| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 07/03/1985 | EP0146683A1 DC-AC conventer |
| 07/03/1985 | EP0146599A1 Electronic photoflash control circuit. |
| 07/03/1985 | EP0016756B1 Circuit for energising a gas discharge lamp |
| 07/02/1985 | US4527099 Control circuit for gas discharge lamps |
| 07/02/1985 | US4527098 Discrete starter for HID lamp |
| 07/02/1985 | CA1189897A1 Power supply for arc discharge devices |
| 06/26/1985 | EP0098285A4 Electronic high frequency controlled device for operating gas discharge lamps. |
| 06/25/1985 | US4525650 Starting and operating method and apparatus for discharge lamps |
| 06/25/1985 | US4525649 Drive scheme for a plurality of flourescent lamps |
| 06/25/1985 | US4525648 DC/AC Converter with voltage dependent timing circuit for discharge lamps |
| 06/25/1985 | US4524761 Endoscope apparatus |
| 06/20/1985 | WO1985002749A1 Circuit arrangement for the operation of fluorescent or ultra-violet low voltage discharge lamps |
| 06/19/1985 | EP0145072A2 Method of operating a high-pressure discharge lamp |
| 06/19/1985 | EP0144415A1 Device for creating a variable luminous atmosphere |
| 06/18/1985 | US4524305 Solid state regulated power supply system for cold cathode luminescent tube |
| 06/18/1985 | US4524289 Flash lamp power supply with reduced capacitance requirements |
| 06/18/1985 | US4523830 Automatic control type electronic flash apparatus |
| 06/18/1985 | US4523795 Discharge lamp operating apparatus and method |
| 06/18/1985 | CA1189135A1 Lighting unit |
| 06/18/1985 | CA1189134A1 Multiple light level fluorescent lamp unit |
| 06/18/1985 | CA1189133A1 Circuit for starting and operating fluorescent lamps |
| 06/18/1985 | CA1189132A1 Isolator for use with frequency responsive switching circuit |
| 06/12/1985 | EP0143923A1 Control circuit for electronic flash |
| 06/12/1985 | EP0143900A1 Auxiliary device for regulating the intensity of low voltage fluorescent lamps |
| 06/12/1985 | EP0143884A1 Energy-saving apparatus for dimming discharge lamps |
| 06/11/1985 | US4523265 Process and device for eliminating the disturbances related to the fluctuations of the load in chopped power supplies |
| 06/11/1985 | US4523131 Dimmable electronic gas discharge lamp ballast |
| 06/11/1985 | US4523130 Four lamp modular lighting control |
| 06/11/1985 | US4523129 Modular lighting control with circulating inductor |
| 06/11/1985 | US4523128 Remote control of dimmable electronic gas discharge lamp ballasts |
| 06/11/1985 | CA1188725A1 Electronic ballast for a discharge lamp |
| 05/29/1985 | EP0142840A1 High pressure discharge lamp with thermal switch |
| 05/28/1985 | US4520295 Step-wise dimmer control circuit for a discharge lamp |
| 05/28/1985 | US4520294 High pressure metal vapor discharge lamp |
| 05/28/1985 | US4519683 Electronic flash apparatus |
| 05/22/1985 | EP0142063A1 Lighting apparatus for an electric discharge lamp |
| 05/21/1985 | US4518963 Automatic indicator for tower lights |
| 05/21/1985 | US4518895 Mechanism and method for controlling the temperature and output of a fluorescent lamp |
| 05/21/1985 | US4518237 Indicator for proper or improper exposure by automatic electronic flash |
| 05/21/1985 | CA1187545A1 Hid lamp power supply |
| 05/21/1985 | CA1187544A1 Discharge lamp operating circuit |
| 05/14/1985 | US4517499 Flexible light |
| 05/14/1985 | US4517498 Sequence start lamp ballast with current spike suppression means |
| 05/14/1985 | US4517496 Lighting apparatus for a discharge lamp |
| 04/30/1985 | CA1186366A1 Means and method for controlling lumen output and power consumption of phosphor excitable lamps |
| 04/23/1985 | US4513364 Thermally controllable variable frequency inverter |
| 04/23/1985 | US4513227 High intensity discharge (HID) lamp starting apparatus |
| 04/23/1985 | US4513226 Electronic ballast-inverter circuit |
| 04/23/1985 | US4513225 Fluorescent lamp series system |
| 04/23/1985 | US4513224 Fluorescent-lighting-system voltage controller |
| 04/16/1985 | US4511823 Reduction of harmonics in gas discharge lamp ballasts |
| 04/16/1985 | US4511195 Device for starting and operating gas discharge tubes |
| 04/16/1985 | CA1185649A1 Power supply for arc lamps |
| 04/09/1985 | US4509844 Photometric circuit in a photographic flash device |
| 04/03/1985 | EP0082879A4 Line operated fluorescent lamp inverter ballast. |
| 04/02/1985 | US4508996 High frequency supply system for gas discharge lamps and electronic ballast therefor |
| 03/28/1985 | WO1985001400A1 Minimization of harmonic contents for mains operated solid state inverters driving gas discharge lamps |
| 03/26/1985 | US4507698 Inverter-type ballast with ground-fault protection |
| 03/26/1985 | US4507569 Electrical control system and driver |
| 03/26/1985 | CA1184593A1 Electronic fluorescent lamp ballast |
| 03/20/1985 | EP0134282A1 Electronic ballast circuit |
| 03/20/1985 | EP0134273A1 Pulse light stabilization for color spectrophotometric instrumentation |
| 03/20/1985 | EP0134207A1 Electronic ballast and lighting system utilizing it |
| 03/19/1985 | US4506195 Apparatus for operating HID lamp at high frequency with high power factor and for providing standby lighting |
| 03/19/1985 | CA1184245A1 Control circuit for a dc-ac converter |
| 03/19/1985 | CA1184238A1 Direct current power source for an electric discharge lamp |
| 03/19/1985 | CA1184237A1 Discharge lamp lighting device and system |
| 03/14/1985 | WO1985001180A1 Inverter circuit with a control circuit for leading transistors more effectively into a turned-off state |
| 03/13/1985 | EP0134050A1 Circuit arrangement for operating high-pressure gas discharge lamps |
| 03/13/1985 | EP0134044A1 Circuit arrangement for starting and operating a discharge lamp |
| 03/12/1985 | US4504768 Electrodeless lamp using a single magnetron and improved lamp envelope therefor |
| 03/12/1985 | US4504445 Method and apparatus for generating ultraviolet radiation and ozone |
| 03/05/1985 | US4503364 Programming and control device for modified lead ballast for HID lamps |
| 03/05/1985 | US4503363 Electronic ballast circuit for fluorescent lamps |
| 03/05/1985 | US4503362 Frequency stabilized, gain controlled ballast system |
| 03/05/1985 | US4503361 Electronic ballast system |
| 03/05/1985 | US4503359 Discharge lamp lighting device |
| 02/28/1985 | WO1985000950A1 Flash tube employing multiple flashes |
| 02/26/1985 | US4501994 Ballast modifying device and lead-type ballast for programming and controlling the operating performance of an hid sodium lamp |
| 02/26/1985 | US4501992 Energy conserving instant-start series-sequence fluorescent lamp system and fluorescent lamp with overcurrent protection |
| 02/19/1985 | US4500812 Electronic ballast circuit |
| 02/19/1985 | CA1182856A1 Power supply |
| 02/13/1985 | EP0064493B1 Device for controlling discharge lamps for optical scanning |
| 02/12/1985 | US4499452 Modulation installation for sector supply of charge elements |
| 02/06/1985 | EP0058683B1 Installation for starting a discharge lamp with heated electrodes |
| 02/05/1985 | US4498031 Variable frequency current control device for discharge lamps |
| 01/29/1985 | US4496880 Fluorescent lamp ballast |
| 01/29/1985 | CA1181796A1 Generator for use with ionic conduction lamps |
| 01/23/1985 | EP0132008A2 Power supply arrangement provided with a voltage converter for igniting and feeding a gas- and/or vapour discharge lamp |
| 01/23/1985 | EP0131965A2 Low-pressure mercury vapor discharge lamp |
| 01/22/1985 | US4495446 Lighting unit with improved control sequence |
| 01/17/1985 | WO1985000264A1 Device for creating a variable luminous atmosphere |
| 01/15/1985 | US4494044 Computer type electronic flash device |
| 01/15/1985 | US4494010 Programmable power control apparatus responsive to load variations |
| 01/15/1985 | CA1181126A1 Discharge lamp starting and operating circuit |
| 01/08/1985 | US4492899 Solid state regulated power supply system for cold cathode luminous tube |
| 01/08/1985 | US4492897 Means for limiting and controlling the current of a discharge lamp |
| 01/02/1985 | CA1180214A Adjustable light collector and sampler therefor |
| 12/27/1984 | EP0128988A1 Method and device for eliminating interferences due to load variation in switched-mode power supplies |
| 12/18/1984 | US4489415 Pulse pumping an optically pumped laser |