Abstract: A power supply circuit includes a number N, N?2, of parallel connected, cyclically switched electronic converters having outputs connected to a common output terminal; and a controller providing switching pulse signals switching the converters with a switching frequency that is the same for all converters; load circuits connected to the output terminal; a PLC transmitter modulating an output current from the output terminal; and a PLC receiver in each load circuit, the controller switching the converters with interleaved switching pulse signals; the PLC transmitter modulating the output current by switching the controller between at least two modes of operation that differ in phase relations and/or pulse shapes of the switching pulse signals, changing a ripple frequency spectrum of the output current such that a suppression amount of a predetermined frequency component is changed depending upon the mode of operation; and the PLC receiver detects the predetermined frequency component.

Abstract: A power system for a group of LED modules each of which includes a plurality of LEDs or series-connected LEDs, utilizes a plurality of polarized direct current power supplies with one electrical polarity separated, and the other electrical polarity commonly connected. Each individual LED, or each set of series-connected individual LEDs, in each of the LED modules, are connected in series to each of the direct power supplies and then to an opposite polarity to complete an electrical circuit.

Abstract: A TRIAC low voltage dimming control system for effectively controlling the dimming of low voltage lighting using a TRIAC dimmer. The TRIAC low voltage dimming control system generally includes a TRIAC analyzer that applies a test voltage to a TRIAC dimmer and measures the amount of time required for the TRIAC dimmer to conduct electricity. Utilizing the measured time for the TRIAC dimmer to conduct electricity, the TRIAC analyzer is able to calculate an approximate state of the TRIAC dimmer and provide a corresponding level of DC electrical power to a DC load.

Abstract: An LED lighting kit comprises an extrusion, an LED strip, a tapered wedge, and a mounting clip. The clip is sized and shaped to springably engage ledges in a first channel of the extrusion when the strip is mounted. In one aspect, two extrusions are butted end-to-end and are aligned by inserting the tapered wedge into the first channel of each extrusion prior to butting them together. The extrusion contains a second channel that houses the LED strip. A translucent diffuser is springably inserted into the second channel, thereby diffusing light that is emitted by the LED strip. End caps are inserted into the ends of the extrusion to complete the light kit. At least one of the end caps has a hole to admit electrical wires to power the LED strip.

Abstract: An LED connector half (500) mates with a wire connector half (300) to connect a light strip (100) comprising LEDs (115) to a pair of wires. The LED half includes a hinged top (700) with an opening (705) to admit an end LED on the strip when the top is closed, securing the strip to the connector half without blocking the LED. The wire half secures a pair of wires (315) to terminals (305) in a housing (310). The wire half is inserted into the LED half, connecting the Electrodes and terminals. The halves are held together by a tongue (320) and socket (800). In another aspect, a connector (1100) joins two light strips by capturing the LEDs at the ends of the strips in openings (1110) and clamping conductive electrodes (1140) against the strips by closing a lid (1105) against the body, without obscuring LED light output.

Abstract: The invention described herein is a very thin flat panel LED luminaire, including a flat baseboard, a flat reflection panel, a flat acrylic panel, a flat diffusion panel, LED bar, and aluminum encasement frame which combines with the baseboard to form the chassis for the luminaire. The LED bar is placed along either or both sides of the stack. The acrylic panel is printed with a mesh-like mask pattern of dots in a pattern in which the density of the pattern is decreases the farther away from the LED bar the pattern is, differentially coupling the light from the point source LED bar from the reflection panel into the flat acrylic panel so that illumination across the luminaire is substantially uniform.

Abstract: LED light tube replaces a fluorescent light mounted in a fluorescent light fixture. Main power is feed only to the first socket end mount of the fluorescent fixture. The LED light tube includes an elongated tubular structure substantially the size and length of the fluorescent light tube and extends between the first and second end mounts of the fixture. Within an end region of the tubular structure and adjacent the first tube end mount, an internal power supply converts the main line power to LED bank power. The tubular structure of the LED light includes an elongated semi-spherical substantially transparent top cover mounted atop a printed circuit board substrate. The substrate supports a plurality of LEDs thereon.

Abstract: There is provided a light emitting diode apparatus for operation with varying input electrical sources. The apparatus comprises an array of light emitting diodes to produce light, and a variable input power supply adapted to provide an electrical supply of predetermined value to the light emitting diodes from a varying electric signal provided by varying input electrical sources. In one embodiment, the light emitting diode apparatus is for use as a replacement of a fluorescent tube in an existing fluorescent fixture. In another embodiment, the light emitting diode apparatus is for use with connection to conventional AC voltage sources used throughout the world.

Abstract: An LED lamp for outdoor and large space lighting, particularly for streets, warehouses car parks and the like, is adapted for fitting into legacy light fittings designed for sodium bulbs and the like. The LED lamp includes light emitting diodes arranged over a surface of the lamp, is rotatably connected through a rotatable electrical connection to a screw-in adaptor for insertion into a legacy screw-in socket, such that the screw in adaptor is rotatable independently of the lamp, so that the legacy screw in socket can be used even though the light fitting is too small to allow rotation of the LED lamp. Additional variants provide for cooling airflow through the light fitting, for temperature control of the LEDs, and for failure protection, to ensure a longest possible lamp lifetime.

Abstract: A bus line LED module includes a printed circuit board on which LEDs are mounted and lens portion formed over the LEDs. A pair of wires is positioned beneath the printed circuit board within a bottom portion assembly to form a top portion assembly. A pair of windows within a bottom portion assembly enables access to a portion of the wires where a metal-to-metal contact to the metal inner portion of the wires is made. A pair of metal connectors extends from the printed circuit board to make metal-to-metal contact with the metal wires. A sealing connection is made between the top portion assembly and the bottom portion assembly.

Abstract: A light device with remote function includes a remote controller and a light stick. When the remote controller is switched on, the remote controller transmits a control message to the light stick, wherein one lighting mode datum is attached to the control message; the light stick lights according to one lighting mode which corresponds to one lighting mode datum. Therefore, when there are many users with light sticks in a large concert, the light sticks of the users are all controlled by only one remote controller; therefore, the lighting modes of the light sticks are the same as each other; in other words, a light effect in front of a stage would be performed uniformly.

Abstract: A system and method for interconnecting LED modules that receive electrical energy from a direct current electrical energy power supply includes a first type of mating connector to provide an input of direct current electrical energy to a printed circuit board contained within an interconnectable LED module and a second type of mating connector to provide an output of direct current electrical energy to and interconnecting with another interconnectable LED module. The second type of mating connector attaches to the first type of mating connector in the next LED module in a string of interconnectable LED modules.

Abstract: A tunable color LED module comprises at least two sub-modules, each comprising an LED, a wavelength converting element (WCE) and a reflector cup. The total light emitted by the module comprises light generated from each LED and WCE and the module is configured to emit a total light having a predefined color chromaticity when activation properties of the LEDs are managed appropriately. The total light may have a broad white emission spectrum. The module combines the benefits of a low cost with uniform chromaticity properties in the far field, and offers long and controlled lifetime at the same time as flexibility and intelligence of tunable color chromaticity, Color Rendering Index (CRI) and intensity, either at manufacture or in an end user lighting application. A controlled LED module system comprises a control system for the managing activation properties of the LEDs in the sub-modules. Also described is a method of manufacture.

Abstract: A low power bypass circuit for use with a string of series-connected LEDs includes a semiconductor diode and resistor connected in series, which semiconductor diode and resistor combination become conductive upon the failure of an LED or upon the improper, reverse polarity connection of the string of series-connected LEDs to a power supply. When the semiconductor and resistor combination becomes conductive, a three-terminal gate-controlled semiconductor switching device becomes conductive, thereby bypassing the failed LED and protecting the integrity of the string of series-connected LEDs upon the improper reverse polarity connection of the string of series-connected LEDs to a power supply.

Abstract: A camera, a mechanical movement system and a video control board are used to locate a recognizable light source on a stationary or moving object to be illuminated. Once the recognizable light source is recognized by the camera, the video control board provides instructions to the mechanical movement system to move the light output from the source of illumination in a track light fixture assembly to the location of the recognizable light source.

Abstract: A system for replacing linear fluorescent lamps with LED modules in a cabinet sign includes an LED module support structure. The LED module support structure may be attached to the raceways of the cabinet sign or to the sockets formerly used for mounting fluorescent lamps between the raceways.

Abstract: Disclosed is an LED packaging structure using a distant fluorescent powder layer and a manufacturing method thereof. A fluorescent powder layer (10) with a recessed cavity cover structure is used in the packaging structure. A group of dies for manufacturing the fluorescent powder layer are specifically designed in the present invention. The fluorescent powder layer manufactured by using the dies has a regular structure and an even thickness. The fluorescent powder layer and a substrate (30) form a closed cavity for accommodating a chip (20) on the substrate, the cavity is vacuum, and the effect of distant fluorescent powder coating can be achieved. The manufacturing method can be also used for batch manufacturing of the fluorescent powder layers, and repeated adhesive dispensing for each chip in the traditional batch packaging process of the fluorescent powder layers is avoided, thereby improving the LED packaging efficiency.

Abstract: A light emitting diode (LED) and a method for manufacturing the same is disclosed. The disclosed LED comprises a first substrate, an epitaxy layer, and a plurality of bumps. The first substrate is doped with YAG: Ce and is for converting a first light with a first range of wavelength to a second light with a second range of wavelength. The epitaxy layer is disposed on the first substrate and is for emitting the first light. The plurality of bumps are disposed on the epitaxy layer. With the first substrate doped with YAG: Ce, the disclosed LED does not need additional phosphor to convert the first light with the first range of wavelength to the second light with the second range of wavelength.