Luminaire |
06/27/1995 | US5428268 Low frequency square wave electronic ballast for gas discharge |
06/27/1995 | US5428266 Electronic ballast with leakage transformer |
06/27/1995 | US5428265 Processor controlled fluorescent lamp dimmer for aircraft liquid crystal display instruments |
06/27/1995 | US5428264 Electronic ballast with controlled operating voltage |
06/23/1995 | CA2138602A1 Electrodeless fluorescent lamp |
06/22/1995 | WO1995017080A1 Solid state power supply circuit for cold cathode lighting |
06/22/1995 | WO1995017032A1 Clocked current supply |
06/22/1995 | DE4343708A1 Device for simulating TV receiver operation |
06/21/1995 | EP0659037A2 Gas discharge lamp ballast circuit with indicator of ballast operability |
06/21/1995 | EP0659036A1 Rectifier ballast |
06/21/1995 | EP0659035A1 Process for controlling the total illumination in a room and device for such a process |
06/21/1995 | EP0658922A2 Illumination unit; and electrodeless low-pressure discharge lamp, holder, and supply unit suitable for use in the illumination unit |
06/21/1995 | EP0658921A1 Low-pressure mercury discharge lamp |
06/21/1995 | EP0658799A1 Method and system for inspecting an assembly, and electrical inspection apparatus for a flash unit |
06/21/1995 | CN2201768Y Electronic ballast of light regulating neon |
06/21/1995 | CN2201766Y Neon electronic transformer high frequency radiation eliminating device |
06/21/1995 | CN2201765Y Dual output power source converter of fluorescent lamp |
06/20/1995 | US5426350 High frequency transformerless electronics ballast using double inductor-capacitor resonant power conversion for gas discharge lamps |
06/20/1995 | US5426349 Electronic ballast with two-transistor switching device |
06/20/1995 | US5426348 High efficiency ballast for operation of electronic lamps |
06/20/1995 | US5426347 Lighting system with emergency standby feature |
06/20/1995 | US5426346 Gas discharge lamp ballast circuit with reduced parts-count starting circuit |
06/20/1995 | US5426344 Electronic ballasts |
06/16/1995 | CA2137586A1 Gas discharge lamp ballast circuit with indicator of ballast operability |
06/15/1995 | WO1995016339A1 Protection circuit for electronic ballasts which use charge pump power factor correction |
06/15/1995 | WO1995016338A1 High power factor circuits for energizing gas discharge lamps |
06/15/1995 | WO1995016337A1 Electronic ballast with two transistors and two transformers |
06/14/1995 | EP0658072A2 Ballast circuit for a cathode-heated type of gas discharge lamp |
06/14/1995 | EP0658071A1 Balancing ballast for two lamps in parallel |
06/14/1995 | EP0657091A1 Freely oscillating inverter with pulse width control. |
06/14/1995 | DE4341809A1 Starting and driving device for gas-discharge lamps |
06/14/1995 | CN2200899Y Capacitive induction ballast |
06/14/1995 | CN2200898Y Electronic transformer of neon lamp |
06/14/1995 | CN2200897Y Quick starter for fluorescent lamp |
06/14/1995 | CN2200896Y No contact point electronic starter |
06/14/1995 | CN1028948C Fluorescent lamp controllers with dimming control |
06/14/1995 | CA2137749A1 Circuit arrangement |
06/13/1995 | US5424893 Gas discharge device power supply with ground fault protection |
06/13/1995 | US5424798 For an auxiliary light source |
06/13/1995 | US5424617 HID lamp ignitor-timer with automatic reset for dips in line voltage |
06/13/1995 | US5424616 Modulatged high frequency discharge lamp operating circuit with IR suppression |
06/13/1995 | US5424615 Discharge lamp ballast operating on induced voltage in the primary winding of a boosting transformer |
06/13/1995 | US5424614 Modified half-bridge parallel-loaded series resonant converter topology for electronic ballast |
06/13/1995 | US5424613 Method of operating a gas-discharge lamp and protecting same from overload |
06/13/1995 | US5424611 Method for pre-heating a gas-discharge lamp |
06/13/1995 | US5424610 Compact fluorescent outboard ballast |
06/07/1995 | EP0654203A4 High frequency electronic circuit for load ballasting. |
06/07/1995 | EP0636304A4 High power factor gas lamp energizing circuit. |
06/07/1995 | CN2200273Y Energy-saving starting switch for waste and old fluorescent lamp |
06/07/1995 | CN2200272Y Ballast for fluorescent lamp |
06/07/1995 | CN2200271Y Low voltage starting energy-saving switch for fluorescent lamp |
06/07/1995 | CA2134511A1 Ballast circuit for a cathode-heated type of gas discharge lamp |
06/06/1995 | US5422548 Cut-off vehicular discharge lamp circuit having wait and monitor modes |
06/06/1995 | US5422547 Fluorescent lamp control circuit with dimmer |
06/06/1995 | US5422546 Dimmable parallel-resonant electric ballast |
06/06/1995 | US5422545 Closed loop feedback control circuits for gas discharge lamps |
06/01/1995 | WO1995014963A1 Energy saving power control system |
05/31/1995 | EP0655880A1 Low voltage circuit for operating a low pressure discharge lamp |
05/31/1995 | EP0655174A1 Transistor circuit for powering a fluorescent lamp |
05/31/1995 | CN2199662Y Adjustable light ballast for fluorescent lamp |
05/31/1995 | CN2199660Y Electronic ballast for group controlling of neon lamp |
05/31/1995 | CN2199659Y Electronic starting ballast for preheated fluorescent lamp |
05/31/1995 | CN2199421Y Multipurpose discharge lamp |
05/31/1995 | CN1103231A Power source device |
05/31/1995 | CN1028708C Polarity-changeable dc lighting installation |
05/30/1995 | US5420779 Inverter current load detection and disable circuit |
05/30/1995 | US5420481 Fluorescent lamp with wide range of luminous intensities |
05/30/1995 | US5420479 High pressure vapor discharge lamp with a built-in igniter |
05/24/1995 | EP0654203A1 High frequency electronic circuit for load ballasting |
05/24/1995 | EP0654156A1 Toggle brightening circuit for powering gas discharge lamps and method for operating gas discharge lamps |
05/24/1995 | CN2198739Y High efficiency daylight lamp |
05/24/1995 | CN2198738Y Electronic transformer for eliminating neon lamp tube wave node |
05/24/1995 | CN2198737Y Brightness regulator for daylight lamp |
05/24/1995 | CN1028587C Apparatus for controlling gas-filled tube lamps |
05/23/1995 | US5418432 Variable color luminaire |
05/18/1995 | WO1995013574A1 Electronic ballast with low harmonic distortion |
05/17/1995 | EP0653903A2 Fluorescent tube assembly and method |
05/17/1995 | EP0653777A1 Discharge lamp provided with a bimetal switch, and bimetal switch suitable for a lamp |
05/17/1995 | EP0653150A1 Fluorescent tube driver and lighting system |
05/17/1995 | EP0643900A4 Electrodeless discharge lamp containing push-pull class e amplifier and bifilar coil. |
05/17/1995 | EP0641510A4 Electrodeless discharge lamp including impedance matching and filter network. |
05/17/1995 | CN2197790Y Two purpose ballast for fluorescent lamp |
05/17/1995 | CN2197789Y Electronic initiating ballast for fluorescent lamp |
05/17/1995 | CN2197788Y D.C. power supply |
05/17/1995 | CN2197557Y multifunctional AC/DC fluorescent lamp |
05/17/1995 | CN2197555Y Regulating fluorescent lamp |
05/16/1995 | US5416677 Warning light socket assembly and method for installing same |
05/16/1995 | US5416388 Electronic ballast with two transistors and two transformers |
05/16/1995 | US5416387 Single stage, high power factor, gas discharge lamp ballast |
05/16/1995 | US5416386 Electronic ballast with controlled DC rail voltage |
05/16/1995 | US5416385 Means for compact spatial optical integration |
05/11/1995 | WO1995012964A1 High efficiency uv backlighting system for rear illumination of electronic display devices |
05/11/1995 | DE4338564A1 Control circuit for half-bridge or full-bridge inverters |
05/10/1995 | EP0652691A1 A ballast device for a compact fluorescent lamp |
05/10/1995 | EP0652689A2 Modular lamp power supply system |
05/09/1995 | US5414327 High frequency discharge lamp operating circuit with frequency control of the ignition voltage |
05/09/1995 | US5414325 Gas discharge lamp ballast circuit with automatically calibrated light feedback control |
05/04/1995 | WO1995012300A1 Double resonant driver ballast for gas lamps |