| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 10/14/1987 | CN87200916U Multipurpose electronic energy-storing lamp |
| 10/14/1987 | CN87200834U Starting device for dc fluorescent lamp set |
| 10/14/1987 | CN87200473U Power-saving ballast |
| 10/14/1987 | CN87200076U Power-saving ballast of fluorescent lamp without starter |
| 10/13/1987 | US4700287 Dual-mode inverter power supply |
| 10/13/1987 | US4700113 Variable high frequency ballast circuit |
| 10/13/1987 | US4700112 Fluorescent lamp lighting circuit |
| 10/13/1987 | US4700111 High frequency ballast circuit |
| 10/13/1987 | CA1228115A1 Energizing circuit for fluorescent lamps |
| 10/08/1987 | DE3704441A1 Electronic starter for a high-pressure discharge lamp |
| 10/08/1987 | DE3611036A1 Power supply unit for the conversion, without a transformer, of a mains AC voltage into at least one DC voltage, compensated for operation of low-pressure discharge lamps in the power supply unit and battery operation with a supply for emergency lighting |
| 10/07/1987 | EP0240312A2 Stabilized electric power apparatus for generating direct and alternating current simultaneously in one transformer |
| 10/07/1987 | EP0240080A1 Circuit arrangement for operating a high-pressure sodium discharge lamp |
| 10/07/1987 | EP0240049A1 Circuit arrangement for operating a high-pressure descharge lamp |
| 10/07/1987 | EP0239793A1 Circuit arrangement for operating low-pressure discharge lamps |
| 10/07/1987 | CN86101028A Electricity-saving fluorescent lamp ballast (esflb) |
| 10/06/1987 | US4698741 High efficiency high voltage power supply for gas discharge devices |
| 10/06/1987 | US4698554 Variable frequency current control device for discharge lamps |
| 10/06/1987 | US4698553 Electronic power supply system |
| 10/06/1987 | US4697907 Flash photographing system |
| 10/06/1987 | US4697906 Electric flash device |
| 10/06/1987 | CA1227829A1 Bimetal circuit breaker with leg portions of unequal length |
| 09/30/1987 | EP0239420A1 High frequency ballast for gaseous discharge lamps |
| 09/29/1987 | CA1227528A1 Energizing arrangement for controlling the luminous intensity of at least one discharge lamp and use of such arrangement |
| 09/29/1987 | CA1227527A1 Dimmable electronic gas discharge lamp ballast |
| 09/24/1987 | DE3609582A1 Ballast for discharge lamps |
| 09/22/1987 | US4695803 HID lamp ballast tester |
| 09/22/1987 | US4695771 Ignition circuit for high pressure arc discharge lamps |
| 09/22/1987 | US4695770 Circuit for switching current in an inductive load |
| 09/22/1987 | US4695694 Structure for minimizing microwave leakage |
| 09/17/1987 | DE3608362A1 Ballast for discharge lamps |
| 09/16/1987 | EP0236300A1 Solid state inverter including a multiple core transformer |
| 09/15/1987 | US4694224 Lighting apparatus for an electric discharge lamp |
| 09/15/1987 | CA1226893A1 Arrangement provided with a dc/ac converter for igniting and feeding a gas- and/or vapour discharge lamp |
| 09/12/1987 | CN86208631U Electric-power saving fluorescent lamp |
| 09/12/1987 | CN86204291U Filamentless fluorescent lamp tube |
| 09/09/1987 | EP0235317A1 Flash lamp circuit |
| 09/09/1987 | EP0235174A1 A high intensity discharge lamp self-adjusting ballast system sensitive to the radiant energy or heat of the lamp |
| 09/09/1987 | EP0105877B1 Pump for liquids and gases |
| 09/09/1987 | CN86209471U Electronic starter for fluorescent lamp |
| 09/09/1987 | CN86206276U Universal socket for h-shaped lamps |
| 09/08/1987 | US4692668 Strobe adaptor for automotive timing light |
| 09/08/1987 | US4692667 Parallel-resonant bridge-inverter fluorescent lamp ballast |
| 09/02/1987 | EP0234195A1 Ballast circuit |
| 09/01/1987 | US4691146 Method for forming special color effects from a fluorescent lamp which is supplied with electrical power and a device for carrying out the method |
| 08/27/1987 | WO1987005161A1 Control of large volume gaseous electric discharge system |
| 08/26/1987 | EP0233605A2 Frequency modulation ballast circuit |
| 08/26/1987 | CN86211047U Fluorescent lamp with luminous starter |
| 08/25/1987 | US4689524 Fluorescent lamp ballast |
| 08/25/1987 | US4689523 Optical cleaning system for removing matter from underwater surfaces |
| 08/18/1987 | US4687971 Power supply for discharge lamp |
| 08/18/1987 | CA1225693A1 Dc/ac converter for the ignition and the supply with alternating current of a gas-and/or vapour discharge lamp |
| 08/13/1987 | WO1987004891A1 An electrical preswitching device for fluorescent tubes which provides a distortion free load of the net |
| 08/13/1987 | WO1987004889A1 Ballast for ionic conduction lamps |
| 08/13/1987 | DE3604134A1 Power supply unit for operation of gas-discharge lamps |
| 08/12/1987 | CN87101673A Fluorescent lamp transducer with protective circuit |
| 08/12/1987 | CN86206133U Contact-reliable starter seat for fluorescent lamp |
| 08/11/1987 | US4686428 High intensity discharge lamp self-adjusting ballast system with current limiters and a current feedback loop |
| 08/11/1987 | US4686427 Fluorescent lamp dimming switch |
| 08/11/1987 | US4686424 Emergency lighting circuits |
| 08/11/1987 | US4686421 Glow discharge starter and arc discharge lamp containing same |
| 08/11/1987 | CA1225430A1 Gas discharge lamp dimming system employing switching contact inputs |
| 08/06/1987 | DE3603084A1 Circuit for operating a fluorescent lamp |
| 08/05/1987 | CN86206523U Integral bracket for fluorescent tube |
| 08/05/1987 | CN86201416U Multi-purpose power-saving ballast for fluorescent lamp |
| 08/04/1987 | US4684852 Flash lamp circuit |
| 08/04/1987 | US4684851 DC/AC converter for feeding a metal vapor discharge tube |
| 08/04/1987 | US4684850 Source of DC voltage |
| 07/28/1987 | US4683404 Starting circuit and apparatus for high pressure sodium lamps |
| 07/22/1987 | CN86209023U Fluorescent lamp switch device without starter |
| 07/22/1987 | CN86203084U Ac and dc preheating type fluorescent lamp |
| 07/21/1987 | US4682084 High intensity discharge lamp self-adjusting ballast system sensitive to the radiant energy or heat of the lamp |
| 07/21/1987 | US4682083 Fluorescent lamp dimming adaptor kit |
| 07/21/1987 | US4682082 Gas discharge lamp energization circuit |
| 07/21/1987 | US4682080 Discharge lamp operating device |
| 07/21/1987 | CA1224521A1 Rapid start fluorescent lamp circuits with disconnect sockets |
| 07/15/1987 | CN86209408U Starter enabling fluorescent lamp to prolong life and regenerate |
| 07/15/1987 | CN86209088U Power-saving and long life fluorescent lamp |
| 07/14/1987 | US4680509 Method and apparatus for starting high intensity discharge lamps |
| 07/14/1987 | US4680508 Load control circuit |
| 07/08/1987 | EP0228123A1 Circuit arrangement suitable for operating a high-pressure discharge lamp |
| 07/07/1987 | US4678968 High intensity discharge lamp starting and operating apparatus |
| 07/07/1987 | CA1223919A1 Electric generator system for portable floodlighting equipment |
| 07/02/1987 | WO1987004038A1 Wide band, high efficiency simmer power supply for a laser flashlamp |
| 07/02/1987 | WO1987004037A1 Simplified gaseous discharge device simmering circuit |
| 07/01/1987 | CN86202279U Electronic ballast for fluorescent lamp |
| 07/01/1987 | CN86108235A Circuit arrangement suitable for operating a high-pressure discharge lamp |
| 06/30/1987 | US4677348 Combined ignitor and transient suppressor for gaseous discharge lighting equipment |
| 06/30/1987 | US4677347 Electronic flash |
| 06/30/1987 | US4677346 Drive and control circuits for gate capacitance latch with refresh lamp ballast |
| 06/30/1987 | US4677345 Inverter circuits |
| 06/24/1987 | EP0226256A1 Charging circuit for energy storage capacitors |
| 06/23/1987 | US4675579 Coupling of carrier signal from power line |
| 06/23/1987 | US4675576 High-reliability high-efficiency electronic ballast |
| 06/23/1987 | CA1223302A1 Method of operating a high-pressure metal vapour discharge lamp and circuit arrangement for carrying out this method |
| 06/23/1987 | CA1223301A1 Irradiation device |
| 06/19/1987 | DE3544314A1 Light having at least two fluorescent lamps |
| 06/19/1987 | DE3544170A1 Method for the non destructive measurement of the filling pressure of the basic gas filled into a metal vapour discharge lamp |
| 06/16/1987 | US4673844 Starter circuit for a fluorescent tube lamp |
| 06/10/1987 | EP0224980A1 Device and process for lighting a fluorescent discharge lamp |