| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 06/10/1987 | CN86103870A Programmable multiple controller on wall |
| 06/09/1987 | US4672522 Power factor correcting network |
| 06/09/1987 | US4672300 Direct current power supply using current amplitude modulation |
| 06/09/1987 | US4672273 Electronic flash device for camera |
| 06/09/1987 | US4672271 Apparatus and method for automatic operation of a high pressure mercury arc lamp |
| 06/04/1987 | DE3542412A1 Multiple light system |
| 06/03/1987 | EP0224301A2 Circuit arrangement for the AC operation of discharge lamps |
| 06/03/1987 | CN86206820U Electronic ballast for two 40w fluorescence lamps |
| 06/02/1987 | US4670832 Resonant inverter having improved control at enablement |
| 05/27/1987 | EP0223225A2 Glow discharge starter |
| 05/27/1987 | EP0222824A1 Apparatus and method for forming segmented luminosity in gas discharge tubes |
| 05/27/1987 | DE3541556A1 Circuit arrangement for starting and operating low-pressure and high-pressure discharge lamps |
| 05/26/1987 | US4668906 Switched resistor regulator |
| 05/21/1987 | WO1987003161A1 A lamp assembly |
| 05/20/1987 | EP0222441A1 DC-AC converter for igniting and supplying a discharge lamp |
| 05/20/1987 | EP0221972A1 Protection circuit for an inverter. |
| 05/20/1987 | CN85202831U Printed electric resistance |
| 05/19/1987 | US4667133 Power-limited lighting system |
| 05/19/1987 | US4667132 Electronic transformer system for neon lamps |
| 05/19/1987 | US4667131 Protection circuit for fluorescent lamp ballasts |
| 05/13/1987 | EP0221870A1 A lamp assembly |
| 05/13/1987 | EP0221864A2 A fitting for compact electric discharge lamps |
| 05/12/1987 | US4665346 Starting control circuit for a high pressure lamp |
| 05/07/1987 | DE3607109C1 Ballast for discharge lamps |
| 05/07/1987 | DE3538533A1 Fluorescent-lamp ballast |
| 05/06/1987 | EP0220675A1 Starting and operating apparatus of high-pressure discharge lamp capable of battery voltage compensation |
| 05/06/1987 | EP0220598A1 Light sources control unit |
| 05/05/1987 | US4663571 Electronic ballast with ground-fault protection |
| 05/05/1987 | US4663570 High frequency gas discharge lamp dimming ballast |
| 05/05/1987 | US4663569 Energy management/dimming system and control |
| 05/05/1987 | US4663566 Fluorescent tube ignitor |
| 04/29/1987 | EP0219999A1 Electric circuit arrangement |
| 04/29/1987 | CN85204429U Light adjustable power saving, longlife, fluorescent lamp without ballast and starter |
| 04/28/1987 | US4661746 Electrodeless low-pressure discharge lamp |
| 04/28/1987 | US4661745 Rapid-start fluorescent lamp power reducer |
| 04/28/1987 | US4660956 Electronic flash device |
| 04/23/1987 | DE3537517A1 Circuit arrangement for operating gas-discharge lamps |
| 04/21/1987 | US4659965 High pressure discharge lamp with thermal switch |
| 04/16/1987 | DE3601725A1 Mains-operated, rapid-starting fluorescent lamp system |
| 04/16/1987 | DE3536300A1 Circuit arrangement for starting and operating a fluorescent lamp |
| 04/15/1987 | CN86101777A Super efficiency barretter |
| 04/14/1987 | US4658343 Fluorescent lamp driver |
| 04/14/1987 | US4658184 Method of triggering a high pressure sodium vapor lamp and sodium vapor lamp with improved triggering |
| 04/09/1987 | WO1987002143A1 Testing apparatus |
| 04/08/1987 | CN86200860U Fast starter for light adjustable fluorescent lamp |
| 04/07/1987 | US4656397 Method and apparatus for controlling flash tube discharge |
| 04/07/1987 | US4656395 Accessory circuit structure for a low-pressure discharge lamp, typically fluorescent lamp |
| 04/07/1987 | CA1220249A1 Frequency stabilized automatic gain controlled ballast system |
| 04/02/1987 | DE3533548A1 Fluorescent lamp ballast unit |
| 04/01/1987 | EP0215931A1 Device for the individual adjustment of the intensity of several spectral lamps |
| 04/01/1987 | CN85106944A High efficiency, engery saving ballast for fluorescent |
| 03/31/1987 | US4654774 Low ripple, high power factor a-c to d-c power supply |
| 03/31/1987 | US4654563 Fluorescent lamp ballast |
| 03/31/1987 | US4654562 Flashing lamp unit |
| 03/31/1987 | CA1219897A1 Method and apparatus for generating ultraviolet radiation |
| 03/25/1987 | CN86205816U Safe and anti-explosion flurescent lamp with two tubes |
| 03/25/1987 | CN86202733U Ballst for two tubes |
| 03/25/1987 | CN86202507U Easy starting and long life h lamp |
| 03/24/1987 | US4652797 Electronic ballast with high power factor |
| 03/24/1987 | US4652108 Driving device for illuminating lamp of flash apparatus |
| 03/17/1987 | US4651271 Power supply having tuned radio frequency circuit |
| 03/17/1987 | US4651060 Method and apparatus for dimming fluorescent lights |
| 03/17/1987 | US4651059 High-frequency power-limited lighting system |
| 03/12/1987 | WO1987001554A1 Solid state inverter including a multiple core transformer |
| 03/12/1987 | WO1987001553A1 A high intensity discharge lamp self-adjusting ballast system sensitive to the radiant energy or heat of the lamp |
| 03/12/1987 | WO1987001552A1 Switched capacitive ballasts for discharge lamps |
| 03/11/1987 | EP0213967A2 Apparatus for starting and operating fluorescent lamp and auxiliary ballast systems at reduced power levels |
| 03/11/1987 | CN86204279U Relay circulating mode frequently flashing controller |
| 03/10/1987 | US4649322 Energizing arrangement for controlling the luminous intensity of at least one discharge lamp and use of such arrangement |
| 03/10/1987 | US4649321 Gate capacitance latch for DC to AC converters |
| 03/10/1987 | US4649320 Thermal protector for circular fluorescent lamp assembly |
| 03/10/1987 | US4649319 Gas discharge lamp starter |
| 03/10/1987 | CA1219035A1 Direct current ballast circuit for arc discharge lamp |
| 03/10/1987 | CA1219034A1 Load switching arrangement for gas discharge lamp circuit |
| 03/04/1987 | EP0212892A1 An electrical control circuit for controlling a variable AC load |
| 03/04/1987 | EP0212817A1 Improvements in or relating to invertors |
| 03/04/1987 | EP0212740A2 Apparatus for starting and operating gas discharge lamps |
| 03/04/1987 | CN86203701U No-filament daylight lamp and starter |
| 03/04/1987 | CN86106457A Electronic ballast of alternating fluorescent lamp |
| 03/03/1987 | US4647820 Discharge lamp ignition and supply circuit having a PTC resistor |
| 03/03/1987 | US4647819 Metal vapor lamp starting and operating apparatus |
| 03/03/1987 | US4647817 Discharge lamp starting circuit particularly for compact fluorescent lamps |
| 02/25/1987 | EP0211459A1 Ignition circuit for high pressure arc discharge lamps |
| 02/25/1987 | CN86202047U Multipurpose daylight reading-lamp |
| 02/24/1987 | US4646050 Hermetically sealed thin walled envelope containing an ionizable medium |
| 02/24/1987 | US4646049 Glow discharge starter containing thorium for improving dark starting |
| 02/24/1987 | US4645976 Discharge lamp circuit with protected PTC resistor |
| 02/24/1987 | US4645967 Electrodeless low-pressure gas discharge lamp |
| 02/17/1987 | US4644459 Electronic inverter having magnitude-controllable output |
| 02/17/1987 | US4644228 Series-resonant parallel-loaded fluorescent lamp ballast |
| 02/17/1987 | US4644227 Three lamp ballast |
| 02/17/1987 | US4643571 Current control system for spectrophotometers |
| 02/11/1987 | CN86204105U Varying-voltage type current-limiting glow start device for fluorescent lamp |
| 02/10/1987 | US4642526 Fluorescent object recognition system having self-modulated light source |
| 02/10/1987 | US4642525 Transient control circuit for fluorescent lamp systems |
| 02/10/1987 | US4642521 Compact igniter for discharge lamps |
| 02/10/1987 | CA1217808A Temperature sensitive ballast circuit for a fluorescent lamp |
| 02/04/1987 | EP0210830A1 High frequency energy saving ballast |
| 02/04/1987 | EP0210310A1 Gain controlled electronic ballast system |
| 02/04/1987 | CN86203933U Changer with automatic time delay for fluorescent lamp |