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)
09/1990
09/25/1990US4959584 Luminaire for an electrodeless high intensity discharge lamp
09/20/1990WO1990011004A1 Improved electronic ballast and power controller
09/19/1990CN2062543U Power saving neon lamp power supply
09/19/1990CN2062542U Ac/dc electronic emergency charging fluorescent lamp
09/19/1990CN2062541U Power saving light-adjusting non-frequency flash electronic ballast
09/18/1990US4958109 Solid state ignitor
09/18/1990US4958108 For controlling the operation of a gas discharge lamp
09/18/1990US4958107 Switching arrangement for HID lamps
09/18/1990US4958106 High-pressure sodium discharge lamp
09/16/1990CA2012441A1 Supply circuit
09/13/1990DE4005776A1 Start and operating circuit for fluorescent lamp - uses digital circuit to control voltage and firing point
09/12/1990EP0386990A2 Operating method and circuit for discharge lamps
09/12/1990CN2062145U Self-starting ballast
09/12/1990CN2062144U Inductance-capacity starting ballast for fluorescent lamp
09/12/1990CN2062143U Light stepless regulator for fluorescent lamp
09/11/1990WO1990011005A1 Electronic starting and power supply device for preheated electrode fluorescent tubes
09/11/1990US4956583 Control system for electrical lighting
09/11/1990US4956579 Plasma Display using a double-walled enclosure
09/11/1990CA2028122A1 Electronic start and supply device for preheat electrodes fluorescent tubes
09/07/1990WO1990010175A1 Cassette light, powering unit therefor, multi-dynamic smart magnetic structure and method
09/05/1990EP0385845A1 Electronic supply of electric power to a load of a preferably capacitive nature, such as in particular a discharge tube, periodically short-circuited without cutting off said power supply
09/05/1990CN2061754U Power-economizing starter of fluorescent lamp
09/05/1990CN2061753U General inductance-capacitance ballast for many fluorescent lamps
09/05/1990CN2061752U Electric source of fluorescent lamp
09/05/1990CN2061751U High-speed energy-saving low voltage glow starter
09/04/1990US4954754 Controlled electronic ballast
09/04/1990US4954749 Fluorescent lamp electrode disconnect method and arrangement for practicing the method
08/1990
08/29/1990EP0384408A1 Gas discharge tube, indirectly heated cathode for use therein and drive circuit therefor
08/29/1990EP0383831A1 Circuit arrangement for igniting and operating gas discharge lamps.
08/29/1990CN2061357U Speed starting switch for fluorescent lamp
08/29/1990CN2061245U Energy-saving ac/dc desk lamp
08/28/1990US4952906 Strobe alarm circuit
08/28/1990US4952849 Fluorescent lamp controllers
08/28/1990US4952848 Signal generating circuit for ballast control of discharge lamps
08/28/1990US4952847 Stable ignition means for fluorescent lamp or the like
08/28/1990US4952846 Circuit arrangement for operating a high-pressure sodium discharge lamp
08/28/1990US4952845 DC/AC converter for igniting and operating a discharge lamp
08/28/1990US4952844 Electronic ballast circuit for discharge lamp
08/28/1990US4952842 DC/AC converter for igniting and supplying a gas discharge lamp
08/28/1990CA1273403A1 Control of large volume gaseous electric discharge system
08/22/1990EP0383692A2 Circuit and method for controlling luminous intensity of discharge lamps
08/22/1990EP0383385A1 Two-lead igniter for HID lamps
08/22/1990CN2060961U Glow switching ballast unit for fluorescent lamp
08/22/1990CN1044886A Light-adjusting ignitor for high low-pressure gas discharge lamps
08/22/1990CN1009326B Multipurpose energy-saving electronic ballast
08/22/1990CN1009325B Fluorescent lamp apparatus
08/21/1990US4951081 Flash device
08/21/1990US4951080 Device for controlling the amount of emission of electronic flash apparatus
08/21/1990US4950963 Automatic light dimmer for gas discharge lamps
08/21/1990US4950961 Starting circuit for gaseous discharge lamps
08/21/1990US4950959 Cassette light, powering unit therefore, multi-dynamic smart magnetic structure and method
08/21/1990CA1273051A1 Failing lamp monitoring and deactivating circuit
08/21/1990CA1273049A1 Fluorescent lamp circuit
08/16/1990EP0382357A1 Dimmer modules for lighting control systems
08/16/1990EP0381672A1 The electronic stabilizer for a fluorescent lamp
08/15/1990CN2060616U High efficiency starter of fluorescent lamp
08/15/1990CN2060615U Coil thermal slice type circuit on/off device
08/15/1990CA2009805A1 Two-lead igniter for hid lamps
08/14/1990US4949018 High pressure sodium lamp starter controller
08/14/1990US4949016 Circuit for supplying constant power to a gas discharge lamp
08/14/1990US4949015 Bridge inverter ballast for fluorescent lamp
08/14/1990US4949013 High-frequency operating circuit for a fluorescent lamp
08/14/1990CA1272754A1 Sodium discharge lamp having a current supply conductor connected via a capacitor to a translucent conducting coating
08/11/1990WO1990009729A1 Circuit and method for driving and controlling gas discharge lamps
08/11/1990CA2046278A1 Circuit and method for driving and controlling gas discharge lamps
08/09/1990WO1990009087A1 Solid state electronic ballast
08/08/1990EP0381151A1 Electronic flash apparatus
08/08/1990EP0381083A1 Starting circuit for a high-pressure metal vapour discharge lamp connected to an AC source by a ballast inductor
08/08/1990EP0380795A1 Starting device for discharge tube
08/08/1990CN2060258U Power general illumination fluorescent lamp
08/08/1990CN1044569A Electronic solid started for fluorescent lamps
08/07/1990US4947086 System for lighting fluorescent lamps
08/07/1990US4947079 Notch cutting circuit with minimal power dissipation
08/02/1990DE4002334A1 Electric lamp lighting circuit with protection against overload - includes protective switch opened automatically on de-energisation of relay coil in series with manual lighting switch
08/02/1990DE4001526A1 Verfahren zur dimensionierung und zum betrieb einer niederdruckentladungslampe A method for sizing and operation of a low-pressure discharge lamp
08/02/1990DE3902984A1 Electronic ballast device
08/02/1990DE3902785A1 Circuit device for controlling the power of illumination systems
08/01/1990WO1990009088A1 Gas-enclosure lighting device
08/01/1990EP0379729A2 Improvements in frequency converter circuits for powering cold cathode fluorescent tubes
08/01/1990CN2060031U 电子镇流器 Electronic Ballast
08/01/1990CN2060030U Multifunction electronic ballast for fluorescent lamp
08/01/1990CA2026319A1 Illuminating device incorporating gas-filled chambers
07/1990
07/31/1990US4945289 Electronic supply system for fluorescent tubes with electrodes
07/31/1990US4945279 Lamp apparatus for generating sequential flashes
07/31/1990US4945278 Fluorescent tube power supply
07/26/1990WO1990008399A1 Method of dimensioning and operating a low pressure discharge lamp
07/25/1990EP0378992A1 Circuitry for driving discharge lamps
07/25/1990CN2059785U Inverse excited electronic flash lamp
07/25/1990CN2059784U Flash lamp with acoustic arrangement
07/25/1990CN2059772U Combined bracket for electronic ballast of fluorescent lamp
07/24/1990US4943886 Circuitry for limiting current between power inverter output terminals and ground
07/18/1990CN2059541U Miniature flashy starter for fluorescent lamp
07/17/1990US4942340 Arrangement for displaying operation of booster circuit for flash device camera
07/17/1990US4941743 Lamp stabilizer circuits, heaters
07/11/1990EP0377510A2 Power factor correction circuit
07/11/1990CN2059292U Controller for gas discharge electric lamg
07/11/1990CN2059291U Day light lamp for power saving and electricity cut off
07/10/1990US4940922 Integral reflector flashlamp
07/10/1990CA1271515A1 Filament winding arrangement in ballast transformer
07/10/1990CA1271514A1 Four lamp ballast
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