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)
01/2000
01/04/2000US6011357 Triac dimmable compact fluorescent lamp with low power factor
01/04/2000CA2055392C Strobe circuit utilizing optocoupler in dc-to-dc converter
12/1999
12/29/1999WO1999067977A2 Circuit arrangement
12/29/1999WO1999067976A2 Ballast circuit
12/29/1999EP0967843A2 Device and process for lighting discharge lamp
12/29/1999EP0702887B1 Circuit arrangement
12/29/1999EP0702885B1 Circuit arrangement
12/29/1999CN2356458Y High power energy sving electronic ballast
12/29/1999CN1240103A Electronic ballast with lamp current valley-fill power factor correction
12/29/1999CN1240036A Power supply and electronic ballast with low-cost inverter boostrap power source
12/29/1999CN1239862A Lighting system with electronic gas discharge light source
12/29/1999CN1047908C MOS gate driver for ballast circuit
12/29/1999CN1047907C Dimming circuit for powering gas discharge lamps
12/29/1999CA2335856A1 Ballast circuit
12/28/1999US6009281 Flash device
12/28/1999US6008594 Discharge lamp lighting controller and discharge lamp socket applied to the same
12/28/1999US6008593 Closed-loop/dimming ballast controller integrated circuits
12/28/1999US6008592 End of lamp life or false lamp detection circuit for an electronic ballast
12/28/1999US6008591 Circuit for starting an hid lamp
12/28/1999US6008590 Integrated circuit inverter control having a multi-function pin
12/28/1999US6008589 Single-switch, high power factor, ac-to-ac power converters
12/28/1999US6008587 Fluorescent lamp electronic ballast control circuit
12/28/1999US6008586 Direct current ballastless modulation of gas discharge lamps
12/28/1999US6008583 Discharge lamp with secondary ignition electrode
12/28/1999US6007210 Discharge lamp device having a light distribution compound lens
12/28/1999CA2159849C A hardware arrangement and method of driving a piezoelectric transformer
12/22/1999EP0965252A1 Electronic ballast
12/22/1999EP0965251A1 Method and device for controlling the operation of gas discharge lamps
12/22/1999EP0965250A1 Control switch and electronic ballast with said control switch
12/22/1999EP0965249A1 Method and device for detecting the rectification effect occurring in a gas discharge lamp
12/22/1999CN2355510Y High effective energy saving electronic ballast
12/21/1999US6005356 Operating method and operating apparatus for a high pressure discharge lamp
12/21/1999US6005355 Electronic ballast system for fluorescent lamps
12/21/1999US6005354 Ballast IC with shut-down function
12/21/1999US6005353 Commutator for a discharge lamp having mutually coupled inductors
12/21/1999US6005352 Electronic flash device
12/21/1999US6005302 Fixed-cycle power-supply circuit with an at least temporarily active consumer-independent load
12/16/1999WO1999053471B1 Resonant square wave fluorescent tube driver
12/15/1999CN2354306Y Preheated type electronic ballast
12/15/1999CN2354305Y 简化式镇流器 Simplify ballast
12/15/1999CN1238658A DC circuit for fluorescent lamp and method for designing electrode structure of lamp tube
12/15/1999CN1047495C Discharger of short-arc pulsed gas discharge lamp
12/15/1999CN1047486C Circuit device and method for driving piezoelectric transformer
12/14/1999US6002215 Lighting circuit for discharge lamp
12/14/1999US6002214 Phase detection control circuit for an electronic ballast
12/14/1999US6002213 MOS gate driver circuit with analog input and variable dead time band
12/14/1999US6002210 Electronic ballast with controlled-magnitude output voltage
12/14/1999US6000819 Wide area light fixture for hazardous locations
12/09/1999WO1999062567A1 Circuit for operating a uv-lamp in a degerminating reactor
12/08/1999EP0962959A2 Blue light electrodeless high intensity discharge lamp system
12/08/1999CN2353109Y Linear and stepless light adjustable electronic ballast
12/07/1999US5999748 Camera with lens barrier apparatus
12/07/1999US5999432 High-efficiency bridge inverter
12/07/1999US5998942 Device for starting and supplying a fluorescent tube
12/07/1999US5998941 Low-voltage high-efficiency fluorescent signage, particularly exit sign
12/07/1999US5998939 High frequency HID lamp system
12/07/1999US5998938 Circuit arrangement with a piezoelectric transformer
12/07/1999US5998937 Light controller connected to piezoelectric transformer for controlling cold cathode tube by changing frequency or duty factor depending upon luminous intensity
12/07/1999US5998936 Fire-initiation-safe lighting system
12/07/1999US5998930 Electronic ballast with two-step boost converter and method
12/07/1999US5998812 Amplifying-gate thyristor with an increased hold current
12/07/1999US5997162 Horizontal HID vehicle headlamp with magnetic deflection
12/07/1999CA2076815C Loop applicator for high frequency electrodeless lamps
12/02/1999WO1999062305A1 Apparatus for supplying electrical power to a discharge lamp
12/02/1999WO1999062304A1 Starter for a gas discharge lamp, especially a high pressure gas discharge lamp for automobile headlights
12/02/1999DE19824423A1 Schaltungsanordnung zum Betreiben einer UV-Lampe in einem Entkeimungsreaktor Circuit arrangement for operating a UV lamp in a Entkeimungsreaktor
12/02/1999DE19506977C2 Gate-Treiberschaltung Gate drive circuit
12/01/1999EP0961075A2 Projector
12/01/1999EP0960433A1 High-pressure discharge lamp
12/01/1999EP0880873A4 Inductively powered lighting
12/01/1999CN1237323A Circuit structure
12/01/1999CN1237322A Circuit arrangement
12/01/1999CN1237321A Circuit arrangement
12/01/1999CN1237320A Circuit arrangement
12/01/1999CN1237319A Circuit arrangement
12/01/1999CN1047040C 逆变器交流电源 AC Power Inverter
12/01/1999CN1047038C Circuit arrangement
11/1999
11/30/1999US5995398 Power supply device
11/30/1999US5994849 Method for operating a lighting system and suitable lighting system therefor
11/30/1999US5994848 Triac dimmable, single stage compact flourescent lamp
11/30/1999US5994847 Electronic ballast with lamp current valley-fill power factor correction
11/30/1999US5994846 Buck converter switching scheme
11/30/1999US5994843 Light source lighting device
11/30/1999US5993078 Camera with lens barrier apparatus
11/26/1999CA2272674A1 Circuit for energizing cold-cathode fluorescent lamps
11/25/1999WO1999060825A1 Electronic ballast with filament cut-out
11/25/1999WO1999060804A1 Network based electrical control system with distributed sensing and control
11/25/1999WO1999060803A1 Multiple sensor lux reader and averager
11/25/1999WO1999060538A1 Network based multiple sensor and control device with temperature sensing and control
11/25/1999WO1999060354A1 Network based multiple sensor device
11/25/1999DE19822525A1 Gas discharge energy saving lamp
11/25/1999CA2332871A1 Multiple sensor lux reader and averager
11/25/1999CA2332866A1 Network based electrical control system with distributed sensing and control
11/25/1999CA2332859A1 Network based multiple sensor and control device with temperature sensing and control
11/25/1999CA2332858A1 Network based multiple sensor device
11/24/1999EP0958716A1 Method for determining the resonance frequency of an electric resonant circuit
11/24/1999EP0958715A1 Ballast
11/24/1999CN2350941Y Electronic ballast for DC metal halide lamp
11/24/1999CN1236534A Method for producing impulse voltage sequences to operate discharge lamps and circuit device thereof
11/23/1999US5990634 Dynamic range dimmer for gas discharge lamps
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