Abstract: An LED driving circuit includes: a bridge rectification circuit configured to receive an AC voltage and perform full-wave rectification on the AC voltage, the bridge rectification circuit including a first LED block, a second LED block, a third LED block, and a fourth LED block each including n LEDs (where n is a positive integer equal to or greater than one); a constant current IC configured to constantly limit a current flowing through the bridge rectification circuit; and a Vcc stabilization circuit connected between the constant current IC and a driving voltage supply node positioned between LEDs constituting one of the first to fourth LED blocks, and configured to stabilize a voltage applied through the bridge rectification circuit and provide the constant current IC with a stabilized driving voltage.

Abstract: Electronic circuitry for color-mixing in an LED light fixture during AC power dimming is disclosed to achieve adjustable color temperature. According to one embodiment, a dimmable LED light fixture has first, second, and third LED light sources, the first and second LED light sources producing white light, the third LED light source producing colored light, the LED driver configured to power the LED light sources by providing a single-channel variable-DC current source having two output terminals, and a current regulator for maintaining the current in the third LED light source path substantially constant as the LED driver output current is decreased when the AC power is reduced by the dimmer module, thereby altering the color of the light produced by the combination of the LED light sources.

Abstract: One embodiment in accordance with the invention can include a circuit for controlling a light emitting diode (LED) lighting fixture via a power line. The circuit can include a power switch coupled to the power line and is for outputting a firing angle. Additionally, the circuit can include a control circuit coupled to the power switch and is for implementing firing angle control of the power switch. Furthermore, the circuit can include a translator coupled to receive the firing angle and for mapping the firing angle to a function of the LED lighting fixture.

Abstract: An LED arrangement includes a first LED chain having first LEDs; a second LED chain having second LEDs; a circuit arrangement for coupling the first and second LED chains to a supply source; wherein the circuit arrangement is configured such that the first and second LED chains can be coupled to or decoupled from the supply source, wherein the first LED chain can be coupled to the supply source at first points in time and the second LED chain can be coupled to the supply source at second points in time; wherein the circuit arrangement is configured such that, in the case of a coupling of the LED arrangement to the supply source, a current having a first average current intensity through the first LED chain and a current having a second average current intensity through the second LED chain, wherein the LEDs are arranged depending on their current intensities.

Abstract: A light emitting module includes a body, first to Mth (wherein, M is an integer of 2 or greater) light emitting devices provided on the body to be spaced apart from each other, and a turn-on controller controlling the first to Mth light emitting devices to turn on. An mth (1?m?M) light emitting device among the first to Mth light emitting devices comprises first to Nth (wherein, N is an integer of 2 or greater) light emitting cells connected to each other in series. An nth (1?n?N) light emitting cell among the first to Nth light emitting cells includes at least one light emitting structure, and the turn-on controller simultaneously turns on or turns off the nth light emitting cells of the first to Mth light emitting devices.

Abstract: A power converter for an LED assembly includes a switched mode power supply arranged to power the LED assembly, an AC/DC converter arranged to provide a DC supply voltage to the switched mode power supply, and a control unit arranged to receive an input signal representing a required load voltage for powering the LED assembly. The control unit is arranged to control the AC/DC converter based on the input signal.

Abstract: A dimming circuit and a lighting device using the same are provided. The dimming circuit comprises an interface trigger unit, an average duty cycle calculating unit, a control voltage calculating unit and a comparing unit. The interface trigger unit receives an on-time of each pulse width from each period in a PWM signal. The average duty cycle calculating unit is coupled to the interface trigger unit and calculates a ratio of the on-time to the period. The control voltage calculating unit is coupled to the average duty cycle calculating unit, and calculates a desired voltage according to the ratio. The comparing unit is coupled to the control voltage calculating unit, and sends the desired voltage and a differential voltage to a driving circuit.

Abstract: The present invention relates to a backlight dimmer circuit and a backlight dimming method. The backlight dimmer circuit includes a PLL dimming module, which detects a rising edge of a 3D synchronous signal to generate multiple channels of 3D mode dimming signal in phase with the 3D synchronous signal; a phase delay module, which generates time-divided outputs of the multiple channels of 3D mode dimming signal according to a delay set value; an external dimming module, which receives an external dimming signal to generate a 2D mode dimming signal; and a trigger, which receives the 2D mode dimming signal and the multiple channels of 3D mode dimming signal and determines whether to output the 2D mode dimming signal or the multiple channels of 3D mode dimming signal according to a 2D/3D conversion signal.

Abstract: A current driver circuit for regulating a light emitting diode (LED) is disclosed. An example driver circuit uses one input node of the driver circuit for controlling both maximum brightness and dimming of an LED coupled to an output node of the driver circuit. The driver circuit supplies a reference voltage (VREF) to its input node. A microcontroller is coupled through a resistor or other resistive component to the input node of the driver circuit and provides the input current, where the input current is adjustable by the resistor value. The driver circuit is configured to drive multiple times the input current from its output node. By adjusting the resistor value the output current of the LED is adjusted. The microcontroller is configured to provide pulse width modulation (PWM). By reducing the duty cycle of the PWM waveform the dimming of the LED can be controlled.

Abstract: An LED light and communication system is in communication with a broadband over power line communications system. The LED light and communication system includes at least one optical transceiver light fixture. The optical transceiver light fixture includes a plurality of light emitting diodes, at least one photodetector, and a processor. A facility management unit is in communication with the processor. The facility management unit is constructed and arranged to control the operation of the optical transceiver light fixture.

Abstract: A device suppresses flicker and improves compatibility of a lamp including at least one solid state light source, the lamp being operably connected to a control circuit, such as a dimmer circuit. The device includes a connector enabling connection of the solid state light source to a lamp socket configured to receive an incandescent light source, and an adapter circuit connected in parallel with the at least one solid state light source when the solid state light source is connected to the socket via the connector. The adapter circuit provides a resistive path for current to pass through the lamp, during all or part of the AC mains cycle.

Abstract: The present disclosure is directed to a hysteresis based driver that incorporates the forward voltage of the LEDs being driven into the design of the driver itself. Instead of providing a typical fixed voltage reference, the forward voltage of one or more LEDS driven by the driver is used as a voltage reference. As the input voltage varies during operation of the one or more LEDs, the current varies as well. This current change is larger than it would be without the LEDs and only resistors. This variable current measurement may be used as input into a hysteresis circuit that controls the switch that turns on and off the one or more LEDs. As such, the driver may not incorporate or use a typical fixed voltage reference such as one provided by a zener diode.

Abstract: A discharge lamp lighting method for controlling lighting of a discharge lamp includes varying an amount of generation (current value) of overshoot and undershoot generated in a waveform of a drive current that is applied when driving the discharge lamp, according to a magnitude of drive power supplied to the discharge lamp and a drive mode.

Abstract: An LED lamp includes a frame, a power circuit, a driver circuit coupled with the power circuit, an optical member comprising a reflective surface and a lower surface, the reflective surface defining an optical cavity, a light source support member defining a first aperture, and a light source comprising a plurality of LED dies coupled to and driven by the driver circuit. The light source support member is positioned proximate to the lower surface and generally conforms to a shape of the lower surface forming a gap therebetween defined as a second aperture. Additionally, the light source support member is configured to carry the light source in an orientation such that light emitted by the plurality of LEDs is incident upon the reflective surface. Furthermore, the reflective surface is configured to reflect light incident thereupon in the direction of at least one of the first aperture and the second aperture.

Abstract: A music flasher controller comprises a central control module, a plurality of execution modules, a plurality of light-emitting units, a power supply module, a music encoding module, a player, a signal collecting module, and a signal analysis module, thereby allowing rhythmed on/off change of the control lamp with music, exhibiting a music-light-show effect and having a flexible form, with the player not necessary to be wire-connected with the signal collecting module, thus having the advantages of easy construction, simple installation, and effective cost reduction. A music flasher control system equipped with the music flasher controller enables flexible addition or reduction of the lamp group, thus having the advantage of high scalability. A control method of the music flasher controller is also provided such that the lamp can be on/off with the music rhythm.

Abstract: A circuit in a configurable light timer for receiving data to control the operation of the configurable light timer is described. The circuit comprises an input portion coupled to receive first data from a portable memory device by way of a connector on the configurable light timer; and a data transceiver coupled to receive wireless communication signals according to a wireless communication protocol, the wireless communication signals comprising second data for implementing the configurable light timer; wherein the second data coupled to the configurable light timer by way of the wireless communication link comprises timing characterization data. A method of receiving data to control the operation of the configurable light timer is also disclosed.

Abstract: The rear wheel driving device 1 includes: an electric motor 2A connected to a left rear wheel LWr; an electric motor 2B connected to a right rear wheel RWr; and a control device 8 for controlling the electric motors 2A and 2B. The control device 8 controls the electric motors 2A and 2B such that a third relationship is satisfied as the first priority based on at least either a first relationship or a second relationship, and the third relationship. The first relationship is defined as including a sum of right and left wheel torques, a sum of right and left motor generator torques, a sum of right and left wheel driving forces, or a sum of right and left motor generator driving forces. The second relationship is defined as including a difference between right and left wheel torques, a difference between right and left motor generator torques, a difference between right and left wheel driving forces, or a difference between right and left motor generator driving forces.

Abstract: A construction machine includes a turning electric motor configured to drive a turning mechanism configured to cause an upper-part turning body to turn relative to a lower-part traveling body and a control unit configured to control driving of the turning electric motor. The control unit is configured to cause the output of the turning electric motor to continue after the turning speed of the upper-part turning body becomes zero, based on the magnitude of the output or the direction of the output of the turning electric motor at the time when the upper-part turning body is decelerated and its turning speed becomes zero.

Abstract: Provided is a control apparatus of a vibration-type actuator for generating an elliptical motion of contact portions by a common alternating current including a frequency determining unit for setting a frequency of the alternating current. The frequency determining unit sets the frequency of the alternating current for changing an ellipticity of the elliptical motion, within a frequency range such that ellipticity changing frequency ranges set for the vibrators are overlapped, and the ellipticity changing frequency ranges are set for the vibrators as frequency ranges between an upper limit and a lower limit, such that the lower limit is a maximum resonant frequency at a time of changing the ellipticity, and the upper limit is larger than the lower limit and is a maximum frequency for the relative movement of the driving member.

Abstract: The present invention relates to a motor assembly, a method of operation thereof and a transport vehicle provided with the motor assembly. The motor assembly is provided with an energy source switching controller that is in synchronization with motor operation and provides an improved utilization of energy storage sources in an electric, hybrid electric, or fuel cell based motor vehicle drive train application.

Abstract: A power converter includes an inverter, a contactor for connecting a battery to the inverter in order to supply DC power from the battery to the inverter and for disconnecting the battery from the inverter in order to stop an operation to supply the DC power from the battery to the inverter, a smoothing capacitor connected in parallel to the battery through the contactor, a discharge circuit that is provided with a discharge resistor and a switching device connected in series to the discharge resistor and is connected in parallel to the smoothing capacitor to discharge electric charge from the smoothing capacitor, a voltage measurement circuit, a voltage-dividing circuit for dividing the voltage across the terminals of the smoothing capacitor to generate a partial voltage to be input to the voltage measurement circuit and a control circuit of the switching device.

Abstract: The invention relates to an electronically commutated electric motor. The electronically commutated electric motor has a power output stage connected to a stator of the electric motor, and a processing unit connected to the power output stage. The processing unit is designed to drive the power output stage to produce at least one stator current. The electric motor has a current sensor which is designed to record the stator current produced by the power output stage and to generate a current signal representing the stator current. The processing unit is designed to use the current sensor to record at least one current value of the current at a recording time within an interval of time and to determine a current profile of the current in the interval of time at least on the basis of the current value and to drive the power output stage to energize the stator on the basis of the current profile determined.

Abstract: An electric drive system may include a plurality of heat sensitive components, at least one temperature sensor positioned in or on each of the components and a system controller. The temperature sensors may be interconnected with the system controller to transmit temperature data from their respective heat sensitive components to the system controller. The system controller may be configured to transmit a reduced performance command in the event that a reached-temperature-threshold-limit signal is received from any one or more of the temperature sensors. System shutdown due to over temperature faults may be avoided.

Abstract: A rotary electric machine includes a rotor that is arranged such that an axis of rotation of the rotor extends in a horizontal direction, a stator that is provided with an coil end on which coolant is supplied from a position above the coil end in a direction of gravitational force, and a temperature sensor that is arranged on an outer peripheral face of the coil end at a position near a horizontal plane that includes the axis of rotation of the rotor. When the flow rate of the coolant is below a threshold the temperature sensor measures the coil temperature. When the flow rate of the coolant is above a threshold, so that coolant is in direct contact with the temperature sensor, it measures the coolant temperature.

Abstract: Systems and methods are provided for diagnosing stator windings in an electric motor. An exemplary method for diagnosing stator windings in an electric motor involves determining an input energy imbalance across phases of the stator windings for an electrical period of the electric motor and identifying a fault condition when the input energy imbalance is greater than a first threshold value. In some embodiments, an input energy ratio across phases of the stator windings is also determined for the electrical period, wherein the fault condition is identified as a phase-to-phase short circuit fault condition when the input energy ratio is greater than a second threshold value and the input energy imbalance is greater than the first threshold value, or alternatively, as an in-phase short circuit fault condition when the input energy ratio is less than the second threshold value.

Abstract: A method is described for activating a multiphase machine that has a link circuit equipped with a link circuit capacitor, phase windings, and one high-side switch and one low-side switch per phase. The switches associated with the individual phases have control signals applied to them by a control unit. The control unit provides, in successive activation cycles, pulse-shaped control signals for the switches, the pulse widths and pulse onsets of which are respectively varied within an activation cycle in such a way that the link circuit current is reduced.

Abstract: A control system for an electric motor (10) comprises a current sensing means (14) arranged to produce a current sensing output indicative of electric current in the motor, current control means (20) arranged to receive a current demand and to control voltages applied to the motor, and correction means (26) arranged to receive the current sensing output and the current demand, and use them to generate a correction signal. The current control means (20) is arranged to receive the correction signal and to use the correction signal to correct the voltages applied to the motor.

Abstract: The invention relates to an operating state circuit for actuating an inverter (3), which supplies an n-phase electrical machine (5) with an n-phase supply voltage via phase connections (4a, 4b, 4c), wherein n?1, comprising an evaluation device (6) which is connected to the phase connections (4a, 4b, 4c) of the inverter (3) and which is configured to detect output voltages of the inverter (3) to the phase connections (4a, 4b, 4c) and to determine a speed of the electrical machine (5) on the basis of the detected output voltages, and an actuating device (7) which is coupled to the evaluation device (6) and which is configured to switch to an idle state or an active short-circuit in dependence on the determined speed of the inverter (3).

Abstract: A high performance electric pulse motor without a collector, with an electronic control circuit, capable of performing either with direct current or with alternating current. The motor includes a magnetic circuit at its stator including a pair of stator polar pieces, an induction coil at each polar piece, and a rotor between the polar pieces. The rotor has at least a pair of radial extensions in opposition for each pair of polar pieces in the stator and, attached to the rotor's axis, means opaque to light having a window allowing free passage of light. The motor further includes a permanent light source and a photo resistor.

Abstract: A motor controlling device is provided. The device includes a position controller for generating a speed reference based on a positional reference and a motor position, a speed controller for generating a torque reference based on the speed reference and a motor speed, a motor drive for driving a motor based on the torque reference, the motor driving machinery to which an acceleration sensor is attached, an acceleration feedback signal generator for generating a feedback signal to the speed reference based on an acceleration detection signal that is a detection signal of the acceleration sensor, and a positional reference filter inputted with the positional reference and suppressible of low frequency vibration of the machinery.

Abstract: A drive control device is provided with a physical amount detection unit which detects the physical amount pertaining to the output of a motor, a rotational frequency determination unit for determining whether the rotational frequency of the motor is equal to or greater than a base rotational frequency, a threshold value selection unit for selecting a threshold value for the physical amount in accordance with the determination result of the rotational frequency determination unit, and a rotational frequency control unit for controlling the rotational frequency of a rotating shaft in accordance with the magnitude relationship between the detected physical amount and the selected threshold value.

Abstract: A device to make cellular phone, hand-held computer, lap-top computer, and electric/electronic wrist watch use mote free and convenient comprises a cellular phone, hand held computer, lap-top computer, and electric/electronic wrist watch (FIGS. 1,2,3,4) and an incorporated solar electric panel (10, 20, 30) for providing continuous input electric energy. Said incorporated solar electric panel, can be fixed (10), detached (20), or pivoting (30).

Abstract: A battery charger in a power supply apparatus is mechanically and electrically connectable to and disconnectable from a battery that is for supplying electric power to a power-assisted bicycle, and includes an AC outlet and a USB connecting terminal that are electrically connected with the other apparatus and supply the electric power from the battery to the other apparatus.

Abstract: A device for charging portable electronic devices via a motorcycle, said device comprising: (a) a connector for a portable electronic device; and (b) said connector electrically connected to a vehicle's battery.

Abstract: A universal charging dock for charging a mobile device includes a base portion defining an opening, a back support portion connected to the base portion, a connector housing within the opening, and a wall mount module. The base portion has grooved sidewalls adjacent a track within the opening, and the connector housing has a grooved track that locks into the track and allows lateral movement along the track. The grooved track further allows the connector housing to rotate within the opening. A male Connector, for connecting to a charging port of the mobile device, extends from the connector housing and may move vertically into or out of the connector housing to adjust an extension of the male connector. The universal charging dock may also be placed on either side, to achieve portrait or landscape orientations.

Abstract: A charging device includes a power converting unit and a power output unit. The power converting unit comprises a first conductive pin, a second conductive pin, and a converter. The first conductive pin and the second conductive pin are electrically connected to an alternating current (AC) power. The converter converts the AC power to a direct current (DC) power and outputs the DC power. The power output unit is electrically connected to the converter via a number of cables, and outputs the DC power to an electronic device. The power output unit comprises a first switch and a second switch. When the electronic device separates from the power output unit, the first switch controls the converter to stop receiving the AC power. When the electronic device is completely charged, the second switch controls the converter to stop receiving the AC power.

Abstract: A handheld medical device that simultaneously charges its re-chargeable battery and measures one or more characteristics of a bodily fluid is taught. The handheld medical device includes a re-chargeable battery, a wireless power receiver, a battery charging module, and a measurement module. The re-chargeable battery is electrically connected to provide power to components of the handheld medical device. The wireless power receiver outputs power received wirelessly, via an antenna, from a wireless power transmitter that is external to the handheld medical device. The battery charging module selectively charges the re-chargeable battery based on the power received wirelessly from the wireless power transmitter. While the handheld medical device is not connected by wire to any other device, the measurement module measures a characteristic of a sample of a bodily fluid simultaneously with the battery charging module charging the re-chargeable battery.

Abstract: A wireless charger is disclosed. The charger contains a coil with a plurality of taps, thereby facilitating charging according to different frequencies and standards. Detection of the standard appropriate to a particular receiver may be accomplished by modulation of the power carrier or via low power modalities, including NFC or Bluetooth.

Abstract: There is provided a system and method for a kinetically chargeable stylus device for use with an interactive device. The method comprises charging the kinetically chargeable stylus device using one of a first mode and a second mode, wherein the first mode includes receiving a movement of a magnet in relation to an inductor, inducing a first electrical current in the inductor from the movement, and charging an energy storage unit using the first electrical current, and wherein the second mode includes inducing a second electrical current in the inductor from a non-kinetic source, and charging the energy storage unit using the second electrical current. Prior to inducing the second electrical current in the inductor, the magnet may be isolated from the inductor. Further, a movement of the stylus device may be detected using the inductor and the magnet.

Abstract: This disclosure is directed to power delivery including out-of-band communication. In general, a device to be charged and a charging device may interact using two separate wireless signals. A first wireless signal (e.g., a radio frequency (RF) signal) may be employed to charge the device. A second wireless signal of a different type (e.g., an infrared (IR) signal) may be employed for inter-device communication. An example device may comprise a power module to receive a first wireless signal, a transmitter to transmit a second wireless signal, and a charging control module. The first wireless signal may be for conveying power from a charging device to the device, the second wireless signal may be for transmitting information from the device to the charging device, and the charging control module may be to cause the transmitter to transmit the second wireless signal based on an indication received from the power module.

Abstract: A mobile terminal comprises a terminal body having a battery; a contact unit formed at one side of the terminal body, and to which an adaptor is coupled; and a plurality of conductive lines configured to connect the contact unit with the battery such that the battery is charged, wherein one of the plurality of conductive lines is formed to pass through a first charging unit for charging the battery by wirelessly receiving power from a wireless power transmitter.

Abstract: A wireless transmitting device for wireless charging includes a main body, a first encapsulated transmission coil and a second encapsulated transmission coil. The first encapsulated transmission coil and the second encapsulated transmission coil are disposed in the main body, and the second encapsulated transmission coil is adjacent to the first encapsulated transmission coil. Each of the first encapsulated transmission coil and the second encapsulated transmission coil has a quadrangular winding configuration so that the magnetic flux generated at the short-side section of the first or second encapsulated transmission coil is greater than the magnetic flux generated by an encapsulated transmission coil having a circular winding configuration. Therefore, the wireless charging range of the wireless transmitting device for wireless charging is improved.

Abstract: In a method for detecting an electrically conductive foreign body at a device for inductively transmitting electrical energy from a stationary unit having an electrical power supply unit and a primary inductor to a mobile unit having a secondary inductor and an electric load, electrical power is initially fed from the electrical power supply unit into the primary inductor and the feed-in is interrupted. The curve over time of the resulting decay of an electrical operating variable of the primary inductor is measured and at least one parameter of the measured curve is compared with a corresponding parameter of a reference curve in the event of an interruption of the power feed-in into the primary inductor without the presence of an electrically conductive foreign body. The comparison is used to determine whether an electrically conductive foreign body is present in the region of the magnetic field produced by the primary inductor.

Abstract: A soft magnetic layer for a receiving antenna of a wireless power receiving apparatus includes a first soft magnetic member containing a Mn—Zn ferrite material, and a second soft magnetic member containing a Ni—Zn ferrite material. Accordingly, electromagnetic energy collecting performance of the receiving antenna of the wireless power receiving apparatus is improved, and thereby power transmission efficiency is maximized.

Abstract: A wireless power transmitter includes a body having a coil module therein, and configured to transmit power in a wireless manner, a blowing module configured to cool the coil module by moving a fluid by convection and a guide module extending from the blowing module to outside of the body such that the fluid from the blowing module is discharged to outside of the body after cooling the coil module. The coil module has a shape corresponding to an outer circumference of the coil module partially or wholly.

Abstract: Systems, methods, and devices for refueling a vehicle are discussed herein. According to one embodiment, a vehicle charging station includes a power distribution interface, a receiver component, and an authorization component. The power distribution interface is configured to electrically couple with and provide electrical power to a power receiving interface of a vehicle. The power distribution interface includes a power cable extending from the vehicle charging station and the power cable includes an outlet plug. The receiver component is configured to receive identification information that uniquely identifies the vehicle from an identification component of the vehicle. The receiver component is configured to communicate with the identification component to allow electrical communication between the identification component and the receiver component when the power receiving interface is electrically coupled to the power distribution interface.

Abstract: An electric power charge and discharge system for an electronic device having a battery, by which the electronic device can be used for a long period of time. In a wireless communication device including a wireless driving portion including a first battery and a wireless charging portion including a second battery, the first battery is charged by electric power from a fixed power supply and the second battery is charged by using electromagnetic waves existing in an external space. Further, the first battery and the second battery are discharged alternately, and during a period in which the first battery is discharged, the second battery is charged.

Abstract: A power storage device mounted on an electric powered vehicle is configured to include a plurality of battery units. A charger outputs onto power lines the charging power for charging the power storage device by a power supply external to the vehicle. A plurality of relays switch the electrical connection between the power lines and the plurality of battery units. A control device controls the plurality of relays to reduce the number of battery units that are the subject of charging when the current leakage value during overall charging of the plurality of battery units is high.

Abstract: An electric automobile charging system wherein a center device, an electric automobile, and a charging device that charges a storage battery section in said electric automobile are connected by power lines. The center device acquires information of the amount of power generated and the amount of power used, decides on cutoff of the charging current or reduction of current to the storage battery section in the electric automobile, based on the acquired information, and communicates instructions for the cutoff of the charging current or current reduction that has been decided. The charging device receives the instructions from the center device and interrupts the charging current to the storage battery section in the electric automobile or reduces the current, based on the received instructions.

Abstract: A charging system includes central server capable of communicating with electric vehicles, and charging stations. Central server receives travel information on the electric vehicles and remaining charge information on rechargeable batteries from the electric vehicles, forecasts demanded power in a predetermined area, and issues a charge schedule change request to charge control devices included in the predetermined area. Charging stations change charge schedules for the rechargeable batteries mounted on the electric vehicles in accordance with the charge schedule change request.