Abstract: A rotating device includes a base having a peripheral wall with a fastened top cover, an axial body with one end fixed to the base and another end joined with the top cover, a freely rotatable bearing body with the axial body thereinside, a radial dynamic pressure generating groove in either one of surfaces of the axial body, the axial and bearing bodies facing each other in a radial direction, a lubricating medium in a space between the axial and bearing bodies, a radially outward extending lower flange on the one-end side face of the axial body, and a radially outward extending upper flange on the another-end side face of the axial body, a bearing unit in a space between the upper and lower flanges in an axial direction, a lower rod fastened to the lower flange, and an upper rod encircling the lower rod fastened to the upper flange.

Abstract: A magnetic modulation motor includes an armature, a magnetic induction rotor, and a magnet rotor. The armature is provided with a multi-phase winding with m pole pairs. The magnetic induction rotor includes k magnetic paths. In the magnet rotor, 2n permanent magnets forming a polarity region with n pole pairs are separately and annularly placed. The armature, the magnet rotor, and the magnetic induction rotor are arranged in the order from a radially outer side to a radially inner side. In the magnetic induction rotor, the magnetic path has two ends projecting toward a magnetic flux entry and exit located at an outer diameter face of the magnetic induction rotor, and forms a magnetic flux path between the magnetic flux entry and exit. The magnet rotor includes magnetic flux penetration region magnetically penetrated by magnetic flux between each circumferentially adjacent two permanent magnets.

Abstract: An object of the invention is to provide a transverse flux machine apparatus (TFMA) with simple and economical core structure. The TFMA employs a core having laminated iron plates. The core has left diagonal portions and right diagonal portions for forming the 3D flux passages. A plurality of the 3D structures employs laminated iron cores with diagonal portions. By means of employing the diagonal portions, the core looks like a centipede. The centipede-like TFM called CTFM can have a plurality of types. A plurality of motor structure and a plurality of driving means are proposed for the CTFM.

Abstract: Provided is a rotary electric machine, including: a stator; and a rotor provided on the stator so as to be rotatable about a rotation shaft, in which the rotor includes, at an outer circumference thereof, magnetic poles arranged so as to have different polarities alternately, the magnetic poles being formed of a rotor core in which electromagnetic steel plates are stacked, the magnetic poles being excited by permanent magnets which are housed in gaps disposed at an outer circumferential part of the rotor core, and in which the rotor core includes, at an inner circumferential part thereof, in the same stack plane: a short circuit magnetic path connecting magnetic pole pieces which form the magnetic poles; and a protruding portion held in contact with the permanent magnets, which is positioned between magnetic pole pieces which are not connected to the short circuit magnetic path.

Abstract: Rotor formed by groups of materials (4) that orientate the magnetic field and magnets (2) in spiral lines, with the two magnetic poles of each magnet (2) facing the stator (3). Close to a magnetic pole of the end of the group, the material (4) that orientates the magnetic field protrudes towards the stator (3). This configuration enables to vary the field of each magnetic pole of the rotor which is projected to the stator; in this way, one end of the group of magnets (2) concentrates a very close magnetic pole in order to interact with the stator (3) and the opposite magnetic pole moves away gradually in order to decrease the interaction with the stator (3). The application is for magnetic motors.

Abstract: According to the present invention, in a rotor of an electric motor including a rotational shaft and a yoke fitted on an outer circumferential surface of the rotational shaft, fitting between an inner circumferential surface of the yoke and the outer circumferential surface of the rotational shaft is interference fit. Further, fitting between a convex portion (or concave portion) formed on the outer circumferential surface of the rotational shaft and a concave portion (or convex portion) formed on the inner circumferential surface of the yoke is also interference fit.

Abstract: An acoustic wave device includes a first electrode film arranged on a top surface of a piezoelectric substrate and defining electrodes including IDT electrodes and a second electrode film arranged to extend from the top surface of the piezoelectric substrate to a portion of a top surface of the first electrode film. The second electrode film defines electrodes including a wiring electrode 9 and pad electrodes and is made of a layered metal film including a plurality of metal films deposited in layers. The lowermost layer of the second electrode film is made of a metal selected from the group consisting of aluminum-copper alloy, nickel-chromium alloy, aluminum-silicon alloy, aluminum-titanium alloy, titanium, and copper, and the lowermost layer of the second electrode film is arranged to extend to a side surface of the second electrode film.

Abstract: An apparatus (200) comprising: a first electrode (204), wherein the first electrode comprises at least one layer of graphene; a second electrode (208); and a layer of piezoelectric material (206) disposed between the first electrode (204) and the second electrode (208), wherein the piezoelectric material (206) is able to resonate at a resonant frequency in response to application of an oscillating electrical signal to the first or second electrode (204, 208).

Abstract: A vibration wave driving apparatus including: a vibrator in which a first elastic body, a second elastic body and an electrical-mechanical energy converting element provided between the first and the second elastic bodies are arranged in a direction of a rotation axis; a rotor performing a rotational motion due to the vibration excited to the first elastic body by applying a driving signal to the electrical-mechanical energy converting element; an output transmitter rotating synchronously with the rotor; and a shaft passing through the vibrator, the rotor and the output transmitter in the direction of the rotation axis, wherein the output transmitter has a fitting portion to which the shaft or a flange fixed to the shaft is fitted, and wherein a portion of the fitting portion of the output transmitter and a portion of the first elastic body are overlapped in a direction perpendicular to the rotation axis.

Abstract: A smart material actuator apparatus having a smart material device, compensator, movable supporting member, two mechanical webs, two actuating arms, and a second stage assembly. Application of an electrical potential causes the smart material device to expand, thereby moving the actuating arms. That movement causes resilient strips to urge a second stage attachment surface in a direction substantially parallel to the smart material device. Optional dampening assemblies may be added where high speed operation is desired, and an optional valve assembly may be attached where an actuated valve, such as a high speed actuated air valve, is needed.

Abstract: An actuator apparatus comprising a smart material device, a compensator, a movable supporting member, at least three mechanical webs, at least three actuating arms, and a second stage assembly is disclosed wherein the mechanical webs comprise a first resilient member attached to the compensator and a second resilient member attached to said movable supporting member. A piezoelectric or smart material device is affixed between the first mounting surface and the compensator. The actuating arms comprise a first actuating arm end attached to one mechanical web and a second actuating arm end attached to the second stage assembly. The second stage assembly comprises resilient strips having a first end attached to the actuating arm and a second end attached to a second stage attachment surface. Application of an electrical potential causes the smart material device to expand, thereby urging the movable supporting member away from the compensator and causing the first and second resilient members to flex.

Abstract: An energy harvesting and storage system includes an array of piezoelectric electrodes, in which the piezoelectric electrodes generate electrical energy from mechanical displacements of the piezoelectric electrodes; and an array of capacitor electrodes disposed in proximity to the piezoelectric electrodes, in which the array of capacitor electrodes stores a portion of the energy generated by the piezoelectric electrodes. An energy system includes a substrate including an array of micro-post electrodes connected to a cathode layer of the substrate; an isolation material covering the array of micro-post electrodes; and an anode layer including electrodes filling the remaining region between the isolation material-covered micro-post electrodes, in which the anode layer, electrodes, isolation material, micro-post electrodes, and substrate are monolithically coupled.

Abstract: A perovskite oxide film is formed on a substrate, in which the perovskite oxide film has an average film thickness of not less than 5 ?m and includes a perovskite oxide represented by a general formula (P) given below: (K1?w?x, Aw, Bx)(Nb1?y?z, Cy, Dz)O3 - - - (P), where: 0<w<1.0, 0?x?0.2, 0?y<1.0, 0?z?0.2, 0<w+x<1.0, A is an A-site element having an ionic valence of 1 other than K, B is an A-site element, C is a B-site element having an ionic valence of 5, D is a B-site element, each of A to D is one kind or a plurality of kinds of metal elements.

Abstract: Provided are a piezoelectric vibrator, an oscillator, an electronic device, and a radio-controlled timepiece capable of preventing lowering of an electrical characteristic of a routing electrode during the frequency adjustment with respect to a piezoelectric vibrator whose frequency can be adjusted by irradiating a laser beam onto a weight metal film formed on a distal end of a vibrating arm portion. In a piezoelectric vibrator, a routing electrode is arranged in an offset manner toward one side with respect to a center line of a base substrate in the lateral width direction, and a piezoelectric vibrating piece is arranged in an offset manner toward a side opposite to the routing electrode with respect to the center line of the base substrate in the lateral direction.

Abstract: An electronic device includes a first structural part, a first electronic substrate correspondingly mounted on the first structural part, and a motor. The motor includes a second structural part and a second electronic substrate, a base directly formed on the second structural part, a rotor having at least one load, and a stator. The first and second structural parts are integrally made. The first and second structural parts are combined to a single electronic structural part. The stator has a plurality of winding coils and a driving circuit directly shaped on the second electronic substrate respectively for driving the rotor. The first and second electronic substrates are integrally made. The first and second electronic substrates are combined to a single electronic substrate. Alternatively, the driving circuit is directly shaped in the second electronic substrate.

Abstract: An electric machine (10), in particular for the motorized adjustment of movable parts in the motor vehicle, and method for producing an electric machine (10), comprising a housing part (16) in which a printed circuit board (20) for electrically activating the electric machine (10) is arranged, wherein at least one centering pin (44) which reaches into a centering opening (45) in the printed circuit board (20) is arranged in the housing part (16), wherein the centering pin (44) is plastically deformed at the free end (46) thereof in order to form a securing head (56).

Abstract: A stepper motor assembly includes a unipolar winding stepper motor, four drivers, and a transmission control module. The stepper motor has four coil parts. Each driver has a transistor connected to one of the coil parts. Each driver is operable to drive a phase of the stepper motor, where first and second phases are opposites of each other and third and fourth phases are opposites of each other. The transmission control module houses the four transistors. A transmission is also disclosed that includes the disclosed stepper motor assembly.

Abstract: A direct-current motor comprises: a stator including a shell, a main magnetic pole, and an exciting coil; a rotator disposed inside the stator; a brush holder disposed at an end of the shell; first and second carbon brushes disposed on the brush holder and contacted with the rotator, respectively; a current-direction controller disposed on the brush holder and connected with the first and second carbon brushes and first and second ends of the exciting coil, respectively, to control a direction of a current supplied to the exciting coil; and a cover disposed at the end of the shell to enclose the brush holder. The motor is compact in structure, small in volume, and occupies a small mounting space, and the work load of sealing and insulating is reduced, thus reducing the cost and improving the manufacture efficiency.

Abstract: A housing includes a housing body defining a receiving space, having a lateral opening, and including two fixed plates one of which is formed with a latch hole. A carrier device includes a carrier frame rotatably connected between the fixed plates and rotatable into and out of the receiving space through the lateral opening and having at least one first connection part, at least one locking member releasably engaged to the latch hole and including a second connection part slidably connected to the first connection part, and at least one resilient biasing element configured to bias the locking member toward the latch hole.

Abstract: A computer case for installing computer parts such as a motherboard therein is provided. Two casings (including a first casing and a second casing) of the same size, specification and type are assembled opposite to each other to form a complete case. In this way, the manufacturing cost can be greatly saved, and the finished product can be further equipped with panels or baffle plates of different specifications or types according to user requirements, so as to meet the manufacturing requirements for high customization.

Abstract: A computer enclosure includes a chassis and a number of supporting members. The chassis includes a bottom wall and two opposite sidewalls. A number of receiving slots are defined in a junction of the bottom wall and each sidewall. A pole extends from the chassis toward each receiving slot. Each supporting member is rotatably mounted to the pole. An inner wall of each receiving slot forms two positioning portions. A latching portion extends out from the rotating portion, to engage with one of the positioning portions.

Abstract: A washing machine appliance is provided with a door rotatably mounted to a cabinet of the appliance with a hinge. The hinge is supported by a bracket that extends between a front panel of the appliance and a flange. By extending between the front panel and the flange, the bracket can provide robust support for the hinge.

Abstract: A dishwasher for treating dishes according to a cycle of operation includes a tub having an open face, a door selectively moveable to open and close the open face, and comprising spaced interior and exterior panels having peripheral edges that are coupled along at least a portion of the peripheral edges by a peripheral wall to collectively define a door interior, and a controller mounting bracket located within the door interior.

Abstract: An electronic equipment cabinet is provided. The cabinet includes a plurality of sidewalls and a plurality of shelves. The sidewalls include a pair of opposing sidewalls. Each of the opposing sidewalls includes a plurality of shelf mounting points. The shelves are configured to be received at the shelf mounting points such that the shelves are configurable to accommodate components.

Abstract: A modular furniture building block for providing a modular furniture unit that can be combined with other units to construct or reconstruct any piece of furniture or structure. The modular furniture building block generally includes modular block panels that have a plurality of slots on the surface and/or sides and a plurality of cartridges to connect multiple block panels together at their slots. Multi-port receivers may be attached to the slots and the block panels may be connected by the cartridges via the multi-port receivers.

Abstract: A server cabinet for receiving a server includes two sidewalls forming two rails to support the server. A fixing board perpendicularly extends from a rear side of each sidewall toward the other sidewall and longitudinally defines a number of through holes. Each fixing board includes a blocking member. The blocking member includes a main portion, two curved claws extending from top and bottom ends of the main portion to be engaged in two through holes of the fixing board, and an extension piece extending from a side of the main portion to block a rear side of the server.

Abstract: A door locking device includes a supporting frame, a latch rotationally carried about a first axis by the supporting frame, a receiver for a locking tooth of the latch and first elastic element for rotating the latch between a first steady position in which, in use, with the door being closed, the tooth of the latch engages the receiver, and a second steady position, in which the tooth does not engage the receiver. The supporting frame is shaped to be fixed, in use, to one side of an access opening of the electric household appliance, integral with a casing of the latter; and the receiver has at least one seat carried, in use, by an edge of the door facing, in use, the side of the access opening provided with the supporting frame; moreover, the first axis is transversally movable with respect to itself, relatively to the supporting frame.

Abstract: A cabinet for receiving a server includes two opposite sidewalls, two movable frames slidably mounted to rear sides of the sidewalls, and a pair of rails mounted to front sides of the sidewalls. Each rail forms a supporting piece for supporting a server together with the supporting piece of the fixing member. Each movable frame has a blocking member for blocking a rear side of the server.

Abstract: A ground electrode is provided having a ground electrode body, the ground electrode body having an anchored end and a non-anchored end opposite the anchored end. The ground electrode includes a plateau extending from a surface of the ground electrode body adjacent the non-anchored end. In illustrative embodiments, the plateau is formed by removing a portion of the ground electrode body near the non-anchored end. The plateau is configured to be exposed around its periphery. A noble metal tip is fixably attached to the plateau.

Abstract: A spark plug including: a central electrode including an upper end and a lower end; an insulating part including an upper portion and a lower portion and surrounds the central electrode so that the lower end of the central electrode extends beyond the lower portion of the insulating part; and a cap including an upper portion and a lower portion that has an end section and that surrounds the insulating part so that the lower portion of the insulating part extends beyond the lower portion of the cap. The insulating part includes an annular groove, on the external periphery thereof, on the lower end of the cap, and the lower end section of the cap is placed in the groove.

Abstract: In the present invention, heat dissipation is improved by extending the creepage distance in a vacuum vessel according to the size of a flange portion, without lengthening the vacuum vessel in the direction in which an electron beam is emitted. A vacuum vessel (20) in which a flange portion (20a) having a hollow portion between a cold cathode (9) and an anode (11) is formed is used. One example is a vacuum vessel (20) in which a cold cathode vessel (21) and an anode vessel (22), both cylindrically shaped, are communicated with each other and a hollow flange portion (20a) is formed between the vessels (21, 22). A focusing electrode (14) and a getter material (15), for example, are disposed in the hollow portion of the flange portion (20a). A cold cathode (9) which has a guard electrode on the outer side of the periphery of a carbon film structure (10) formed on a substrate (7) may be used. The carbon film structure (10) may be formed in the middle of an electrode surface of the substrate (7).

Abstract: Described are methods and apparatus for providing fluorescent lamps having a two-layer phosphor coating that includes a base coating and a top coating that economically provides a high color rendering index (CRI) of at least 87 with improved brightness. In an embodiment, a low-pressure discharge lamp includes a light transmissive envelope having a basecoat phosphor layer disposed on an inner surface, wherein the basecoat phosphor layer includes less than ten percent weight of a rare earth phosphor. Also included is a topcoat phosphor layer on a surface of the base coat phosphor layer that includes a blend of at least red, green, green-blue and blue emitting rare earth phosphors, and a fill gas composition within the light transmissive envelope.

Abstract: A white light emitting device according to an embodiment includes: a light emitting element having a peak wavelength in a wavelength range of 430 nm or more and 470 nm or less; a first fluorescent material emits light with a first peak wavelength of 525 nm or more and 560 nm or less; a second fluorescent material emits light with a second peak wavelength longer than the first peak wavelength; and a third fluorescent material emits light with a third peak wavelength of 620 nm or more and 750 nm or less, which is longer than the second peak wavelength. The first fluorescent material and the second fluorescent material has a composition of MSi?O?N?, and when the first peak wavelength is denoted by ?1 (nm), whereas the second peak wavelength is denoted by ?2 (nm), 1100??1+?2 and ?2??1?60 are satisfied.

Abstract: According to one embodiment, the luminescent material shows a luminescence peak in a wavelength range of 570 to 670 nm when excited with light having an emission peak in a wavelength range of 250 to 520 nm. The luminescent material includes a host material having a crystal structure substantially same as the crystal structure of Sr2Si7Al3ON13. The host material is activated by Eu, and includes Sr and Ca to satisfy a relationship of 0.008?MCa/(MSr+MCa)?0.114, where MCa is a number of moles of Ca and MSr is a number of moles of Sr.

Abstract: Embodiments of the present invention are directed to nitride-based, red-emitting phosphors in red, green, and blue (RGB) lighting systems, which in turn may be used in backlighting displays and warm white-light applications. In particular embodiments, the red-emitting phosphor is based on CaAlSiN3 type compounds activated with divalent europium. In one embodiment, the nitride-based, red emitting compound contains a solid solution of calcium and strontium compounds (Ca,Sr)AlSiN3:Eu2+, wherein the impurity oxygen content is less than about 2 percent by weight. In another embodiment, the (Ca,Sr)AlSiN3:Eu2+ compounds further contains a halogen in an amount ranging from about zero to about 2 atomic percent, where the halogen may be fluorine (F), chlorine (Cl), or any combination thereof. In one embodiment at least half of the halogen is distributed on 2-fold coordinated nitrogen (N2) sites relative to 3-fold coordinated nitrogen (N3) sites.

Abstract: Some embodiments disclosed herein include a ceramic body including a first region and a second region. The first region may include a host material and first concentration of a dopant that is effective to produce luminescence. The second region may include the host material and second concentration of the dopant. In some embodiments, the first region has an average grain size that is larger than an average grain of the second region. The ceramic body may, in some embodiments, exhibit superior internal quantum efficiency (IQE). Some embodiments disclosed herein include methods for the making and using the ceramic bodies disclosed herein. Also, some embodiments disclosed herein lighting apparatuses including the ceramic bodies disclosed herein.

Abstract: To provide a new phosphor of which fluorescence contains much red light component and has a large full width at half maximum, the crystal phase represented by the formula [I] is included in the phosphor. R3?x?y?z+w2MzA1.5x+y?w2Si6?w1?w2AlW1+w2Oy+w1N11?y?w1??[I] (R represents La, Gd, Lu, Y and/or Sc, M represents Ce, Eu, Mn, Yb, Pr and/or Tb, A represents Ba, Sr, Ca, Mg and/or Zn, and x, y, z, w1 and w2 are the numeric values in the following ranges: (1/7)?(3?x?y?z+w2)/6<(1/2), 0<(1.5x+y?w2)/6<(9/2), 0<x<3, 0?y<2, 0<z<1, 0?w1?5, 0?w2?5, and 0?w1+w2?5.

Abstract: A red-emitting phosphor comprises a nitride-based composition represented by the chemical formula M(x/v)M?2Si5-xAlxN8:RE, wherein: M is at least one monovalent, divalent or trivalent metal with valence v; M? is at least one of Mg, Ca, Sr, Ba, and Zn; and RE is at least one of Eu, Ce, Tb, Pr, and Mn; wherein x satisfies 0.1?x<0.4, and wherein the phosphor has the general crystalline structure M?2Si5N8:RE, Al substitutes for Si within the crystalline structure, and M is located substantially at interstitial sites. Furthermore, the phosphor is configured such that 1,000 hours of aging at 85° C. and 85% humidity results in a deviation in chromaticity coordinates CIE ?x and ?y of less than about 0.03. Furthermore, the phosphor absorbs radiation in the UV and blue and emits light with a photoluminescence peak wavelength within the range from about 620 to 650 nm.

Abstract: An display device comprising a plurality of pixel define units is disclosed. Each pixel define unit comprises patterned pixel define sections, a first electrode layer, an emission layer and a second electrode layer. The patterned pixel define section has a first lateral surface and a second lateral surface opposite to the first lateral surface. The first electrode layer comprises a first sub-electrode and a second sub-electrode. The first and second sub-electrodes are spaced apart from each other and respectively disposed on the first and second lateral surfaces. The emission layer is disposed on the first electrode layer. The second electrode layer is disposed on the emission layer.

Abstract: A white light emitting device of an embodiment includes: a light emitting element having a peak wavelength in a wavelength range from 430 to 470 nm both inclusive, a first fluorescent material formed over the light emitting element, and emitting light having a first peak wavelength of 530 to 580 nm both inclusive and having a first half width, and a second fluorescent material formed over the light emitting element, and emitting light having a second peak wavelength that is longer than the first peak wavelength and ranges from 570 to 620 nm both inclusive, and having a second half width that is 100 nm or less and is equal to or narrower than the first half width.

Abstract: There is described a circuit for retro-lighting a display, comprising a group of white light-emitting diodes connected in series between a first node and a second node and a circuit for driving said group of series-coupled light-emitting diodes comprising: a power supply providing a positive voltage supplied to the first node; and a charge pump converter providing a negative voltage obtained from the positive voltage, said negative voltage being supplied to the second node.

Abstract: A system for controlling a lighting system for a vehicle includes an ambient light sensor operable for detecting a level of ambient light and a lighting circuitry. The system also includes a logical control unit that receives input signals from a vehicle control unit, a user input device and the ambient light sensor. The logical control unit controls a voltage on the lighting circuitry to provide a minimum voltage based on the one or more input signals.

Abstract: An intelligent LED drive power has an EMI filter, two AC/DC constant current units, a microcontroller, a switch unit, two state detect circuits and an assistant power. The input and output of the constant current units are alternatively connected to the output of the EMI filter and the LED light source through the switch unit. The inputs of each state detect circuits are separately connected to the output of one of the constant current units. The outputs of each state detect circuit are separately connected to the microcontroller input; the microcontroller output is connected to the switch unit input; the assistant power input is connected to the EMI filter output. The assistant power output is connected to the microcontroller. The switch controls the two AC/DC constant current units by detecting the mains supply input voltage and the AC/DC constant current unit output voltage and current.

Abstract: An emergency lighting device includes a backup power supply for illuminating a light during a power loss. The lighting device includes a transmitter, which transmits a signal to a receiver during a power outage. When the receiver receives the signal, the source of power switches from the primary power source, e.g., AC utility power, to a backup power source, e.g., DC battery power. The lighting device may include an LED lamp in which AC-LEDs are selectively illuminated when primary power source is delivered and DC-LEDs which are selectively illuminated during a power outage.

Abstract: A method for using an electronic ballast circuit configured to operate a high intensity discharge (HID) lamp. Multiple light emitting diodes (LEDs) are attached to the current output of the electronic ballast circuit, and current is driven from the current output to light said LEDs. Optionally, prior to driving current through the LEDs, the impedance of the current output is sensed; and the current is driven through the LEDs to light the LEDs upon detection of an impedance significantly lower than an impedance characteristic of the HID lamp. Ignition appropriate to ignite the high intensity discharge is not performed when LEDS are attached to the current output. Alternatively, a signal is provided to disconnect the LEDs during a high voltage output for ignition of the high intensity discharge (HID) lamp.

Abstract: The plasma shield device (13) comprises a hollow structure (40) made of monocrystal body of silicon carbide and having an inside space (40a) and a first and second openings (40b,40c) which are opposed to each other across the inside space. During operation of the plasma generation apparatus, the internal space of the hollow structure forms a discharge zone in which the plasma is generated. Discharge gas is supplied to the internal space of the hollow structure through the first opening and the EUV radiation is mainly emitted through the second opening.

Abstract: A lighting device includes a DC/DC power converter, a controller/processor electrically connected to the DC/DC power converter, a light emitting diode (LED) current control circuit communicably coupled to the controller/processor and electrically connected to the DC/DC power converter, and two or more LEDs comprising at least a first color LED and a second color LED electrically connected to the LED current control circuit. The LED current control circuit provides an on/off signal having a cycle time to each LED in response to one or more control signals received from the controller/processor such that the two or more LEDs produce a blended light having a specified color based on how long each LED is turned ON and/or OFF during the cycle time.

Abstract: A system for lighting an interior of a building according to one example embodiment includes a curb positioned on an exterior of the building for receiving natural light. A light duct is positioned within the curb having a reflective inner surface for transferring the natural light. A light fixture is connected to an outlet of the light duct such that both natural light and artificial light are emitted from the light fixture to the building interior. A photo sensor is positioned in the building interior to sense an illumination level therein. A controller in communication with the photo sensor and the light fixture is programmed to adjust the amount of light emitted by a dimmable light source in the light fixture in response to fluctuation in the illumination level sensed in the building interior in order to maintain a desired illumination level.

Abstract: A light-emitting diode (LED) fluorescent lamp which can replace a typical fluorescent lamp is provided. The LED fluorescent lamp includes an LED array including a plurality of LEDs connected in series; first through fourth connection pins; first through fourth capacitors connected to the first through fourth connection pins, respectively; a first diode having an commonly connected to second ends of the first and third capacitors and a cathode connected to a first end of the LED array; a second diode having an anode connected to a second end of the LED array and a cathode commonly connected to second ends of the second and fourth capacitors. The LED fluorescent lamp can replace a typical fluorescent lamp without a requirement of the installation of additional equipment or the change of wiring.

Abstract: A lighting device comprises groups of solid state light emitters, a sensor and circuitry. If the emitters are illuminated, the sensor is exposed to combined light from the groups, and senses only a portion of the combined light. The circuitry adjusts current applied to at least one of the emitters based on an intensity of the light sensed. Also, a device comprising emitters, a circuit board and a sensor, at least one of the emitters being positioned on the first circuit board and the sensor being spaced from the circuit board. Also, a lighting device comprising emitters, a sensor, and circuitry which adjusts current applied an emitters based on detection by the first sensor, the circuitry comprising a differential amplifier circuit. Also, a lighting device, comprising light emitters and circuitry which adjusts current applied to only some of the emitters based on ambient temperature. Also, methods of lighting.