| Patents for H05B 39 - Circuit arrangements or apparatus for operating incandescent light sources and not adapted to a particular application (6,420) |
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| 09/14/1988 | CN87206806U Contactless delay switch |
| 08/30/1988 | US4767968 System for controlling the operation of electrically powered apparatus |
| 08/17/1988 | EP0278639A1 Single-wired switching circuit directed to limit surge into lamp |
| 08/17/1988 | CN87209886U Automatic delay lighting system used in stairs and corridor |
| 08/17/1988 | CN87209285U Electricity-saving device for automatically switching off the light |
| 08/16/1988 | US4764708 Touch control lamp socket interior |
| 08/10/1988 | EP0199779B1 Switching device |
| 08/10/1988 | CN87213102U Timing electric-economizing switch for corridor light |
| 08/10/1988 | CN87211591U Automatic speed and illumination controller for small tractor |
| 08/10/1988 | CN87209549U High precision photoelectric controller for road lamps |
| 08/10/1988 | CN87206594U Civil electricity-saving lamp |
| 08/04/1988 | DE3701910A1 Method and circuit arrangement for regulating the luminous flux of an incandescent lamp |
| 08/04/1988 | DE3701805A1 Circuit arrangement for supplying electrical power to low-voltage loads |
| 07/27/1988 | CN87212321U Auto delay turn-off switch |
| 07/26/1988 | CA1239662A1 Microcomputer-controlled light switch |
| 07/20/1988 | CN87209664U Economizer switch without contactor |
| 07/20/1988 | CN87204362U Voltage-and-brightness-adjustable lampholder for incandescent light |
| 07/20/1988 | CN87202994U Energy saving appliance for electric lamp |
| 07/06/1988 | CN87214773U Beacon control with programme control |
| 06/30/1988 | WO1988004875A1 Light dimmer for distributed use employing inductorless controlled transition phase control power stage |
| 06/28/1988 | US4754117 Annealing method by irradiation of light beams |
| 06/21/1988 | US4752719 Use in television, motion pictures, theater, and professional photography |
| 06/16/1988 | WO1988004517A1 Programmable multicircuit wall-mounted controller |
| 06/16/1988 | WO1988004516A1 Long life traffic control lamp and socket insert |
| 06/14/1988 | US4751625 Body-electrostatic induction type of lamp device |
| 06/14/1988 | US4751433 Device permitting of economizing electric lighting energy |
| 06/08/1988 | CN86107970A Long-life lamp for high altitude obstacle |
| 06/07/1988 | US4749917 Responsive to a remote radio signal transmitter |
| 06/01/1988 | CN87212907U Light regulating device for incandescent lamp |
| 05/31/1988 | CA1237468A1 Photographic lighting apparatus |
| 05/25/1988 | EP0268487A2 Light adjusting apparatus |
| 05/25/1988 | CN87209731U Electricity-saving weak light lamps |
| 05/18/1988 | CN87209337U Energy-saving, life-prolonging and light-adjusting switch of incandescent lamp |
| 05/17/1988 | US4745351 Multiple location dimming system |
| 05/10/1988 | CA1236515A1 Heat flow detector for recessed incandescent fixtures |
| 05/04/1988 | CN87211012U Electronic automatic delay switch |
| 04/27/1988 | EP0264765A2 Circuit arrangement for operating low-voltage halogen incandescent lamps |
| 04/26/1988 | CA1235795A1 Automatic light control system |
| 04/21/1988 | DE3634156A1 Surface lighting fixture |
| 04/20/1988 | EP0263966A1 Power control system |
| 04/20/1988 | CN86205870U Lamp turn-off delayer |
| 04/19/1988 | US4739226 Dimming circuit having switching transistor protection means |
| 04/14/1988 | DE3716310C1 Arrangement for operating low-voltage loads |
| 04/13/1988 | EP0263537A1 Method and circuit arrangement for controlling the brightness and the depending temperature of a lamp, espcially for the lighting of an LCD display |
| 04/12/1988 | US4737609 Push button switch |
| 04/06/1988 | EP0263026A1 Electric power supply device for a light source using halide lamps |
| 04/06/1988 | EP0262950A1 Lighting apparatus |
| 04/06/1988 | CN87213593U Light-controlled lamp |
| 04/06/1988 | CN87210559U Rotary colour lamp |
| 04/05/1988 | US4736138 Apparatus for limiting surge currents in dc-illuminated incandescent lamp |
| 04/05/1988 | CA1234864A1 Device for regulating ac current circuit |
| 03/30/1988 | CN87213226U Automatic brightness-adjustable desk lamp |
| 03/30/1988 | CN87100761A Control method for stair lighting in multi-story building and its control system |
| 03/22/1988 | US4733138 Programmable multicircuit wall-mounted controller |
| 03/16/1988 | EP0260164A1 Power programmer for a network of lighting lamps |
| 03/16/1988 | EP0259456A1 Cover and support plate arrangement for wall mounted devices |
| 03/16/1988 | EP0259302A1 Lamp control |
| 03/16/1988 | CN86210661U Microwave tower airport barriev lamp with long life |
| 03/02/1988 | CN87200671U Three-way dimmer and three-frequency channel music color lamp |
| 03/02/1988 | CN86206504U Sound-control timing controller for illumination |
| 03/01/1988 | US4728866 Power control system |
| 03/01/1988 | CA1233506A1 Higher efficiency incandescent lighting unit having an improved ballast unit |
| 02/23/1988 | US4727449 Filament bypass circuit |
| 02/23/1988 | CA1233196A1 Ballast circuit having electromagnetic interference (emi) reducing means for an improved lighting unit |
| 02/17/1988 | CN87209476U Audio control and power-saving corridor lamp receptacle |
| 02/17/1988 | CN87105479A Method of and circuit arrangement for a brightness and temperature-dependent control of a lamp. more specifically for illuminating a liquid crystal disply |
| 02/11/1988 | WO1988001125A1 Electric switching device |
| 02/03/1988 | CN87203806U Acoustooptic controlling time delay switch |
| 02/02/1988 | US4723080 Touch control for incandescent lamp |
| 01/27/1988 | EP0254506A1 Circuit to limit surges in dc-operated lamp |
| 01/20/1988 | CN87206943U Intelligent electricity saving lighting system for staircase |
| 01/13/1988 | CN87206083U Lamp bulb life prolonging timer |
| 01/05/1988 | US4717862 Pulsed illumination projector |
| 12/31/1987 | CN87207881U Delay switch for lamps |
| 12/29/1987 | US4716511 Surge current-limiting circuit |
| 12/23/1987 | CN86210698U Energy-saving lamp controller with soft turn on and gradually turn off function |
| 12/15/1987 | US4713721 Lighting fixture overload protector |
| 12/08/1987 | US4712051 Adapter for switching from primary to standby device upon failure of primary device |
| 11/18/1987 | CN86208944U Light decoration controller with programmed memory |
| 11/05/1987 | DE3614433A1 Method and device for digital brightness control |
| 11/04/1987 | CN87204163U Line-to-line switch varing light intensity without power-off |
| 10/28/1987 | CN86207003U Multifunctional electronic contolled table lamp |
| 10/22/1987 | DE3611724A1 Brightness controller having a direct-current supply |
| 10/21/1987 | EP0242022A1 Device for limiting surge current |
| 10/21/1987 | CN87200205U Dual-purpose lamp for illumination in power failure and routine illumination |
| 10/21/1987 | CN86103950A Automatic round the clock lamp switch for prolonging the lifetime of the lamp |
| 10/20/1987 | US4701676 Touch control adaptor |
| 10/20/1987 | US4701675 Apparatus for limiting arc discharge current in incandescent lamp |
| 10/20/1987 | US4701669 Compensated light sensor system |
| 10/20/1987 | CA1228392A1 Skylight sensor and control system |
| 10/15/1987 | DE3611138A1 Light (luminaire) having a high-pressure discharge lamp and having a changeover device for changing over to a standby incandescent lamp |
| 10/13/1987 | CA1228118A1 Soft-starting phase-control circuit for low voltage load |
| 10/07/1987 | EP0240402A1 Method and device for sending an electrical current to a circuit with the aid of a transistor |
| 09/30/1987 | CN86101967A Day-to-day lighting method using low voltage electrical light source |
| 09/29/1987 | US4697122 Slow acting photo lamp control |
| 09/24/1987 | WO1987005744A1 Cover and support plate arrangement for wall mounted devices |
| 09/23/1987 | EP0237733A2 Circuit for feeding a lamp |
| 09/23/1987 | CN86101446A Method of program controlling stairway light for energy saving and control module |
| 09/22/1987 | US4695769 Logarithmic-to-linear photocontrol apparatus for a lighting system |
| 09/09/1987 | CN86203148U Versatile ac/dc desklamp with low power consumption |