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Patent Searching and Data


Matches 351 - 400 out of 2,089

Document Document Title
WO/2002/039789A1
A circuit device for reducing or increasing an alternating voltage in an approximately sinusoidal manner is comprised of an autotransformer, to which the alternating voltage is applied and which has at least one tap, whereby one end of t...  
WO/2002/039787A2
A light emitting device which includes at least a first light source which is connectable to an energy source, a second light source, detector means for detecting a failure of the first light source, and switch means, responsive to the d...  
WO/2001/091521A1
The invention relates to a traffic signal installation comprising an LED light source (2), which has the following: an input (38, 40) for connecting a current source and the following elements at different levels of potential between the...  
WO/2001/091522A2
A programmable control circuit is disclosed for generating a programmable power curve and ramp. The circuit includes an amplifier having both positive and negative feedback. The positive feedback including a time lag component and the ne...  
WO/2001/088429A1
A snowflake display (10) has been provided wherein this display comprises at least one frame (20), at least one light (30) and at least one controller (40) for alternately turning these lights on and off. In one embodiment of the inventi...  
WO/2001/080195A1
A touch operated control system (10) is provided that advantageously provides enhanced functionality, including a programmable timer that sets a light coupled to the dimmer to OFF after a predetermined period of time. The control system ...  
WO/2001/077576A1
The invention concerns a light animation device comprising an animating unit (10) and light string system (1) housed or extruded in a sleeve (60) characterised in that the light string system (1) are connected to the animating unit by at...  
WO/2001/069983A1
The invention relates to an electronic transformer for operating at least one low-volt halogen lamp (L). The inventive transformer contains an inverse rectifier (3) having two switches (V1, V2) that can be switched-on and off for providi...  
WO/2001/059930A1
The present invention relates to the field of phase control, a field where there is a device in which an inductor is used to control the risetime of a waveform. Applications of the present invention include dimmer control used in conjunc...  
WO/2001/043509A2
A touch-type light-adjusting switch for the night lamp is composed of a switch body and a shell. The body comprises a touch board and a control circuit for adjusting light, and light-emitting device combined with them together. The touch...  
WO/2001/037616A1
According to the invention, the proportion of sunlight (I¿s?) and/or artificial light (I¿K?) of the spectral power density (I¿$g(l)?) in a spatial volume, which is illuminated by sunlight (S) and artificial light (K), is determined us...  
WO/2001/029950A2
A power control system for use in providing mechanical or electrical power to a load is used to operate a system to provide a series of pulses to the system wherein the pulses within each series provide differing amounts of power. Prefer...  
WO/2001/022781A1
A signal generating circuit coupled to an AC supply, the circuit comprising at least one first switch device coupled to the AC supply, at least one triggerable switch device coupled to the first switch device, operation of the first swit...  
WO/2001/020226A1
The present invention provides a power supply circuit for an electrically powered device such as a light, including: switch means adapted to be closed by manual actuation; a capacitor connected to be charged when said switch is closed; a...  
WO/2001/013038A1
A flashing beacon (6) of a traffic cone (1) is powered from a battery-pack (10) that is recharged from a solar-panel (12). A circuit (11) turns flashing of the beacon (6) on and off in accordance with dusk and dawn time-nominations that ...  
WO/2001/006652A2
A switch (10) comprises a face plate (16) and a single switch sensing oscillator (18) responsive to a switch activating presence. The oscillator (18) has a resistive component (36) connected to a sensing plate (38) which acts as a first ...  
WO/2000/076034A1
A wireless data transmission network, comprising at least one lamp post with a transreceiver forming a node in said network. The transreceiver comprises a control circuit for a lamp. The invention also relates to a method for remote admi...  
WO/2000/074179A1
The invention relates to an electric installation device with a built-in component (5) which comprises electric components, such as current flow angle control components in the case of a dimmer, and an operating component (1) which is de...  
WO/2000/069043A1
The object of the invention is a control circuit for eliminating a voltage and current spike from a circuit formed by a switching transistor (T2) and a load (L). The base control of the switching transistor (T2) is arranged to be depende...  
WO/2000/065883A1
AC power switch line controlled controller which is to use the existing switch wiring, comprising a power switch means and a controller, the power switch means composed with a main switch and a coil which is connected in series each othe...  
WO/2000/064220A1
The invention relates to a device for adjusting the brightness of an illuminating means (58). Said device comprises an operation detection mechanism (50) for generating a detection signal, whereas a user (53) operates the operation detec...  
WO/2000/057678A1
A variable power lamp control adapter (100) has a circuit construction achieved by utilization of the Surface Mount Technology disciplines of PolymerThick Film and Chip on Board technologies. The adapter circuitry (100) is constructed an...  
WO/2000/056125A1
The invention relates to an energy-saving incandescent lamp which comprises a bulb unit, a contact unit joined to the bulb unit, an incandescent filament, a support element, an insulating element and a contact tip. The filament is connec...  
WO/2000/055911A1
A single triac on a heat sink is replaced by a plurality of lower rated current, parallel connected triacs for carrying the same total current as the single triac. The plural devices are spaced apart as far as possible, within the confin...  
WO/2000/041464A2
The invention relates to a circuit arrangement for igniting and operating a high-pressure discharge lamp, provided with: input terminals for the connection of a supply source, output terminals for the connection of the lamp, switching me...  
WO/2000/040057A1
A lighting control device for controlling the light intensity level of at least one lamp. The device is capable of storing preset light intensity levels in a memory. The method for storing the preset light intensity levels is simple and ...  
WO/2000/035712A1
A vehicle headlight control for adaptively controlling the duty cycle of a PWM voltage to one or more headlamp filaments. The control includes fault detectors whereby the failure of one or more filaments caused the intensity of the remai...  
WO/2000/035077A1
The inventive method is characterised in that, after first providing satisfaction concerning the functioning of machines, the standards of biophysical conditions of the human senses can be attended to. Indeed the interpretation of human ...  
WO/2000/033344A1
The present invention is a system and method for reducing the voltage necessary to produce a glow discharge in a gas (14). This is done by fabricating the cathode (20) in a gas discharge out of a conductive material that is permeable to ...  
WO/2000/032015A1
A natural light metering and augmentation device for maintaining at least a predetermined minimum level of illumination in a building area. Broadly, the device comprises a skylight, a light sensor, an artificial light source, and a contr...  
WO/2000/030409A1
A control device for a lighting system for the transmission of control or encoding information, as well as illuminance data, in a wireless manner to a receiver (1) housed in a control unit (7). The control unit (7) is adapted to control ...  
WO/2000/028792A2
An electronic transformer (10) for lighting inlcudes a rectifier (13) coupled to an inverter (18, C2, C3, Q1, Q2) an output transformer (T1, T10) and a drive transformer (T2, T11). A protection mechanism (VR1, VR2) is responsively couple...  
WO/2000/026733A1
Dashboard dimmer light circuit for a vehicle, for example a car or truck. A power supply (10) provides a step-function voltage signal to an op-amp oscillator circuit (20) which provides a triangular voltage oscillation signal to an op-am...  
WO/2000/022890A2
The present invention provides for a unique microchip or circuit which can, $i(inter alia), handle both current conducting functions and man-machine-interface functions in an electrical device, for example, such as a flashlight. The man-...  
WO/2000/019777A1
A device for lighting and dimming a plurality of filament lamps are provided which eliminates the effects of harmonic distortion on its power supply. Lamp control circuits (1-1 to 1-n) are provided corresponding to filament lamps (4-1 to...  
WO/2000/019778A1
The invention concerns a circuit for controlling a load (1) to be supplied in alternating current voltage, comprising a two-way switch (2) capable of being controlled by phase angle, in series with the load between two terminals (E1, E2)...  
WO/2000/019389A1
System of luminous signals on obstacles to flight, such as antennas, buildings, electricity pylons or similar, wherein said obstacles are provided with at least an electric conductor (11) in which an alternating current circulates, and t...  
WO/2000/004628A1
The invention relates to a circuit device for quasi-sinusoidal lowering of an AC voltage, which is composed of a voltage divider transformer with at least one tap, whose low end is connected to the neutral wire via a first switch and who...  
WO/1999/058899A2
An electrical circuit for use with plural, low voltage loads such as a string of Christmas lights is disclosed comprising groups (36) of lights (34) placed electrically in a series circuit but the lights within each group are in parallel...  
WO/1999/059224A2
A light socket (100) is disclosed that has a built-in integrated circuit (50) for rectifying the alternating current (150) received from an electrical outlet and limiting the direct current produced. The light socket (100) is specificall...  
WO/1999/053235A1
The torch is provided with the necessary means to couple the torch to the helmet in order to form an autonomous light source and at the same time leave the user's hands free. The torch is provided with two independent lamps of which the ...  
WO/1999/053729A1
A string set of series-connected incandescent bulbs adapted to being connected to a source of alternating-current operating potential and in which all of the bulb filaments in the set are individually provided with a non-avalanche shunt ...  
WO/1999/045749A1
A work station is fitted with a light-detecting device comprising a light sensor which detects the light intensity of the ambient light at the work station and generates a voltage which is proportional to the detected light intensity. Th...  
WO/1999/043075A1
The invention concerns a method for producing a phase control device free from drift stresses due to line frequency or the temperature of the components constituting it, whereby a signal delivered by a control is modified by a converter ...  
WO/1999/038248A1
The present invention relates to apparatus used in power control, such as apparatus for controlling the power level in an AC electrical circuit. Such an apparatus is referred to as an AC power converter. In one form, the present inventio...  
WO/1999/038363A1
A dimmer for dimming gas discharge and incandescent lamps can be installed in place of a standard wall-mounted light switch and connected to existing wiring. The dimmer has a switch coupling one or more full wave bridge rectifiers to a m...  
WO/1999/031560A2
Provided herein are methods and systems for illumination. The methods and systems may include LED systems associated with a processor. Various environments and applications of processor-controlled LED systems are provided, including kine...  
WO/1999/020082A1
A method of and apparatus for generating an electrical signal (V¿4,5?) in particular for use in controlling the illumination level of a lamp (10). The electrical signal (V¿4,5?) is generated as a hybrid of two sinusoidal form voltage s...  
WO/1999/018651A1
A phase controlled dimming system having an active filter (30) for receiving the AC line voltage waveform, and for recovering the AC fundamental waveform therefrom is disclosed. The recovered AC fundamental waveform is supplied to a zero...  
WO/1999/012187A1
The invention relates to an incandescent lamp with a low voltage burner (BM) and integrated voltage conversion means (VCM). Control signals to drive the switching elements (Q1, Q2) comprised in the voltage conversion means are generated ...  

Matches 351 - 400 out of 2,089