Patents
Sitemap › H05 - Electric techniques not otherwise provided for › H05B - Electric heating; Electric lighting not otherwise provided for › H05B 37 - Circuit arrangements for electric light sources in general
Patents for H05B 37 - Circuit arrangements for electric light sources in general (57,776)
01/1991
01/15/1991US4985820 Driver circuit for switching on lamp with low cold resistance
01/15/1991CA1279090C Self-regulating, no load protected electronic ballast system
01/10/1991DE4017731A1 Opto electric pulse convertor esp. for photographic flash - is based on phototransistor delivering HF AC to emitter follower with base AC short-circuit
01/09/1991CN2069191U Lamp controller of long life and energy saving provided with automatic voltage reduction during excessive network voltage level
01/03/1991DE3920595A1 Light control device for lighting circuit - uses single light button with different operating times defining several logic switch functions
01/02/1991EP0405149A2 Room condition maintaining apparatus
01/02/1991EP0404913A1 Improved dimming control circuit
01/01/1991US4982176 Solar powered lighting and alarm systems activated by motion detection
12/1990
12/27/1990CA1278333C Panel for controlling lighting scene
12/25/1990USRE33504 Wall box dimer switch with plural remote control switches
12/25/1990US4980806 Computer controlled lighting system with distributed processing
12/25/1990US4980612 Energy-saving ballast for electric gas discharge lamps
12/25/1990US4979308 Electrically-operated, under-the-cabinet
12/19/1990CN2067878U Electronic touching switch
12/13/1990DE4026083A1 Light fitting for grave operated by solar cells integrated in casing - uses long life bulb fluoresent tube glow discharge lamp or LEDs supplied by accumulator
12/12/1990EP0401911A1 Switching device
12/11/1990US4977484 Dimmer rack
12/11/1990US4977353 Communication system for single point emergency lighting
12/11/1990US4977351 Emergency lighting system
12/11/1990CA1277702C Instantaneous failure compensation circuit
12/04/1990US4975629 Inductorless controlled transition and other light dimmers
11/1990
11/28/1990CN1010651B Programmable multiple controller on wall
11/27/1990US4973801 Interlocked motion detector wall switch
11/22/1990DE4009658A1 Fernsteuerbares leistungsstellsystem A remotely controllable power adjustment system
11/20/1990US4972125 Plug-in dimmer module for lighting control systems
11/14/1990EP0396792A1 Procedure and apparatus for the calibration of a photoelectric switch used in a flasher
11/07/1990CN2065384U Multi-functional programmable controller for coloured lamp
11/06/1990WO1990013879A1 Location marker
11/06/1990US4969147 Network and intelligent cell for providing sensing, bidirectional communications and control
11/06/1990US4969146 Protocol for network having a plurality of intelligent cells
11/06/1990CA2054194A1 Location marker
10/1990
10/31/1990CN2064966U Multifunctional musical set light
10/25/1990DE3918341A1 Monitoring lights on vehicle which can draw trailer - using LV lamp at visual indicator shunted by conductive voltage of diode type component in current path
10/24/1990EP0393117A1 Protocol for network having a plurality of intelligent cells.
10/24/1990CN2064560U Power saving and protective area-located barostats for use on a group of lamps and lanterns
10/23/1990US4965492 Lighting control system and module
10/16/1990US4963793 Delayed response touch switch controller
10/16/1990US4962687 Variable color lighting system
10/11/1990DE3911109A1 Lighting systems, which switch automatically and in a non-contacting manner, in movable filing cabinets - displacement system
10/09/1990US4962336 Ignitor disabler
10/04/1990WO1990011639A1 Switch means incorporating slave relays
10/04/1990DE3910624A1 Power-failure activated coupled switch
10/03/1990EP0390328A1 Dimmer rack
10/03/1990EP0390035A2 Illumination control apparatus
10/03/1990EP0389542A1 Programmable control system
10/03/1990CN2063330U Automatic controller for turning-on and-off road lamp
10/02/1990US4961028 Lighting equipment
09/1990
09/26/1990EP0388436A1 Network and intelligent cell for providing sensing, bidirectional communications and control.
09/26/1990CN2062933U Automatic road lamp contsoller with tv signal control
09/18/1990US4958354 Apparatus for stabilizing the intensity of light
09/05/1990EP0385844A1 Lighting device for a landing strip
09/04/1990US4955018 Protocol for network having plurality of intelligent cells
08/1990
08/29/1990CN2060997U Dynamic flash head trinket with electronic music
08/28/1990US4952972 Life expiration detector for light source of image processing apparatus
08/23/1990DE4010627A1 Bulb simultaneous monitoring unit for motor vehicle headlamp - has switching elements for differentiation brightness values
08/21/1990US4951046 Runway lighting system
08/21/1990CA1273051A1 Failing lamp monitoring and deactivating circuit
08/16/1990EP0382357A1 Dimmer modules for lighting control systems
08/16/1990EP0381890A1 Current monitoring
08/15/1990CN2060612U Supper low energy consumption illumination controller
08/14/1990US4949020 Lighting control system
08/14/1990US4949018 High pressure sodium lamp starter controller
08/09/1990DE4001980A1 Marking stud for road surfaces - has head with surface directed upwards provided with solar cells and light-responsive sensor switch
08/08/1990CN2060274U Energy-saving automatic gradual change colour control device
08/08/1990CN2060270U Time light control electricity-saving device
08/07/1990US4947484 Protocol for network having a plurality of intelligent cells
08/07/1990US4947302 Improvements to control systems for variable parameter lighting fixtures
08/07/1990US4947086 System for lighting fluorescent lamps
07/1990
07/31/1990US4945291 Lamp-lighting device
07/31/1990US4945280 Independent emergency lighting system with self-diagnosis
07/31/1990US4945279 Lamp apparatus for generating sequential flashes
07/26/1990DE4010071A1 Continuous light source e.g. for cementery use - is operated by solar energy charged cells and has adjustable light intensity
07/25/1990CN2059783U Multifunction electronic illumination switch
07/25/1990CN2059782U Electricity-saving controller for illuminitor
07/24/1990US4943712 Motion detector
07/18/1990CA2007978A1 Portable lighting system
07/17/1990CA1271807A1 Failure compensation circuit with thermal compensation
07/12/1990WO1990007855A1 Improved dimming control circuit
07/11/1990CN2059290U Long life power saving device for lamp
07/10/1990US4941143 Protocol for network having a plurality of intelligent cells
07/03/1990US4939728 Network and intelligent cell for providing sensing bidirectional communications and control
07/03/1990US4939505 Monitoring and warning system for series-fed runway visual aids
07/03/1990US4939428 Touch switching system
07/03/1990US4939383 Wallbox-mountable dimmer and switch
07/03/1990CA1271219A1 Digital touch operated switch
06/1990
06/26/1990US4937702 Light intensity controller using a proximity sensor
06/26/1990US4937499 Photosensitive illuminating display
06/19/1990US4935862 Method and apparatus for control of fluorescent lamps
06/13/1990EP0372442A2 Switching device
06/13/1990EP0372441A1 Passive infra-red motion detector
06/13/1990CN2058295U Street lamp auto-controller
06/06/1990CA2004582A1 Motion detector
05/1990
05/31/1990WO1990005948A1 Lighting control system and module
05/31/1990DE3916865C1 Contactless switch controlled by IR - uses proximity sensor with reflex light scanner clocked by oscillator
05/23/1990EP0369586A2 Runway lighting system
05/16/1990EP0367761A1 Backup electrical system for lamps.
05/14/1990EP0355139A4 Stage light system.
05/08/1990US4924416 Apparatus for detecting relative crowding in a hall
05/08/1990US4924151 Multi-zone, multi-scene lighting control system
05/02/1990EP0365697A1 Circuit for detecting an open circuit composed by a load in series with an electronic switch
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