| 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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| 08/02/1989 | EP0326341A2 Optical detection and control system |
| 08/02/1989 | CN2042267U Automatic light variator used for light-driven automobile |
| 08/02/1989 | CN2042246U Light-variable electricity-saving lamp pedestal |
| 07/26/1989 | CN2041877U Electrodelay system of lamplight |
| 07/20/1989 | DE3836128A1 Brightness control circuit for incandescent lamps and switched-mode power supplies |
| 07/19/1989 | CN2041479U Multifunctional switch for bedside |
| 07/19/1989 | CN2041467U Automatic high-efficiency energy-saving swich |
| 07/18/1989 | US4849683 Lamp driver circuit with controlled power over a range of power supply voltages |
| 07/13/1989 | WO1989006448A1 Light socket soft start and power interrupt assembly |
| 07/12/1989 | CN2041086U Color lamp with music and color-changing multifunctions |
| 07/11/1989 | US4847737 Vehicle vanity with light control |
| 07/05/1989 | CN2040687U Multi-switch controller for lighting lamp |
| 07/04/1989 | US4845619 Multiplex system for controlling the power applied to loads such as vehicle headlamps |
| 06/20/1989 | US4841198 Head lamp control method and apparatus, with PWM output regulation |
| 06/20/1989 | US4841196 Two-filament lamp and operating circuit and method for designing same |
| 06/15/1989 | WO1989005562A1 Illumination control system |
| 06/14/1989 | CN2039491U Stair-lighting controller for multi-storey building |
| 06/14/1989 | CN2039490U Brightness controller for incandescent lamp |
| 06/13/1989 | US4839566 Circuit for supplying power to a dental photopolymerizing apparatus |
| 06/13/1989 | US4839562 Electrical devices |
| 06/07/1989 | CN2039091U Electricity-saving with automatic time-delay cut-off light-control device |
| 06/06/1989 | CA1255357A1 Touch control for incandescent lamp |
| 05/31/1989 | CN2038699U Automatic electronic color-changing lamp capable of selecting arbitrarily color |
| 05/31/1989 | CN2038698U Single wire bridge type light-regulating switch |
| 05/31/1989 | CN2038663U Pull swith capable of changing luminance of lamp |
| 05/30/1989 | US4835406 Switching device |
| 05/30/1989 | CA1254940A1 Power supply for lighting incandescent lamp with high- brightness |
| 05/24/1989 | DE3738563A1 Workplace light fixture |
| 05/24/1989 | CN2038306U Antijamming and centralized silicon controlled light adjuster |
| 05/24/1989 | CN2038305U Multi-function energy saving lamp |
| 05/23/1989 | US4833339 Load control system |
| 05/17/1989 | CN2037902U Photoacoustic dual-controlled electricity-saving switch |
| 05/10/1989 | CN2037519U Transformer |
| 05/10/1989 | CN2037421U Discolouring lamps and lanterns |
| 05/05/1989 | WO1989004110A1 Circuit arrangement for controlling the brightness of a lamp |
| 05/03/1989 | DE3735989A1 Switched-mode power supply |
| 04/26/1989 | CN2036731U Energy-saving device for lighting installation |
| 04/26/1989 | CN2036728U Time delay automatic turn-off device for electric lamps |
| 04/25/1989 | CA1253198A1 Compensated light sensor system |
| 04/18/1989 | US4823069 Light dimmer for distributed use employing inductorless controlled transition phase control power stage |
| 04/11/1989 | US4821154 Multi-bulb light source |
| 04/06/1989 | WO1989003080A1 Sensor device |
| 04/05/1989 | CN2035550U Automatic door control switch |
| 03/29/1989 | CN2035160U Power-saving variable-light switch |
| 03/28/1989 | US4816698 Touch control circuit for incandescent lamps and the like |
| 03/22/1989 | CN2034759U Electricity-saving switch for machine tool lighting lamp |
| 03/15/1989 | CN2034361U Fluorescent lamp starter |
| 03/15/1989 | CN2034326U Energy-saving pull switch for regulating light |
| 03/15/1989 | CN2034295U Lighting installation of quartz clock controlled by whistle |
| 03/01/1989 | CN2033565U Multifunctional switch of incandescent lamp |
| 02/23/1989 | DE3727058A1 Circuit arrangement for adjusting the brightness of lamps |
| 02/22/1989 | CN2033176U Controller for colour lamp |
| 02/15/1989 | CN2032785U Automatic, controllable, adjustable color lamp |
| 02/15/1989 | CN2032784U Multivariant electronic light controller |
| 02/08/1989 | EP0302737A2 Multi-bulb light source |
| 02/08/1989 | CN2032386U Block proceeding light controller |
| 02/08/1989 | CN2032385U Electricity saver for road lanp |
| 02/07/1989 | US4803380 Cover and support plate arrangement for wall mounted devices |
| 01/26/1989 | EP0291526A4 Programmable multicircuit wall-mounted controller. |
| 01/25/1989 | CN2031570U Power saving three-step pulling switch capable of directly changing dim light into bright |
| 01/24/1989 | US4800329 Device for limiting inrush current |
| 01/18/1989 | CN2031192U Controller for lamp light decoration |
| 01/18/1989 | CN2031191U Switch for bright or dim light |
| 01/18/1989 | CN2031190U Controller for light-changing and life-prolonging of lamps |
| 01/18/1989 | CN2031189U Light-adjusting desk lamp by hand contact |
| 01/11/1989 | CN2030789U Electric-economizing device for incandescent lamp |
| 01/11/1989 | CN2030688U Electronic colour-adjusting lamps and laterns |
| 01/10/1989 | US4797599 Power control circuit with phase controlled signal input |
| 01/10/1989 | CA1248460A1 Driving arrangement for a varying colour light emitting element |
| 12/22/1988 | DE3719007A1 Changeover apparatus |
| 12/07/1988 | EP0293569A2 Power control circuit with phase controlled signal input |
| 12/07/1988 | CN88212449U Energy-saving switch for passageway illumination |
| 12/07/1988 | CN87207563U 可编程彩灯控制仪 Programmable Controller Lantern |
| 12/07/1988 | CN87202202U Electronic controller of sound-control table lamp |
| 11/30/1988 | CN88203252U Energy saving controller for building illumination |
| 11/23/1988 | EP0291526A1 Programmable multicircuit wall-mounted controller. |
| 11/23/1988 | CN88202072U Separating controller for music rhythm |
| 11/16/1988 | CN87215370U Series-connected power supply type self-interrupting switch with electronic time delay |
| 11/16/1988 | CN86209073U Energy-saving switch |
| 11/15/1988 | CA1244878A1 Method of, and apparatus for, half-cycle average or r.m.s. load voltage control |
| 11/02/1988 | CN87214930U Desk lamp for protecting eyesight |
| 10/26/1988 | EP0288223A2 Lamp-lighting device |
| 10/26/1988 | EP0288222A2 Lamp-lighting device |
| 10/26/1988 | CN87206229U Energy-saving switch for public lighting lamp |
| 10/19/1988 | CN88210849U Color-lamp photoelectric coding disc type progoamme controller |
| 10/19/1988 | CN87102617A Service life prolonged lamp bulb |
| 10/12/1988 | CN87215336U Electronic timing switch |
| 10/05/1988 | EP0285417A2 Soft start solid state switch |
| 09/28/1988 | EP0284592A1 Device allowing the restoration of the line courant in case of the burning out of one or several elements of a series arrangement |
| 09/28/1988 | EP0284415A1 Headlight on/off control gadget |
| 09/22/1988 | WO1988007291A1 Control of electrical circuits |
| 09/21/1988 | CN88210818U Induced table lamp |
| 09/21/1988 | CN88202952U Automatic light-adjusting switch |
| 09/21/1988 | CN88200499U Automatic illumination-regulating device for keeping illumination constant |
| 09/20/1988 | US4772824 Double three-way dimming system |
| 09/20/1988 | US4772805 Lamp illumination adjusting apparatus |
| 09/20/1988 | US4772804 Process and device for sending electrical current into a circuit using a transistor |
| 09/14/1988 | CN87216946U Bridge switch power supply for igniting gas discharger |
| 09/14/1988 | CN87216365U 0-9 v. auto light adjustable battery box |
| 09/14/1988 | CN87207087U 活动灯光控制器 Activities Lighting Controller |