34th week of 2013 patent applcation highlights part 20 |
Patent application number | Title | Published |
20130214665 | Lamp Apparatus and Luminaire - A lamp apparatus includes an apparatus body including a housing having a cap at one end side, and thermal conducting fins provided on an inner surface of the housing so as to extend from the one end side along the other end side thereof and project inward of the housing, a thermal radiation plate attached to the other end side of the housing in a state in which one surface side is in contact with the thermal conducting fins, a light-emitting body attached to the other surface side of the thermal radiation plate, and a lighting circuit disposed in the housing and configured to light the light-emitting body. | 2013-08-22 |
20130214666 | SOLID STATE LAMP WITH LIGHT DIRECTING OPTICS AND DIFFUSER - Lamps and bulbs are disclosed generally comprising different combinations and arrangements of a light source, a reflective optical element, and a separate diffusing layer. This arrangement allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of an arrangement of LEDs. The lamps according to the present invention can also comprise thermal management features that provide for efficient dissipation of heat from the LEDs, which in turn allows the LEDs to operate at lower temperatures. The lamps can also comprise optical elements to help change the emission pattern from the generally directional pattern of the LEDs to a more omni-directional pattern. | 2013-08-22 |
20130214667 | Lighting Apparatus - According to an exemplary embodiment, a lighting apparatus includes a light source that includes a light emitting element, and a member which is irradiated with light emitted from the light source and which is formed of resin having absorptivity of 15% or less in a wavelength in which intensity is 10% of a peak intensity, at a wavelength side that is shorter than an intensity peak of a spectrum of blue light emitted from the light source. | 2013-08-22 |
20130214668 | SPARK PLUG FOR INTERNAL COMBUSTION ENGINE - The spark plug for an internal combustion engine has a cylindrical housing, a center electrode held inside the housing, a ground electrode connected to the housing and forming a spark discharge gap between itself and the center electrode, and, an end projection projected from the end portion of the housing toward the head end side of the spark plug. The center electrode and ground electrode are arranged so that most of the spark discharge gap is disposed over the open areas and the electrode area in which the end projection is arranged. | 2013-08-22 |
20130214669 | SPARK PLUG - A spark plug includes a tubular metal shell extending in an axial direction, wherein the metal shell includes: an externally threaded portion formed on a tip end side of an outer periphery of the metal shell; a seat portion formed on a rear end side of the externally threaded portion in the axial direction and protruding radially outward; and a nickel layer provided on an outer surface of the metal shell, wherein the nickel layer contains phosphorus, and a phosphorus concentration in a portion in which a nickel concentration is 50 at % in a thickness direction of the nickel layer itself is 6 at % or more and 20 at % or less. | 2013-08-22 |
20130214670 | SPARK PLUG - A spark plug ( | 2013-08-22 |
20130214671 | SPARK PLUG - A spark plug has a metal shell and a ground electrode joined at a base end portion thereof to the metal shell and includes a surface layer and a core higher in thermal conductivity than the surface layer. The surface layer has a thickness of 0.2 to 0.4 mm at a specific position that is located 1 mm from the base end portion. The spark plug satisfies the following condition: W | 2013-08-22 |
20130214672 | FOULING RESISTANT SPARK PLUG - An insulator for a spark plug is provided having an insulator tip. The insulator tip includes a feature extending radially inward from an exterior surface of the insulator tip. | 2013-08-22 |
20130214673 | BOROPHOSPHATE PHOSPHOR AND LIGHT SOURCE - This invention is related to efficient inorganic borophosphate phosphors which can applied in various technical applications such as fluorescent lamps, colored light or white light emitting diodes, and other devices where phosphors are used to convert especially near UV radiation into the visible light. Further, this invention is related to light sources comprising the efficient borophosphate phosphor. The inventive phosphor absorbs radiation in a first wavelength range of the electromagnetic spectrum and emits radiation in a second wavelength range of the electromagnetic spectrum. This phosphor is a borophosphate activated with divalent rare earth metal ions. | 2013-08-22 |
20130214674 | LIGHT-EMITTING APPARATUS PACKAGE, LIGHT-EMITTING APPARATUS, BACKLIGHT APPARATUS, AND DISPLAY APPARATUS - A light-emitting apparatus package of the present invention includes (i) an electrically insulated ceramic substrate, (ii) a first concave section formed in the direction of thickness of the ceramic substrate so as to form a light exit aperture in a surface of the ceramic substrate, (iii) a second concave section formed within the first concave section in the further direction of thickness of the ceramic substrate so that one or more light-emitting devices are provided therein, (iv) a wiring pattern for supplying electricity, which is provided in the first concave section, and (v) a metalized layer having light-reflectivity, which is (a) provided between the light-emitting device and the surface of the second concave section of the substrate, and (b) electrically insulated from the wiring pattern. On the account of this, the light-emitting apparatus package in which heat is excellently discharged and light is efficiently utilized and a light-emitting apparatus in which the light-emitting apparatus package is used can be obtained. | 2013-08-22 |
20130214675 | ALLOY POWDER FOR AW MATERIAL OF INORGANIC FUNCTIONAL MATERIAL AND PHOSPHOR - The present invention relates to a phosphor comprising a nitride or an oxynitride, comprising an X-ray powder diffraction pattern comprising at least one Region having at least one peak with an intensity ratio I of 8% or less, the X-ray powder diffraction pattern measured in the 2θ range from 10° to 60° using a CuKα line (1.54184 {acute over (Å)}), wherein the Region is the 2θ range from 41.5° to 47°, the intensity of each peak is a value obtained after background correction, and the intensity ratio I is defined by the formula (I | 2013-08-22 |
20130214676 | SOLID-STATE LAMPS WITH IMPROVED EMISSION EFFICIENCY AND PHOTOLUMINESCENCE WAVELENGTH CONVERSION COMPONENTS THEREFOR - A solid-state lamp comprising: an array of solid-state excitation sources and a photoluminescence wavelength conversion component comprising a layer of photoluminescence material and a coupling optic. The layer of photoluminescence material is remote to the excitation sources and the coupling optic is disposed between the excitation sources and the layer of photoluminescence material. The ratio of the photoluminescence material surface area of the layer of the photoluminescence material to the excitation source surface area for the array of solid-state excitation sources is at least 3 to 1. | 2013-08-22 |
20130214677 | Nearly Index-Matched Luminescent Glass-Phosphor Composites For Photonic Applications - A light emitting device is described. The light emitting device includes a base; a light emitting diode supported by the base; a first layer spaced apart from the light emitting diode and including a light emitting material, the first layer having a refractive index n | 2013-08-22 |
20130214678 | FLASHTUBE AND STROBE APPARATUS - A flashtube of the present invention includes a glass tube, an anode-side electrode disposed at one end of the glass tube, and a cathode-side electrode disposed at the other end of the glass tube. The glass tube includes a first glass tube, and second glass tubes coupled to respective ends of the first glass tube via stage joint glass tubes. Each of the stage joint glass tube has a thermal expansion coefficient between the thermal expansion coefficient of the first glass tube and that of each of the second glass tube. A ratio of the outer diameter of the anode-side electrode to the inner diameter of the glass tube is 43.5% or higher. | 2013-08-22 |
20130214679 | PLASMA LIGHT SOURCE - A High Frequency light source ( | 2013-08-22 |
20130214680 | Plasma Supply Device - A plasma supply device generates an output power greater than 500 W at an essentially constant basic frequency greater than 3 MHz and powers a plasma process to which is supplied the generated output power, and from which reflected power is returned to the plasma supply device. The plasma supply device includes at least one inverter connected to a DC power supply, which inverter has at least one switching element, and an output network, wherein the at least one output network includes at least one inductance that has at least one magnetic field strengthening element that is a Perminvar ferrite. | 2013-08-22 |
20130214681 | METHOD FOR OPERATING A GAS DISCHARGE LAMP OF A MOTOR VEHICLE HEADLAMP - A method for operating a gas-discharge lamp ( | 2013-08-22 |
20130214682 | FREQUENCY ENHANCED IMPEDANCE DEPENDENT POWER CONTROL FOR MULTI-FREQUENCY RF PULSING - Methods for processing a substrate in a plasma processing, chamber employing a plurality of RF power supplies. The method includes pulsing at a first pulsing frequency a first RF power supply to deliver a first RF signal between a high power state and a low power state. The method further includes switching the RF frequency of a second RF signal output by a second RF power supply between a first predefined RF frequency and a second RF frequency responsive to values of a measurable chamber parameter. The first RF frequency and the second RF frequencies and the thresholds for switching were learned in advance during a learning phase while the first RF signal pulses between the high power state and low power state at a second RF frequency lower than the first RF frequency and while the second RF power supply operates in different modes. | 2013-08-22 |
20130214683 | Impedance-Based Adjustment of Power and Frequency - Systems and methods for impedance-based adjustment of power and frequency are described. A system includes a plasma chamber for containing plasma. The plasma chamber includes an electrode. The system includes a driver and amplifier coupled to the plasma chamber for providing a radio frequency (RF) signal to the electrode. The driver and amplifier is coupled to the plasma chamber via a transmission line. The system further includes a selector coupled to the driver and amplifier, a first auto frequency control (AFC) coupled to the selector, and a second AFC coupled to the selector. The selector is configured to select the first AFC or the second AFC based on values of current and voltage sensed on the transmission line. | 2013-08-22 |
20130214684 | METHOD AND DEVICE FOR TRANSPORTING VACUUM ARC PLASMA - The proposed method allows forming cathode arc plasma flows for high quality coatings. The plasma flows are transported in a plasma-optical system by means of a transport magnetic field generated by electromagnetic coils, super-positioning a constant magnetic field and additional variable magnetic fields deflecting the plasma flows from internal surfaces of the system's elements. In a device for implementing the proposed method, an arc power supply is connected to an anode via a coil, surrounding the anode. In a linear embodiment of the system, an electrically conductive tube section inside the anode is connected to one end of the deflection coil. The other end is connected to the positive terminal of power supply. In the system's non-linear embodiment, additional magnetic fields are established using two additional electromagnetic coils, surrounding the anode and a nonlinear part respectively. The method and device allow for a significantly reduction of losses of macroparticle-free plasma. | 2013-08-22 |
20130214685 | LIGHT EMITTING DIODE REPLACEMENT LAMP - Thermal management and control techniques for light emitting diode and other incandescent replacement light technologies using a current controller are disclosed. | 2013-08-22 |
20130214686 | MONITORING DEVICE FOR MONITORING BRIGHTNESS OF DISPLAY - A monitoring device includes a sensing element, a first switch element, a second switch element, and a warning unit. Brightness of a screen on a display unit is sensed by the sensing element. When the brightness of the screen on the display unit is not greater than a predetermined brightness, the first switch element will be turned on to turn on the second switch element so that the warning unit can be activated. Therefore, the display state of the screen can be monitored automatically. | 2013-08-22 |
20130214687 | LIGHTING AND CONTROL SYSTEMS AND METHODS - Lighting and control systems and methods for a lighting node and a remote control device are disclosed. The remote control device may be coupled to the lighting node via an identification process, such as broadcasting an identification request from the remote control device to nearby lighting nodes. The lighting node can respond to the identification request by sending an identifier to the remote control device such that future commands sent from the remote control device is limited to be responded by the lighting node having the identifier stored thereon. Once coupled, the remote control device can adjust spectral content produced by the lighting node based on user-configuration or a color profile captured via an optical sensor. The adjustment via the remote control device may further include calibration and recalibration of the lighting node utilizing a feedback mechanism with the optical sensor. | 2013-08-22 |
20130214688 | Direction Active Projection - A directionally active projection device is described that includes a planar display providing a pattern of information. The planar display includes regions of light transparency and regions for blocking light transmittance. The directionally active projection device also includes a lens arranged adjacent to the planar display, and a collection of light sources arranged as an array in a focal plane of the lens. Also described are methods of controlling directionally active projection devices. | 2013-08-22 |
20130214689 | PLASMA IGNITION DEVICE AND PLASMA IGNITION METHOD - A technique of improving the life of a spark plug which generates spark discharge and AC plasma. A plasma ignition device includes a power control section which reduces AC power P after generation of AC plasma in an AC power supply period Sa during which the AC power P is continuously supplied to a spark plug within a maintainable power range Rp within which the AC plasma can be maintained. | 2013-08-22 |
20130214690 | High Efficiency LED Power Supply - There is an increasing need for simple and low cost power supplies to control loads such as battery chargers and LEDs. It is the object of this invention to provide an alternative method for the control of current in such loads with very high efficiency and to reduce the variation of load current with supply voltage. This invention is particularly relevant to LED power supplies or battery chargers and provides an electronic power supply for the control of an electrical load connected to an electrical source, the electrical load comprising a main load with at least one LED and an auxiliary load with at least one LED, the electronic power supply comprising a series compensation block connected in series with the main load and the voltage source, the series compensation block providing a voltage in opposition to the voltage source by directly controlling the power delivered to the auxiliary load and indirectly controlling the power converted in the main load. | 2013-08-22 |
20130214691 | Encapsulated light-emitting diode lamp - An overmolded light-emitting diode (LED) lamp for a decorative light string. The lamp includes a light-emitting diode, a first lead electrically connected to the light-emitting diode at a top portion of the first lead, a second lead electrically connected to the first lead through the LED, a lens encapsulating the light-emitting diode, a top portion of the first lead, and a top portion of the second lead, and a housing having a solid uniform body encapsulating a bottom portion of the lens, a portion of the first lead, and a portion of the second lead, such that bottom portions of the first lead and the second lead extend outward and away from a bottom portion of the housing. | 2013-08-22 |
20130214692 | Method for transmitting control information from a control apparatus to an operating device for at least one light-emitting means and operating device for at least one light-emitting means - A method for transmitting control information from a control apparatus to an operating device for a light-emitting means may include a) modulating control information onto a supply line by means of the control apparatus during a modulation phase, wherein a switchable shunt of the device is connected between the first and second supply connections; b) decoding the control information in a decoder of the device; b1) activating the demodulation by the decoder when the absolute value for the voltage at the two supply connections falls below a first threshold value; and c) actuating a converter of the operating device in accordance with the decoded control information. | 2013-08-22 |
20130214693 | LIGHT EMITTING COMPONENT AND LIGHT EMITTING DEVICE USING SAME - A light emitting device including a light emitting component is provided, wherein said light emitting comprising an integrated light emitting diode and a semiconductor field effect transistor. The semiconductor field effect transistor may prevent situations such as overheating and voltage instability by controlling a current passing through the light emitting diode as well as enhancing the ability to withstand electrostatic discharge and reducing cost of the light emitting device in multiple aspects. | 2013-08-22 |
20130214694 | METHOD AND CONTROL CIRCUIT FOR STARTING A GAS-DISCHARGE LAMP - A method operates a gas-discharge lamp ( | 2013-08-22 |
20130214695 | Dimming Driver With Stealer Switch - A dimming driver with stealer switch. | 2013-08-22 |
20130214696 | Light-Emitting Diode with Adjustable Light Beams and Method for Controlling the Same - A light-emitting diode with adjustable light beams and a method for controlling the same. The light-emitting diode includes a substrate, multiple dies on the substrate, a primary optical lens over the substrate, wherein a portion of the dies being designated as belonging to a first group of dies and another portion of the dies being designated as belonging to a second group of dies, the primary optical lens covers the dies, and a controlling unit selectively drives the first or the second group to emit light, wherein a light beam formed by light that is emitted by the first group and passes through the primary optical lens has a different shape or projection angle from a light beam formed by light that is emitted by the second group and passes through the primary optical lens. | 2013-08-22 |
20130214697 | POWER CONTROL SYSTEM FOR AN ILLUMINATION SYSTEM - A power control system for an illumination system has a power source to supply any one of a range of AC or DC voltages, a power conversion stage, one or more light emitting device(s) for illumination and/or wireless communication, a controller controlling an output stage to receive and send information to regulate the power and/or current to the light emitting device(s), and a programmable voltage clamping or linear regulator arrangement contained within the output stage that can be controlled to increase a dynamic dimming ratio of current and/or power through the light emitting device(s) and to enable power or current modulation for wireless optical communication of light emitting device(s). The power control system enables current and power to be provided to one or more attached light emitting device(s) with a vastly extended dynamic dimming range such that different light emitting devices can be powered using the same driver output stage(s). | 2013-08-22 |
20130214698 | Method and a User Interaction System for Controlling a Lighting System, a Portable Electronic Device and a Computer Program Product - The invention provides a user interaction system ( | 2013-08-22 |
20130214699 | Dual-Mode Dimming of a Light - Various methods and apparatus for controlling brightness of a light emitting apparatus include controlling a brightness of a light emitting device based on a brightness value, receiving a message over a network, and detecting a modulation of a power input of the light emitting apparatus. The brightness value is changed based on both the message and the modulation. | 2013-08-22 |
20130214700 | LED CONTROL SYSTEM - One embodiment includes a light-emitting diode (LED) control system. The system includes an LED driver system configured to regulate a control voltage based on a substantially constant reference current and a feedback voltage at a feedback node. The system also includes a digital current source system comprising a plurality of unit current sources that are each coupled to an LED. The plurality of unit current sources can be selectively activated to each provide a given unit current through the LED and to each provide the feedback voltage as an interpolative feedback to the feedback node based on the unit current. The system further includes a current magnitude controller configured to selectively activate the plurality of unit current sources in response to a current magnitude signal. | 2013-08-22 |
20130214701 | SYSTEMS AND METHODS FOR LUMINESCENT DISPLAY - A ruggedized luminescent display system for displaying electronic images or light from a surface of an object, such as a boardsport medium, helmet medium, or protective clothing medium, for visibility enhancement. According to various aspects of the present invention, the object may comprise a resilient transmissive material disposed within a cavity of the object and may have a surface that is configured to be substantially flush with an outer surface of the object. A light source may be disposed within the object and may emit light through the resilient transmissive material such that the light may be visible from the outer surface of the object. The light source may be electrically coupled to an integrated circuit board with a control system comprising a microcontroller that may control the emission of light from the light source in response to a signal. The microcontroller may receive the signal from a motion sensor that may be electrically coupled to the integrated circuit board and configured to detect the motion of the object. The luminescent display system may be configured to indicate at least one or more of location, distance, direction and/or speed. The luminescent display system may be configured to illuminate environmental surroundings. | 2013-08-22 |
20130214702 | POWER CONVERTER WITH COMPENSATION CIRCUIT FOR ADJUSTING OUTPUT CURRENT PROVIDED TO A CONSTANT LOAD - A method for use in a power converter includes generating a peak input voltage signal that is representative of a peak value of the input voltage for phase angles less than a phase angle threshold and is representative of a value that is less than the peak value of the input voltage for phase angles greater than the phase angle threshold. The method also includes controlling a switching of a switch to regulate an output current of the power converter in response to the peak input voltage signal and the feedback signal. A compensation current is then added to the peak input voltage signal when the phase angle is greater than the phase angle threshold to allow for natural dimming at an output of the power converter. | 2013-08-22 |
20130214703 | MULTIPLEXER CIRCUIT FOR DUAL THERMISTOR OPERATION USING A SINGLE LINE COUPLING - A time-multiplexed thermal sensing circuit is provided for control and sensing of two thermistors over a single line electrical coupling. The circuit may include a first diode that selectively couples or isolates a first thermistor from a sense node based on the polarity of an applied voltage to the sense node. The circuit may further include a second diode that selectively couples or isolates a second thermistor from the sense node based on the polarity of the applied voltage to the sense node such that only of the thermistors is coupled to the sense node at any time. | 2013-08-22 |
20130214704 | METHODS, LUMINAIRES AND SYSTEMS FOR MATCHING A COMPOSITE LIGHT SPECTRUM TO A TARGET LIGHT SPECTRUM - Methods, luminaires and systems for matching a composite light spectrum to a target light spectrum are disclosed. Method embodiments may be optimized for simultaneously maximizing luminous output with minimal chromaticity error. Method embodiments may further be optimized for simultaneously minimizing both chromaticity and spectral error. Embodiments of the present invention may be used with composite light sources having four or more distinct dominant colors within the visible spectrum. | 2013-08-22 |
20130214705 | Method for Limiting a Switch-on Current in an Electrical System - The disclosure describes a method for limiting a switch-on current in an electrical system which is supplied with power by a battery. During a switch-on process, an electrical load is connected to the electrical system and precharged by means of a precharging resistor. A monitoring unit regularly records operating data of at least one variable which influences a temperature of the precharging resistor and estimates the temperature of the precharging resistor on the basis of said operating data. The disclosure also describes an apparatus and a battery which are designed to execute the method according to the disclosure. | 2013-08-22 |
20130214706 | Apparatus and Method for Inductive Power Transfer on an Electrified Roadway Using a Rotating Secondary Inductor - The invention described herein provides an energy transfer system via a tire based inductor system. By using the tire, the area inside the tire, the tire rim, or the wheel as the inductive pick-up for a powered roadway system the prior art problems are solved. Namely, since the tire/wheel is always in contact, or near contact with the road, the air gap is reduced to a minimum, and substantially fixed, distance. By mounting the secondary on the perimeter of a wheel, relative motion between the road and inductor is minimized In addition, the pick-up can be encased in the tire, eliminating the problem of road debris, snow and ice entirely. Also, some heating of the tire due to electrical losses may enhance traction and tread performance on snowy or wet roads. In all configurations, the vehicle's wheel suspension adjusts vertically adjusting for road imperfections and obstacles. | 2013-08-22 |
20130214707 | METHOD AND DEVICE FOR CONTROLLING AN ELECTRIC MACHINE - In a method for predefining a generator-based braking power of an electric machine in a vehicle, a motor-based propulsion power is predefined as a function of the position of a first final control element, e.g., an accelerator pedal, and the generator-based braking power is predefined as a function of the position of the first final control element, the generator-based braking power assuming values which are unequal to zero, already at an actuated position of the first final control element. | 2013-08-22 |
20130214708 | POWER REGENERATION DEVICE AND POWER CONVERSION DEVICE - A power regeneration device according to an aspect of embodiments includes a voltage detecting unit, a signal processing unit, a phase detecting unit, and a power conversion unit. The signal processing unit generates, by using self-oscillation when the output of an AC detection signal from the voltage detecting unit is stopped due to a power outage, an AC signal whose frequency is the same as that of and whose phase is continued to that of the AC detection signal just before the stop. The phase detecting unit detects the phase of the AC power supply on the basis of the AC signal from the signal processing unit when power is recovered from the power outage. | 2013-08-22 |
20130214709 | AC MOTOR CONTROL APPARATUS - A motor control circuit calculates an α-axis current iα and a β-axis current iβ in a fixed coordinate system based on a W-phase (sensor phase) of an AC motor. The control circuit calculates the α-axis current iα from a current iw.sns sensed in the W-phase, and the β-axis current iβ from a differentiated value Δiα determined from the variation quantity of the α-axis current based on that the α-axis current iα and the β-axis current iβ are in a relation of a sine wave and a cosine wave. Subsequently, the control circuit calculates a current phase xθ=tan | 2013-08-22 |
20130214710 | AC MOTOR CONTROL APPARATUS - A motor control circuit calculates an α-axis current iα and a β-axis current iβ in a fixed coordinate system based on a W-phase (sensor phase) of an AC motor. The control circuit calculates, at each switching time point and each intermediate time point, the α-axis current iα from a current iw.sns sensed in the W-phase, and the β-axis current iβ from a differentiated value Δiα determined from the variation quantity of the α-axis current between every two successive switching time points or intermediate time points. Subsequently, the control circuit calculates a current phase xθ=tan | 2013-08-22 |
20130214711 | AC MOTOR CONTROL APPARATUS - A motor control circuit calculates, based on a sensed current of a sensor phase sensed by a current sensor, an estimated current of the other phase and calculates a d-axis and a q-axis estimated currents based on the sensed current of the sensor phase and the estimated current of the other phase. The motor control circuit further calculates a d-axis and a q-axis command voltages based on the estimated currents thereby to control power supply to the AC motor. When the sensed current of the sensor phase is 0 [A], the command voltages are fixed and the estimated current is interpolated. Thus, variations of the command voltages caused by an error in the estimated current are reduced and a rapid change in the estimated current is reduced. | 2013-08-22 |
20130214712 | AC MOTOR CONTROL APPARATUS - A reference current phase sensing part of a sensor phase (W) calculates an α-axis current iα and a β-axis current iβ in a fixed coordinate system formed with respect to a sensor phase as a base. The α-axis current iα is calculated based on a sensed current iw.sns of the sensor phase and a β-axis current iβ is calculated based on command currents iu* and iv* of the other two phases (U, V) determined from a d-axis command current id* and a q-axis command current iq*. Then a current phase xθ=tan | 2013-08-22 |
20130214713 | CONTROLLER FOR AC MOTOR - A controller for a three-phase AC motor includes a current sensor and a current estimation section. The current sensor detects current flowing through one phase of the motor. The one phase is defined as a sensor phase. The current estimation section calculates a current phase relative to an axis of the sensor phase based on α-axis current and β-axis current in a stationary coordinate system defined by a α-axis parallel to the sensor phase axis and a β-phase perpendicular to the sensor phase axis. The current estimation section estimates current flowing through another phase of the motor based on the current phase and the detected current. The current estimation section calculates the α-axis current based on the detected current. The current estimation section calculates the β-axis current based on the detected current and a command value for the current flowing through the other phase of the motor. | 2013-08-22 |
20130214714 | METHOD AND DEVICE FOR CONTROLLING A SYNCHRONOUS MACHINE - In a method for controlling a synchronous machine having a stator, a rotor, and magnets situated on the rotor, first a nominal value is set for the magnetic flux prevailing in the synchronous machine, and a marker is set in a control unit that indicates that no calibration has yet been carried out. It is then checked repeatedly whether the synchronous machine has been out of operation for at least a specified time duration. If this is the case, a temperature balance between the stator and the rotor is assumed, so that the temperature to be measured at the stator is equal to the rotor temperature, and thus can be used as a basis for a calibration of the magnetic flux. A marker that indicates the carrying out of a flux calibration is set in the control unit. Subsequently, normal operation can be continued. | 2013-08-22 |
20130214715 | CIRCUIT FOR FILTERING NARROW PULSE AND COMPENSATING WIDE PULSE, AND MOTOR CONTROLLER COMPRISING THE CIRCUIT - A circuit for filtering narrow pulse and compensating wide pulse, including a signal shaping circuit, a filter circuit, and a pulse width compensating circuit. The signal shaping circuit processes an input signal and transmits the input signal to the filter circuit. The filter circuit filters off narrow pulses of the input signal. The pulse width compensating circuit compensates the wide pulses of the input signal and outputs an output signal. | 2013-08-22 |
20130214716 | PORTABLE APPLIANCE MOTOR CONTROL WITH SPEED-BASED CURRENT LIMITATION - A method of controlling a portable appliance includes measuring an input current supplied to a motor of the portable appliance and measuring a rotational speed of a shaft of the motor. The method also includes determining a current limit based on the rotational speed of the shaft using a substantially continuous function which relates a domain of rotational speeds to a range of current limits. The method further includes reducing, when the input current exceeds the current limit, the rotational speed of the shaft incrementally along the substantially continuous function until the input current is approximately equal to the current limit. | 2013-08-22 |
20130214717 | POWER CONVERSION APPARATUS - A resonance suppression control block includes a high-pass filter for extracting an AC component of DC link voltage, and a gain section for outputting a correction signal obtained by multiplying the AC component by a gain. A control unit controls an inverter based on a signal obtained by adding the correction signal to the voltage instruction. Thus, a power conversion apparatus with a simple configuration can be obtained that can suppress resonance of a DC link section and omit extra work for performing adjustment again in accordance with a power supply frequency. | 2013-08-22 |
20130214718 | MOTOR CONTROL DEVICE - A motor control device includes a feedback filter that has filter characteristics that a frequency response gain is substantially one at frequencies equal to or lower than a filter cutoff frequency, a frequency response gain decreases with increase in frequency in a range from the filter cutoff frequency ωfL to a filter upper limit frequency ωfH higher than the filter cutoff frequency ωfL, and a frequency response gain is substantially constant at frequencies equal to or higher than the filter upper limit frequency ωfH, and performs computing to apply the filter characteristics to a feedback transfer function, wherein a control-constant set unit sets a speed gain Kv and at least one of the filter cutoff frequency ωfL and the filter upper limit frequency ωfH to reduce a ratio of the filter upper limit frequency ωfH to the filter cutoff frequency ωfL with increase in the speed gain Kv. | 2013-08-22 |
20130214719 | Method and Device for Starting Motors in Weak Grids - Method and device for starting a motor ( | 2013-08-22 |
20130214720 | Hard Start Kit for Multiple Replacement Applications - A hard start capacitor replacement unit has a plurality of capacitors in a container sized to fit in existing hard start capacitor space. The capacitors are 4 metallized film capacitors wound in a single cylindrical capacitive element. The container has a common terminal and capacitors value terminals for the plurality of capacitors, which may be connected singly or in combination to provide a selected capacitance. An electronic or other relay connects the selected capacitance in parallel with a motor run capacitor. The hard start capacitor replacement unit is thereby adapted to replace a wide variety of hard start capacitors. | 2013-08-22 |
20130214721 | PORTABLE ELECTRONIC DEVICE COMPRISING SOLAR POWERED FUNCTION - A portable electronic device includes a battery, a normal charge module, a solar powered module, and a switch. The normal charge module charges the battery from a commercial power source. The solar powered module includes a solar panel and a voltage converting circuit, the solar panel converts light into electricity outputs a voltage of the electricity to the voltage converting circuit, the voltage converting circuit converts the voltage output from the solar panel into a charging voltage, and rectifies and filters the charging voltage which is then output to the battery, to charge the battery. The switch selectively connects the battery either to the normal charge module or to the solar powered module. | 2013-08-22 |
20130214722 | Power Charging System - Power charging system using sun energy or AC source suitable for wide range of applications such as charging electric vehicle battery or battery pack and/or supplying electricity for commercial, industrial and/or residential customers; the system comprises wide variety of relay and other components to manipulate the charging states. The system's circuits include a battery charging circuit, a control circuit and a reset control circuit for a relay requires redirected polarity of the control element(s) to change the closed state/position to open state/position to charge the power storage. The power charging system also including a battery charging circuit and a control circuit to which a relay is required unidirectional pulse input; there is no need to redirect polarities of the positive terminal of the control element to change the closed state/position to open state/position to charge the power storage. | 2013-08-22 |
20130214723 | System for Collecting Stray Energy - A converter system for generating electrical signal from an optical signal utilizes a collector for collecting an energy source as an optical signal. The collected optical signal is transmitted to a receiver which is associated with a converter for converting the optical signal to an electric signal. In one embodiment the converter system is incorporated in an electric motor of the type having a housing, a rotating shaft mounted in the housing, a commutator on the shaft, and a pair of permanent magnets, whereby the shaft is rotated in response to electrical power being applied to the commutator. The system includes an optical collector mounted in the housing in non-interfering relationship with the commutator and the shaft, whereby the optical collector is adapted for generating an optical signal from the stray energy in the motor housing when power is applied to the motor and the shaft is rotating. The optical signal thus generated is transmitted to the receiver. | 2013-08-22 |
20130214724 | ACTIVE BATTERY BALANCING CIRCUIT AND METHOD OF BALANCING AN ELECTRIC CHARGE IN A PLURALITY OF CELLS OF A BATTERY - A method and an active battery balancing circuit for balancing an electric charge in a plurality of cells of a battery that are electrically connected in series is disclosed. A first subset of the cells of the battery is electrically connected to an inductance for providing a current flow from the first subset through the inductance. The first subset of the cells is disconnected from the inductance, and a current is allowed to flow from the inductance into a second subset of the cells of the battery. At least one of the first and the second subset of the cells of the battery comprises two or more cells. | 2013-08-22 |
20130214725 | SUPER CHARGER - A charging device, for charging a rechargeable device, which comprises a power converter stage, adapted to convert power from a power source to charge the rechargeable device when the rechargeable device is connected to the charging device, and an energy bank, adapted for fast charging of the rechargeable device. The charging by the energy bank is independent but simultaneous to the charging of the rechargeable device by the power converter stage. | 2013-08-22 |
20130214726 | CONTROL METHOD FOR CLEANING ROBOTS - An embodiment of the invention provides a cleaning robot including a light detector and a controller. The light detector detects a light beam. The controller is coupled to the light detector to control the cleaning robot. When the controller determines that the light beam is being output by a charging station, the controller controls the cleaning robot to move to the charging station along a first boundary of the light beam, which is substantially perpendicular to the charging station. | 2013-08-22 |
20130214727 | CONTROL METHOD FOR CLEANING ROBOTS - An embodiment of the invention provides a charging station for a cleaning robot. The charging station includes an IR transmitter and a controller. The IR transmitter outputs a first IR light beam, wherein the IR light beam includes a second boundary and a first boundary which is substantially perpendicular or perpendicular to the charging station and the cleaning robot moves to the charging station along the first boundary. The controller controls the IR transmitter to output the first IR light beam or a second IR light beam. When the controller determines that the cleaning robot is near to the charging station, the controller controls the IR transmitter to output the second IR light beam. | 2013-08-22 |
20130214728 | METHOD AND APPARATUS FOR BATTERY DESULFATION - A method and apparatus for removing the sulfation from the plates of the battery and driving the sulfate crystals back into the electrolyte solution without overheating the battery is presented. The present invention includes a rotary magnetic hub and coil assembly to produces a unique output not found in other charging systems on the market. The battery desulfation method and apparatus of the present invention is self-adjusting to the battery, regardless of voltage and works by removing the sulfate crystals from the plates of lead acid batteries. As a result, the normal life of the average battery may be greatly extended. Heavily sulfated batteries may be brought back to working condition. When used for short durations for healthy batteries, the present invention keeps the sulfate crystals off the plates and in solution to extend the working life of the battery. | 2013-08-22 |
20130214729 | DEVICE FOR RECHARGING AN AUTOMOBILE BATTERY AND METHOD FOR MANAGING THE DEVICE - A rapid charging device for a battery includes a filtering stage of resistive-inductive-capacitive type to be connected to a three-phase network, a buck stage, a boost stage to be connected to the battery, an induction winding interposed between the buck stage and the boost stage, and a regulating unit capable of imposing chopping duty cycles on the buck stage and on the boost stage. The regulating unit compensates the phase shift induced by the filtering stage between the currents and the voltages taken from each phase of the three-phase network and also maintains the value of the current amplitude passing through the winding above a non-zero predefined threshold. | 2013-08-22 |
20130214730 | BATTERY CHARGER MANAGEMENT SYSTEM AND METHOD - A battery charger management system/method implementing indirect execution of battery charging profiles is disclosed. The system utilizes a power source control unit (PSCU) to selectively switch a power supply source to a battery charging power supply (BCPS) that charges a battery. A power monitor control unit (PMCU) monitors the current consumed by the BCPS and reports this to the PSCU. The BCPS current consumption provides the PSCU a profile of the charging characteristics of the battery attached to the BCPS, allowing identification of the battery type and a determination of the optimal charging profile for the battery in its current charge state. The power source to the BCPS is switched by the PCCU in accordance with the determined optimal charging profile to optimally charge the battery. The PSCU may operate independently or in conjunction with wireless commands received from a mobile communication device (MCD). | 2013-08-22 |
20130214731 | SELF-TUNING EXTERNAL DEVICE FOR WIRELESSLY RECHARGING IMPLANTABLE MEDICAL DEVICES - External device circuitry self-tunes so that current is being driven through a coil at a resonant frequency of the tank circuit including the coil. The self-tuning nature of the driver circuitry enables adaptation within a cycle to changes in the resonant frequency such as those due to changing loads on the coil from environmental factors. The self-tuning circuitry monitors the direction of current flow in the tank circuit so that during a non-driven phase of a two-phase cycle, the circuitry detects the current naturally changing directions and then activates the driver circuitry to drive current into the tank circuit in phase with the natural direction of current flow. Unity power factor is approximated while driving the coil despite changes in resonance. Power being driven into the tank circuit may then be measured at the approximation of unity power factor to control the amount of power being applied. | 2013-08-22 |
20130214732 | WIRELESS POWER AND DATA APPARATUS, SYSTEM AND METHOD - Wireless charging and data communication are effected. In accordance with various example embodiments, a transceiver-type circuit wirelessly charges portable devices, such as hand-held telephones via wireless signals, and also wirelessly communicates data with remote transponders. The data communication is carried out to facilitate authentication of the remote transponders and may, for example, be limited relative to a power-carrying capability of the transponders. Such aspects may be implemented, for example, in a transceiver for both transponder-based operation and (high-power) wireless charging applications in vehicle-based circuits. | 2013-08-22 |
20130214733 | BATTERY EQUALIZATION CIRCUITS FOR SERIES CHARGING/DISCHARGING AND CONTROLLING METHODS THEREOF - Battery equalization circuits for series charging/discharging and controlling methods thereof are provided. The provided circuit includes a set of series-connected batteries, a switching converter and a magnetic element coupled balance circuit including a magnetic element coupled to the switching converter, wherein the magnetic element takes a branch current from the switching converter to the series-connected batteries so as to cause the set of series-connected batteries to reach a balance. | 2013-08-22 |
20130214734 | APPARATUS AND METHOD FOR WIRELESS CHARGING - An apparatus and a method for wireless charging are disclosed. The method includes transmitting a wireless power supply apparatus search signal, receiving a wireless power supply apparatus search response signal and recognizing multiple apparatuses for wirelessly supplying power, sending a request for wirelessly supplying power to a first apparatus, sending a request for cooperative charging to a second apparatus, and receiving first and second power from the first and the second apparatuses, respectively, and performing wireless charging according to reception of a cooperative charging permission signal from the second apparatus for wirelessly supplying power. | 2013-08-22 |
20130214735 | WIRELESS CHARGING APPARATUS AND METHOD - A wireless charging apparatus and method are provided. The method includes transmitting a power supplying device search signal by a wireless power receiving device; recognizing a plurality of power supplying devices by receiving power supplying device search response signals; sending a power supply request to a first power supplying device among the plurality of power supplying devices; sending a power supply request to a second power supplying device upon receiving a charging rejection signal from the first power supplying device; and performing wireless charging by receiving power from the second power supplying device upon receiving a charging permission signal from the second power supplying device. | 2013-08-22 |
20130214736 | APPARATUS AND METHOD FOR HARVESTING POWER FROM AN OVERHEAD TRANSMISSION CONDUCTOR - An apparatus and method of harvesting power for charging batteries of a robot traversing an overhead transmission conductor is disclosed. The apparatus is adapted to harvest power from the overhead transmission conductor and provide a DC voltage for charging a battery and includes a first shield wire bonded to a structure that is grounded to the earth, a second shield wire isolated from the structure, and a charging station. The first shield wire, second shield wire, structure, and earth form a loop into which induced currents flow. The charging station is electrically connected to the second shield wire and adapted to convert induced currents flowing along the second shield wire into a DC voltage for charging a battery of the charging station. | 2013-08-22 |
20130214737 | DATA TRANSMISSION DEVICE AND METHOD BETWEEN CHARGER AND ELECTRIC VEHICLE - This disclosure provides a data transmission device used between a charger and an electric vehicle, including an internal interface compatible with messages or commands of a first protocol; an external interface compatible with messages or commands of a second protocol; an outside-to-inside transformation module, being adapted to receive messages or commands of the second protocol from the electric vehicle, to transform the messages or commands of the second protocol to messages or commands of the first protocol according to functions of data carried by the messages or commands, and to send the messages or commands of the first protocol to the charger; and an inside-to-outside transformation module, being adapted to receive messages or commands of the first protocol from the charger, to transform the messages or commands of the first protocol to messages or commands of the second protocol according to functions of data carried by the messages or commands, and to send the messages or commands of the second protocol to the electric vehicle; wherein the messages or commands sent from the outside-to-inside transformation module to the charger include: CER message, CSR message, CCS message and CCR message. | 2013-08-22 |
20130214738 | MULTI-STANDARD, ALTERNATING CURRENT OR DIRECT CURRENT COMPATIBLE ELECTRIC VEHICLE SUPPLY EQUIPMENT - A multi-standard compatible electric vehicle supply equipment includes a plurality of different electric vehicle connectors each of which corresponds to one of a plurality of different electric vehicle standards. A power converter inputs alternating current power and includes an output to output direct current power. A circuit is structured to selectively electrically connect a source of alternating current power to a number of the electric vehicle connectors, selectively electrically connect the output of the power converter to a selected one of the different electric vehicle connectors, employ a plurality of different communication protocols for the different electric vehicle connectors, detect connectivity of one of the different electric vehicle connectors with an electric vehicle and responsively select one of a plurality of different charging modes, and communicate with the electric vehicle through the selected one of the different electric vehicle connectors. | 2013-08-22 |
20130214739 | CHARGE TYPE BATTERY MANAGEMENT SYSTEM AND METHOD THEREOF - In a charge type battery management system and a method thereof, a monitoring unit is used to monitor a plurality of battery units, and if there is a change of electric potential, current and temperature of the battery units, a control unit controls a plurality of separate energy storage units, so that when the battery pack is charged, the overall electric energy of the system is used to increase the current and charge at least one of the battery units with a relatively low potential in order to equalize the overall electric potential of the battery pack, so as to enhance the energy conversion efficiency. | 2013-08-22 |
20130214740 | MULTI-SERIES BATTERY CONTROL SYSTEM - A multi-series battery control system comprises a plurality of unit battery cell of which unit consists of multiple battery cells connected in series; a plurality of control IC comprising a control circuit for controlling the unit battery cell; a main controller that sends and receives signal to/from the control ICs via an insulation; means for sending an abnormality signal, which represents the existence or the absence of abnormality of the control ICs or the battery cells, to the main controller from the control ICs, responding to the first signal outputted from the main controller via the insulation; and means for searching contents of the abnormality in the control ICs or the battery cells and sending the abnormality contents signal based on the search, to the main controller from the control ICs, responding to the second signal outputted from the main controller via the insulation. | 2013-08-22 |
20130214741 | DISCHARGE TYPE BATTERY MANAGEMENT SYSTEM AND METHOD THEREOF - In a discharge type battery management system and a method thereof, a monitoring unit is used to monitor a plurality of battery units, and if there is a change of electric potential, current and temperature of the battery units, a control unit controls a plurality of separate energy storage units, so that when the battery pack is charged, at least one of the battery units with a relatively high potential is discharged to equalize the overall electric potential of the battery pack, so as to enhance the energy conversion efficiency. | 2013-08-22 |
20130214742 | INCREASING EFFICIENCY OF WIRELESS POWER TRANSFER - Techniques are described herein that are capable of increasing efficiency of wireless power transfer. A wireless power transfer system includes features that allow the system to be deployed in public spaces such as airports or in commercial establishments such as restaurants or hotels to allow a user to recharge one or more portable electronic devices while away from home. To accommodate wireless recharging of a variety of device types and states, the system may receive parameters and/or state information associated with a portable electronic device to be recharged and may control the wireless power transfer in accordance with such parameters and/or state information. For instance, the system may increase efficiency of the wireless power transfer based on such parameters and/or state information. The system may also provide a secure and efficient means for obtaining required payment information from the user prior to the wireless power transfer, thereby facilitating fee-based recharging. | 2013-08-22 |
20130214743 | INCREASING EFFICIENCY OF WIRELESS POWER TRANSFER - Techniques are described herein that are capable of increasing efficiency of wireless power transfer. A wireless power transfer system includes features that allow the system to be deployed in public spaces such as airports or in commercial establishments such as restaurants or hotels to allow a user to recharge one or more portable electronic devices while away from home. To accommodate wireless recharging of a variety of device types and states, the system may receive parameters and/or state information associated with a portable electronic device to be recharged and may control the wireless power transfer in accordance with such parameters and/or state information. For instance, the system may increase efficiency of the wireless power transfer based on such parameters and/or state information. The system may also provide a secure and efficient means for obtaining required payment information from the user prior to the wireless power transfer, thereby facilitating fee-based recharging. | 2013-08-22 |
20130214744 | APPARATUS AND METHOD FOR DISPLAYING STRENGTH OF POWER AND EXPECTED CHARGE COMPLETION TIME DURING WIRELESS CHARGING - Provided is an apparatus and method for displaying a strength of power and an expected charge completion time during wireless charging. To this end, a first electronic device, upon receiving a power request message, converts stored or wirelessly supplied power into a wirelessly-transmittable form and transmits the converted power. A second electronic device, upon receiving a charging command, determines whether being located in a distance and a position which allow charging with the first electronic device, transmits the power request message to the first electronic device, receives the converted power from the first electronic device to measure the strength of the received power, and calculates an expected charge completion time by using the detected strength of power, if the second electronic device is located in the distance and position which allow charging. | 2013-08-22 |
20130214745 | DISCHARGE CIRCUIT FOR SMOOTHING CAPACITOR OF DC POWER SUPPLY - A discharge circuit for a DC power supply smoothing capacitor that is used in a power conversion device that supplies DC power via a switch to the DC power supply smoothing capacitor and an inverter, includes; a resistor that discharges charge in the capacitor; a switch connected in series with the resistor, that either passes or intercepts discharge current flowing from the capacitor to the resistor; a measurement circuit that measures a terminal voltage of the capacitor; and a control circuit that controls continuity and discontinuity of the switch; wherein the control circuit, after having made the switch continuous and starting discharge of the capacitor by the resistor, if a terminal voltage of the capacitor as measured by the measurement circuit exceeds a voltage decrease characteristic set in advance, makes the switch discontinuous and stops discharge by the resistor. | 2013-08-22 |
20130214746 | POWER MODULE AND AIR CONDITIONER - A power module is a power module having a PFC (power factor correction) function. The power module includes: IGBTs in a pair; first diodes in a pair connected to the IGBTs in a pair, the first diodes forming a reverse-conducting element; and second diodes in a pair connected to the IGBTs in a pair, the second diodes having a rectifying function. The power module further includes a driving IC that drives the IGBTs in a pair, and P terminals in a pair provided independently of each other. The P terminals are connected to one ends of the first diodes in a pair, respectively, the one ends being opposite to the other ends of the first diodes to which the IGBTs in a pair are connected. | 2013-08-22 |
20130214747 | VOLTAGE CONVERTING APPARATUS - A voltage converting apparatus is provided with: a reactor; a first switching element and a second switching element each of which is connected to the reactor in series; a first shunt resistor for detecting a first electric current flowing through the first switching element; a second shunt resistor for detecting a second electric current flowing through the second switching element; a current combining device for combining a detected value of the first electric current and a detected value of the second electric current to generate a combined current; and a detecting device for detecting a current value of the combined current in a plurality of different timings, thereby detecting a peak value and an average value of an electric current flowing through the reactor. | 2013-08-22 |
20130214748 | POWER DEVICE CONTROL CIRCUIT AND POWER DEVICE CIRCUIT - A power device control circuit enters a gate driving signal into a gate terminal of a power device. The power device control circuit includes: a control signal input circuit that receives a power device control signal for control of the power device; a driving system control circuit connected to the control signal input circuit; a driving circuit with a plurality of driving systems, the driving circuit driving the power device in response to a driving circuit control signal received from the driving system control circuit; and a timer circuit that makes switching between the driving systems in response to the driving circuit control signal after elapse of a given period of time from receipt of a predetermined signal, specifically the power device control signal, thereby changing the driving power of the driving system control circuit to drive the power device. | 2013-08-22 |
20130214749 | DC CONVERTER - A DC converter is provided for converting a first supply voltage into a second supply voltage. The first supply voltage is higher than the second supply voltage. The DC converter includes a driving stage and an output stage. The driving stage includes a modulation circuit, a pull-up driving unit, a pull-up unit, a pull-down driving unit, and a pull-down unit. The modulation circuit generates a control signal according to the second supply voltage. The pull-up driving unit generates a first P-type driving signal and a second P-type driving signal to the pull-up unit according to the control signal. The pull-down driving unit generates a first N-type driving signal and a second N-type driving signal to the pull-down unit according to the control signal. | 2013-08-22 |
20130214750 | Voltage Converter and Voltage Conversion Method - A voltage converter includes a first converter stage including a unipolar transistor coupled to a first inductive storage element, where the first converter stage is configured to provide a first output power signal including a first output current. Also, the voltage converter includes a second converter stage including a bipolar transistor coupled to a second inductive storage element, where the second converter stage is configured to provide a second output power including a second output current, and where a third output current is a sum of the first output current and the second output current. Additionally, the voltage converter includes a control circuit configured to control a power converter including the first output current and the second output current, where the first output current is higher than the second output current when the third output current has a first range of output current. | 2013-08-22 |
20130214751 | MULTIPHASE SWITCHING POWER SUPPLY CIRCUIT - There is provided a multiphase switching power supply circuit in which an input terminal receives an input voltage, an output terminal outputs an output voltage, first to an Nth power stages each include an inductor having one end connected to the output terminal; a high-side switch that connects another end of the inductor to the input terminal; and a low-side switch that connects the other end of the inductor to a reference voltage, a switch signal controller supplies first to an Nth control signals to the first to Nth power stages, the first to Nth control signals complementarily turning on and off their corresponding high-side switches and low-side switches at a frequency fs, and a switch signal controller determines phases of the first to Nth control signals according to a ration between inductance values of the inductors included in the first to Nth power stages. | 2013-08-22 |
20130214752 | Low-noise, high bandwidth quasi-resonant mode switching power supply - High bandwidth, low noise switching power supply operating in quasi-resonant mode for filtering switching harmonic noise, while providing a fast control bandwidth and power at high efficiency. The power supply has an LCL tank defining a resonance period T | 2013-08-22 |
20130214753 | CONTROL DEVICE, DIGITAL CONTROL POWER SUPPLY, AND CONTROL METHOD - In a digital control power supply, a mode control unit measures a first frequency and a second frequency for a difference between a second digital value and a target value. Based on the measured first frequency and second frequency and a predetermined threshold set to the first and second frequencies, the mode control unit determines whether an amplification factor for use in amplification processing by an amplifier is maintained at a current amplification factor or is changed to an amplification factor which is larger or smaller by 1 than the current amplification factor. This contributes to an improvement in noise resistance of the digital control power supply and prevents an output voltage from being unstable. | 2013-08-22 |
20130214754 | POWER SUPPLY DEVICE - A power supply device includes a power supply unit, a buck converter, a logic circuit, and a snubber circuit. The buck converter and the logic circuit are connected to the power supply unit. The buck converter is configured to convert a direct current voltage output from the power supply unit into a preset voltage supplied to an input terminal of an electronic device. The snubber circuit is electronically connected between the buck converter and the logic circuit. The power supply unit determines whether the buck converter is under a heavy load or light load. If the buck converter is under the heavy load, the power supply unit triggers the logic circuit to allow the snubber circuit to connect to ground through the logic circuit. If the buck converter is under the light load, the power supply unit triggers the logic circuit to allow the snubber circuit to disconnect from ground. | 2013-08-22 |
20130214755 | STABILIZATION SYSTEM AND METHOD FOR INPUT OSCILLATION - A system and method for controlling power supply input filter oscillations is provided. The method includes utilizing a converter power circuit to generate a positive input resistance to counteract input filter oscillations, which are generated in response to normal converter negative input impedance and current-mode control operation. A controller controls the converter power circuit to generate the positive resistance utilizing a first input corresponding to the voltage applied to the converter input. A second input disables the converter power circuit based on completion of output capacitor charge, the first and second inputs being different. | 2013-08-22 |
20130214756 | WIDE INPUT VOLTAGE RANGE POWER FACTOR CORRECTION CIRCUIT - A boost circuit is used for power factor correction (PFC). In a low power application, transition mode control is utilized. However, switching frequency varies with different input voltages, and over a wide input voltage range, the switching frequency can become too high to be practical. To address this issue, a boost circuit is provided whose effective inductance changes as a function of input voltage. By changing the inductance, control is exercised over switching frequency. | 2013-08-22 |
20130214757 | Bootstrap Circuitry for an IGBT - A bootstrap circuit provides a gate-emitter voltage to the high-side IGBT of a half-bridge IGBT arrangement. The bootstrap circuit includes a buck-boost circuit for providing a negative gate-emitter voltage for turning the high-side IGBT off. | 2013-08-22 |
20130214758 | STEP-DOWN DC-TO-DC CONVERTER - An inductor L | 2013-08-22 |
20130214759 | LONG-DISTANCE CONSTANT-VOLTAGE ELECTRICITY-FEEDING METHOD WITH WAKE-UP FUNCTION AND SYSTEM - Disclosed are a wired long-distance constant-voltage electricity-feeding method with a wake-up function and a system. A smart electricity supply module of a central electricity supply device generates a feed voltage from a central electricity source, and feeds the voltage to a terminal electricity source module through a feed line. Said smart electricity supply module can continuously provide electricity at a constant voltage to the terminal electricity source module and can change feed voltage polarity according to set rules when the terminal electricity module in sleep-mode must be remotely waken up. A voltage polarity monitoring module of said terminal electricity source module can determine, by monitoring the polarity of the voltage of the centrally fed electricity, whether to wake up the terminal electricity source module from sleep-mode to enter a normal electricity-supplying mode. The electrical feed circuit and the wake-up function are easy to implement, and provide a versatile power feed and high energy efficiency while reducing withstand-voltage process requirements. | 2013-08-22 |
20130214760 | MINIMAL POWER LATCH FOR SINGLE-SLOPE ADCs - A latch circuit that uses two interoperating latches. The latch circuit has the beneficial feature that it switches only a single time during a measurement that uses a stair step or ramp function as an input signal in an analog to digital converter. This feature minimizes the amount of power that is consumed in the latch and also minimizes the amount of high frequency noise that is generated by the latch. An application using a plurality of such latch circuits in a parallel decoding ADC for use in an image sensor is given as an example. | 2013-08-22 |
20130214761 | 3D-IC DIFFERENTIAL SENSING AND CHARGE SHARING SCHEME - The present invention discloses a | 2013-08-22 |
20130214762 | MEASUREMENT BRIDGE IN A PRINTED CIRCUIT BOARD - A measurement bridge, in particular for a network analyzer, including a reference port, a central output port and a balun having a first balun input connector and a first and a second balun output connector. The first balun output connector is connected to a first signal path and the second balun output connector is connected to a second signal path. The central output port is connected to the first signal path, and the reference port is connected to the second signal path. The electrical parameters of the first signal path and the second signal path are approximately the same. | 2013-08-22 |
20130214763 | POWER CONTROL DEVICE AND POWER CONTROL METHOD - Used electric energy is collected while maintaining accuracy. | 2013-08-22 |
20130214764 | Digital Multimeters Including A Remote Display - A digital multimeter includes a body having a function selector and a first coupler and includes a head having a display and a second coupler. The function selector selects a parameter to be measured, and the display displays a measurement corresponding to the parameter to be measured. The first and second couplers are engaged in a first arrangement joining the body and the head, and the first and second couplers are disengaged in a second arrangement separating the body and the head. | 2013-08-22 |