| 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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| 02/14/1990 | CN1039695A Controller of switches at different places for lighting lamp |
| 02/14/1990 | CN1039694A Intensity autoregulation method and device of illuminating lamp for watching tv |
| 02/13/1990 | CA1265841A1 Slow acting photo lamp control |
| 02/08/1990 | WO1990001247A1 Regulated ac controller |
| 02/07/1990 | CN2052593U Automatic time-delay lamps and lanterns with sound control |
| 02/07/1990 | CN2052592U Charged electric wax |
| 02/06/1990 | CA1265576A1 Transient control circuit for fluorescent lamp systems |
| 02/01/1990 | DE3923022A1 Einbau-dimmerschalter Built-in dimmer switch |
| 01/31/1990 | CN2052181U Multifunctional light-control powere economizer |
| 01/31/1990 | CN2052180U High-efficiency low-speed illuminator for tractor |
| 01/31/1990 | CN2052179U Touching stepless light-modulating lamps and lanterns |
| 01/24/1990 | EP0351920A2 Circuit arrangement for operating an electric incandescent lamp from an alternating voltage source and incandescent lamp for operation in such a circuit arrangement |
| 01/24/1990 | CN2051809U Automatic dimming device of headlight intensity for automobiles meeting at night |
| 01/24/1990 | CN2051707U Eyesight protective lamp for t.v. set |
| 01/17/1990 | CN2051425U Long service life and low energy consumption automatic lamp turn-off device |
| 01/17/1990 | CN2051091U Power device of cystoscope |
| 01/16/1990 | US4894588 For incandescent lamps |
| 01/09/1990 | US4893063 Apparatus for improving the efficiency of a lighting element |
| 01/03/1990 | CN2050670U Protector of signal lamp |
| 12/28/1989 | WO1989012950A1 Procedure and apparatus for the control of electric power |
| 12/27/1989 | CN2050249U Automatic energy-saving switch for corridor lamp |
| 12/27/1989 | CN2050248U Sound control-light control time lamps and lanterns |
| 12/27/1989 | CN2050247U Sensitive street lamp |
| 12/27/1989 | CN2050246U Automatic changing colour, selecting wantonly colour dream electronic lamp |
| 12/26/1989 | US4890200 Down lighting systems and fixtures therefor |
| 12/26/1989 | US4890000 Control circuit of the decorative light sets |
| 12/26/1989 | US4889999 Master electrical load control system |
| 12/20/1989 | EP0346665A1 Circuit for operating a pulse-modulated infrared radiation source |
| 12/20/1989 | EP0346405A1 Circuit arrangement for controlling the brightness of a lamp |
| 12/20/1989 | CN2049855U Sound and light combined control type auto-switch for illuminator |
| 12/20/1989 | CN2049854U Sound-controlled delay self-off energy-saving lamp controller |
| 12/13/1989 | CN2049452U Multifunction electronic lamp holder |
| 12/13/1989 | CN2049451U Multipurpose contactless light controlled adjustable electricity economizer |
| 12/13/1989 | CN2049450U Color changing lamp |
| 12/13/1989 | CN2049441U Electricity-saving time delay switch |
| 12/12/1989 | US4887006 Dimmer control circuit |
| 12/06/1989 | CN2049062U Energy saving telecontrol switch |
| 12/06/1989 | CN2049061U Safe electronic transformer for lathe lighting |
| 12/06/1989 | CN2049060U Bulb with n filaments matching holder and permutator |
| 12/06/1989 | CN2049051U Poly-step electronic delay switch |
| 11/29/1989 | CN2048666U Household enmergency lamp |
| 11/29/1989 | CN2048665U Cantactless dc flasher |
| 11/29/1989 | CN2048664U Mini lamp self cut-off device |
| 11/29/1989 | CN2048663U Electronic delay self cut-off lamp switch |
| 11/28/1989 | CA1263439A1 Multiplexing apparatus for phase-control circuits |
| 11/22/1989 | CN2048272U Adapter of exciter lamp with acoustooptic open delayed closure |
| 11/22/1989 | CN2048271U Audio control timing lamp |
| 11/16/1989 | WO1989011175A1 Protective power variator |
| 11/15/1989 | CN2047873U Self-lighting out electronic delayaction circuit breaker |
| 11/15/1989 | CN2047872U Wall lamp with door bell |
| 11/15/1989 | CN2047863U Energy-saving delay-action touch switch |
| 11/15/1989 | CN2047837U Energy-saving light-modulating switch for electric incandescent lamp |
| 11/08/1989 | EP0340777A1 Driver Circuit |
| 11/08/1989 | CN2047476U Miniature timing automatic turnoff electricity-saving switch |
| 11/08/1989 | CN2047475U Lampstand type adjustable light controller |
| 11/07/1989 | US4879637 Light control circuit for vanity mirror assembly |
| 11/02/1989 | DE3813035A1 Automatic lamp-changing device for projectors |
| 11/01/1989 | CN2047089U Electronic dream colour lamp with automatic changing colour and arbitrary choosing colour function |
| 11/01/1989 | CN1005677B Method of program controlling stairway light for energy saving and control module |
| 10/31/1989 | US4878010 Electric a.c power switch controller and d.c. power supply method and apparatus |
| 10/25/1989 | CN2046584U Multicoloured lamp |
| 10/24/1989 | US4876498 Two wire low voltage dimmer |
| 10/19/1989 | DE3901877A1 Method for electrical illumination for prolonged, continuous, and straining visual work and circuit for controlling the light intensity of the electrical illumination for prolonged, continuous, and straining visual work |
| 10/19/1989 | DE3839373A1 Brightness control circuit for incandescent lamps and switched-mode power supplies having a protecting and limiting circuit to obtain an electronic safeguard |
| 10/19/1989 | DE3811496A1 Luminaire having a plurality of light sources of low-voltage halogen lamps |
| 10/17/1989 | US4875145 Light apparatus for animal pets |
| 10/17/1989 | US4874991 Touch controlled multiple position lamp |
| 10/17/1989 | US4874990 Notch gap transformer and lighting system incorporating same |
| 10/12/1989 | DE3916051A1 Adapter circuit for 24 volt 1.2 watt inspection lamps, operated from 220 volt AC, 50 Hz |
| 10/11/1989 | CN2045920U Self-stop unit for lamp |
| 10/05/1989 | DE3800950A1 Electrical circuit |
| 10/04/1989 | CN2045566U Automatic lamp turning off power saving switch |
| 10/04/1989 | CN2045565U High-precision integrated circuit photoelectric autocontroller for road lamp |
| 10/04/1989 | CN2045557U Auto-off switch device for light lamp |
| 09/27/1989 | EP0334431A2 Circuit arrangement for producing a consumer's pulse supply voltage from a DC voltage |
| 09/27/1989 | CN2045172U Fully automatic illusive light changing controller |
| 09/27/1989 | CN2045171U Stepless voltage regulated color changing lamp |
| 09/26/1989 | US4870340 Method of and apparatus for reducing energy consumption |
| 09/20/1989 | CN1035749A Delay switch circuit of electronic exciter lamp |
| 09/20/1989 | CN1035748A Device for regulating lightness of pendent lamp and speed of pendent fan |
| 09/19/1989 | US4868460 Transformer dimmer circuit |
| 09/19/1989 | US4868459 Method of and circuit for brightness and temperature-dependent control of an LCD illuminator |
| 09/14/1989 | DE3806486A1 Filament lamp, in particular table lamp |
| 09/13/1989 | CN1035593A Power control circuit with phase controlled signal input |
| 09/06/1989 | EP0331157A2 Switching power supply |
| 09/06/1989 | CN2044115U Photo-controlling delayed illumination power saving switch |
| 09/06/1989 | CN2044042U Music speaker with colour lamps |
| 09/06/1989 | CN2044039U Double light source desk lamp for writing |
| 08/30/1989 | CN2043813U Light adjuster for electronic keyboard capable of playing colour music |
| 08/29/1989 | US4862041 Dimmable electronic transformer circuit |
| 08/29/1989 | CA1258897A1 Automatic control system for automobile lights |
| 08/16/1989 | CN2043036U Auto-control energy saving lamp holder |
| 08/16/1989 | CN2043035U Auto-controller for street lamp |
| 08/16/1989 | CN2043034U Multifunction lighting switch |
| 08/09/1989 | EP0327174A1 Circuit arrangement for deriving a direct voltage from the mains alternating voltage |
| 08/09/1989 | CN2042650U Combined micro-bulb emergency lamp |
| 08/09/1989 | CN2042623U Adjustable switch for lighting |
| 08/09/1989 | CN2042566U Health desk lamp for reading |
| 08/08/1989 | US4855649 Single-wired switching circuit directed to limit surge into lamp |
| 08/08/1989 | US4855647 Flashlight with soft turn on control |