| 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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| 04/30/1991 | US5012392 Automatic battery powered video light |
| 04/24/1991 | CN2075841U Touch type light adjusting device |
| 04/24/1991 | CN2075818U 节电开关 Saving switch |
| 04/23/1991 | US5010460 Waterscape lamp with shade of proximity-capacitance-sensing type device |
| 04/16/1991 | US5008865 Light source with gradually changing intensity |
| 04/10/1991 | EP0421914A1 Dimmer for low voltage halogen lamps |
| 04/10/1991 | EP0420901A1 Procedure and apparatus for the control of electric power. |
| 04/09/1991 | US5006724 Control device for light sets |
| 04/09/1991 | US5006701 Sensor system with source regulation coupled to sensor circuit sensitivity |
| 04/04/1991 | WO1991004648A1 Circuit for compensating the capacitive effect of a connection of a low-voltage lamp on the secondary side |
| 04/04/1991 | WO1991004647A1 Field lighting installation |
| 04/03/1991 | CN2074524U Multi-functional timing switch |
| 04/02/1991 | US5004969 Phase control switching circuit without zero crossing detection |
| 04/02/1991 | US5004957 Dimming control circuit |
| 03/27/1991 | CN2074084U Automatic light-controller for automobile |
| 03/27/1991 | CN2074083U Low-power loss, stepless speed change circulating clock face colored lamp controller |
| 03/26/1991 | US5003432 Down lighting systems and fixtures therefor |
| 03/21/1991 | WO1991003684A1 Portable light socket dimmer |
| 03/20/1991 | CN2073638U Economizer of corridor lamp |
| 03/13/1991 | CN2073195U Energy-saving delay breaker |
| 03/12/1991 | US4999544 Tree hung ornamental dimmer |
| 03/12/1991 | CA1281370C Wall box dimmer switch with plural remote control switches |
| 03/12/1991 | CA1281369C Apparatus for limiting arc discharge current in incandescent lamp |
| 03/07/1991 | DE4003778A1 Rotatable and pivotable electric lamp for room lighting - has adaptors mounted for rotation about colinear axes of threaded bolt and output shaft of motor |
| 03/07/1991 | DE4003754A1 Rotatable and pivotable electric lamp for room lighting - is operated by remote control using modulated IR radiation directed at protected photoreceiver on lamp support |
| 03/06/1991 | CN2072754U Bulb life-increasing unit |
| 03/06/1991 | CN2072749U Electronic delay-action circuit breaker |
| 03/05/1991 | US4998044 Efficacy incandescent light bulbs |
| 03/05/1991 | US4998042 Self-relamping clearance/marker light assembly |
| 02/28/1991 | DE3927496A1 Motorcycle lighting installation circuitry - provides automatic switching form dipped to main beam upon failure using triac |
| 02/27/1991 | CN2072306U Life-prolonging light-adjusting switch for incandescent lamp |
| 02/27/1991 | CN2072305U Automatic gradual light-varying apparatus |
| 02/27/1991 | CN2072270U Light saving switch |
| 02/21/1991 | WO1991002441A1 Process for adapting the light intensity of summation light to external light |
| 02/20/1991 | CN2071858U Time-delay self-cut-off for staircase lamp |
| 02/20/1991 | CN2071826U Electricity-saving dimming illumination pull switch |
| 02/13/1991 | CN2071413U Double jiont single line serkes connection soft start power saving switch |
| 02/13/1991 | CN2071412U Acousto-optic controlled electronic power saving device for incandescent lamp |
| 02/06/1991 | CN2070969U Magnetic induction type reading lamp with slave lamp |
| 02/06/1991 | CN2070947U Photo-adjusting electric saving illumination switch on wall |
| 02/06/1991 | CN2070863U Health reading lamp |
| 01/30/1991 | EP0410761A2 Lighting device |
| 01/30/1991 | EP0410484A1 Process for adapting the total light intensity to the outside light intensity |
| 01/30/1991 | CN2070520U Ultrasonic wave inducting lamp |
| 01/30/1991 | CN2070498U Safety energy-saving wire-pulling switch |
| 01/29/1991 | US4988924 Circuit arrangement for controlling the brightness of a lamp |
| 01/29/1991 | US4988923 Lighting equipment for providing bright illumination with limited surge |
| 01/28/1991 | CA2021807A1 Lighting device |
| 01/23/1991 | CN2070072U Multilamp lighting controller |
| 01/23/1991 | CN2070071U Automatic zeroloss delay-action circuit breaker |
| 01/22/1991 | US4987348 Bilevel current limiter |
| 01/22/1991 | US4987347 Lamp driver circuit |
| 01/16/1991 | CN2069610U Dark light pull-switch |
| 01/16/1991 | CN1048637A Self-adaptive switch |
| 01/15/1991 | US4985820 Driver circuit for switching on lamp with low cold resistance |
| 01/15/1991 | US4985661 Uninterrupted desk lamp |
| 01/03/1991 | DE3920847A1 Incandescent lamp operating circuit - uses controlled closure contact for supplying DC voltage to lamp within timed intervals |
| 01/02/1991 | EP0404913A1 Improved dimming control circuit |
| 01/02/1991 | CN2068742U Time-limit electricity-saving lamp cap controlled by sound and flash |
| 01/01/1991 | US4982139 Method and apparatus for controlling light intensity |
| 12/26/1990 | CN2068297U Series connection sound-control self-stop switch |
| 12/25/1990 | USRE33504 Wall box dimer switch with plural remote control switches |
| 12/25/1990 | US4980607 Light bulb life extender |
| 12/20/1990 | DE3918809A1 Master-slave dimmer with opto-couplers and triacs - has series connection of controlling inputs overridden by fast-switching short-circuit protective thyristors gating arrangement |
| 12/19/1990 | CN2067886U Power saving controller for stair lamp |
| 12/19/1990 | CN2067885U Acoustic control lamp |
| 12/19/1990 | CN2067884U Remote-control stepless light regulating lamp |
| 12/19/1990 | CN2067858U Stepping pulling switch for regulating light |
| 12/19/1990 | CN1047953A Dreamlike electronic colour lamp with automatically-changed and arbitrarily-selected colours |
| 12/18/1990 | US4979072 Lamp output protective circuit in electronic controller |
| 12/12/1990 | EP0401911A1 Switching device |
| 12/05/1990 | CN2067031U Suspending double seesaw power saving switch |
| 12/04/1990 | US4975629 Inductorless controlled transition and other light dimmers |
| 11/28/1990 | EP0398939A1 Light socket soft start and power interrupt assembly |
| 11/28/1990 | CN2066642U Elongation, electricity saving, electronic controller for corridor lamp |
| 11/28/1990 | CN2066641U Energy saving brightness booster for incandescent lamp |
| 11/28/1990 | CN1010651B Programmable multiple controller on wall |
| 11/22/1990 | DE4009658A1 Fernsteuerbares leistungsstellsystem A remotely controllable power adjustment system |
| 11/21/1990 | CN2066221U Fully-automatic energy-saving device for corridor illumination |
| 11/21/1990 | CN2066220U Sound-control, automatic, touching colour-changing lamps and lanterns |
| 11/20/1990 | US4972125 Plug-in dimmer module for lighting control systems |
| 11/20/1990 | US4972124 Electronic ballast inverter |
| 11/20/1990 | US4972123 Power-reducing circuit for fluorescent and for high-intensity incandescent lighting fixtures |
| 11/14/1990 | EP0396792A1 Procedure and apparatus for the calibration of a photoelectric switch used in a flasher |
| 11/14/1990 | EP0396791A1 Procedure and apparatus for the regulation of voltage in a flasher |
| 11/14/1990 | CN2065804U Non-power consumption energy-saving time delay switch for filament lamp |
| 11/08/1990 | DE3913932A1 Protection circuit for AC switching of transformer loads - has memory elements to control circuit by detection of current direction |
| 11/07/1990 | CN2065385U Trick light controller with music |
| 11/07/1990 | CN1046828A Electronically illusive colour lamp with function of automatic variation and arbitrary selection in colour |
| 11/06/1990 | WO1990013879A1 Location marker |
| 11/06/1990 | CA2054194A1 Location marker |
| 10/31/1990 | CN2064970U Controller for incandescent lamp and emergency lamp |
| 10/31/1990 | CN2064969U Adjustable energy-saving incandescent lamps and lanterns |
| 10/31/1990 | CN2064968U 闪光继电器 Flasher relay |
| 10/31/1990 | CN2064967U Touching on-off light adjustable desk lamp |
| 10/24/1990 | CN2064562U Multi-functioned flashing devices for automobile use |
| 10/24/1990 | CN2064561U Auto turning-off light switches for use in stairs and corridors |
| 10/23/1990 | US4965509 For controlling power flow an AC source to a load |
| 10/23/1990 | US4965492 Lighting control system and module |
| 10/17/1990 | CN2064005U Multipurpose emergency art lamp |