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)
12/1991
12/31/1991CA1293765C Rare gas discharge lamp with an external electrode
12/27/1991EP0462120A1 Circuit and method for driving and controlling gas discharge lamps
12/26/1991WO1991020174A1 Arc discharge ballast suitable for automotive applications
12/26/1991WO1991020173A1 Fast warm-up ballast for arc discharge lamp
12/26/1991CA2085477A1 Arc discharge ballast suitable for automotive applications
12/26/1991CA2082385A1 Fast warm-up ballast for arc discharge lamp
12/25/1991CN2091519U Multi-functional fluorescent lamp photogen
12/25/1991CN2091518U Fluorescent lamp starter
12/25/1991CN2091517U Two in one pullswitch for fluorescent lamp
12/24/1991US5075714 Electronic flash apparatus
12/24/1991US5075602 Discharge lamp control circuit arrangement
12/24/1991US5075601 Power supply dynamic load for traffic and pedestrian signal
12/24/1991US5075600 Piezoelectrically actuated variable capacitor
12/24/1991US5075599 Circuit arrangement
12/24/1991US5075598 Power supply circuit for gas discharge tube
12/18/1991EP0461441A1 Process and circuit for varying the light intensity (dimming) of gas discharge lamps
12/18/1991EP0461312A1 Variable impedance electronic ballast for a gas discharge device
12/18/1991CN2091056U 一种电子镇流器 An electronic ballast
12/18/1991CN2091055U Electronic ignitor for fluorescent lamp
12/18/1991CN2091054U Induction ballast
12/18/1991CN2091023U Energy-saving pull switch
12/17/1991US5073745 Inverter circuit for stable illumination of discharge lamp
12/17/1991CA1293292C Energizing arrangement for a discharge lamp
12/12/1991WO1991019412A1 Solar lamp
12/12/1991DE4018478A1 Electronic ballast for fluorescent lamp - has capacitor outside ballast and between heaters of lamp
12/11/1991EP0460930A2 Ballast for an electrodeless high intensity discharge lamp
12/11/1991EP0460719A2 Apparatus for stabilizing the quantity of light of a fluorescent lamp
12/11/1991EP0460641A2 A rare gas discharge fluorescent lamp device
12/11/1991CN2090601U Low voltage starter for fluorescent lamp
12/11/1991CN2090600U Glow starter base
12/11/1991CN1056973A Safe marker lamp
12/10/1991US5072160 Device for periodically alternating bulb polarities of a DC fluorescent lighting system
12/10/1991US5072159 Lamp driver circuit
12/10/1991US5072158 Silent lamp igniter
12/10/1991US5072157 Excitation device suitable for exciting surface waves in a discharge tube
12/10/1991US5072156 Ballast circuit with means to disconnect power factor capacitor
12/10/1991US5072155 Rare gas discharge fluorescent lamp device
12/04/1991EP0459127A1 High power radiation device with power supply
12/04/1991EP0459126A1 Process and device for starting a high pressure discharge lamp in vehicles
12/04/1991CN2090140U Fluorescent lamp startor
12/04/1991CN1056791A Strobe light erase device
12/03/1991US5070279 Lamp ignitor with automatic shut-off feature
12/03/1991US5070278 Discharge tube arrangement
12/03/1991US5070277 Electrodless hid lamp with microwave power coupler
12/03/1991US5070276 Lamp supply circuit
11/1991
11/28/1991DE4017040A1 Energy saving gas discharge lamp circuit - uses cold conductor to switch in triac for phase chopping control
11/28/1991DE4016684A1 Discharge lamp operating circuit - has voltage multiplier between AC source and lamp electrodes and heating circuit
11/27/1991EP0458546A2 A starting circuit for an electrodeless high intensity discharge lamp
11/27/1991EP0458545A2 A starting aid for an electrodeless high intensity discharge lamp
11/27/1991EP0458544A2 A starting aid for an electrodeless high intensity discharge lamp
11/27/1991EP0458338A1 Method and circuit of improved HID lamp starting
11/27/1991EP0458031A1 An improved electronic flash control circuit
11/27/1991CN2089686U Long life daylight lamp
11/27/1991CN2089685U Electronic starter
11/26/1991US5068577 Constant current drive system for fluorescent tubes
11/26/1991US5068576 Remote control of fluorescent lamp ballast using power flow interruption coding with means to maintain filament voltage substantially constant as the lamp voltage decreases
11/26/1991US5068575 Indirect storage capacitor voltage sensing means for a flyback type DC-to-DC converter
11/26/1991US5068574 Lighting device for fluorescent discharge tube
11/26/1991US5068573 Power supply with energy storage for improved voltage regulation
11/26/1991US5068572 Switch mode power supply
11/26/1991US5068571 Switched bridge circuit
11/26/1991US5068570 Lamp lighting circuit with an overload protection capability
11/26/1991CA2043110A1 Method and circuit for hid lamp starting
11/25/1991CA2017595A1 Neon sign transformer
11/24/1991CA2039023A1 Electronic flash control circuit
11/21/1991EP0457242A1 Electrodeless HID lamp with microwave power coupler
11/21/1991EP0457097A2 Operating circuit for an inverter and process for operating a power electronic switch
11/21/1991EP0457043A2 Signaling flash device
11/21/1991EP0457041A2 Signaling flash device
11/21/1991DE4016060A1 Integrated operating appts. for low pressure discharge lamp - has connecting adaptor contg. all electric components e.g. choke coil, starter and capacitors
11/21/1991DE4015400A1 Starter circuit for vehicle gas discharge lamp - has resonator circuit with limiting action and including two inductances and capacitor
11/21/1991DE4015398A1 Starter control circuit for HV gas discharge lamp in road vehicle
11/20/1991CN2089230U Low voltage starting device for high efficient energy saving lamp
11/20/1991CN1014857B Electric arrangement for igniting and supplying a gas discharge lamp
11/19/1991US5066894 Electronic ballast
11/13/1991EP0456247A1 Apparatus for operating a discharge lamp
11/13/1991CN2088772U Staring device for fluorescent lamp switch
11/13/1991CN2088741U Weak light fluorescent lamp with power less than three wate
11/12/1991US5065074 Fluorescent tube driver and lighting system
11/12/1991US5065072 Power supply circuit for an arc lamp, in particular for a motor vehicle headlight
11/05/1991US5063490 Regulated chopper and inverter with shared switches
11/05/1991US5063332 Feedback control system for a high-efficiency class-D power amplifier circuit
11/05/1991US5063331 High frequency oscillator-inverter circuit for discharge lamps
11/05/1991US5063328 Energy saving circuit for discharge tubes
10/1991
10/31/1991WO1991016803A1 Switching excitation supply for gas discharge tubes
10/31/1991WO1991016802A1 Electronic lamp ballast for gas discharge lamp
10/31/1991DE4109895A1 Elongated electrodeless discharge lamp bulb contg. plasma source - has limits of discharge space speed. from walls to improve substrate irradiation by ends of reflector
10/31/1991DE4013697A1 Fluorescent lamp starter with constant-current dimmer switch - ensures electrode heating by current regulated independently of ratio of discharge current to total lamp current
10/30/1991EP0453888A2 Circuit for operating a fluorescent lamp
10/30/1991CN2087856U 一种电子镇流器 An electronic ballast
10/30/1991CN2087855U 电子镇流器 Electronic Ballast
10/30/1991CN1055855A Full automatio, long aervice life and low energy-consumption safety mark lamp
10/23/1991EP0453030A1 Fluorescent lamp controlling arrangement
10/23/1991CN2087416U 电子镇流器 Electronic Ballast
10/22/1991US5059870 Electronic solid state starter for fluorescent lamps
10/22/1991US5059869 Circuit arrangement for the operation of high-pressure gas discharge lamps by means of a pulsatory supply current
10/22/1991US5059868 Starting circuit for an electrodeless high intensity discharge lamp
10/22/1991US5059867 Ballast circuit with improved transfer functions
10/22/1991CA1291205C Fluorescent lamp brightness control
10/18/1991CA2040452A1 Fluorescent lamp controlling arrangement
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