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)
01/1996
01/04/1996DE4421736A1 Steuerung für Leuchtstofflampen Control for fluorescent lamps
01/03/1996EP0689757A1 High power factor circuits for energizing gas discharge lamps
01/03/1996EP0689689A1 Energy saving power control system
01/03/1996CN1114522A Ballast circuit equipped with ground fault detector
01/03/1996CN1114492A Method and apparatus for controlling fluorescent lamp
01/03/1996CN1030634C Inverter device
01/02/1996US5481163 Discharge lamp current controlling circuit
01/02/1996US5481162 Method of supplying current to a sodium high-pressure discharge lamp, and current supply system
01/02/1996US5481161 Variable frequency generator for resonant power feedback
01/02/1996US5481160 Electronic ballast with FET bridge inverter
12/1995
12/28/1995WO1995035646A1 Fluorescent tube control
12/28/1995WO1995035645A1 Method and circuit arrangement for operating a high pressure discharge lamp
12/28/1995CA2193475A1 Fluorescent tube control
12/27/1995EP0689373A2 Circuits for controlling the light intensity and the operating mode of discharge lamps
12/27/1995EP0688492A1 Protection circuit for electronic ballasts which use charge pump power factor correction
12/27/1995CN2216316Y Durable glow starter for fluorescent lamp
12/27/1995CN2216315Y 镇流器 Ballast
12/27/1995CN1114098A Electron ballast
12/27/1995CN1114082A Electron light source without strobe and radio-frequency pollution
12/26/1995US5479334 Inverter for the supply of discharge lamps with heated electrodes, with resonant circuit
12/26/1995US5479326 Ceiling system with readily movable lighting panels
12/26/1995US5479102 Simulated load circuit for simulating the arc impedance of an electrodless discharge lamp
12/26/1995US5479076 Current mode restart circuit for a dc arc lamp
12/26/1995US5479075 Fluorescent lamp starter circuit
12/26/1995US5479074 Electronic ballast with pre-conditioner circuit
12/21/1995DE4143464C2 Lighting circuit for high-pressure discharge lamp for vehicle
12/20/1995EP0688153A2 Process and circuit for controlling the light intensity and the operating mode of discharge lamps
12/20/1995EP0688152A1 Circuit and device for operating a low pressure fluorescent lamp
12/20/1995EP0688151A1 Device for operating a low pressure discharge lamp
12/20/1995EP0688039A2 Fluorescent lamp and manufacture thereof
12/19/1995US5477112 Ballasting network with integral trap
12/19/1995US5477109 Discharge lamp fast preheat circuit independent of type of ballast
12/19/1995US5477108 Control device and methods of making and operating the same
12/13/1995EP0687135A2 Device for the regulation of electrical supply voltage to electric-discharge lamps
12/13/1995EP0687134A2 Miniaturized transformer and inverter circuit and discharge tube glow circuit including such miniaturized transformer
12/13/1995CN1113374A Method of operating a neon discharge lamp
12/12/1995US5475285 Lamp circuit limited to a booster in which the power output decreases with increasing frequency
12/12/1995US5475284 Ballast containing circuit for measuring increase in DC voltage component
12/07/1995WO1995033299A1 Switching power supply for the operation of electric lamps
12/07/1995DE4418886A1 Cycled power supply for lamps from AC mains or DC source e.g. car battery
12/06/1995EP0685831A1 Liquid crystal display with back-light control function
12/06/1995CN2214728Y Multipurpose energy saving electronic ballast
12/06/1995CN2214727Y 电子镇流开关 Electronic ballast switch
12/06/1995CN1113101A Parallel resonant ballast with boost
12/06/1995CN1113068A Mosgate driver for ballast circuits
11/1995
11/30/1995WO1995032544A1 Series-resonant converter
11/29/1995EP0684755A1 A supply circuit for a gas-discharge lamp, particularly for motor vehicles
11/29/1995EP0684754A1 A power supply circuit, particularly for motor vehicles
11/29/1995EP0684629A1 Electrodeless high intensity discharge lamp energized by a rotating electric field
11/29/1995EP0683966A1 Electronic ballast with two transistors and two transformers
11/29/1995EP0664944A4 Parallel resonant ballast with boost.
11/28/1995US5471119 Distributed control system for lighting with intelligent electronic ballasts
11/28/1995US5471118 Electronic ballast with power-factor-correcting pre-converter
11/28/1995US5471117 Low power unity power factor ballast
11/28/1995US5471116 General assembly for controlling light intensity of a gas discharge lamp
11/28/1995US5471114 Fail-safe uninterruptible lighting system
11/23/1995WO1995031802A1 Sign with/without illumination
11/23/1995DE4143488C2 Ballast circuit for fluorescent lamp
11/22/1995EP0683421A2 Lens-fitted photo film unit and electronic flash device for use therewith
11/22/1995EP0683420A1 Flash device for camera
11/22/1995EP0683354A1 Flashlight
11/21/1995US5469028 Electronic ballast drawing sinusoidal line current
11/21/1995US5469027 Device for operating a high pressure gas discharge lamp
11/21/1995CA1337609C Ignitor circuit for discharge lamps with novel ballast
11/15/1995EP0682464A1 Circuit for operating electric lamps
11/15/1995EP0681779A1 Single transistor ballast for gas discharge lamps
11/15/1995CN2212875Y Multifunctional assembly for electronic ballast
11/14/1995US5466992 Inverter ballast circuit featuring current regulation over wide lamp load range
11/08/1995EP0681415A1 Device for operating a discharge lamp, especially for inside lighting or signalling of vehicles
11/08/1995EP0681414A2 Protection circuit for arc discharge lamps
11/08/1995EP0489747B1 Circuit arrangement for operating a gas discharge lamp
11/08/1995CN1111437A Improvement of circuit of daylight lamp starter
11/07/1995US5465029 Power control apparatus for discharging lamp and method thereof
11/07/1995US5465028 Illumination unit, and electrodeless low-pressure discharge lamp and coil suitable for use therein
11/02/1995EP0680246A1 Power supply apparatus having high power-factor and low distortion-factor characteristics
11/02/1995EP0680245A2 Static converter with controlled switch and operating circuit
11/02/1995DE4415072A1 Socket for miniature fluorescent tubes
11/01/1995CN2211685Y Electronic ballast for fluorescent light
11/01/1995CN2211684Y High effective and energy saving ballast for fluorescent light
10/1995
10/31/1995US5463287 Discharge lamp lighting apparatus which can control a lighting process
10/31/1995US5463285 Variable capacitor with very fine resolution
10/31/1995US5463284 Lamp ballast circuit characterized by a single resonant frequency substantially greater than the fundamental frequency of the inverter output signal
10/31/1995US5463282 Electronic supply for igniting and operating a high/pressure discharge lamp
10/31/1995US5463281 Circuit arrangement for operating a high-pressure discharge lamp
10/26/1995WO1995028819A1 Low height ballast for fluorescent lamps
10/26/1995DE19511810A1 Projection type LCD projector lamp drive unit
10/25/1995EP0679050A1 Impedance matching circuit for an electrodeless fluorescent lamp ballast
10/25/1995EP0679049A1 Gas discharge lamp ballast circuit
10/25/1995EP0679048A2 Circuit for operating a discharge lamp ballast
10/25/1995EP0679047A2 Circuit for operating a discharge lamp with pulses
10/25/1995EP0679046A1 Circuit for operating low-pressure discharge lamps
10/25/1995EP0678900A2 Electrodeless lamp
10/25/1995EP0678899A2 Electrodeless lamp
10/25/1995EP0655174A4 Transistor circuit for powering a fluorescent lamp.
10/25/1995CN2211110Y Super-micro electronic energy-saving fluorescent lamp
10/25/1995CN1110830A Low-voltage no-stroboflash safety energy-saving fluorescence lamp for machine tool
10/24/1995US5461288 Power management device for large electronic flash units
10/24/1995US5461287 Booster driven inverter ballast employing the output from the inverter to trigger the booster
10/24/1995US5461286 Circuit arrangement for operating a low-pressure discharge lamp, typically a fluorescent lamp, from a low-voltage source
10/24/1995US5461285 for controlling color temperature of a high pressure sodium discharge lamp
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