| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 12/18/1984 | US4489370 High capacity dc-dc voltage converter suitable for charging electronic camera flash lamps |
| 12/18/1984 | US4489255 Discharge lamp starter and starting and operating circuitry |
| 12/11/1984 | US4488104 Power source apparatus for a flash lamp used in a pulse laser apparatus |
| 12/11/1984 | US4488092 Illumination mode selecting device for illumination lamp |
| 12/11/1984 | US4488091 High intensity discharge lamp |
| 12/11/1984 | US4488090 Advertising sign system |
| 12/11/1984 | US4488088 Starter circuit for lamps with high reignition voltages |
| 12/11/1984 | US4488087 Discharge lamp lighting device |
| 12/11/1984 | CA1179430A1 Solid state ballast |
| 12/11/1984 | CA1179402A1 Apparatus for operating a gaseous discharge lamp |
| 12/06/1984 | WO1984004866A1 Electronic photoflash control circuit |
| 12/05/1984 | EP0127101A1 Inverter for feeding discharge lamps |
| 12/04/1984 | USRE31758 High efficiency push-pull inverters |
| 12/04/1984 | US4486691 Sequential capacitive discharge circuit for flash lamps |
| 12/04/1984 | US4486690 Test flash device for flash discharger |
| 12/04/1984 | US4486689 Emergency lighting apparatus and systems |
| 11/28/1984 | EP0126556A1 Method of starting and operating a gas discharge lamp, and power supply and electronic ballast therefor |
| 11/27/1984 | US4485434 Power supply for arc lamps |
| 11/27/1984 | US4485333 Vapor discharge lamp assembly |
| 11/27/1984 | US4485332 Method & apparatus for cooling electrodeless lamps |
| 11/27/1984 | CA1178651A1 Electric device comprising at least one low-pressure mercury vapour discharge tube |
| 11/27/1984 | CA1178650A1 Discharge lamp ballast circuit |
| 11/27/1984 | CA1178649A1 Starter and discharge lamp starting circuit |
| 11/27/1984 | CA1178647A1 Lightweight electronic ballast for fluorescent lamps |
| 11/20/1984 | US4484295 Control circuit and method for varying the output of a waveform generator to gradually or rapidly vary a control signal from an initial value to a desired value |
| 11/20/1984 | US4484109 Ignition system for gas discharge lamps |
| 11/20/1984 | US4484108 High frequency ballast-ignition system for discharge lamps |
| 11/20/1984 | US4484107 Discharge lamp lighting device and system |
| 11/20/1984 | US4483605 Circuit for a computerized photoflash control |
| 11/14/1984 | EP0124864A1 Power control apparatus with optical isolation feedback means |
| 11/14/1984 | EP0124735A1 Operating circuit for electric discharge lamp |
| 11/13/1984 | US4482844 Lamp dimmer |
| 11/13/1984 | CA1177876A1 Pulse injection starting for high intensity discharge metal halide lamps |
| 11/13/1984 | CA1177875A1 Starting and operating circuit for gaseous discharge lamps |
| 11/07/1984 | EP0124368A1 Electric discharge lamp with thermal switch |
| 11/07/1984 | EP0124209A1 Electronic ballast-inverter circuit |
| 11/07/1984 | EP0123963A2 Circuit arrangement for controlling the intensity of the light of fluorescent lamps |
| 11/06/1984 | US4481460 Inverter with charging regulator having a variable keying ratio |
| 11/06/1984 | US4481446 Metal vapor discharge lamp |
| 11/06/1984 | CA1177525A1 Fluorescent light unit with dimmable light level |
| 11/06/1984 | CA1177524A1 Fluorescent light unit with dual light levels |
| 10/30/1984 | US4480300 For two semiconductor switches |
| 10/30/1984 | US4480214 Starter circuit for gaseous discharge lamp |
| 10/30/1984 | US4480211 Flash lamp and circuitry for use with an incandescent light |
| 10/30/1984 | CA1177112A1 Starting and operating circuit for gaseous discharge lamps |
| 10/30/1984 | CA1177111A1 Lamp dimmer |
| 10/23/1984 | US4479076 Power saving device for electronic flash |
| 10/23/1984 | CA1176705A1 Inductively coupled pulse feedback generator |
| 10/23/1984 | CA1176697A1 Conductive ink for flash lamp array circuit |
| 10/23/1984 | CA1176696A1 Flash lamp array having composite circuit board and electric shield member |
| 10/23/1984 | CA1176684A1 Glow-discharge starter with two bimetallics and a reversible hydrogen getter |
| 10/17/1984 | EP0121917A1 Electronic device for driving fluorescent lamps |
| 10/16/1984 | US4477796 Spatial acquisition flash beacon |
| 10/16/1984 | US4477748 Solid state ballast |
| 10/16/1984 | US4477747 Lamp circuit for automobile |
| 10/16/1984 | CA1176304A1 Ac regulator system for quartz iodine lamps |
| 10/16/1984 | CA1176303A1 Electronic inverter ballasting system |
| 10/09/1984 | US4476414 Capacitor ballast |
| 10/09/1984 | CA1175948A1 Feedback control system for applying ac power to ballasted lamps |
| 10/09/1984 | CA1175886A1 Adjustable electrical power control for gas discharge lamps and the like |
| 10/03/1984 | EP0120405A1 Ignition device for a low-pressure discharge lamp |
| 10/02/1984 | US4475065 Method of operating HID sodium lamp to minimize lamp voltage variation throughout lamp life |
| 10/02/1984 | US4475064 Means for controlling lumen output in power consumption of phosphor excitable lamps |
| 10/02/1984 | US4475062 Economy device for fluorescent lighting fixtures |
| 09/26/1984 | EP0119584A1 Lighting circuit for electric discharge lamp |
| 09/25/1984 | US4473778 Discharge lamp starting device |
| 09/18/1984 | US4472661 High voltage, low power transformer for efficiently firing a gas discharge luminous display |
| 09/18/1984 | US4472015 Multifunction connector |
| 09/18/1984 | CA1174771A1 Two-wire electronic dimming ballast for gaseous discharge lamps |
| 09/18/1984 | CA1174770A1 Two-wire ballast for fluorescent tube dimming |
| 09/12/1984 | EP0118309A2 Semi conductor device and starter circuit for a fluorescent tube lamp, provided with such a semi conductor device |
| 09/11/1984 | US4471269 Circuit arrangement for operating a high-pressure gas discharge lamp |
| 09/11/1984 | US4471268 Lighting unit having power supply with improved switching means |
| 09/11/1984 | CA1174267A1 Electric flash device |
| 09/04/1984 | US4469991 Method and apparatus for improving flashlamp performance |
| 09/04/1984 | US4469990 Electronic flash device |
| 09/04/1984 | US4469989 Electric flash apparatus |
| 09/04/1984 | US4469988 Electronic ballast having emitter coupled transistors and bias circuit between secondary winding and the emitters |
| 09/04/1984 | US4469981 Circuit for the operating of gas discharge lamps |
| 09/04/1984 | CA1173979A1 Two-wire electronic dimming ballast for fluorescent lamps |
| 08/29/1984 | EP0116987A1 Irradiation device |
| 08/28/1984 | US4468592 Strobo apparatus |
| 08/22/1984 | EP0116302A2 Converter |
| 08/21/1984 | US4467248 Variable electronic flash light equipment |
| 08/21/1984 | US4467247 High frequency fluorescent lamp circuit |
| 08/21/1984 | CA1173101A1 Lighting apparatus |
| 08/21/1984 | CA1173100A1 Electric flash apparatus |
| 08/14/1984 | US4465954 Discharge lamp starting and operating circuit |
| 08/08/1984 | EP0050132B1 Supply apparatus |
| 08/07/1984 | US4464610 Modular lighting control with circulating inductor |
| 08/07/1984 | US4464609 Flash lighting unit for a camera |
| 08/07/1984 | US4464608 Circuit for controlling optical apparatus such as an ophthalmoscope |
| 08/07/1984 | US4464607 Lighting unit |
| 08/07/1984 | US4464606 Pulse width modulated dimming arrangement for fluorescent lamps |
| 08/01/1984 | EP0114370A1 Method of operating a gas-discharge lamp |
| 07/31/1984 | US4463287 Apparatus for controlling output illumination level of gas discharge lamps |
| 07/31/1984 | US4463286 Lightweight electronic ballast for fluorescent lamps |
| 07/31/1984 | US4463285 DC Ballasting means for fluorescent lamps |
| 07/31/1984 | US4463282 Flash lamp |
| 07/25/1984 | EP0113855A1 Limited-power fluorescent ceiling lighting system |