| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 10/05/1993 | US5250799 Method for adapting the light intensity of the summation light to the external light |
| 09/30/1993 | WO1993019569A1 Regulating light intensity by means of magnetic core with multiple windings |
| 09/30/1993 | WO1993019568A1 Flashing light system and method for enhancing algae photosynthesis |
| 09/30/1993 | DE4309218A1 Niederspannungs-Vorschaltanordnung für eine Entladungs-Lichtquelle großer Helligkeit Low-voltage ballast circuit for a discharge light source of high brightness |
| 09/30/1993 | DE4308514A1 Headlamp control circuit for vehicle - varies light intensity through varying pulse duty factor of driver pulse current and with intensity reduction during starting and when parked |
| 09/30/1993 | DE4302555A1 Excimer radiation generating lamp - has high pressure halogen filling, useful for UV treatment of coatings |
| 09/29/1993 | EP0562680A1 High pressure discharge lamp |
| 09/29/1993 | EP0562397A2 Dual threshold differential discriminator |
| 09/29/1993 | CN2143043Y Multi-function illuminator for fluorescent lamp |
| 09/29/1993 | CN2143042Y Regulating-controlling device for fluorescent lamp |
| 09/29/1993 | CN2143041Y Starter for fluorecent lamp with two-controllable-tube |
| 09/29/1993 | CN2143040Y High energy-saving transformer for neon lamp |
| 09/28/1993 | US5249007 Strobe apparatus |
| 09/28/1993 | US5248918 Starting aid for an electrodeless high intensity discharge lamp |
| 09/28/1993 | US5248917 Flat fluorescent lamp and liquid crystal projector incorporating same |
| 09/28/1993 | CA2092384A1 High-pressure discharge lamp |
| 09/28/1993 | CA2089301A1 Low voltage ballast circuit for a high brightness discharge light source |
| 09/28/1993 | CA1322573C Fluorescent lamp high frequency operating circuit |
| 09/26/1993 | WO1993019570A1 Power regulator of discharge lamp and variable color illumination apparatus using the regulator |
| 09/26/1993 | CA2132435A1 Power regulator of discharge lamp and variable color illumination apparatus using the regulator |
| 09/22/1993 | EP0561455A1 Line output transformer |
| 09/22/1993 | EP0560887A1 A wide dimming range gas discharge lamp drive system. |
| 09/21/1993 | US5247228 Fluorescent lamp ballast adaptor |
| 09/16/1993 | DE4307946A1 Microwave discharge lamp with TM-mode cavity - has discharge tube located within cavity with reflectors and wall having slots coupling to waveguide unit. |
| 09/16/1993 | DE4207417A1 TV lounge lighting control device - uses smoothed and compared chrominance signal components for adjustment of dimmers applied to corresp. primary coloured lamps |
| 09/15/1993 | EP0560441A1 High-pressure discharge lamp |
| 09/15/1993 | EP0560255A1 Power reduction control for inductive lighting installation |
| 09/15/1993 | CN2142257Y 电子荧光灯 Electronic fluorescent |
| 09/15/1993 | CN2142256Y Multi-function quick-starting direct-current fluorescent lamp |
| 09/15/1993 | CN2142255Y Economic inductive ballast |
| 09/15/1993 | CN2142254Y LC starting inductive reactance type ballast for fluorescent lamp |
| 09/15/1993 | CN1022153C Push-pull inverter |
| 09/14/1993 | US5245253 Electronic dimming methods for solid state electronic ballasts |
| 09/08/1993 | EP0558772A1 Circuit arrangement for operating several fluorescent lamps with one ballast |
| 09/08/1993 | CN2141959Y Glow starting ballast |
| 09/08/1993 | CN1076073A Luminous body ballast for fluorescent lamp |
| 09/07/1993 | US5243261 Modulated high frequency dimmer circuit with infrared suppression |
| 09/07/1993 | US5243258 Fluorescent lamp electrode disconnect arrangement |
| 09/07/1993 | US5243256 gas discharge basin for compact lamps |
| 09/06/1993 | CA2090851A1 Circuit arrangement |
| 09/01/1993 | EP0557817A2 Flashing light warning device |
| 09/01/1993 | CN2141641Y Light adjustable fluorescent |
| 09/01/1993 | CN2141636Y Long-life energy-saving fluorescent lamp controller |
| 09/01/1993 | CN2141635Y Automatic compensation type energy-saving long-life stator for fluorescent lamp |
| 09/01/1993 | CN2141634Y Energy-saving high-effect ballast for fluorescent lamp |
| 09/01/1993 | CN2141597Y Light adjustable pullswitch for fluorescent lamp |
| 09/01/1993 | CN1075824A Three-phase low-flickering and high-lighting power fluorescent light |
| 09/01/1993 | CN1022013C Stable igniting device for electronic lamp |
| 08/31/1993 | US5241246 End cup applicators for high frequency electrodeless lamps |
| 08/31/1993 | US5241242 Power-supply circuit apparatus for high pressure gas discharge lamps in motor vehicles |
| 08/31/1993 | CA2008041C Low voltage direct current (dc) powered fluorescent lamp |
| 08/31/1993 | CA1321811C Control system for electrical lighting |
| 08/27/1993 | WO1993017534A1 Improved low loss ballast system |
| 08/27/1993 | CA2109197A1 Improved low loss ballast system |
| 08/25/1993 | EP0556427A1 A control unit for controlling a strobe light or the like |
| 08/25/1993 | CN2141164Y Series-operation fluorescent lamp |
| 08/25/1993 | CN2141163Y High-efficient low-voltage electronic automatic glow starter |
| 08/25/1993 | CN2141159Y Energy-saving incandescent lamp without ballast |
| 08/25/1993 | CN1075588A Universal electronic power-saving lamp |
| 08/24/1993 | US5239255 Phase-controlled power modulation system |
| 08/24/1993 | US5239239 Surrounding a portion of a lamp with light regulation apparatus |
| 08/24/1993 | US5239238 Electrodeless low-pressure mercury vapour discharge lamp |
| 08/24/1993 | US5239234 Method of igniting a gas-discharge lamp |
| 08/19/1993 | DE4204020A1 Power supply system for gas discharge tubes, e.g. for neon signs - employs semiconductor control and medium frequency inverter enabling use of small display-mounted transformers and monitor circuit |
| 08/18/1993 | CN2140604Y Safety energy saving electronic ballast |
| 08/18/1993 | CN2140603Y Long service energy saving fluorescent lamp |
| 08/18/1993 | CN2140602Y Combined fluorescent lamp switch |
| 08/18/1993 | CN2140601Y 再生式荧光灯镇流器 Regenerative fluorescent lamp ballasts |
| 08/18/1993 | CN2140600Y Energy saving transformer for high voltage neon lamp |
| 08/18/1993 | CN2140599Y Electronic starter for fluorescent lamp |
| 08/18/1993 | CN2140467Y Multipurpose battery case with emergency lamp |
| 08/18/1993 | CN1021873C Flash lamp synchronous unit |
| 08/18/1993 | CN1021872C Switching arrangement |
| 08/18/1993 | CN1021871C Dc/ac bridge circuit |
| 08/17/1993 | US5237243 Protection means |
| 08/17/1993 | US5237242 Apparatus for operating a discharge lamp and a lighting unit having the apparatus |
| 08/17/1993 | US5237241 Cold-cathode fluorescent discharge tube |
| 08/17/1993 | US5237169 Installation for controlling the lighting level of premises |
| 08/17/1993 | US5237168 Control of the level of illumination premises |
| 08/12/1993 | DE4218647A1 HV gas-discharge lamp arrangement with DC voltage source - has one or two dc voltage converters followed by polarity reversing switch, with driver circuit and oscillator |
| 08/11/1993 | EP0554925A1 High pressure discharge lamp |
| 08/11/1993 | EP0554619A1 Self-extinguishing gas probe starter for an electrodeless high intensity discharge lamp |
| 08/11/1993 | EP0554350A1 High power lamp. |
| 08/11/1993 | CN2140129Y Cold cathode high-frequency start device |
| 08/11/1993 | CN2140128Y Portable show xenon lamp power |
| 08/10/1993 | US5235256 Biasing system for controlling chemical concentration in lamps |
| 08/10/1993 | US5235255 Switching circuit for operating a discharge lamp with constant power |
| 08/10/1993 | US5235254 Fluorescent lamp supply circuit |
| 08/10/1993 | US5235252 Fiber-optic anti-cycling device for street lamps |
| 08/10/1993 | CA1321236C Power control circuit with phase controlled signal input |
| 08/10/1993 | CA1321235C Circuit arrangement suitable for operating a high-pressure discharge lamp |
| 08/05/1993 | DE4202836A1 Flash energy generating circuit for stroboscope with high flash rate frequency range - includes intermediate circuit capacitor connected to AC voltage source across rectifier and flash capacitor connected to flash lamp across charging element |
| 08/04/1993 | EP0553923A1 Inverter device |
| 08/04/1993 | CN2139654Y Combined lamps and lanterns without ballast |
| 08/04/1993 | CN1075049A Fast starter with prolonged service life for fluorescent lamp |
| 08/04/1993 | CN1075017A Controller for photographic lighting |
| 08/03/1993 | US5233273 Discharge lamp starting circuit |
| 08/03/1993 | US5233272 DC plasma display panel and driving method thereof |
| 08/03/1993 | US5233271 Starting device and lamp base construction for a Philips lamp |
| 08/03/1993 | US5233270 Self-ballasted screw-in fluorescent lamp |