| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 06/07/1988 | CA1237837A1 Power supplies for electroluminescent panels |
| 06/01/1988 | CN87206947U Double-purpose energy-saving fluorescent light with and without light regulation |
| 05/31/1988 | US4748551 Constant current supply for a varying resistance |
| 05/31/1988 | US4748462 Starting arrangement for flash device |
| 05/31/1988 | US4748383 DC-AC converter for igniting and supplying a discharge lamp |
| 05/31/1988 | US4748382 Electric circuit arrangement |
| 05/31/1988 | US4748381 Circuit arrangement for A.C. operation of gas discharge lamps |
| 05/25/1988 | EP0268043A2 DC power supply circuit for fluorescent lamps |
| 05/25/1988 | CN87211252U Ballast terminal |
| 05/24/1988 | US4746841 Fluorescent lamp operating device |
| 05/19/1988 | WO1988003702A1 Fluorescent discharge tube with capacitive ballast, standardized cap, forming a compact assembly |
| 05/19/1988 | DE3637645A1 Flash device for photographic purposes, in particular flash lamp or generator for studio and outdoor pictures |
| 05/18/1988 | CN87107332A High frequency starting and current-limiting method and its apparatus for a gas discharge lamp |
| 05/17/1988 | US4745539 Controllable frequency converter |
| 05/17/1988 | US4745537 Low dissipation power converter |
| 05/17/1988 | US4745343 Panoramic optical system with very sharp beam control |
| 05/17/1988 | US4745342 Method and apparatus for driving neon tube to form luminous bubbles and controlling the movement thereof |
| 05/17/1988 | US4745341 Rapid restrike starter for high intensity discharge lamps |
| 05/17/1988 | US4745340 Electric generator system for portable floodlighting equipment |
| 05/11/1988 | CN87107576A Electronic equipment for control of fluorescent lamps |
| 05/10/1988 | US4743810 Circuit arrangement for operating a high-pressure discharge lamp |
| 05/10/1988 | US4743809 Xenon lamp circuit |
| 05/05/1988 | WO1988003353A1 Control system for electrical lighting |
| 05/05/1988 | WO1988003325A1 Method and apparatus for driving neon tube to form luminous bubbles and controlling the movement thereof |
| 05/05/1988 | DE3733178A1 Electronic flash gun for producing partial quantities of light |
| 05/05/1988 | DE3636901A1 Method for operating a high-pressure sodium-vapour discharge lamp |
| 05/04/1988 | EP0266207A2 Devices and methods of controlling alternating electric current |
| 05/04/1988 | EP0265431A1 Circuit for starting and operating at least one low-pressure or high-pressure gas discharge lamp with high-frequnency oscillations |
| 05/03/1988 | US4742277 Pulse generating apparatus for xenon lamp and lighting method thereof |
| 05/03/1988 | US4742276 Regulated deuterium arc supply system |
| 05/03/1988 | US4742275 High pressure metal vapor discharge lamp with starting element |
| 04/28/1988 | DE3636186A1 Circuit arrangement for emergency lighting |
| 04/27/1988 | EP0265237A2 Control gear for high intensity gas discharge lighting |
| 04/27/1988 | EP0265022A1 Assembly of a low-pressure sodium discharge lamp and a feeding apparatus, a low-pressure sodium discharge lamp and a lamp holder suitable for use in the assembly |
| 04/27/1988 | CN87208252U High effeciency power-saving fluorescent lamp of double-tube type |
| 04/27/1988 | CN87201622U Multifunction fluoressent lamp |
| 04/27/1988 | CN87106864A Fluorescent lamp apparatus |
| 04/27/1988 | CN87100895A Luminescent lamp |
| 04/26/1988 | US4740861 Thermal protection device for a dual input voltage lamp transformer/ballast apparatus |
| 04/26/1988 | US4740731 Two capacitor apparatus for sequential starting and operation of multiple series connected discharge lamps |
| 04/21/1988 | DE3634955A1 Arrangement for operating a plurality of fluorescent tubes |
| 04/21/1988 | DE3633566A1 Circuit arrangement for regulated high-energy pulse generation for gas-discharge flash lamps |
| 04/20/1988 | EP0264135A2 Power supply system for discharge load |
| 04/20/1988 | EP0263966A1 Power control system |
| 04/20/1988 | CN87207343U Electronic ballast switch of fluorescent lamp |
| 04/20/1988 | CN87200622U Efficient strobeless fluorescent lamp with electronic ballast |
| 04/19/1988 | US4739227 Method for operating from an AC source |
| 04/19/1988 | US4739225 Reduced requirement energy storage for load having non-zero minimum operating potential |
| 04/19/1988 | US4739188 Starting circuit enclosure |
| 04/19/1988 | CA1235455A1 Electrical circuit arrangement for igniting and feeding a gas and/or vapour discharge tube |
| 04/19/1988 | CA1235454A1 Circuit breaker with thin-walled bulb |
| 04/13/1988 | CN87209526U Starting device of fluorescent lamp |
| 04/13/1988 | CN87201503U Transformer for electronic neon lamp |
| 04/12/1988 | US4737819 Light exposure lamp having abnormal condition monitor |
| 04/12/1988 | US4737806 Apparatus for flash photographing |
| 04/12/1988 | CA1235210A1 Flash tube employing multiple flashes |
| 04/07/1988 | WO1988002590A1 Ballast for high pressure sodium lamps having constant line and lamp wattage |
| 04/07/1988 | DE3720701A1 Circuit arrangement for charging a power capacitor (capacitance) of at least one power photoflash lamp (flash lamp) |
| 04/07/1988 | DE3632272A1 Electronic circuit arrangement for operating low-pressure discharge lamps in a series circuit |
| 04/06/1988 | EP0262254A1 Low ripple, high power factor A-C to D-C power supply |
| 04/05/1988 | US4736149 Charging circuit for energy storage capacitors |
| 04/05/1988 | CA1234863A1 Power distribution system |
| 03/30/1988 | EP0261389A1 AC Power supply control, in particular fluorescent light dimming |
| 03/30/1988 | CN87204464U Ballast able to control two fluorescent lamps |
| 03/30/1988 | CN87201588U Phase inversible energy-saving fluorescent lamp |
| 03/29/1988 | US4734828 High frequency-high voltage power converter circuit |
| 03/29/1988 | US4734650 Adjusting feedback gain in a fluorescent lamp dimming control |
| 03/29/1988 | US4734624 Discharge lamp driving circuit |
| 03/24/1988 | DE3729204A1 Steuerleitung fuer eine regulier- bzw. einstellbare elektrische einrichtung Control line for a regulated and adjustable electric device |
| 03/23/1988 | CN87201393U Shell-type ballast for fluorescent tube |
| 03/22/1988 | US4733138 Programmable multicircuit wall-mounted controller |
| 03/22/1988 | US4733136 Method of regulating the power of vapor discharge lamps |
| 03/22/1988 | US4733135 Self-regulating, no load protected electronic ballast system |
| 03/16/1988 | EP0259646A1 Method and arrangement for supplying a gaseous discharge lamp |
| 03/16/1988 | EP0259603A1 System for energizing a fluorescent tube |
| 03/16/1988 | CN87201711U Starter of high pressure sodium lamp |
| 03/16/1988 | CN86207989U Electronic confroller of high efficieney d.c. sunlight fluorescent lams |
| 03/09/1988 | EP0258223A1 Ballast for ionic conduction lamps |
| 03/09/1988 | CN87207133U Inductive ballast of fluorescent lamp |
| 03/09/1988 | CN87207112U Adjustable fluorescent lamp ballast |
| 03/09/1988 | CN87207111U Fluorescent lamp with high-reliable, high-speed electronic starting igniter |
| 03/09/1988 | CN87207032U Electronic trigger for dysprosium lamp |
| 03/09/1988 | CN87105659A Fluorescent lamp operation |
| 03/08/1988 | US4730147 Method and arrangement for the operation of a gas discharge lamp |
| 03/02/1988 | EP0257600A1 Electronic ballast |
| 03/01/1988 | US4729081 Power-factor-corrected AC/DC converter |
| 03/01/1988 | US4728866 Power control system |
| 03/01/1988 | US4728865 Adaption circuit for operating a high-pressure discharge lamp |
| 03/01/1988 | CA1233505A1 Device provided with means for operating hid sodium lamp to minimize lamp voltage variation throughout lamp life |
| 02/25/1988 | WO1988001468A1 Solid state ballast for high intensity discharge lamps having constant line and lamp wattage |
| 02/25/1988 | WO1988001467A1 Fluorescent lamp operation |
| 02/24/1988 | EP0256005A1 An electrical preswitching device for fluorescent tubes which provides a distortion free load of the net |
| 02/24/1988 | CN86209704U Glow-aid or lamp and lantern triggered under low-voltage and low-temperature condition |
| 02/23/1988 | US4727470 Resonant inverter having crest factor control |
| 02/23/1988 | US4727297 Arc lamp power supply |
| 02/23/1988 | CA1233197A1 High pressure discharge lamp with thermal switch |
| 02/23/1988 | CA1233196A1 Ballast circuit having electromagnetic interference (emi) reducing means for an improved lighting unit |
| 02/16/1988 | CA1232938A1 High frequency oscillator-inverter ballast circuit for discharge lamps |
| 02/09/1988 | US4724362 High frequency lamp igniter using a spiral line pulse generator in combination with a series inductor-switch circuit |
| 02/09/1988 | US4724360 Circuit arrangement for operating a high-pressure discharge lamp |