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)
01/1997
01/01/1997CN2244278Y Quick starter for fluorescent lamp
01/01/1997CN2244250Y Energy saving fluorescent desk lamp
01/01/1997CN2244133Y New fluorescent lamp
12/1996
12/31/1996US5589742 Discharging lamp lighting apparatus having optimal lighting control
12/31/1996US5589740 Semiconductor-controlled operating circuit for one or more low-pressure discharge lamps, typically fluorescent lamps
12/31/1996US5589739 Hybrid ballast for high pressure discharge lamp
12/31/1996US5589730 Motor vehicle lighting/indicating apparatus using luminescent discharge
12/27/1996EP0750447A1 Circuit arrangement for the ignition of a fluorescent lamp
12/27/1996EP0749631A1 Compact microwave source for exciting electrodeless lamps
12/25/1996CN2243760Y Electronic ballast for large power high intensity gas discharging lamp
12/25/1996CN2243711Y Composite cushion reductive ballast
12/24/1996US5587894 Power source device
12/24/1996US5587644 Charging control device for flash device
12/24/1996US5587629 Transformerless high-voltage generator circuit
12/24/1996CA2098247C Luminaire of variable color temperature for obtaining a blended color light of a desired color temperature from different emission-color light sources
12/19/1996WO1996041504A1 Phase control circuit having independent half cycles
12/19/1996WO1996041503A1 Control circuit for gas discharge lamps
12/19/1996WO1996041502A1 Moveable desktop load controller
12/19/1996DE19622803A1 Vehicle electrical power supply circuit for gas-discharge lamps
12/18/1996EP0749269A2 Suppressor for an electronic ballast
12/18/1996EP0749152A1 Electrodeless high intensity discharge lamp having field symmetrizing aid
12/18/1996EP0749151A1 Discharge light source with reduced magnetic interference
12/18/1996EP0748578A1 A lighting system with a device for reducing system wattage
12/18/1996CN1138407A System to optimize artificial lighting levels with increasing daylight level
12/18/1996CN1138285A Bipolar power device having integrated thermal protection driving electric loads
12/17/1996US5586016 Circuit for quickly energizing electronic ballast
12/17/1996US5585713 Light dimmer circuit with control pulse stretching
12/17/1996US5585700 Electronic ballast
12/17/1996US5585699 Control circuit for fluorescent lamps
12/17/1996US5585023 Vertical lifted portable electric furnace and method for use thereof
12/17/1996CA2178854A1 Electrodeless high intensity discharge lamp having field symmetrizing aid
12/12/1996DE19618931A1 Lighting circuit for discharge lamp
12/12/1996DE19615665A1 Feedback control system for fluorescent discharge lamps
12/11/1996EP0748147A2 Electronic ballast for fluorescent lamps
12/11/1996EP0748146A1 Circuit arrangement for preheating the electrodes of a discharge lamp
12/11/1996EP0746965A1 Circuit for driving a gas discharge lamp load
12/11/1996EP0746964A1 Fault tolerant electronic ballast
12/11/1996EP0746867A1 Gas discharge lamp and power distribution system therefor
12/11/1996EP0746809A1 Electronic ballast with low harmonic distortion
12/11/1996EP0746769A1 Automated continuous and random access analytical system and components thereof
12/11/1996CN2242562Y Flash signal lamp for traffic purpose
12/10/1996US5583605 Photoelectric current converting circuit
12/10/1996US5583423 Energy saving power control method
12/10/1996US5583402 Symmetry control circuit and method
12/10/1996US5583399 Ballast for one or more fluorescent lamps including threshold sensitive filament voltage preheating circuitry
12/10/1996US5583398 Ballast circuit
12/10/1996US5583397 Strobe apparatus with color temperature control
12/10/1996US5583396 Illuminator
12/10/1996US5583395 Fluorescent device having a fluorescent starter which precisely controls heating time and absolute synchronism of fire point
12/06/1996CA2178120A1 Electronic ballast for fluorescent lamps
12/05/1996WO1996039010A1 Ballast circuit
12/05/1996WO1996039009A1 Circuit arrangement
12/05/1996WO1996039008A1 Modular uninterruptible lighting system
12/05/1996WO1996038896A1 Fail-safe lighting system with load shedding and dimming
12/05/1996CA2196573A1 Ballast circuit
12/05/1996CA2196178A1 Circuit arrangement
12/04/1996EP0746186A1 Control apparatus for a lighting system of a discharge lamp used in various types of vehicles
12/04/1996EP0746185A1 Monitoring circuit for a two lamp system
12/04/1996EP0746184A2 Circuit arrangement for energy saving operation of electrical loads
12/04/1996EP0745273A1 Circuit arrangement, and junction field effect transistor suitable for use in such a circuit arrangement
12/04/1996EP0704144A4 Soft switching circuitry
12/04/1996EP0417315B1 Device for lighting a discharge lamp
12/03/1996US5581161 DC coupled electronic ballast with a larger DC and smaller AC signal
12/03/1996US5581158 Lighting control system for gas discharge lamps
11/1996
11/28/1996WO1996038024A1 High efficiency electronic ballast
11/27/1996EP0744883A1 Device and process for operating a high pressure discharge lamp
11/27/1996EP0744119A1 Circuit arrangement for alternatingly establishing and extinguishing a discharge in each of a plurality of discharge paths
11/27/1996CN2241427Y Computer programmable neon lamp controller
11/27/1996CN1136881A Circuit arrangement
11/27/1996CN1136880A Circuit arrangement
11/26/1996US5579068 Electronic flash apparatus of a camera
11/26/1996US5578908 Phase control circuit having independent half cycles
11/26/1996US5578907 Power supply circuit
11/26/1996US5577835 PL lamp holder
11/26/1996CA2031717C Starting and operating device for controlling a starter that ignites a sodium lamp
11/21/1996DE19518096A1 Electronic ballast unit for explosion-protected fluorescent lamps
11/21/1996DE19517993A1 Electrical gas discharge bulb
11/20/1996EP0743754A1 Starter circuit of a fluorescent tube
11/20/1996EP0743753A1 Switching and power supply unit
11/20/1996EP0669074A4 Ballast circuit equipped with ground fault detector.
11/20/1996EP0637401B1 Two relay switching circuit for fluorescent lighting controller
11/20/1996CN2240824Y Capacity type electronic ballast
11/20/1996CN2240823Y Capacity type ballast for fluorescent lamp
11/20/1996CN2240822Y Solid electronic starter for fluorescent lamp
11/20/1996CN1136384A Cold cathode discharge device
11/20/1996CN1136383A Electronic starter in a fluorescent lamp apparatus
11/20/1996CN1136264A Design of electric power supply for initiating several lamps instantanously
11/20/1996CN1136216A Push-pull phase inverters
11/19/1996US5576614 Circuit for supplying constant voltage to a lamp from an AC input
11/19/1996US5576599 Low EMI high intensity discharge RF driven lamp
11/14/1996WO1996036066A1 Discharge lamp and device for operating it
11/14/1996DE19618983A1 Inverter circuit of inverter-fed gas discharge lamp for motor vehicle
11/14/1996DE19517515A1 Entladungslampe und Verfahren zum Betreiben derartiger Entladungslampen Discharge lamp, and method for operating such discharge lamps
11/14/1996DE19517355A1 Dimmable fluorescent lamp electronic ballast for internal lighting
11/13/1996CN2240226Y Electronic dimming ballast for fluorescent lamp
11/13/1996CN2240225Y Electronic ballast
11/13/1996CN2240224Y High-tension thermister protector for transformer of neon lamp
11/13/1996CN1135706A Lighting device for displaying case
11/12/1996US5574338 Control circuit for gas discharge lamps, which has a transformer with start and run windings
11/12/1996US5574337 Single touch flash charger control
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