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)
07/1998
07/08/1998EP0852454A2 Operating circuit for a low pressure electrodeless discharge lamp
07/08/1998EP0852453A1 Electronic ballast for a discharge lamp, provided with a lamp power measurement by means of a DC-signal
07/08/1998EP0852391A2 Illumination device, method for driving the illumination device and display device including the illumination device
07/08/1998EP0852106A1 A method and an arrangement for controlling gas discharge lamps
07/08/1998EP0768016A4 A vertically lifted portable electric furnace
07/08/1998CN2285953Y Ballast
07/08/1998CN1187264A Discharge lamp and device for operating it
07/07/1998USRE35837 Microprocessor-controlled strobe light
07/07/1998US5778146 Light beam heating apparatus
07/07/1998US5777861 Power supply apparatus having high power-factor and low distortion-factor characteristics
07/07/1998US5777837 Power supply circuit
07/07/1998US5777439 Detection and protection circuit for fluorescent lamps operating at failure mode
07/07/1998CA2083861C Electronic ballast and protection circuit
07/02/1998WO1998028949A1 Ballast circuit
07/02/1998WO1998028836A1 Circuit arrangement
07/02/1998WO1998028671A1 Power supply and electronic ballast with low-cost inverter bootstrap power source
07/02/1998DE19757468A1 Self-oscillating fluorescent lamp-ballast arrangement
07/02/1998DE19705985A1 Arrangement for operating and controlling gas-discharge lamps esp high-pressure type in motor vehicle
07/02/1998DE19653053A1 Temperature stabilising circuit for bipolar switching transistor for current supply
07/01/1998EP0851719A2 Power supply device and discharge lamp lighting device
07/01/1998EP0851718A2 Gas discharge lamp ballast with power factor correction
07/01/1998EP0851717A1 Electronic flash device
07/01/1998EP0851462A2 Fluorescent lamp with adjustable color temperature
07/01/1998EP0696407B1 Fiber-optic anticycling device for street lamps
07/01/1998CN2285543Y Fully-closed electronic ballast device
06/1998
06/30/1998US5774322 Three wire power supply circuit
06/30/1998US5773937 Discharge lamp-lighting apparatus for straightening arc discharge
06/25/1998WO1998027792A1 Ballast
06/25/1998WO1998027791A1 Magnetic feedback ballast circuit for fluorescent lamp
06/24/1998CN2285005Y Shaded pole daylight lamp
06/24/1998CN1185710A Constant-stable-power power-supply for gas discharging lamp
06/23/1998US5771159 Power supply device
06/23/1998US5770926 Feedback control system of an electronic ballast which detects arcing of a lamp
06/23/1998US5770925 Electronic ballast with inverter protection and relamping circuits
06/23/1998US5770924 Ignitional run circuit that immediately applies only a DC voltage after lamp ignition but before the main AC potential is applied
06/23/1998CA2113031C Inverter device
06/18/1998WO1998026634A1 Fluorescent lighting assembly with integral ballast
06/17/1998EP0848581A1 Cathode filament heating circuit for a low-pressure discharge lamp
06/17/1998EP0848580A1 Electronic ballast provided with a thermal safety circuit
06/17/1998EP0847681A1 Striking circuit for a high-pressure gas discharge lamp
06/17/1998EP0847680A1 Process and circuit for striking a high-pressure gas discharge lamp
06/17/1998EP0819317A4 Apparatus for exciting an electrodeless lamp with microwave radiation
06/16/1998US5767631 Power supply and electronic ballast with low-cost inverter bootstrap power source
06/16/1998US5767630 Methods and apparatus for obtaining floating output drive to fluorescent lamps and minimizing installation requirements
06/16/1998US5767626 Electrodeless lamp starting/operation with sources at different frequencies
06/16/1998US5765938 Sleeve retention for flexible core of a flashlight
06/11/1998WO1998025442A2 Industrial voltage ballast circuit with passive power factor correction
06/11/1998WO1998025441A2 Circuit arrangement
06/11/1998WO1998025154A1 Measuring instrument for a loaded dc/dc converter
06/10/1998EP0847230A2 Inverter apparatus
06/10/1998EP0846406A1 Circuit arrangement for operating a high-pressure gas discharge lamp on alternating current
06/10/1998EP0624304B1 A circuit for driving gas discharge lamps having protection against diode operation of the lamps
06/10/1998DE19651100A1 Device for controlling gas-discharge lamp esp fluorescent lamps
06/10/1998CN2283955Y NO-contact capacitance energy-storage locomotive mercury xenon lamp trigger
06/10/1998CN2283785Y Electron ballast fluorescent lamp
06/10/1998CN1184402A Lighting device of discharge lamp and illuminator
06/10/1998CN1184401A Non-electrode low-voltage discharge lamp operating circuit
06/09/1998US5765073 Field controlled plasma discharge printing device
06/09/1998US5764496 Inverter device including an auxiliary power supply with a smoothing capacitor
06/09/1998US5763964 Distributed neon power supply system
06/09/1998US5762509 Ballast casing for fluorescent lamp
06/04/1998WO1998024277A1 Method and starter circuits for igniting and operating discharge lamps
06/04/1998DE19706159A1 Dimming and energy-saving circuit for AC-driven lamps
06/04/1998DE19649788A1 Meßvorrichtung für einen belasteten Gleichspannungswandler Measuring device for a loaded DC-DC converter
06/03/1998EP0845928A1 Lighting apparatus for discharge lamps with preheating filaments
06/03/1998EP0845927A2 Circuit for operating low pressure discharge lamps with a low voltage source
06/03/1998EP0845304A2 Electrical inspection apparatus for a flash unit
06/03/1998EP0769239A4 Circuit for energizing a fluorescent lamp and method of operating a circuit for energizing a fluorescent lamp
06/03/1998CN2283340Y Light-modulating electronic ballast
06/03/1998CN2283339Y 一种电子镇流器 An electronic ballast
06/03/1998CN1183705A Discharge light source lighting system power control and energy saving method
06/03/1998CN1183704A Gas discharge light source brightness control and message sending apparatus
06/03/1998CN1183633A Compact electrodeless fluorescent A-line lamp
06/02/1998US5761058 Power converter apparatus for a discharge lamp
06/02/1998US5761056 Circuit for protecting fluorescent lamp from overload
06/02/1998US5760619 Piezoelectric transformer driver circuit
05/1998
05/28/1998WO1998023135A1 Magnetic ballast adapter circuit
05/28/1998WO1998023134A1 Lamp driver circuit and method
05/28/1998WO1998023133A1 Method and apparatus for powering an electrodeless lamp with reduced radio frequency interference
05/28/1998WO1998022973A2 Lampholder and lighting unit comprising a lampholder
05/27/1998CN2282758Y Ballast for fluorescent lamp
05/27/1998CN1183021A Stepped starting type electronic ballast for high strength gas discharge lamp
05/26/1998US5757630 Control circuit with improved functionality for non-linear and negative resistance loads
05/26/1998US5757145 Dimming control system and method for a fluorescent lamp
05/26/1998US5757144 Gas discharge lamp ballasting means
05/26/1998US5757143 Discharge lamp control circuit with feedback loop to lower harmonic distortion
05/26/1998US5757142 Fluorescent light dimmer
05/26/1998US5757141 MOSgate driver for ballast circuits
05/26/1998US5757140 Electronic ballast with frequency control
05/26/1998US5757136 Socket and socket housing for an electric lamp particularly for a suspended or pendant lamp
05/22/1998WO1998021920A1 Gas discharge lamp
05/22/1998WO1998021634A1 Three-way dimming ballast circuit with passive power factor correction
05/22/1998WO1998017081A3 Direct current gas discharge lamp starter and direct current gas discharge lamp instant start ballast
05/20/1998EP0843505A1 Electronic ballast for at least one discharge lamp
05/20/1998EP0801881B1 Method of operating at least one fluorescent lamp with electronic ballast, and ballast therefor
05/20/1998CN2282322Y Integrated starter outer casing
05/19/1998US5754065 Driving scheme for a bridge transistor
05/19/1998US5754013 Apparatus for providing a nonlinear output in response to a linear input by using linear approximation and for use in a lighting control system
05/19/1998US5754012 Primary side lamp current sensing for minature cold cathode fluorescent lamp system
05/14/1998DE19645742A1 Dimmer circuit for compact electronic fluorescent lamps
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