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7609008 Method and circuit for controlling an LED  
A control circuit coupled to a power line controlled by a dimmer having a switching device includes, for example, an active power factor correction circuit receiving power from a bridge rectifier...
7605547 Addressable LED architecture  
The present disclosure provides an addressable light emitting diodes (LED) architecture that is able to control a plurality of LEDs individually. The present disclosure further provides a method of...
7597456 Light emitting diode replacement lamp  
The invention is a replacement for a conventional incandescent or halogen light bulb. Besides providing regular illumination, it has advantages over a conventional bulb while maintaining the bulb's...
7576497 Synchronous light emitting diode lamp string  
The present invention provides a light emitting diode lamp, which includes at least a light emitting diode and a control circuit. The light emitting diode lamp has an anode pin, a cathode pin, and...
7576496 AC powered OLED device  
AC powered light emitting device comprises a plurality of organic light emitting diode (OLED) modules. The OLED modules are arranged into a series group where the individual OLED modules are...
7560876 Light device and control method thereof  
Provided is a light device. The light device according to one embodiment comprises a backlight unit, a plurality of color sensors, a backlight unit driver, and a backlight unit controller. The...
7551101 Light emitting device drive controller, and a light emitting device driving apparatus  
A light emitting device drive controller is disclosed that comprises a first port that is connected to one end of a first light emitting device group where two light emitting devices are connected...
7541785 Load driving device and portable apparatus utilizing such driving device  
A load such as an LED and a constant-current source are connected in series with each other between the node of a dc-dc conversion type power supply circuit providing an output voltage and the...
7508141 Modular decorative light system  
A sculptable, decorative light system includes a number of modules of differing lengths which can respond to commands either in parallel or time delay to create pre-selected light colors and...
7501772 LED lighting string employing rectified and filtered device  
An improved LED lighting string employs a rectified and filtered device functioned as a low pass filter device to rectify input AC source into DC source providing to the LED lighting string for...
7489086 AC light emitting diode and AC LED drive methods and apparatus  
An AC LED package and circuits are disclosed along with an AC LED driver. The AC LED circuit may include as few as one LED or an array of anti-parallel LEDs driven with AC power sources and AC LED...
7482761 Light emitting diode lamp assembly  
A light emitting diode (LED) lamp assembly comprises an LED string and a plug. The LED string comprises multiple LEDs connected together in series. The plug is connected to the LED string and an...
7482760 Method and apparatus for scaling the average current supply to light-emitting elements  
The present invention provides a method and apparatus for scaling the average drive current supplied to a light-emitting element or string thereof by coupling a scaling signal to an original...
7479738 Drive circuit for light emitting diode  
A drive circuit for light emitting diode (LED) is provided, which is used to drive a plurality of LEDs to emit light. The LEDs are connected in series into a plurality of LED strings. The drive...
7446481 Display device and control method thereof  
A display device and method for supplying stable electric power for a light source are provided. A display device comprises a plurality of light sources, a variable electrical power supply which...
7423387 Apparatus and method for controlling colour and colour temperature of light generated by a digitally controlled luminaire  
The present invention provides a method and apparatus for controlling the correlated colour temperature (CCT) or colour of light produced by an array of light-emitting elements by providing...
7408305 Codable electronic circuit arrangement and method for producing it  
A codable electronic circuit arrangement, in particular an LED circuit arrangement ( 1 ), having a lead ( 3 ), via which electronic circuit elements ( 6 ) of the circuit arrangement, in particular...
7408304 Apparatus for power circuit of light emitting diode  
The invention is set for connecting L.E.D., bridging rectifier and AC/DC power transformer by using series connection method, also the main purpose is for saving energy and reducing the cost of...
7390115 LED blinker load assembly  
An LED blinker load assembly (LBLA) ( 10 ) that can be integrated into the envelope of an LED light bulb or be attached externally to a rear, front or side LED lamp assembly. The LBLA ( 10 ) is...
7362057 Multi-way flashing control box for lamp strings  
A circuit board of a multi-way flashing control box includes a control circuit to be connected electrically to a plurality of LED lamp strings and operable to activate and deactivate the LED lamp...
7344275 LED assemblies and light strings containing same  
An LED light string employs a plurality of electrical components defined by LEDs and sockets wired in block series-parallel, where the one or more series blocks, each driven at the same input...
7339323 Serial powering of an LED string  
A circuit is used for driving a plurality of LEDs by an external voltage source. The LEDs are coupled in series. The circuit comprises a plurality of switches coupled to the LEDs in parallel,...
7331688 Synchronous light emitting diode lamp string  
The present invention provides a light emitting diode lamp, which includes at least a light emitting diode and a control circuit. The light emitting diode lamp has an anode pin, a cathode pin, and...
7318662 Vehicular headlamp  
A vehicular head lamp includes a first light source module having a plurality of semiconductor light emitting elements and a second light source module connected in series to the first light source...
7317287 Circuit for an LED array  
A circuit arrangement for an LED array having two or more parallel-connected LED chains (LK 1 , LK 2 , LK 3 ), in each of which at least one LED ( 2 ) is arranged and, when there are two or more...
7301287 High power light string device  
A high power light string device comprises a plug with a plug blade set, a tail receptacle, and at least an LED string, wherein a first power adaptor disposed in the plug converts an AC voltage...
7279809 Christmas light string with single Zener shunts  
A string set of series-connected incandescent bulbs in which substantially all of the bulb filaments in the set are individually provided with a shunt circuit which includes a voltage responsive...
7265496 Junction circuit for LED lighting chain  
An LED light string where the parallel connections of additional series blocks of LED lamps are added through an intermediate or junction circuit. The first half of the rectifying diode pair in the...
7261458 Semiconductor chip with container and contact elements for use in a light socket  
A shunt device for use in a light socket includes a first semiconductor chip and a first container having a receiving surface for receiving the first semiconductor chip therein and having an open...
7250730 Unique lighting string rectification  
An improved decorative light string circuit comprises full bridge rectification located in or downstream of the front plug, wherein the rectification circuit contains one or more voltage reducing...
7242148 Continuous current control circuit modules of series string bulbs type (II)  
The invention relates to a continuous current control circuit module of series string bulbs type (II), which can maintain the normal current and voltage across each of the bulbs when any of series...
7235930 Decorative tree with coordinated visual and sound effects  
A decorative tree uses a control circuit to operate multiple light strings and a speaker. Based on different types of music output by the speaker, the control circuit determines the light strings...
7227314 Voltage equalization method and apparatus for low-voltage lighting systems  
A method and apparatus to equalize the voltage across each light bulb in a low-voltage lighting system, commonly found in the yards of private homes and businesses. The present invention consists...
7224128 Device for driving light emitting diode strings  
A device for driving light emitting diode (LED) string, including a DC(direct current)-to-DC converter, a LED string, a switch and a feedback circuit. The DC-to-DC converter includes a first...
7178961 Voltage regulated light string  
A string set of series-connected incandescent flasher type lamps in which substantially all of the lamp filaments in the set are individually provided with a voltage regulated shunt circuit, which...
7166968 DC series connected light string with diode array shunt  
A series-connected string of incandescent light bulbs, operating on half-wave or full-wave rectified DC voltage, each having connected thereacross a filament voltage regulating shunting circuit...
7157859 Lighting device and lighting system  
First resistors (R 1 , R 2 ) for setting a forward current value are connected in series to light-emitting diodes (LED 1 , LED 2 ) respectively to constitute first serial circuits ( 112, 113 ),...
7138770 LED driving circuit  
An LED driving circuit that is directly activated by an AC power supply is disclosed. A driving circuit has a first and second pair of opposite branches. The first pair of opposite branches...
7122971 Driver circuit for driving a plurality of DC lamp strings  
A driver circuit for a DC light source supplies a voltage generated by a DC-to-DC converter for a plurality of lamp strings connected in parallel and a plurality of driving currents generated by a...
7119498 Current control device for driving LED devices  
A current control device for driving LED devices uses a switched-mode current control loop inside of an output intensity low-frequency pulse width modulation (PWM) control loop. This allows...
7102301 Year-round decorative lights with selectable holiday color schemes  
A decorative light strand has user-selectable color schemes corresponding to each holiday for year-round use. The light strand has a plurality of differently colored lights; a decorating selector...
7075250 Three-component protective head gear powered by a rechargeable battery  
A three-component, protective headgear or helmet is provided with a battery-powered LED head lamp, which may be used by construction workers, search and rescue persons, cyclists, police, fireman,...
7053560 Bi-directional LED-based light  
At least one pair of LEDs, preferably of the super-luminescent type, are connected in parallel but with reverse polarity in series with at least one resistor and driven by a voltage source, which...
7053557 Retrofit light emitting diode tube  
An LED light tube for replacement for fluorescent light tubes includes an elongated cylindrical transparent envelope, a base cap at each end of the envelope, and at least one LED device in...
7049757 Series connected OLED structure and fabrication method  
A light emitting device comprises a plurality of organic light emitting diode (OLED) modules. The OLED modules are arranged into a series group where the individual OLED modules are electrically...
7042165 Driver circuit for LED vehicle lamp  
A first vehicle lamp driver circuit for a light emitting diode (LED) array, the LED array having a first string of four LEDs in series and a second string of four LEDs in series. A first LED driver...
7034470 Serially connecting OLED devices for area illumination  
An area illumination apparatus, including a multiplicity of spaced-apart OLED devices electrically connected in series including a common substrate and each OLED device formed simultaneously over...
7026768 Apparatus flashing lights in sequences indicating directions of movement in response to detected fire conditions and in response to an electrical power failure  
A direction-indicating device includes a control unit, which is plugged into an external power source, and a number of interconnected lights, extending in a first direction. When the external power...
6972528 Structure for LED lighting chain  
An improved structure for LED lighting comprising an AC to DC converter, said converter comprising four rectifying diodes, and at least one LED serial set. The rectifying diodes can be divided into...
6946805 Controller for a light display  
A controller for controlling decorative light displays includes plural outlet ports for providing power to a plurality of decorative light strings. The controller alternately illuminates and dims...
Matches 1 - 50 out of 168 1 2 3 4 >