47th week of 2013 patent applcation highlights part 21 |
Patent application number | Title | Published |
20130307425 | CONSTANT CURRENT CONTROL BUCK CONVERTER WITHOUT CURRENT SENSE - A light emitting diode (LED) controller provides constant current regulation for a converter circuit providing current to an LED. The LED controller senses an inductor voltage and determines an inductor reset time from the sensed inductor voltage. Based on the determined inductor reset time, a switch on time and a switch period, the LED controller generates a control signal modifying the state of a switch coupling the converter circuit to an input voltage. | 2013-11-21 |
20130307426 | POWER SUPPLY AND METHOD FOR ELECTRIC LIGHTING DEVICE - Disclosed herein are a power control system ( | 2013-11-21 |
20130307427 | CURRENT BALANCING LED DRIVER CIRCUIT AND METHOD THEROF - A light emitting diode current-balancing driving circuit is provided. In accordance with the first aspect of the present invention, a light emitting diode current-balancing driving circuit is provided. The light emitting diode current-balancing driving circuit includes a plurality of rectifiers; a current-balancing circuit having a plurality of capacitors respectively coupled to the plurality of rectifiers; and a plurality of diodes electrically connected to the plurality of rectifiers respectively. | 2013-11-21 |
20130307428 | DRIVER DEVICE AND DRIVING METHOD FOR DRIVING A LOAD, IN PARTICULAR AN LED UNIT - The present invention relates to a driver device ( | 2013-11-21 |
20130307429 | MULTIPLE VOLTAGE BALLAST - A ballast and method for operating a ballast includes a switch or other circuit for connecting and disconnecting a voltage multiplier to a rectifier circuit. A control circuit for controlling the switch senses an input voltage and connects the voltage multiplier to the rectifier circuit when an input voltage falls below a selected voltage level. | 2013-11-21 |
20130307430 | CONTROL CIRCUIT FOR A PHASE-CUT DIMMER AND A METHOD OF CONTROLLING A PHASE-CUT DIMMER - A control circuit is disclosed for lighting applications having a load and an AC leading-edge phase-cut dimmer comprising a phase-cutting switch, the circuit comprising: a detection circuit for detecting a deadlock state of the dimmer; and an activation circuit configured to, in response to the detection circuit detecting a deadlock state of the dimmer, supply a DC current to the dimmer to exit the deadlock state by activating the dimmer. A method of operating such a control circuit is also disclosed. | 2013-11-21 |
20130307431 | SYSTEMS AND METHODS FOR DIMMING CONTROL USING SYSTEM CONTROLLERS - System and method for dimming control. The system includes a system controller, a transistor, and a resistor. The system controller includes a first controller terminal and a second controller terminal. The transistor includes a first transistor terminal, a second transistor terminal and a third transistor terminal. The resistor including a first resistor terminal and a second resistor terminal. The first transistor terminal is coupled, directly or indirectly, to the second controller terminal. The first resistor terminal is coupled to the second transistor terminal. The second resistor terminal is coupled to the third transistor terminal. The system controller is configured to receive an input signal at the first controller terminal and to generate an output signal at the second controller terminal. The transistor is configured to receive the output signal at the first transistor terminal and to change between a first condition and a second condition. | 2013-11-21 |
20130307432 | SYSTEMS AND METHODS FOR PROVIDING POWER TO HIGH-INTENSITY-DISCHARGE LAMPS - System and method for igniting one or more high-intensity-discharge lamps. A system includes an ignition controller configured to generate one or more signal pulses for a pulse signal during a first predetermined time period and to cause one or more voltage pulses to be applied to the one or more high-intensity-discharge lamps, the pulse signal changing between a first logic level and a second logic level during the first predetermined time period, each of the one or more signal pulses corresponding to a pulse period, the pulse period being no larger than the first predetermined time period. The ignition controller is further configured to, if the one or more high-intensity-discharge lamps are not successfully ignited after the first predetermined time period, stop generating any signal pulse for the pulse signal for a second predetermined time period, the second predetermined time period being equal to or larger than the pulse period. | 2013-11-21 |
20130307433 | CONTROL METHOD OF LAMP - The control method comprises the following steps. Firstly, whether a touch event occurs in a control device is determined. Then, responding to a color temperature set and a brightness set from the control device, a first PWM and a second PWM is generated. Then, whether the lamp connects with to the control device is determined. Then, the first PWM and the second PWM is packaged in a color control package if the lamp connects with to the control device. Then, the color control package is transmitted to the lamp in wireless. | 2013-11-21 |
20130307434 | METHOD AND APPARATUS FOR CONTROLLING A LIGHTING DEVICE - Aspects of the disclosure provide a method. The method includes detecting a dimming characteristic in an energy source that provides energy to be transferred to a load via a magnetic component, receiving a dimming control signal, and controlling a switch in connection with the magnetic component based on the dimming characteristic and the dimming control signal to transfer energy to the load via the magnetic component. | 2013-11-21 |
20130307435 | POWER SUPPLY DEVICE, VEHICLE-MOUNTED DEVICE, AND VEHICLE - A power-supply device has a first power supply circuit adapted to generate from an input voltage a first output voltage and a second power supply circuit adapted to generate from the first output voltage a second output voltage. The second power supply circuit monitors the first output voltage to check if it is higher than a first threshold voltage, and also monitors the first power-supply circuit to check if it has started operation for generating the first output voltage, so that the second power supply circuit stays on stand-by, even when the first output voltage is higher than the first threshold voltage, until the first power supply circuit starts operation for generating the first output voltage. | 2013-11-21 |
20130307436 | METHOD FOR IMPROVING OPERATION LIFETIME OF CAPACITOR, CAPACITOR CONTROL CIRCUIT STRUCTURE AND USE THEREOF - The invention provides a method for improving operation lifetime of a capacitor module in an electronic circuit employing the capacitor module, comprising the steps of providing two or more capacitor modules of same configuration; and controlling alternately a respective one of the capacitor modules to operate in the electronic circuit for a first predetermined period of time. The invention also relates to a capacitor control circuit structure for use in a location of an electronic circuit previously occupied by an original capacitor module, and the capacitor control circuit structure exhibits the extended operation lifetime with respect to the original capacitor module. The invention also relates to the use of the capacitor control circuit structure in the electronic applications. | 2013-11-21 |
20130307437 | Energy Density Intensifier for Accelerating, Compressing and Trapping Charged Particles in a Solenoid Magnetic Field - The Energy Density Intensifier for Accelerating, Compressing and Trapping Charged Particles in a Solenoid Magnetic Field is a method and apparatus operable upon a population of charged particles possessing an initial angular momentum (magnetic moment) within a vacuum mirror solenoid magnetic field. An electric field is applied generally along the longitudinal magnetic field axis accelerating, compressing and trapping the charged particles by their magnetic moment against the radial component of the field gradient of the mirror magnetic field of the solenoid magnetic field, by means of the electric force established by the electric field. | 2013-11-21 |
20130307438 | Centroidal Cycltron Charged Paticle Accelerator - The Centroidal Cyclotron reveals an apparatus and method for accelerating and trapping charged particles in a solenoid magnetic field. An oscillating electric field is applied generally transverse to the magnetic field axis accelerating and trapping charged particles by their inherent cyclotron frequency at a given magnetic field of the solenoid magnetic field producing charged particle orbits with minimum canonical angular momentum orbits and gyro-phase synchrony. | 2013-11-21 |
20130307439 | ACTUATION CONTROL AND CONTROL METHOD, PARTICULARLY FOR ELECTRICAL DISCONNECTORS - An actuation control, for electrical disconnectors, including a device for driving the actuation motor of a movable element of an electrical disconnector, elements for detecting operating parameters of the disconnector, a device for processing the operating and control parameters of the driving device, elements for storing the operating parameters, which are connected to the processing and control device in order to receive from it and store the processed operating parameters, and interface elements of the actuation control, for its activation for opening or closing the disconnector. | 2013-11-21 |
20130307440 | METHOD AND DEVICE FOR ELECTRICALLY EXCITING AN ACTUATOR FOR AN ULTRASONIC MOTOR - The invention relates to a method for electrically exciting a piezoelectric actuator of an ultrasonic motor having a mechanical resonance frequency F | 2013-11-21 |
20130307441 | System and Method for Control of Linear and Rotary Vibrators in an Electronic Device - A system and method for driving a vibrator in an electronic device, as well as electronic device employing such a system or method, are disclosed. In one example embodiment, the system for driving the vibrator includes an integrated circuit having one or more input terminals, one or more output terminals, a vibrator driver amplifier circuit, and one or more additional circuit components. The system further includes at least one processing portion for providing one or more input signals to the one or more of the input terminals. The system is configurable such that one or more control signals to be provided to the vibrator will include one or more first signals if the vibrator is a first vibrator device of a first type, and one or more second signals if the vibrator is a second vibrator device of a second type different from the first type. | 2013-11-21 |
20130307442 | DEVICE FOR RECOVERING ELECTRIC ENERGY IN DC MOTOR-DRIVEN ELECTRIC VEHICLE - A device for recovering electric energy in a DC motor-driven electric vehicle. The device includes a battery; a first inverter; an inductor; a first rectifier bridge or a second inverter; a DC motor; a second rectifier bridge or a third inverter; and a charger. The anode and the cathode of the battery are connected to input ends of the first inverter, respectively. One output end of the first inverter is connected to one end of a primary coil of the inductor. Another output end of the first inverter is connected to one input end of the first rectifier bridge or the second inverter. Another end of the primary coil of the inductor is connected to another input end of the first rectifier bridge. The charger is connected to the anode and the cathode of the battery for supplying power from an external power supply. | 2013-11-21 |
20130307443 | SLEWING-TYPE WORKING MACHINE - A slewing-type working machine includes: an electric storage device capable of being charged with regenerative electric power for regenerating slewing energy of an upper slewing body while functioning as an electric power source for an electric slewing motor; an electric storage device and electric storage device controller detecting whether the electric storage device is under a normal condition with sufficient capacity to regenerate the slewing energy or under an abnormal condition without sufficient capacity; and a controller controlling a velocity of the electric slewing motor based on a result of detection by the electric storage device and electric storage device controller, wherein the controller performs a velocity limiting control for limiting a maximum velocity of the electric slewing motor when the electric storage device is under the abnormal condition. | 2013-11-21 |
20130307444 | Power Supply System for an Electrical Drive of a Marine Vessel - A power supply system for an electrical drive of a marine vessel is provided. The electrical drive includes an electric motor that is adapted to receive electric energy from a power source. The electrical drive has a first operating state in which electric energy is supplied by the power source to the electrical drive to operate the electrical drive and a second operating state in which the electric motor of the electrical drive is decelerated or braked, wherein the electrical drive generates electric energy in the second operating state. The power supply system comprises an electric energy storage device for storing generated electric energy. | 2013-11-21 |
20130307445 | SYSTEM FOR CHARGING AN ENERGY STORE, AND METHOD FOR OPERATING THE CHARGING SYSTEM - The invention relates to a system for charging at least one energy storing cell ( | 2013-11-21 |
20130307446 | Braking Apparatus for Three-Phase Brushless Motor, and Motor-Driven Appliance Provided with Same - A braking apparatus for a three-phase brushless motor is provided in a motor-driven appliance, and includes a switching circuit having six switching elements and a brake control device. The brake control device executes two-phase short-circuit control in braking control in which a braking force is generated in the motor. In the two-phase short-circuit control, an on/off state of each of the switching elements is set in such a manner that two out of three conduction paths constituting one of a positive electrode side conduction path that connects three terminals of the motor and a positive electrode side of a direct current power source and a negative electrode side conduction path that connects the three terminals and a negative electrode side of the power source are in a conducting state and other of the three conduction paths is in a non-conducting state. | 2013-11-21 |
20130307447 | CURRENT CONTROL FOR AN ELECTRIC ACTUATOR - A controller for an electric actuator includes a reference model that generates position and speed reference signals in response to a position command signal and employs a feed forward model that accounts for dynamic loading of the electric actuator. The feed forward model receives the position and speed reference signals provided by the reference model, and in response generates feed forward signals that account for mechanical characteristics of the electric actuator. | 2013-11-21 |
20130307448 | MOTOR CONTROL DEVICE - An object is to provide a specific achievement means for achieving reliable failure determination in a control system in a motor control device. | 2013-11-21 |
20130307449 | CONTROL DEVICE - A control device for a rotating electrical machine, which is able to reduce a tracking delay of an actual output torque and actual currents with respect to a fluctuating torque command and fluctuating current commands and to reduce steady state deviations, is obtained. The control device includes a torque current computing unit; an actual current computing unit; a current feedback control unit; and a voltage control unit that controls voltages on the basis of the two-phase voltage commands. The torque command includes a fluctuation cancellation torque command for cancelling transmission torque fluctuations transmitted from the internal combustion engine, and the current feedback control unit includes a harmonic controller that calculates the two-phase voltage commands by using a characteristic of a transfer function corresponding to a periodic function of a frequency of the transmission torque fluctuations. | 2013-11-21 |
20130307450 | Electrical Control System - An electrical control system having a direct current to direct current regulator receiving a direct current supply input, wherein the regulator outputs a controlled voltage direct current inverter power feed. Included is an inverter in electrical communication with the regulator and receives the controlled voltage direct current inverter power feed, the inverter outputs an alternating current motor power feed to a permanent magnet brushless direct current motor that outputs a shaft rotational speed and a back electromotive force. Also, a control is provided for regulating the controlled voltage direct current inverter power feed based upon criteria utilizing the back electromotive force or an auxiliary motor stator wire loop signal in conjunction with an optional voltage look-up table to substantially make the controlled voltage result in a reduction of a pulse width modulation switching frequency to further smooth and reduce harmonic of the alternating current waveform to increase motor efficiency. | 2013-11-21 |
20130307451 | SYSTEM AND METHOD FOR SENSOR-LESS HYSTERESIS CURRENT CONTROL OF PERMANENT MAGNET SYNCHRONOUS GENERATORS WITHOUT ROTOR POSITION INFORMATION - A system and method are provided for controlling a permanent magnet synchronous generator without rotor position information, utilizing sensor-less hysteresis control and brushless direct current switching scheme. The present invention controls the current and torque of the permanent magnet generator without information of the rotor position in respect to the stator. | 2013-11-21 |
20130307452 | MAGNETIC POLE POSITION DETECTING DEVICE FOR DETECTING MAGNETIC POLE POSITION OF ROTOR IN PERMANENT-MAGNET SYNCHRONOUS MOTOR - A magnetic pole position detecting device includes a calculating unit for correcting a magnetic pole position detected by a magnetic pole position detecting unit. In this magnetic pole position detecting device, an additional phase is added to the magnetic pole position detected by the magnetic pole position detecting unit, in order to move a rotor. In relation to a movement amount before and after this movement, a movement amount detected by the magnetic pole position detecting unit is compared with a movement amount detected by an encoder. When a difference between them is larger than a predetermined threshold, a process of detecting the magnetic pole position is determined as false detection. | 2013-11-21 |
20130307453 | VARIABLE GAIN AMPLIFIER, CURRENT DETECTING CIRCUIT USING THE SAME, MOTOR DRIVING CIRCUIT AND ELECTRONIC APPARATUS - A variable gain amplifier includes: a first input terminal, a second input terminal and an output terminal; an operational amplifier; a first resistor interposed between the first input terminal and an inverted input terminal of the operational amplifier; second and third resistors interposed between the inverted input terminal and the output terminal; and a fourth variable resistor having a first terminal connected to a node between the second resistor and the third resistor and a second terminal connected to the non-inverted input terminal, wherein the fourth variable resistor includes a resistance pass including a resistor and a switch. | 2013-11-21 |
20130307454 | DRIVER CIRCUIT AND METHOD - An amount of a motor drive current is controlled to an appropriate value. Two coils are provided, and a rotor is rotated by the coils by setting different phases for the supplied currents to the two coils. During a phase where one of the coils is in a high-impedance state, an induced voltage generated in the coil is detected. According to the state of the induced voltage, an output control circuit controls the amounts of the motor drive currents supplied to the two coils. | 2013-11-21 |
20130307455 | STATOR TEETH, STATOR, ROTATING ELECTRIC MACHINE, AND METHOD FOR CONTROLLING ROTATING ELECTRIC MACHINE - There is provided a single motor which performs plural driving characteristics and can expand output range thereof. Three coils are wounded around each of the stator teeth A to F, and provided to each stator tooth A to F are switches for providing a concentrated winding state by connecting the three coils in series in each stator tooth A to F, and switches for providing a distributed winding state by connecting in series the coils of any one of units through the stator teeth A to F Depending on the rotating speed, the torque or the like, the coils are changed between the concentrated winding state and the distributed winding state. | 2013-11-21 |
20130307456 | ELECTRIC TURNING DEVICE - An electric turning device includes an electric motor configured to drive and turn an upper turning body that is rotatably arranged on a base part, an inverter that supplies electric power to the electric motor, a control part that supplies a drive command for controlling drive operations of the electric motor to the electric motor according to a lever input amount, and an abnormality detecting part that detects an abnormality. When the abnormality detecting part detects the abnormality, the control part arranges the drive command to include a vibration component and supplies the drive command including the vibration component to the electric motor. | 2013-11-21 |
20130307457 | Method Of Optimising Input Components - A method of controlling a current flowing through a component of a drive comprising the steps of: estimating the current flowing through a component; estimating the temperature of the component; comparing the estimated temperature with a desired maximum temperature for the component; and adjusting the current flowing through the component based on the result of the comparing step. | 2013-11-21 |
20130307458 | Motor Driving Circuit and Method Thereof - A motor driving circuit for driving a motor includes: a driving-stage circuit, for converting an input voltage into a first output voltage and a second output voltage, and comprising a first transistor, a second transistor, a third transistor and a fourth transistor; an output stage circuit, for converting the first output voltage or the second output voltage into a motor speed signal; and a control unit, coupled to the first, the second, the third and the fourth transistors and the output stage circuit, for generating first, second, third and fourth transistor control signals to control the first, the second, the third and the fourth transistors respectively. | 2013-11-21 |
20130307459 | MOTION PROFILE GENERATOR - Systems and methods are provided for generating a constraint-based, time-optimal motion profile for controlling the trajectory of a point-to-point move in a motion control system. A profile generator can calculate an ST-curve motion profile that includes a jerk reference that varies continuously over time for at least one of the motion profile segments, thereby producing a smooth, time-optimal trajectory. The profile generator can create the motion profile to conform to a set of motion constraints provided by the user. The profile generator also supports calculation of time-optimal motion profiles having segments that align to the sample time of the motion control system. In some embodiments, the profile generator can efficiently generate the motion profile by performing reference calculations only for those segments that will be used in the final motion profile for a given point-to-point move. | 2013-11-21 |
20130307460 | Drive Circuit of Stepping Motor, Integrated Circuit Thereof, and Electronic Equipment Including Same, and Method for Controlling Drive Circuit of Stepping Motor - A drive circuit of a stepping motor includes a D/A converter, a current controller having a comparing unit, and an abnormality detecting unit. The DAC generates a target voltage indicating a target value for an excitation current determined based on a reference voltage indicating an upper limit value of the excitation current flowing into the stepping motor. The current controller controls the excitation current based on this target voltage. The comparing unit compares a voltage corresponding to the excitation current and the target voltage. The abnormality detecting unit detects an abnormality of the wire between the drive circuit and the stepping motor based on an output signal from the comparing unit and a control signal indicating a polarity of the excitation current. | 2013-11-21 |
20130307461 | METHOD FOR OPERATING A POWER CONVERTER, AND POWER CONVERTER CONTROL UNIT - A method for operating a power converter having at least one power converter half-bridge, in which a controllable switching element and a freewheeling diode connected parallel thereto and in the blocking direction are provided respectively between a first direct voltage terminal and an alternating voltage terminal as well as between the alternating voltage terminal and a second direct voltage terminal. The switching elements of the at least one half-bridge are controlled in alternating fashion and in each case interrupted by controlling pauses. The duration of the controlling pauses is set on the basis of a determined voltage drop at at least one of the freewheeling diodes. | 2013-11-21 |
20130307462 | AC MOTOR DRIVE DEVICE - A circuit disconnection element that can open or short-circuit between a power storage element and a step-up/step-down bidirectional chopper circuit is provided in a power storage system, thereby preventing a self-discharge state in a process of charging. Furthermore, at the time of occurrence of an abnormality, the power storage element is detached from other devices including the step-up/step-down bidirectional chopper circuit. Accordingly, an energy loss of the power storage element at the time of power regeneration can be reduced to improve the energy use efficiency. Further, breakage influences such that the power storage element causes breakage in other devices at the time of occurrence of the abnormality can be prevented, thereby enabling to obtain an AC motor drive device having mounted therein a highly safe power storage system. | 2013-11-21 |
20130307463 | POWER CONVERSION APPARATUS, POWER CONVERSION METHOD, MOTOR SYSTEM, AND TWO-PHASE INDUCTION MOTOR - A power conversion method including: receiving an input voltage which is a single-phase AC voltage; designating a first target voltage and a second target voltage respectively representing consecutive target values of a first-phase output voltage and a second-phase output voltage which form a two-phase AC voltage; cyclically connecting and disconnecting a pair of input terminals and a pair of first output terminals at a duty cycle corresponding to a ratio |ref | 2013-11-21 |
20130307464 | Portable Battery Charger - A portable device charger is disclosed, which is able to charge portable devices whether it is connected to an external power supply or not. The charger connects to household AC power as well as USB DC power, and further has a photovoltaic cell. It manages the input power from these three sources to charge a portable device and/or recharge the charger's battery, by supplementing the input power with battery power if the device demands more power than the input source, and charging the battery with remaining power if the device demands less power than is provided by the input source. The charger turns off the AC/DC converter and draws no power from the AC source if the battery is full and there is no attached device. | 2013-11-21 |
20130307465 | Air driven alternators for battery powered vehicles - The mechanism recharges the batteries of electric powered vehicles while the vehicle is in motion. As a vehicle moves forward it creates an air flow that enters the air scoop of the mechanism. The air flow passes through the air reduction tunnel and turns the wind blades of the mechanism which turns a drive shaft. The drive shaft has two gears, one turns a governor, the other turns an alternator that creates electric current that passes through a voltage regulator and on to the batteries that drive the vehicles motor. Air velocity entering the mechanism varies by the forward speed of the vehicle. A governor maintains the desired rpms of the drive shaft by changing the pitch (angle) of the variable pitch wind blades. A drain hole is located in the bottom of the base for moisture taken in through the scoop. | 2013-11-21 |
20130307466 | System and Method for Charging Car Batteries - A system for charging vehicle batteries has a number of charge devices, each arranged in an associated vehicle for charging a battery of the respective vehicle. The charge devices determine a charge profile for the associated battery and to transmit it to a charge management unit. The charge management unit references the transmitted charge profiles to determine a power distribution to the charge devices. | 2013-11-21 |
20130307467 | Power Converter Circuit - A power converter circuit includes input terminals configured to receive an input voltage and an input current and output terminals configured to provide an output voltage and an output current. A boost converter stage is coupled between the input terminals and the output terminals. The power converter circuit is operable to operate in one of a first operation mode, a second operation mode, and a third operation mode dependent on the output voltage. The first, second and third operation modes are mutually different. In each of the first, second and third operation modes, the input current is controlled dependent on the input voltage. | 2013-11-21 |
20130307468 | STRUCTURE OF TRANSMISSION AND RECEPTION UNIT IN WIRELESS CHARGING SYSTEM - The present disclosure provides the structure of a transmission and reception unit in a wireless charging system. To this end, according to an embodiment, there is provided a wireless power receiver configured to receive a wireless power signal from a wireless power transmitter to receive wireless power, and the wireless power receiver may include a receiving coil unit comprising a primary coil and a secondary coil receiving the wireless power signal; and a charger configured to charge power which is a sum of wireless power received by the primary coil and the secondary coil, respectively, based on the wireless power signal. | 2013-11-21 |
20130307469 | CONTACTLESS POWER SUPPLY SYSTEM AND POWER TRANSMISSION COIL FOR CONTACTLESS POWER SUPPLY SYSTEM - A contactless power supply system includes a power transmission coil, a power receiving coil, and a center tap that is provided at the power transmission coil. Specifically, the power transmission coil has a first coil and a second coil. The first coil is configured with a first conducting wire that circularly extends from the center tap by winding in a first direction from a first internal circumference side to a first external circumference side. The second coil is configured with a second conducting wire that circularly extends from the center tap by winding in a second direction, which is opposite to the first direction, from a second internal circumference side to a second external circumference side. A first number of windings of the first coil is approximately the same as a second number of windings of the second coil. | 2013-11-21 |
20130307470 | WIRELESS CHARGING STRUCTURE FOR MOBILE INFORMATION TERMINAL IN VEHICLE - A wireless charging structure to wirelessly charge a mobile information terminal in a vehicle includes a mobile information terminal case, a support, a receiving coil, a reception controller, a transmitting coil, and a transmission controller. The transmitting coil is provided on a vehicle side and provided on an inner side of a facing portion of the support. The transmission controller is provided on the vehicle side and electrically connected to the transmitting coil. The transmission controller includes an inverter configured to convert direct current supplied from a battery provided on the vehicle side to alternating current and to supply the alternating current to the transmitting coil. The reception controller includes a converter configured to convert alternating current flowing through the receiving coil due to the magnetic flux generated by the transmitting coil to direct current. | 2013-11-21 |
20130307471 | VEHICLE, POWER TRANSMITTING DEVICE AND CONTACTLESS POWER SUPPLY SYSTEM - A contactless power supply system contactlessly transmits electric power from a power transmitting device to a vehicle. The vehicle includes: a power receiving unit that contactlessly receives electric power from the power transmitting device; an electrical storage device that stores electric power received by the power receiving unit; and an impedance adjustment unit that includes a DC/DC converter and a relay and that is used to adjust an impedance between the power receiving unit and the electrical storage device. A vehicle ECU switches between a power supply path of which the impedance is adjusted by the DC/DC converter and a power supply path that does not use the DC/DC converter on the basis of a state of charge of the electrical storage device. | 2013-11-21 |
20130307472 | STORAGE BATTERY INDUCTIVE CHARGING DEVICE - A battery inductive charging device, e.g., a handheld tool battery inductive charging device for a motor vehicle, has at least one charging coil and an high-voltage energy input which is provided to take up a charging energy. | 2013-11-21 |
20130307473 | MOBILE TERMINAL - Disclosed is a mobile terminal capable of wirelessly charging a battery using a magnetic induction method. The mobile terminal may include a battery configured to support normal charging mode and fast charging mode, a power pick-up unit configured to pick up power transmitted by a wireless charging device based on magnetic induction, generate a charging voltage based on the pick-up power, and supply the charging voltage to the battery, and a control unit configured to increase the pick-up power by controlling an impedance of the power pick-up unit and increase a charging speed of the battery based on the increased pick-up power in the fast charging mode. The mobile terminal can increase the charging speed of the battery in such a way as to increase pick-up power from power transmitted by the wireless charging device by varying the impedance of the power pick-up unit in fast charging mode. | 2013-11-21 |
20130307474 | NON-CONTACT CHARGER SYSTEM, CONTROL DEVICE, WIRELESS COMMUNICATION DEVICE, AND NON-CONTACT CHARGING DEVICE - An object of the invention is to provide a non-contact charging system and a control device in which the non-contact charging system and a wireless communication system are formed so that non-contact charging and wireless communication are compatible with each other. A control unit | 2013-11-21 |
20130307475 | CHARGE RATE OPTIMIZATION - A charging system for a battery pack, including a charging station transferring energy to the battery pack at a maximum fast charge rate in a first operational mode and transferring energy to the battery pack at a slower charge rate in a second operational mode; a data collection system acquiring data indicating a state of charge of the battery pack and one or more desired charge optimization parameters; and a station control, responsive to the data and to the desired charge optimization parameters, automatically establishing a charging profile for the battery pack to assert a control signal and operate the charging station in the second operational mode whenever the charging station is able to transfer sufficient energy to the battery pack at the slower charge rate to meet an SOC target and a charge completion time target. | 2013-11-21 |
20130307476 | METHOD AND SYSTEM FOR SERVICING HIGH VOLTAGE BATTERY PACKS - A system and method for providing energy management and maintenance of a high energy battery pack that does not require installation of the battery pack into an operational EV. A battery service unit has multiple access mechanisms to charge or discharge a high energy battery pack through a primary or secondary high voltage port of the pack, irrespective of whether the battery pack is installed into an operating environment by adding a capability of providing a signature duplicating installation of the pack in the operating environment when necessary. | 2013-11-21 |
20130307477 | CHARGING STATION FOR WIRED CHARGING OF ELECTRIC VEHICLE - A charging post at a charging station for charging an electric vehicle can be lowered into the ground by a lifting device such that it does not become a physical obstacle or optically impair the environment and is not damaged by external influences. | 2013-11-21 |
20130307478 | SECONDARY SERVICE PORT FOR HIGH VOLTAGE BATTERY PACKS - A system and method for providing energy management and maintenance of a high energy battery pack that does not require installation of the battery pack into an operational EV. A secondary service port is provided to enable certain maintenance operations while by-passing battery pack interlocks and protection mechanisms used when the battery pack is installed into an operating environment. | 2013-11-21 |
20130307479 | ENERGY STORAGE DEVICE AND METHOD FOR CONTROLLING THE SAME - An energy storage device and methods for controlling the same are disclosed. The energy storage device can include a connector to or from which at least one battery pack is attached or detached, a power converter that converts external input power into DC power in a charge mode, and a switching unit that performs a switching operation such that the DC power converted by the power converter is charged in a first battery pack attached to the connector in the charge mode. Energy storage device can also include a controller that controls the switching unit to turn off electrical connections between the energy storage device and the first battery pack and a second battery pack for a predetermined off period when the first and second battery packs are attached to the connector. Accordingly, when a battery pack is attached or detached, a surge of inrush current may be reduced. | 2013-11-21 |
20130307480 | SELF-DISCHARGE FOR HIGH VOLTAGE BATTERY PACKS - A system and method for providing energy management and maintenance of a high energy battery pack through use self-discharge features and processes. A battery pack is configured with self-discharger enabled-components that selectively discharge energy from the battery pack without the battery pack providing operational power. | 2013-11-21 |
20130307481 | Technique for Rapid Battery Capacity Testing - A method of rapidly testing the discharge capacity of a battery comprises discharging the battery at a first discharge rate until a first cutoff potential is reached, relaxing the battery during a first period, discharging the battery at a lower discharge rate until a second cutoff potential is reached and relaxing the battery during a second, longer period. The process is repeated with successively lower discharge rates and successively longer relaxation periods until the battery is substantially exhausted. The cumulative value of all of the discharges is taken as a tested capacity of the battery. Optionally, cleanup charges can be sent to the battery during the relaxation periods and a low-frequency, low-amplitude current can be supplied throughout testing in order to shorten testing time. | 2013-11-21 |
20130307482 | Device and method for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers - A device and method for charging a plurality of parallel-connected non-aqueous electrolyte secondary batteries with parallel-connected chargers, wherein a second charger which parallel connected to the first charger is additionally arranged to ensure that the charge process can be continued, and the charge process can be performed without battery management system. | 2013-11-21 |
20130307483 | BATTERY SYSTEM - A battery system includes a battery having a battery case and a resistor provided on at least one of surfaces of the battery case, and the resistor is made of a material having specific resistance not more than 10×10 | 2013-11-21 |
20130307484 | COMMUNICATION DEVICE, COMMUNICATION METHOD, BATTERY DEVICE, AND ELECTRONIC APPARATUS - The present technique relates to a communication device, a communication method, a battery device, and an electronic apparatus that can easily manage a battery device formed with a large number of battery cells. A transformer ( | 2013-11-21 |
20130307485 | CYCLING METHOD FOR SULFUR COMPOSITE LITHIUM ION BATTERY - A method for cycling a sulfur composite lithium ion battery includes a step of charging and discharging the sulfur composite lithium ion battery at a first voltage range between a predetermined highest voltage and a predetermined lowest voltage. The lithium ion battery includes an electrode active material. The electrode active material includes a sulfur composite. The step of charging and discharging satisfies at least one conditions of (1) and (2): (1) the predetermined lowest voltage of the first voltage range is larger than a discharge cutoff voltage of the sulfur composite; and (2) the predetermined highest voltage of the first voltage range is smaller than a charge cutoff voltage of the sulfur composite. A method for using a sulfur composite as an electrode active material of a lithium ion battery is also disclosed. | 2013-11-21 |
20130307486 | CHARGING SYSTEM - A charging system is provided for charging a chargeable battery. The charging system includes a phase-shifting transformer and a converting unit. The phase-shifting transformer includes a three-phase primary winding assembly and plural three-phase secondary winding assemblies. After a three-phase AC input voltage is received by the three-phase primary winding assembly, the three-phase AC input voltage is decreased, so that plural three-phase AC output voltages are outputted from respective three-phase secondary winding assemblies. Moreover, there is a phase-shifting angle between any two of the plural three-phase AC output voltages. The converting unit is electrically connected with the phase-shifting transformer, and includes plural three-phase rectifying circuits and a DC-DC converting circuit. The plural three-phase AC output voltages are rectified by the three-phase rectifying circuits, and the rectified voltage is converted into a DC charging voltage to charge the chargeable battery. | 2013-11-21 |
20130307487 | CELL TEMPERATURE AND DEGRADATION MEASUREMENT IN LITHIUM ION BATTERY SYSTEMS USING CELL VOLTAGE AND PACK CURRENT MEASUREMENT AND THE RELATION OF CELL IMPEDANCE TO TEMPERATURE BASED ON SIGNAL GIVEN BY THE POWER INVERTER - A method and system for determining the temperature of cells in a battery pack, without using temperature sensors, by measuring the impedance of the cells and using the impedance to determine the temperature. An AC voltage signal is applied to the battery pack, and a time sample of voltage and current data is obtained. The voltage and current data is narrowed down to a simultaneous time window of interest, and a fast fourier transformation is performed on the windowed voltage and current data to identify voltage and current magnitudes at one or more specific frequencies. The voltage and current magnitudes are used to determine the impedance at the one or more frequencies. Finally, the impedance is used to determine the temperature of the cell or cells using a look-up table, where the impedance, the frequency, and a state of charge are used as input parameters for the look-up. | 2013-11-21 |
20130307488 | BATTERY MANAGEMENT SYSTEM - A battery management system is provided. In one embodiment, the battery management system includes a microcomputer unit that sets a charge amount of a battery to less than the total designed capacity of the battery and controls charging of the battery based on a constant current-constant voltage (CC-CV) charging method, and a current controller that controls an initial charge current applied to the battery according to the set charge amount. | 2013-11-21 |
20130307489 | METHOD AND APPARATUS FOR CHARGING MULTIPLE ENERGY STORAGE DEVICES - An electric vehicle includes a controller configured to receive sensor feedback from a high voltage storage device and from a low voltage storage device, compare the sensor feedback to operating limits of the respective high and low voltage storage device, determine, based on the comparison a total charging current to the high voltage storage device and to the low voltage storage device and a power split factor of the total charging current to the high voltage device and to the low voltage device, and regulate the total power to the low voltage storage device and the high voltage storage device based on the determination. | 2013-11-21 |
20130307490 | CHARGE CONTROL CIRCUIT, CHARGE CIRCUIT, AND MOBILE DEVICE - A charge control circuit includes: a charge/discharge circuit to charge a capacitor when an input current from an input power supply is smaller than a first current, and discharge the capacitor when the input current is greater than the first current; a discharge circuit to discharge the capacitor when the input current becomes greater than a second current greater than the first current; an error amplifier circuit to amplify an error between a lower voltage between a capacitor charging voltage and a reference voltage corresponding to the maximum output voltage, and a feedback voltage corresponding to the output voltage; and a drive circuit to perform switching of a transistor of a booster circuit, including an inductor and the transistor to increase an inductor current, configured to boost the output voltage by supplying the inductor current to the terminal when the transistor is off, so that the error becomes smaller. | 2013-11-21 |
20130307491 | BIDIRECTIONAL POLYPHASE MULTIMODE CONVERTER INCLUDING BOOST AND BUCK-BOOST MODES - A charging method using a multiphase line voltage for charging an energy storage system (ESS) using a polyphase motor drive circuit communicated to a polyphase motor, the polyphase motor drive circuit including a plurality M of driver stages, one driver stage for each phase of the polyphase motor with each driver stage coupled across the energy storage system. | 2013-11-21 |
20130307492 | VEHICULAR POWER GENERATION SYSTEM AND POWER GENERATION CONTROL METHOD FOR THE SAME - A vehicular power generation system includes: a battery which is charged by power generation electric power of a generator that is driven by an internal combustion engine; and a power generation control device which reduces the amount of fuel to be consumed for power generation of the internal combustion engine. The power generation control device includes: a unit which sets an operating range that is small in the amount of fuel to be consumed for an increase in torque of the internal combustion engine; a unit which sets electric power with high power generation efficiency to a target value of power generation electric power according to rotation speed and power generation voltage of the generator; and a unit which controls so that the amount of power generation of the generator is a target value when the operating point of the internal combustion engine is in the operating range. | 2013-11-21 |
20130307493 | POWER GENERATING APPARATUS OF RENEWABLE ENERGY TYPE AND METHOD OF OPERATING THE SAME - It is intended to provide a power generating apparatus of renewable energy type which obtains desired torque rapidly in response to changes of the renewable energy as well as a method of operation such an apparatus. The power generating device which generates power from a renewable energy source, includes a rotating shaft | 2013-11-21 |
20130307494 | ON-LOAD TAP-CHANGER CONTROL METHOD, EXCITATION CONTROL SYSTEM CARRYING OUT SAID CONTROL METHOD AND POWER EXCITATION CHAIN - The present invention relates to an on-load tap changer control method for a power transformer in a power system. The power transformer has a primary side for a connection to a first grid in which electric power is generated, and a secondary side for connection to a second grid in which electrical power is consumed, the power transformer being equipped with an on-load tap changer. The method includes measuring the voltage and current at least on the primary side (u | 2013-11-21 |
20130307495 | METHOD AND APPARATUS TO INCREASE EFFICIENCY IN A POWER FACTOR CORRECTION CIRCUIT - A power factor correction (PFC) controller includes a capacitor, an error amplifier, a switching frequency adjuster, a comparator, and a drive signal generator. The current source generates a current that is representative of an instantaneous input voltage of a PFC converter to charge the capacitor when a power switch of the PFC converter is off. The switching frequency adjuster generates an adjusted error signal in response to an error signal generated by the error amplifier. The comparator compares a voltage on the capacitor with the adjusted error signal to generate a first signal to end an off time of the power switch. The drive signal generator controls switching of the power switch in response to the first signal. The switching frequency adjuster changes the adjusted error signal in response to changes in the error signal to adjust an average switching frequency of the power switch. | 2013-11-21 |
20130307496 | SEMICONDUCTOR DEVICE AND DRIVING METHOD THEREOF - One object of the invention is to reduce discharge of electric charge from a capacitor when supply of power supply voltage to a charge pump circuit is stopped and restarted, so that a time required after the supply of power supply voltage is restarted and before an input signal is boosted is shortened. A semiconductor device includes a boosting circuit portion including a charge transfer element and a capacitor, boosting a voltage level of an input signal, and outputting an output signal having a boosted voltage level; a detection circuit monitoring a voltage level of the output signal; and a control circuit outputting a signal for controlling boosting of the voltage level of the input signal to the boosting circuit portion in accordance with the voltage level obtained by the detection circuit. The boosting circuit portion includes a switch electrically connected to the capacitor and the charge transfer element. | 2013-11-21 |
20130307497 | SWITCHING POWER SUPPLY DEVICE - Aspects of the invention include a switching power supply device that includes a zero current detecting circuit that detects zero current of electric current flowing through the inductor to turn ON the switching element, an ON width generating circuit that determines the ON width of the switching element to turn OFF the switching element, and an OFF width detecting circuit that detects the OFF width of the switching element based on the output of the ON width generating circuit and the output of the zero current detecting circuit, and holds the OFF width until the next operating cycle. Aspects of the invention also include an ON width adjusting circuit that is included in the ON width generating circuit and adjusts the ON width of the switching element in the next operation cycle according to the width detected by the OFF width detecting circuit. | 2013-11-21 |
20130307498 | MULTI-PHASE SWITCHING CONVERTER AND CONTROL METHOD THEREOF - A multi-phase switching converter comprising a plurality of switching circuits, a comparing circuit and a control circuit. The comparing circuit generates a comparison signal based on a reference signal and the output voltage of the multi-phase switching converter. The control circuit can turn on the following switching circuit based on the comparison signal only after the time from the current switching circuit being turned on reaches a first time threshold or the off-time of the current switching circuit reaches a second time threshold, wherein the first time threshold is longer than the second time threshold. | 2013-11-21 |
20130307499 | SWITHCED MODE POWER SUPPLY - A power supply includes an adapter, first, second, and third switches, a control circuit, and a pulse modulating chip. The second switch is connected to the first switch and a node. The third switch is connected to an output terminal via the node. The third switch is grounded. The control circuit is connected between the node and a first control end of the first switch. The pulse module is connected to a second control end of the second switch and a third control end of the third switch. The control circuit sends a control signal to the first control end to switch off the first switch after determining that a voltage of the node is low level for a period of time longer than a predetermined time. | 2013-11-21 |
20130307500 | POWER CONVERSION APPARATUS - A power conversion apparatus includes a power-conversion circuit unit that includes at least two voltage-type bridge circuits of an upper and lower arm configuration including switching elements connected in series, each of the switching elements including a transistor and a free wheel diode connected to the transistor in inverse parallel. Each of the voltage-type bridge circuits is configured to include, as the free wheel diodes: a SiC-SBD (SiC-Schottky-Barrier Diodes) in both upper and lower arms; a SiC-SBD only in the upper arm; a SiC-SBD only in the lower arm; or a diode other than the SiC-SBD in both the upper and lower arms; and the power-conversion circuit unit is configured by combining at least two configurations among the four configurations for the voltage-type bridge circuits. | 2013-11-21 |
20130307501 | METHOD OF FORMING A POWER SUPPLY CONTROLLER AND STRUCTURE THEREFOR - In one embodiment, a method of forming a power supply controller may include configuring the power supply controller to control a pass transistor to form an output current responsively to a control signal and independently of the value of the output voltage until the control signal is less than a deviation from a desired value of the output voltage. | 2013-11-21 |
20130307502 | REDUCING POWER CONSUMPTION IN A VOLTAGE REGULATOR - A voltage regulator includes an amplifier, a first buffer and a second buffer. The amplifier is designed to generate an error voltage between a reference voltage and a voltage at an output node of the voltage regulator. The first buffer is coupled to receive the amplified error voltage and, in response, to drive a first pass transistor. The first buffer includes a non-linear resistance element. The resistance of the non-linear resistance element varies non-linearly with a load current drawn from the output node. The second buffer is coupled to receive the amplified error voltage, and in response, to drive a second pass transistor. The second buffer includes a linear resistance element. The resistance of the linear element is a constant. The use of the non-linear resistance element enables reduction in power consumption in the voltage regulator. | 2013-11-21 |
20130307503 | MULTI-PHASE SWITCHING CONVERTER WITH OVERLAP MODE AND CONTROL METHOD THEREOF - A multi-phase switching converter and control method thereof. The multi-phase switching converter includes a plurality of switching circuits and a controller. The output terminals of the plurality of switching circuits are coupled together to provide an output voltage to a load. The controller is configured to generate a plurality of control signals to turn on the plurality of switching circuits successively. When a load current increase is detected, the controller operates in an overlap mode and at least two switching circuits subsequent to the current switching circuit are turned on simultaneously. After the overlap mode, the controller resumes to the interleave mode and turns on the plurality of switching circuits successively from the switching circuit subsequent to the at least two switching circuits. | 2013-11-21 |
20130307504 | VOLTAGE GENERATION CIRCUIT - A voltage generation circuit has N sets of voltage step-up circuits configured to start a voltage step-up operation for increasing an absolute value of an output voltage and configured to stop the voltage step-up operation when the output voltage reaches a step-up voltage that is independently set for each voltage step-up circuit; and a control circuit configured to control such that the N sets of voltage step-up circuits operate in accordance with order of priority while limiting a maximum number of voltage step-up circuits that simultaneously operate, out of the N sets of voltage step-up circuits, to a plural number lower than the N sets. | 2013-11-21 |
20130307505 | SWITCHING CIRCUITS - A switching circuit and a method of operating the same. The switching circuit comprises: a switching transistor adapted to control operation of the switching circuit according to a control signal applied to the control terminal of the switching transistor; a regulating circuit adapted to generate the control signal; and a detecting circuit adapted to sense a voltage at the control terminal when the switching transistor is in an OFF state and to generate a drive signal according to the sensed voltage. The regulating circuit is adapted to generate the control signal based on the generated drive signal. | 2013-11-21 |
20130307506 | HYBRID REGULATOR WITH COMPOSITE FEEDBACK - A hybrid voltage regulator includes a shunt circuit, a shunt feedback circuit, a pass circuit, and a bias controller. The bias controller is configured to control the pass circuit. The hybrid voltage regulator may also include a current source. This hybrid voltage regulator reduces current consumption at low load conditions (improving power efficiency and battery life, particularly for CMOS based regulators), and also provides wideband power supply rejection and fast transient response. | 2013-11-21 |
20130307507 | METHOD AND APPARATUS FOR ZERO CURRENT DETECTION - This application discusses, among other things, zero current detection. In an example, a circuit for zero current detection can include a compensating circuit and a detecting circuit. The compensating circuit can be configured to feed back a compensating voltage to the detecting circuit according to an output voltage of a DC-DC converting circuit. The detecting circuit can be configured to dynamically adjust an intentional offset voltage according to the compensating voltage, and to perform zero current detection of the DC-DC converting circuit according to the adjusted Voffset. | 2013-11-21 |
20130307508 | Method for Regulating a Buck/Boost Converter - A method for regulating a clocked buck/boost converter, wherein a buck converter switching element is driven at a common clock frequency with a first pulse-width-modulated switching signal and a boost converter switching element is driven with a second pulse-width-modulated switching signal to convert an input voltage into a regulated output voltage, and a regulator signal from an output voltage regulator is used to generate the first and second pulse width modulated switching signals such that the buck converter is operated in a discontinuous mode with quasi-resonant switching, where the inductor current or the current through the buck converter switching element is detected and compared with a reference current, where the regulator signal is amplified to the extent that the reference current is reached, in terms of time, before a turn-off pulse of the first pulse-width-modulated switching signal, and where the second pulse-width-modulated switching signal is generated using the amplified regulator signal. | 2013-11-21 |
20130307509 | DIGITAL EVENT GENERATOR, COMPARATOR, SWITCHED MODE ENERGY CONVERTER AND METHOD - A digital event generator includes a counter configured to provide at least one count value based on a clock signal, and a comparator configured to evaluate a first portion of a first count value to detect a near occurrence of an event, in response to a detection of a near occurrence of an event, evaluate a second portion of a second count value, and provide the event signal based on the evaluation and digital event time information. A switched mode energy converter uses said digital event generator. | 2013-11-21 |
20130307510 | METHOD FOR CONVERTING A HIGH VOLTAGE LEVEL TO A LOW VOLTAGE LEVEL - In a method, a high voltage level is converted to a low voltage level by using a high side driver and a low side driver electrically coupled with the high side driver. The high side driver is substantially turned off upon a detection that the high side driver leaves a cutoff region of the high side driver during a tri-state mode. | 2013-11-21 |
20130307511 | HYSTERETIC CURRENT MODE CONTROLLER FOR A BIDIRECTIONAL CONVERTER WITH LOSSLESS INDUCTOR CURRENT SENSING - A system and circuit for achieving bidirectional hysteretic current mode control of a converter. The system comprises a summer that provides a constant hysteresis and has added switching noise immunity, a comparator, a lossless inductor current sense means and a converter. A circuit using the inductors internal resistance for sensing the current through an inductor in a lossless manner is described. The circuit preserves both DC and dynamic current information while incorporating the RC time constant, difference amplifier and signal amplification, all using only one amplifier. This circuit provides excellent common mode and differential noise immunity, while still having a high bandwidth and small group delay of the current signal. A method to accomplish stability of a current mode controlled converter when closing the loop to control the output voltage with very high accuracy and gain is described. | 2013-11-21 |
20130307512 | SYSTEMS FOR INDIRECT AVERAGE CURRENT MEASUREMENT - One example of the invention relates to a power system. The power system can include a switching power converter configured to convert an input voltage to an output voltage for providing power at an output thereof to which a load is connectable. A measurement system can include measurement circuitry configured to measure an average of an accessible current in the power converter during both continuous and discontinuous modes of operation and derive an average measurement of another current in the power converter based on timing control signals used to control operation of the power converter. | 2013-11-21 |
20130307513 | HIGH VOLTAGE FIELD EFFECT TRANSISTORS - Transistors suitable for high voltage and high frequency operation. A nanowire is disposed vertically or horizontally on a substrate. A longitudinal length of the nanowire is defined into a channel region of a first semiconductor material, a source region electrically coupled with a first end of the channel region, a drain region electrically coupled with a second end of the channel region, and an extrinsic drain region disposed between the channel region and drain region. The extrinsic drain region has a wider bandgap than that of the first semiconductor. A gate stack including a gate conductor and a gate insulator coaxially wraps completely around the channel region, drain and source contacts similarly coaxially wrap completely around the drain and source regions. | 2013-11-21 |
20130307514 | Output Module for Industrial Control with Sink and Source Capability and Low Heat Dissipation - An I/O circuit for use with an industrial controller provides a photovoltaic optical isolator communicating between a controller and a field-side of the I/O circuit, the photovoltaic optical isolator eliminating the need for high wattage power dropping circuits for powering the field-side of the I/O circuit from high-voltage field signals. The field effect transistor type transistors permit use of the low-power photovoltaic optical isolator while allowing flexible connections to various field circuit types. | 2013-11-21 |
20130307515 | CIRCUIT FOR GENERATING A DUAL-MODE PTAT CURRENT - The present invention discloses a circuit for generating a dual-mode proportional to absolute temperature (PTAT) current. The circuit includes a voltage stabilizing circuit to provide a voltage reference, and a load current control circuit comprising a first transistor to provide a first load current based on the voltage reference, a second transistor to provide a second load current based on the voltage reference, a first switch to control whether to allow the first load current to flow therethrough in response to different predetermined temperatures, and a second switch to control whether to allow the second load current to flow therethrough in response to the different predetermined temperatures. A resultant current resulting from at least one of the first load current or the second load current has different current magnitudes at the different predetermined temperatures. | 2013-11-21 |
20130307516 | BANDGAP REFERENCE CIRCUIT - A bandgap reference circuit including two sets of bipolar junction transistors (BJTs). A first set of two or more BJTs configured to electrically connect in a parallel arrangement. The first set of BJTs is configured to produce a first proportional to absolute temperature (PTAT) signal. A second set of two or more BJTs configured to electrically connect in a parallel arrangement. The second set of BJTs is configured to produce a second PTAT signal. A circuitry configured to electrically connect to the first set of BJTs and the second set of BJTs. The circuitry is configured to combine the first PTAT signal and the second PTAT signal to produce a reference voltage. | 2013-11-21 |
20130307517 | LOW-VOLTAGE BAND-GAP VOLTAGE REFERENCE CIRCUIT - The present application discusses low voltage band-gap voltage reference circuit and methods. In an example the circuit can include a current mirror, an operational amplifier adopting an N-Metal-Oxide-Semiconductor (NMOS) input pair structure, a band-gap output circuit, an adaptive adjustment circuit; and two branches of Bipolar Junction Transistor (BJT). The current mirror can be configured to receive an output signal of the operational amplifier and to provide a current to the two branches of BJT. The operational amplifier can be configured to differentially input voltages at the upper ends of the two branches of BJT, to generate the output signal to the current mirror, and to equalize the voltages at the upper ends of the two branches of BJT using a deep negative feedback. | 2013-11-21 |
20130307518 | Self-Calibrating Differential Current Circuit - In one embodiment, a constant-current generator is connected in series with a dependent (e.g., tail) device. A switched capacitor circuit connected to the gate of the dependent device is operated to (i) charge at least one capacitor of the switched capacitor circuit, (ii) use the at least one charged capacitor to adjust the gate voltage of the dependent device to drive the dependent current through the dependent device to be equal to the constant current through the constant-current generator, and (iii) direct the dependent and constant currents through source and sink current nodes. | 2013-11-21 |
20130307519 | SWITCHING CIRCUIT AND ELECTRONIC DEVICE USING THE SAME - An electronic device comprises a power supply, a load, a switching module, a voltage converting module, and a control module. The switching module establishes an electrical connection between the power supply and the voltage converting module when the electronic device is powered on. The voltage converting module is powered on through the switching module and outputs a working voltage. The control module is thus powered on. When the electronic device is powered off, the switching module is turned off, the voltage converting module stops outputting the working voltage, and the control module is disabled. | 2013-11-21 |
20130307520 | MICROELECTRODE ARRAY AND METHOD FOR MODIFYING CARBON NANOTUBE ELECTRODE INTERFACE OF THE SAME ARRAY - The present invention discloses a method for modifying a carbon nanotube electrode interface, which modifies carbon nanotubes used as a neuron-electrode interface by performing three stages of modifications and comprises the steps of: carboxylating carbon nanotubes to provide carboxyl functional groups and improve the hydrophilicity of the carbon nanotubes; acyl-chlorinating the carboxylated carbon nanotubes to replace the hydroxyl functional groups of the carboxyl functional groups with chlorine atoms; and aminating the acyl-chlorinated carbon nanotubes to replace the chlorine atoms with a derivative having amine functional groups at the terminal thereof. The modified carbon nanotubes used as the neuron-electrode interface has lower impedance and higher adherence to nerve cells. Thus is improved the quality of neural signal measurement. The present invention also discloses a microelectrode array, wherein the neuron-electrode interface uses carbon nanotubes modified according to the method of the present invention. | 2013-11-21 |
20130307521 | STRAIN RELIEVING FEATURE FOR PRINTED CIRCUIT BOARD ASSEMBLIES - A system includes a utility meter with a first conductive member and a circuit board coupled to the first conductive member at a first joint. The first joint is disposed along a first elongated strip portion of the circuit board. The first elongated strip portion is configured to flex relative to a main portion of the circuit board in response to thermal expansion or thermal contraction of the first conductive member or a component coupled to the first conductive member. | 2013-11-21 |
20130307522 | ELECTRIC FIELD PROBE - There is provided an electric field probe that can narrow a receiving range to a desired range when measuring a near electric field. An electric field probe includes a rodlike monopole antenna, and a conductive reflective member provided coaxially with the monopole antenna to cover the monopole antenna. The reflective member is open at its bottom in an axial direction of the monopole antenna. | 2013-11-21 |
20130307523 | ANALOG UNIT OF SEQUENCER SYSTEM - An analog unit having a multiple-channel configuration among analog units included in a sequencer system is such that an AC signal as a measurement target, which is captured by a CT sensor, can be directly input to each of a plurality of channels, and the analog unit includes a setting unit that sets, in an internal memory, an abnormality-determination peak current value and an abnormal peak current duration, which are applied to the AC signal as a measurement target, for each of the channels, and a detecting unit that, when the AC signal as a measurement target includes an AC signal that maintains a state where a peak value exceeds the abnormality-determination peak current value for the abnormal peak current duration, detects generation of an abnormal alternating current in each of the channels. | 2013-11-21 |
20130307524 | INFERRING THE PERIODICITY OF DISCRETE SIGNALS - A method for testing a signal comprises obtaining a signal, determining whether the signal has at least one period, measuring that period and providing the measurement as output. A power spectral density estimation can be used for signals having a single period, and an autocorrelation function with slicing can be used in an iterative procedure for finding multiple periods within signals. | 2013-11-21 |