11th week of 2011 patent applcation highlights part 17 |
Patent application number | Title | Published |
20110062873 | Method and arrangement for simulation of high-quality daylight spectra - A method and a multispectral color coordination system simulates high-quality daylight spectra. Light is produced with disposed in groups. Each group emits light at different wavelengths within the daylight spectrum. The wavelength of the light emitted by each LED at different working temperatures and different PWM values is measured. The measurement results for each LED are stored in memory, with assignment to working temperatures and PWM values. The LEDs are actuated at values selected from the memory content, as a function of the light to be emitted by each group. The working temperature of each individual LED chip is constantly measured and compared with the values stored in memory with regard to the current working temperature, and, in case of deviation compensated for by recalculating the spectrum, taking into consideration the PWM values stored in memory for the working temperature, and actuating with these. | 2011-03-17 |
20110062874 | LED calibration systems and related methods - LED calibration systems and related methods are disclosed that use the photo-sensitivity of LEDs to correct for variations between LEDs during initial production and over the lifetime of systems using LEDs. The disclosed systems and methods include methods to set the color or color temperature produced by a group of LEDs during the manufacturing of a device such as a lamp, an LED display, or an LCD backlight, and maintaining such color or color temperature over the operating life of such a device. The methods involve measuring the intensity and/or wavelength of light produced by each LED within a group of LEDs and adjusting an amount of light generated by the LEDs to produce precise color and intensity from the group of LEDs. Two methods that operate some of the LEDs in photovoltaic or photoconductive mode to measure the light intensity produced by other LEDs in the group are presented. The first method uses an additional light source as a reference and determines the light intensity emitted from each LED relative to such reference, while the second method determines the light intensity emitted from each LED relative to each other. | 2011-03-17 |
20110062875 | RESISTIVE BYPASS FOR SERIES LIGHTING CIRCUIT - A resistor bypass circuit for a series lighting circuit includes a plurality of serially connected light sources and a bypass resistor being connected in parallel with at least one of the respective light sources, each respective light source being low wattage and being capable operating on a one hundred percent duty cycle as desired. | 2011-03-17 |
20110062876 | OFFLINE LED DRIVING CIRCUITS - An offline LED driving circuit includes a controller, a shunt regulator, an opto-coupler, and a dimming circuit. The controller generates a switching signal to switch a transformer for providing an output voltage and an output current. The shunt regulator is coupled to an output terminal of the LED driving circuit for providing a feedback signal to the controller via the opto-coupler. The dimming circuit coupled to the shunt regulator modulates the feedback signal at a first feedback level and a second feedback level in response to a dimming signal. The output voltage is respectively regulated at a first output level and a second output level in response to the first feedback level and the second feedback level of the feedback signal. The duty cycle of the switching signal will be varied in a soft-start manner when the feedback signal changes from the second feedback level to the first feedback level. | 2011-03-17 |
20110062877 | OFFLINE LED LIGHTING CIRCUIT WITH DIMMING CONTROL - An offline LED lighting circuit comprises a controller and a dimming circuit. The controller generates a switching signal to switch a transformer for generating an output voltage and an output current at an output terminal of the offline LED lighting circuit to drive LEDs. The dimming circuit is coupled to the controller to modulate the switching signal in response to a dimming signal. A first reference voltage and a second reference voltage of the controller are generated in response to the dimming signal. The switching signal is modulated by the first reference voltage and the second reference voltage. The controller regulates the output voltage at a first output level and a second output level in response to both the first reference voltage and the second reference voltage. The second output level is lower than the first output level. | 2011-03-17 |
20110062878 | BALLAST WITH LAMP FILAMENT DETECTION - A ballast ( | 2011-03-17 |
20110062879 | BALLAST WITH LAMP-DIAGNOSTIC FILAMENT HEATING, AND METHOD THEREFOR - A ballast ( | 2011-03-17 |
20110062880 | BALANCE CIRCUIT AND INVERTER CIRCUIT COMPRISING THE SAME - The present invention provides a balance circuit including: a first balance trans having a primary coil and a secondary coil, the primary coil being connected to an output terminal of a first lamp, and the secondary coil being connected to an output terminal of a second lamp and having a current controlled by the primary coil; and a second balance trans having a primary coil and a secondary coil, the primary coil being connected to an output terminal of a third lamp, and the secondary coil being connected to an output terminal of a fourth lamp and having a current controlled by the primary coil connected to the output terminal of the third lamp, wherein the secondary coil of the first balance trans is connected to the primary coil of the second balance trans, and an inverter circuit including the same. | 2011-03-17 |
20110062881 | LIGHTING DEVICE AND PROJECTOR - A lighting device which supplies power to an electrode of a discharge lamp to turn on the discharge lamp includes: a pulse generating circuit which produces a high-voltage pulse and applies the high-voltage pulse to the electrode; wherein the pulse generating circuit includes an inductor whose output end is connected with the electrode, and a capacitor connected with the output end of the inductor to produce free oscillation of current applied to the electrode in cooperation with the inductor. | 2011-03-17 |
20110062882 | SYSTEMS AND METHODS FOR DRIVING A LIGHT SOURCE - A circuit for driving a light source includes a voltage converter, a switch and a controller. The voltage converter converts an AC input voltage signal to a first rectified AC voltage signal. The voltage converter further generates an average signal proportional to an average voltage level of the first rectified AC voltage signal. The switch is coupled to the light source in series. The controller coupled to the voltage converter and the switch compares the first rectified AC voltage signal with the average signal to generate a pulse signal. The controller further generates a dimming control signal based on the pulse signal to control the switch thereby controlling dimming of the light source. | 2011-03-17 |
20110062883 | System And Apparatus For Cathodoluminescent Lighting - A cathodoluminescent lighting system has a light emitting device having an envelope with a transparent face, a cathode for emitting electrons, an anode with a phosphor layer and a conductor layer. The phosphor layer emits light through the transparent face of the envelope. The system also has a power supply for providing at least five thousand volts of power to the light emitting device, and the electrons transiting from cathode to anode are essentially unfocused. Additional embodiments responsive to triac-type dimmers with intensity and color-changes in response to dimmer control. A power-factor-corrected embodiment is also disclosed. | 2011-03-17 |
20110062884 | REFERENCE SIGNAL GENERATOR AND PWM CONTROL CIRCUIT FOR LCD BACKLIGHT - There are provided a reference signal generator and a PWM control circuit for LCD backlight. The reference signal generator and the PWM control circuit for LCD backlight may be configured to respectively include: a current control unit that controls generation of a variable current sequentially changing; a current generating unit that generates a variable current changing sequentially; and a reference signal generating unit that controls charging until a charged voltage charged by the variable current generated by the current generating unit reaches a first reference voltage level, starts discharging when the charged voltage reaches the first reference voltage level, controls discharging until the charged voltage reaches a second reference voltage level, and generates a triangular wave reference signal that has a frequency buffering interval in which a frequency sequentially changes when the initial driving completion signal or the protection signal is input. | 2011-03-17 |
20110062885 | METHOD OF DRIVING AN UHP GAS-DISCHARGE LAMP - The invention describes a method of driving a gas-discharge lamp ( | 2011-03-17 |
20110062886 | OPEN LOOP LED DRIVING CIRCUIT - The present invention discloses an open loop LED driving circuit, having a turn-on period and a turn-off period, the circuit comprising: a power stage, used to store a magnetic energy supplied from a voltage source during the turn-on period and deliver the magnetic energy to a set of LEDs during the turn-off period; and a control unit, having a turn-off period control terminal coupled to the voltage source, and a channel of which a first terminal is coupled to the power stage and a second terminal is coupled to a reference ground, wherein the channel is switched on at a time according to the voltage of the voltage source to determine the turn-off period. | 2011-03-17 |
20110062887 | DRIVING APPARATUS OF LIGHT EMITTING DIODE AND DRIVING METHOD THEREOF - A driving apparatus of a light emitting diode (LED) and a driving method thereof are provided. In the driving method, when the driving apparatus performs dimming and a duty cycle of a dimming signal is smaller than a predetermination value, outputting time of driving currents are equally allotted in a period, and a magnitude of each driving current is regulated correspondingly. When the driving apparatus performs dimming and the duty cycle of the dimming signal is equal to or greater than the predetermination value, the driving currents are simultaneously output in the period, and the magnitude of each driving current is regulated according to the dimming signal. Therefore, an audio noise and an electromagnetic interference caused by excessive variation of a sum of the driving currents are suppressed. | 2011-03-17 |
20110062888 | Energy saving extra-low voltage dimmer and security lighting system wherein fixture control is local to the illuminated area - Prior applications disclosed power supply transmission voltage resulting in reduced line losses, with further energy conservation via luminous intensity control (dimming) of lamp(s) including LEDs. Additionally, an invertible, convertable luminaire, and upgraded control module design (comparable to a computer mainframe) comprised of function components including, for example, a microcontroller with programmable CPU, multiple LED driver(s), multiple independent lamp control(s), variable ON time segmentation(s) and variable ramp speed(s), voice actuation (s), security system(s), battery charge component(s), voltage drop (current) limiter(s), protection, ammeter(s), volt and watt meter(s); and voids for optional modules including but not limited to: clock timer(s); photocell(s); motion detector(s) of various function(s); push button(s); programming and function display(s); microphone(s); wireless transmitter(s)/receiver(s); fiber optic interconnection(s); remote control(s); integration to personal computer(s) or other central control system(s); speaker(s); camera(s); irrigation control(s); luminaire mountable laser module(s) and beacon(s); battery array(s); transmission voltage double isolation for nominal | 2011-03-17 |
20110062889 | SOLID STATE LIGHTING SYSTEM AND A DRIVER INTEGRATED CIRCUIT FOR DRIVING LIGHT EMITTING SEMICONDUCTOR DEVICES - The present invention relates to a solid state lighting system comprising at least one light emitting semiconductor device (LEDstr), at least one driving means (LEDdr) for driving a predetermined current through the at least one light emitting semiconductor device (LEDstr). The lighting system furthermore comprises a first voltage supplying unit (PS | 2011-03-17 |
20110062890 | DRIVE CIRCUIT - The invention is directed to testing breakdown voltage characteristics of a plurality of output transistors in a batch in a drive circuit instead of measurement using probe needles. A drive circuit includes output transistors made of high breakdown voltage P-channel type MOS transistors, switching control circuits, output terminals, diodes and a control terminal on a semiconductor die. The diodes are made of high breakdown voltage P-channel type MOS transistors in which the source and gate are connected. The anodes of the diodes are connected to the drains of the corresponding output terminals, respectively. The cathodes of the diodes are commonly connected to the control terminal through a wiring. | 2011-03-17 |
20110062891 | LIGHT-EMITTING DEVICE - This disclosure discloses a light-emitting device comprising a substrate; and a plurality of rectifying units, comprising a first rectifying unit and a second rectifying unit, formed on the substrate for receiving and regulating an alternating current signal into a direct current signal. Each of the rectifying units comprises a contact layer and a schottky metal layer. The light-emitting device further comprises a plurality of light-emitting diodes receiving the direct current signal; and a first terminal provided on the substrate and covering the contact layer of the first rectifying unit and the schottky metal layer of the second rectifying unit. | 2011-03-17 |
20110062892 | DRIVING DEVICE FOR A LIGHT EMITTING DIODE CIRCUIT AND RELATED LIGHTING DEVICE - A driving device for an LED circuit includes a power receiving terminal, a capacitor, and a light adjusting unit. The power receiving terminal is coupled to a switch for receiving a DC power source that supplies for the LED circuit and the driving device via the switch. The capacitor is coupled to the power receiving terminal, and is utilized for storing energy. The light adjusting unit is coupled to the power receiving terminal and the capacitor, and is utilized for generating a control signal according the status of the switch when a voltage on the capacitor decreases and does not decrease below a first threshold voltage, for adjusting light intensity of the LED circuit. | 2011-03-17 |
20110062893 | LIGHTING DEVICE, LIGHTING CONTROL DEVICE, AND PROJECTOR - A lighting device which supplies power to an electrode of a discharge lamp to turn on the discharge lamp, includes: a converting circuit which converts inputted direct current into alternating current; a pulse generating circuit which produces a high-voltage pulse from the alternating current received from the converting circuit and applies the high-voltage pulse to the electrode; and a trigger circuit which is disposed between the converting circuit and causes the pulse generating circuit to apply the high-voltage pulse to the electrode, wherein the trigger circuit allows the pulse generating circuit to apply the high-voltage pulse to the electrode in accordance with a drive frequency of the converting circuit. | 2011-03-17 |
20110062894 | COLD CATHODE FLUORESCENT LAMP DRIVING CIRCUITS AND ASSOCIATED METHODS OF CONTROL - Methods and circuits for CCFL driving circuit control are disclosed according to various embodiments of the present disclosure. In certain embodiments, the methods and circuits for CCFL driving circuit control provide a control signal for regulating both the duty ratio and frequency of the switching control signal that controls the CCFL driving circuit. External components for control loop compensation and frequency sweeping rate, and/or striking frequency setting may also be utilized. | 2011-03-17 |
20110062895 | Circuit for driving an infrared transmitter LED with temperature compensation - Systems and methods to achieve a circuit for driving one or more infrared transmitter LEDs with temperature compensation have been disclosed. In a preferred embodiment of the invention the circuit has been applied for a rain sensing system. The junction temperature of the LED is measured and compensated by adjusting the driver current of a voltage-to-current converter driving the LED. The LED junction temperature is measured by comparing the difference in the forward diode voltage at different current densities. This voltage difference is extracted when switching the drive currents between different constant values. The measurement results are converted to digital values, which are used by a buffered dual ladder resistive DAC structure to adjust the drive current to temperature variations. | 2011-03-17 |
20110062896 | DIGITAL WIRING DEVICE - A digital wiring device including a user interface panel, a digital display, and a paddle including a transparent portion to reveal the digital display and an opaque portion to cover the user interface panel. The paddle rotates from a first closed position to a second open position. A digital “schedule-at-a-glance” may be provided so that a user can quickly assess a schedule of events. The digital wiring device may include a back light to illuminate the digital display. The paddle may be operatively associated with the back light. A battery may provide an electrical current to power the digital wiring device in a battery backup mode, and the back light may be disabled based on the mode. The user interface panel may be used to schedule events or otherwise configure the digital wiring device. | 2011-03-17 |
20110062897 | Lighting structure - The lighting structure of the present invention can be installed in a cupboard, a wardrobe, a filing cabinet or another structural object requiring an auxiliary light source. The lighting structure comprises: a body provided with a lamp and an electrical circuit; and a base adapted to be installed on the structural object and joined with the body. The electrical circuit comprises a vibration sensing element, a control element and an electric power supplying portion. The electric power supplying portion is configured to supply electric power necessary for operation of the electrical circuit. When the lighting structure is vibrated, the vibration sensing element outputs an electrical signal to the control element so that the control element chooses to turn on or off the lamp correspondingly. | 2011-03-17 |
20110062898 | DUAL ELEMENT SWITCHED ELECTRON GUN - The invention provides an apparatus and method of switching more than one bias voltage within an electron beam tube in order to achieve electron beam cutoff. The invention is particularly useful for high-perveance electron tubes in which a large change in focus-electrode-to-cathode or anode-cathode voltage might otherwise be needed to achieve cutoff. In one embodiment of the invention, the cathode and anode bias voltages are both switched by magnitudes well within the capabilities of standard high-voltage switches to achieve beam cutoff. | 2011-03-17 |
20110062899 | HALL EFFECT THRUSTER WITH COOLING OF THE INTERNAL CERAMIC - The invention relates to the field of Hall effect thrusters. The invention provides a Hall effect thruster having a discharge channel of annular shape extending along an axis, the discharge channel being defined by an outer wall of annular shape and an inner wall of annular shape situated inside the space defined by the outer wall, a cathode situated outside the discharge channel, and an injector system situated at the upstream end of the discharge channel and also forming an anode, the downstream end of the discharge channel being open, wherein the thruster includes a heat sink device comprising a heat sink in contact with the inner wall and of thermal conductivity that is greater than the thermal conductivity of the inner wall, the heat sink being a sleeve and the heat sink device being suitable for discharging heat from the inner wall to the outside of the thruster so as to reduce the temperature difference between the inner wall and the outer wall. | 2011-03-17 |
20110062900 | IMAGE FORMING APPARATUS, MOTOR CONTROL APPARATUS, AND MOTOR CONTROL METHOD - An image forming apparatus includes an engine unit to perform an image forming job, an engine control unit to control operation of the engine unit, a plurality of brushless direct current (BLDC) motors to operate the engine unit, a communication interface unit to receive a digital control command for the plurality of brushless DC motors from the engine control unit, a sensor unit to sense operation information of the plurality of brushless DC motors, an operation signal unit to generate an operation signal to control the plurality of brushless DC motors, and a speed control unit to control operation of the operation signal unit according to the received digital control command and sensing result of the sensor unit. | 2011-03-17 |
20110062901 | Arrangement of Stator Modules in a Linear Motor - A linear motor is disclosed, which has a stator and at least one rotor, the stator having at least two stator modules. Each stator module has a coil arrangement and, seen in longitudinal extension of the respective stator module, at least at one end, a displacement sensor. Each stator module is disposed along a travel path of the respective rotor in an area of the respective stator module. Each displacement sensor has a detection range, within which it can detect a rotor, as long as the latter is located at least partially in the detection range. Each coil arrangement has an interaction range, within which, in case of energizing, the coil arrangement comes into interaction with the rotor and urges the latter in a driving direction, as long as the rotor is located with at least one portion in the interaction range. The at least two stator modules and the at least one rotor are disposed such that, at all times, a portion of the at least one rotor is located at least in the detection range of a displacement sensor and another portion of this rotor at least in the interaction range of a coil arrangement of the at least two stator modules. | 2011-03-17 |
20110062902 | METHOD AND APPARATUS FOR LOW SPEED PERMANENT MAGNET MOTOR OPERATION - Methods and apparatus are provided for startup of a permanent magnet alternating current (AC) motor. The method comprises the steps of detecting startup of the permanent magnet AC motor; detecting a mechanical oscillation of the permanent magnet AC motor when startup of the permanent magnet AC motor is detected; and, in response to detection of the mechanical oscillation of the permanent magnet AC motor when startup is detected, suppressing the mechanical oscillation of the permanent magnet AC motor. | 2011-03-17 |
20110062903 | MOTOR CONTROL DEVICE AND ELECTRICAL EQUIPMENT PROVIDED WITH THE SAME - A motor control device controlling an inverter to control an electric motor, includes a plurality of function sections, a voltage command generating section generating a d-axis voltage command and a q-axis voltage command, a voltage operational processing section, an input current operation section, a speed information generating section estimating a rotational speed of the motor based on at least one of a motor constant, a positional information generating section delivering positional information about a rotor, a processor executing control software set by a user, a manufacturer or the like. At least a part of the function sections are configured by hardware. The function section configured by the hardware is given at least one parameter retaining section. The parameter retaining section is configured so as to be readable/writable on the processor. The function section is configured by the hardware so as to be operated in a predetermined sequence. | 2011-03-17 |
20110062904 | ALTERNATING CURRENT MOTOR CONTROL SYSTEM - An alternating current motor control system includes a three-phase synchronous alternating current motor, a rotational position sensor, and a motor control portion. The three-phase synchronous alternating current motor includes a rotor. The rotational position sensor detects a rotational position of the rotor. The motor control portion digitizes a detection signal of the rotational position sensor into a rotational position signal with a resolution that a quotient when an electrical angle of 360 degrees is divided by a multiple of 3 is set to a quantization unit. The motor control portion performs a rectangular wave control of applying a rectangular wave voltage based on the rotational position signal so that an energizing current of the three-phase synchronous alternating current motor is commutated every electrical angle of 60 degrees. | 2011-03-17 |
20110062905 | MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING SYSTEM - A motor control device is configured in such a manner that a current detection circuit and an exciting circuit for a motor resolver share one grounding wire. A microcomputer that serves as a current detector sets a phase of an exciting current in such a manner that values of an excitation noise superimposed on an output voltage of the current detection circuit at respective timings (L | 2011-03-17 |
20110062906 | DEVICE AND METHOD FOR CONTROLLING MOTOR - A motor controlling device is provided that controls a brushless motor having a plurality of phases based on magnetic pole signals output by a plurality of magnetic pole signal output sections each corresponding to one of the phases. The motor controlling device includes an abnormality determining section, a signal generating section, and a motor controlling section. The abnormality determining section determines whether a magnetic pole signal output by each magnetic pole signal output section is an abnormal magnetic pole signal. When the abnormality determining section determines that at least one of the magnetic pole signals is an abnormal magnetic pole signal, the signal generating section generates a simulated signal corresponding to the abnormal magnetic pole signal based on the normal magnetic pole signals other than the abnormal magnetic pole signal and the rotational state of the brushless motor. The motor controlling section controls the brushless motor based on the simulated signal and the normal magnetic pole signals when the signal generating section generates the simulated signal. | 2011-03-17 |
20110062907 | APPARATUS AND METHOD FOR DRIVING SENSORLESS MOTOR - An apparatus and a method for driving a sensorless motor are described and shown in the specification and drawings, where the method includes steps as follows. First, a control signal is acquired, where the control signal has information of a predetermined rotational speed. Next, energy is supplied and progressively increased to the sensorless motor, so as to rotate a rotor of the sensorless motor. Then, a position of the rotor is detected. Finally, the energy is gradually regulated so that the sensorless motor is maintained at the predetermined rotational speed. | 2011-03-17 |
20110062908 | CONTROLLER OF MOTOR - In configuring a power conversion device to drive an alternating-current motor for an electric vehicle, the device is configured in a small size, light weight, and at a low cost, while avoiding size increase of a cooler. A current-command generating unit provided in a controller to control the alternating-current motor is adjusted not to increase a loss of an inverter in a state that the inverter as a main circuit within the power conversion device is outputting a maximum voltage that can be generated at an output voltage of a direct-current power source and when a torque command is reduced, and outputs a current command to cause the alternating-current motor to generate a torque based on the torque command. | 2011-03-17 |
20110062909 | POSITION SENSORLESS CONTROL OF PERMANENT MAGNET MOTORS - Methods and apparatus are provided for sensorless control of a permanent magnet motor. The method includes the step of determining a sensorless position signal and a sensorless speed signal in a torque-speed plane in response to phase currents corresponding to currents on one or more of the plurality of phases. | 2011-03-17 |
20110062910 | Method of Driving DC Motor and Related Circuit for Avoiding Reverse Current - A motor driving method for driving a direct-current (DC) motor, designed for avoiding a reverse current induced by the Back Electromotive Force (BEMF), includes providing a driver circuit for driving the DC motor; comparing a signal level of a terminal of the DC motor and a predetermined voltage value to produce a comparing result; and controlling a specific lower gate switch to avoid the occurrence of a reverse current of the DC motor according to the comparing result. | 2011-03-17 |
20110062911 | PORTABLE CHARGING APPARATUS - A portable charging apparatus for electrically charging one or more portable battery operated light units, comprising a container having one or more receiving means for receiving one or more portable battery operated light units, electricity supply connection means for electrically connecting with the one or more portable battery operated light units, and electricity supply regulating means. | 2011-03-17 |
20110062912 | ENERGY AND POWER MANAGEMENT INTEGRATED CIRCUIT DEVICE - Provided is an energy and power management integrated circuit (IC) device. The energy and power management IC device includes a plurality of energy conversion devices for harvesting energy from respective energy conversion sources and converting the energy into electric energy, an energy management IC (EMIC) for converting the electric energy converted by the energy conversion devices into stable energy, a storage device for storing the energy or power converted by the EMIC, a power management IC (PMIC) for receiving and distributing the power stored in the storage device, and a plurality of output load devices for consuming the power distributed by the PMIC. Accordingly, it is possible to harvest energy in an environmentally friendly way and semi-permanently use the energy without changing a battery. | 2011-03-17 |
20110062913 | METHOD AND APPARATUS FOR CHARGING A BATTERY - A method and apparatus for identifying different types of energy sources used to charge a battery by receiving energy from at least one of the different types of energy sources at input terminals, identifying the type of energy source, and selecting a mode for charging the battery based on the type of energy source identified. A method and apparatus for protecting against certain energy sources used to charge a battery is also disclosed. | 2011-03-17 |
20110062914 | SYSTEM AND METHOD FOR EFFICIENT WIRELESS CHARGING OF A MOBILE TERMINAL - Disclosed is a method and apparatus for efficient wireless charging of a mobile terminal. The method includes detecting the mobile terminal by a charging apparatus, receiving a unique identifier of the mobile terminal from the mobile terminal and determining if the mobile terminal is a rechargeable device, when the mobile terminal is a rechargeable device, applying a direct voltage to a first coil of the charging apparatus and arranging the charging apparatus and the mobile terminal, and terminating an application of the direct voltage and then applying an alternating voltage, to supply charging power required for the mobile terminal. | 2011-03-17 |
20110062915 | BATTERY CELL VOLTAGE BALANCING DEVICE - Disclosed herein is a battery cell voltage balancing device for connecting two or more battery cells to one another in parallel so as to minimize a voltage difference between the respective battery cells, the battery cell voltage balancing device including an insulative main body having partitions, between which the two or more battery cells are mounted, respectively, configured in a structure in which the partitions are open upward, terminal connection parts disposed at opposite ends of the insulative main body for connecting cathodes and anodes of the battery cells mounted at the insulative main body to cathodes and anodes of neighboring battery cells mounted at the insulative main body, and an interval adjustment unit for variably adjusting an interval between the partitions in a state in which the battery cells are mounted between the partitions to achieve secure mounting of the battery cells between the respective partitions and electrical connection of electrode terminals of the respective battery cells to the terminal connection parts. | 2011-03-17 |
20110062916 | MOVABLE MAGNETICALLY RESONANT ANTENNA FOR WIRELESS CHARGING - Exemplary embodiments are directed to wireless power. A method may include reorienting at least one transmit antenna to reduce orthogonality with a receive antenna of at least one chargeable electronic device in response to receiving the at least one electronic device in a holder. The method may further include wirelessly transferring power from the at least one transmit antenna to the receive antenna. | 2011-03-17 |
20110062917 | BATTERY VOLTAGE EQUALIZER CIRCUIT AND METHOD FOR USING THE SAME - A battery voltage equalizer circuit for equalizing battery voltages among a plurality of battery cells in a serial connection is disclosed. The battery voltage equalizer circuit includes a battery voltage equalizer unit having a plurality of equalizer parts, wherein each equalizer part, coupled to a positive terminal and a negative terminal of a corresponding battery cell, is conducted with an equalization current upon a receipt of an equalization signal, and a battery voltage detector unit, coupled to the positive and negative terminals of the plurality of battery cells, generates the equalization signal so as to conduct the battery voltage equalizer unit as long as a voltage of any one of the battery cells reaches an equalization voltage. | 2011-03-17 |
20110062918 | Method and device for monitoring the operating state of a battery - In a method for monitoring the operating state of a battery, preferably a Ni metal hydride or a Li-ion battery, formed of consisting of one or several interconnected battery cells, during the charging and discharging of the battery a low-frequency alternating current signal or voltage signal is applied to the battery. The resulting voltage or current signal is measured and the operating state of the battery or its battery cells is determined from at least one change in the harmonic distortion content of the measured voltage or current signal. | 2011-03-17 |
20110062919 | DISCHARGE CIRCUIT - A discharge circuit includes an OC (Optical Coupler), a capacitor, an NPN-type transistor, and a discharge unit. The discharge circuit is parallel connected to a PFC (power factor corrector) circuit which includes a filter capacitor. The discharge unit has a MOSFET and a discharge resistor. A drain of the MOSFET is connected to a first terminal of the PFC circuit via the discharge resistor, a gate thereof is connected the anode of the capacitor, and a source thereof is connected to ground. | 2011-03-17 |
20110062920 | POWER SUPPLY, TEST APPARATUS, AND CONTROL METHOD - A power supply that outputs an output voltage corresponding to a specified voltage through an output terminal includes a plurality of switches that selects which of a high voltage and a low voltage is coupled to the output terminal, a multi-phase pulse width modulating section that controls a pulse width of the high voltage output from each of the plurality of the switches to cause the output voltage to approach the specified voltage, and a changing section that changes a voltage difference between the high voltage and the low voltage according to the specified voltage or the output voltage. | 2011-03-17 |
20110062921 | VOLTAGE REGULATOR - Provided is a voltage regulator capable of securely preventing a reverse current from an output terminal ( | 2011-03-17 |
20110062922 | LOW DROPOUT REGULATOR - The present invention relates to a low dropout regulator, and more particularly to a low dropout regulator without load capacitor and ESR (equivalent series resistance) designed in response to the discharge curve of a Li-ion battery, includes an input terminal, a reference circuit, a power transfer element, a level regulating device, a regulating circuit, and a first N-type MOSFET. The regulating circuit detects a load change at an output terminal, amplifies the load change, and couples it to the level regulating device. The level regulating device receives and boosts a received signal and transmits the received signal to the power transfer element, so as to achieve the effect of controlling the power of a power supply. | 2011-03-17 |
20110062923 | SWITCHING POWER SUPPLY CIRCUIT - A switching power supply circuit includes a power circuit, a switching circuit and a load. The switching circuit includes a first filter module, a power processing unit, a stability module, and a second filter module. The first filter module receives a voltage signal from the power circuit and sends a filtered first voltage signal to the power processing unit; the power processing unit outputs a second voltage signal, the stability module stabilizes the second voltage signal and sends a third voltage signal to the second filter module; the second filter module filters the third voltage signal and sends a drive voltage to the load. In response to the second voltage signal instantaneously changing from high to low or low to high, during the change in current, power of the second voltage signal is stored in the stability module and released through the second filter module. | 2011-03-17 |
20110062924 | SWITCHING APPARATUS AND CONTROL SIGNAL GENERATOR THEREOF - A switching apparatus has a switch and a control signal generator. The control signal generator is configured to generate a control signal applied to the switch to control the operations of turning on and off of the switch. The control signal generator has an inverter and a regulating circuit. The input end of the inverter receives an input signal, and the output end of the inverter outputs the control signal. The regulating circuit has a switching unit and a capacitor. A first end of the switching unit is coupled to the output end of the inverter, a second end of the switching unit is coupled to a first system voltage, a third end of the switching unit is coupled to a first end of the capacitor, and a second end of the capacitor is coupled to a second system voltage. | 2011-03-17 |
20110062925 | VOLTAGE RANGE DETERMINATION CIRCUIT AND METHODS THEREOF - A voltage range determination circuit may include an object voltage generating unit that generates an object voltage corresponding to a scaled-down voltage of an input voltage based on the input voltage, a selection voltage generating unit that generates a first selection voltage and a second selection voltage that is greater than the first selection voltage based on a reference voltage, a comparison voltage selecting unit that selects one of the first selection voltage and the second selection voltage as a comparison voltage based on an output signal, and an output signal generating unit that compares the object voltage with the comparison voltage to generate the output signal. | 2011-03-17 |
20110062926 | SYSTEM AND METHOD FOR CONTROLLING A VOLTAGE SUPPLY - A system, voltage supply circuit, control unit for a voltage supply circuit, and method of controlling a voltage supply circuit are disclosed. For example, a system is disclosed that comprises at least one electronic circuit and a voltage supply unit coupled to an input of the at least one electronic circuit. The voltage supply unit includes a power unit to supply a voltage to the at least one electronic circuit and a control unit to control an operating mode of the power unit, an output of the control unit coupled to an input of the power unit. The control unit includes a mode selector to select the operating mode of the power unit, coupled to at least a first output of the power unit, an amplifier coupled to the at least a first output of the power unit, a compensation circuit, and a first switching unit coupled to the mode selector and the compensation circuit, to couple the compensation circuit to the amplifier if a selected operating mode of the power unit is a first mode. | 2011-03-17 |
20110062927 | SWITCHING POWER SUPPLY DEVICE, SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND POWER SUPPLY DEVICE - A switching power supply device performs a stable operation with fast response for a semiconductor integrated circuit device. A capacitor is provided between the output side of an inductor and a ground potential. A first power MOSFET supplies an electric current from an input voltage to the input side of the inductor. A second power MOSFET turned on when the first power MOSFET is off allows the input side of the inductor to be of a predetermined potential. A first feedback signal corresponding to an output voltage obtained from the output side of the inductor and a second feedback signal corresponding to an electric current flowed to the first power MOSFET are used to form a PWM signal. The first power MOSFET has plural cells of a vertical type MOS-construction. | 2011-03-17 |
20110062928 | SWITCHING POWER SUPPLY CONTROLLER WITH HIGH FREQUENCY CURRENT BALANCE - A controller for a multi-phase switching power supply shuffles the sequence of the phases in response to a load transient to prevent synchronization of one or more phases with high-frequency load transients. The sequence may be shuffled by varying the frequency and/or sequence of the switching control signals to introduce a random variation in the phases. | 2011-03-17 |
20110062929 | FEEDBACK CONTROL OF A DC/DC POWER CONVERTER - A current mode power conversion system and method are described that provide a stable output voltage and a maximum-limited output current to a load. The system comprises:
| 2011-03-17 |
20110062930 | VARYING OPERATION OF A VOLTAGE REGULATOR, AND COMPONENTS THEREOF, BASED UPON LOAD CONDITIONS - A method for operating a voltage regulator controller, for use in a voltage regulator including coupled inductors, is provided as follows. A first signal is generated for driving a first switch of the voltage regulator. A second signal is generated driving a first switch of the voltage regulator. The voltage regulator determines whether a light-load condition exists. Upon determining the existence of a light-load condition, adjusting the phase difference between said first and second signals so that the first and second signals are approximately in-phase. | 2011-03-17 |
20110062931 | DC-DC CONVERTER - Provided is a DC-DC converter including a soft start circuit capable of prolonging a soft start time without increasing a capacitance used in the soft start circuit. A soft start is implemented by gradually increasing a limiting level of an inductor current or a reference voltage. The soft start time is adjusted by varying a frequency of CLOCK signals supplied to switch circuits. The soft start time may be prolonged without increasing a chip size because the capacitance does not need to be increased to prolong the soft start time. | 2011-03-17 |
20110062932 | DC/DC CONVERTER HAVING A FAST AND ACCURATE AVERAGE CURRENT LIMIT - In order to overcome the three main obstacles to obtaining a fast and accurate average current limit in a DC/DC converter, three distinct improvements are provided which can work in concert to achieve the goal. Each of the three parts comprises significant new improvements, and their use together to create an average current limit is also believed to be novel. The first improvement relates to providing a bias signal control configured to apply a variable DC bias signal to the compensation ramp signal generated in the DC/DC converter so that the compensating ramp signal is biased to zero at the end of each ON-time for each cycle so that the peak current limit is independent of the duty cycle of the pulse width modulation signal during current limit conditions. A second improvement relates to modulating the clamp voltage that establishes the peak current limit as a function of ripple of the inductor current for each cycle of the pulse width modulation signal so as to reduce or cancel the effect of the inductor ripple current on the average output current during current limit conditions. The third improvement relates to adjusting the frequency of the pulse width modulation signal during current limit conditions as a function of both the input voltage and the output voltage of the DC/DC converter. | 2011-03-17 |
20110062933 | FULL CYCLE AC POWER CONTROL - A method includes selectively applying full cycles of AC power to a load. The cycles may have first and second states such as full on and full off states. The cycles may be arranged in groups in a pattern. The pattern may have a length that is shorter than a perceptible response time of the load. Different patterns may be used for different power levels. | 2011-03-17 |
20110062934 | Circuit Board, Method for Determining a Current Space Vector, Converter, Circuit Board and Series of Converters - In circuit board for a converter, including control electronics, the circuit board includes a device for current detection, the device respectively having at least two measuring amplifier circuits, only the output of one of the measuring amplifier circuits being supplied as the detected current value to the control electronics of the converter. | 2011-03-17 |
20110062935 | ENERGY RECOVERY CIRCUIT - An energy recovery circuit receives and stores energy associated with switching transitions in a power converter having a first switch and a second switch configured to be operated to selectively apply a voltage source to an output load. The energy recovery circuit includes an inductive element, a diode, and a capacitive element. The inductive element receives at least a portion of electrical current flowing through one of the first switch and the second switch. The at least a portion of the electrical current flows through the diode to charge the capacitive element with a voltage. The energy recovery circuit includes a recovery power converter to transfer the voltage from the capacitor. | 2011-03-17 |
20110062936 | AC POWER SWITCHING MODULE - An AC power switching module comprising: AC current input and output means; switching means located between said input and output means for selectively blocking or passing said AC current; a switch controller arranged to provide an output signal to the switching means to control the state of the switching means; a primary control for setting the output of the switch controller; and a secondary control for setting the output of the switch controller, wherein said secondary control comprises a current-dependent circuit dependent on the AC current. | 2011-03-17 |
20110062937 | Low Voltage Bandgap Voltage Reference Circuit - A temperature compensated low voltage reference circuit can be realized with a reduced operating voltage overhead and reduced spatial requirements This is accomplished in several ways including integrating one or more bipolar junction transistors into a current differencing amplifier and reducing the number of components required to implement various voltage reference circuits. All of the reference circuits may be constructed with various types of transistors including DTMOS transistors. | 2011-03-17 |
20110062938 | BANDGAP VOLTAGE REFERENCE WITH DYNAMIC ELEMENT MATCHING - A voltage reference source is provided that includes a Brokaw bandgap core comprising a first set of transistors, a second set of transistors coupled to the first set of transistors and serving as load devices to the first set of transistors, and a dynamic element matching circuit coupled to the first and second sets of transistors so as to cancel the offset and noise produced by a selective number of the second set of transistors. | 2011-03-17 |
20110062939 | CONTROLLING POWER USAGE BY AT LEAST ONE ELECTRONIC APPARATUS - In a method for controlling power usage by at least one electronic apparatus, a power regulating device having a plurality of integrated power and data connectors is provided. In addition, the at least one electronic apparatus is connected to an integrated power and data connector of the power regulating device with an integrated power and data cord having operational power lines and a data line. Data from the power regulating device is communicated to the at least one electronic apparatus and/or data is received in the power regulating device from the at least one electronic apparatus through the data line, in which the data contains information pertaining to an impending change in power supplied to the at least one electronic apparatus through the operational power lines from the power regulating device. | 2011-03-17 |
20110062940 | High Efficiency Charge-and-Add Adjustable DC-DC Converter - A charge-and-add DC-DC voltage converter design using a switch network that toggles between two states, either simultaneously charging a flying capacitor (one or any number) or creating a DC voltage on the output capacitor by connecting all flaying capacitors in series thus adding the input voltage to remaining voltages on flying capacitors after they were charged. A pulse generator delivers a train of pulses to toggle the switch network. Depending on the applications, the train of pulses can be continuous when a fixed unregulated voltage must be delivered, or a defined number of pulses when voltage (power) surge is to be produced. The charge-and-add converters should be capable of delivering a regulated output voltage, and in this case, pulse-width modulation (PWM) or pulse frequency modulation (PFM) can be used. | 2011-03-17 |
20110062941 | DETECTOR, PHYSICAL QUANTITY MEASURING DEVICE, AND ELECTRONIC APPARATUS - A detector is provided that detects a detection signal corresponding to a driving vibration, which excites a vibrator in an oscillation loop, and a physical quantity to be measured. The detector includes an amplifying circuit, a synchronous detection circuit, an impedance conversion circuit, a first low pass filter, and a second low pass filter, wherein each of the first and second low pass filters is formed by a switched capacitor filter circuit, a gain of the first low pass filter is different from that of the second low pass filter. | 2011-03-17 |
20110062942 | Measuring device with a measuring- and operating electronics for monitoring a measurement signal - Measuring device with a measuring- and operating electronics ( | 2011-03-17 |
20110062943 | TIMING DETECTION DEVICE - A timing detection device includes a draw back amount acquiring unit and a detecting unit. The draw back amount acquiring unit is configured to acquire a draw back amount of a received signal with respect to a peak value of the signal. The detecting unit is configured to detect the timing at which the draw back amount acquired by the draw back amount acquiring unit has exceeded a constant value as the timing at which a value of the signal is switched. | 2011-03-17 |
20110062944 | FARADAY OPTICAL CURRENT SENSOR ARRANGEMENT - A Faraday optical current sensor arrangement for measuring the current through a power line comprises a Faraday optical current sensor ( | 2011-03-17 |
20110062945 | DEVICE FOR MEASURING A CURRENT FLOWING IN A CABLE - An exemplary embodiment relates to a measuring device for measuring a current flowing in a first cable. The measuring device includes a measuring shunt in the form of a plate connected in series with the first cable and associated with a measuring electronic card connected to a data transmission cable. The measuring shunt further includes a measuring portion of resistive alloy coupled to connection portions on either side of the measuring portion. The connection portions are integrally formed with the measuring portion, and the first cable is secured to at least one of the connection portions of the measuring shunt. | 2011-03-17 |
20110062946 | Eddy Current Probes Having Magnetic Gap - An eddy current probe uses magnetic gap The probe has a small size; and coil number in the probe is reduced. Hence, the probe can move easily inside and outside a tube and detect an end of the tube as close as possible. | 2011-03-17 |
20110062947 | Method and system for locating a person, recording medium for this method - This method for localizing a person in surroundings equipped with fixed electrical appliances comprises: | 2011-03-17 |
20110062948 | System and Method for Measuring Movement of a Component from Rings Magnetized in a Magnetically Hard Layer - A position-sensing system includes a first component (e.g., a cylinder) and a second component (e.g., a piston rod) movably coupled to the first component for movement with respect thereto. A magnetically hard layer on the second component provides a recording medium. Regions of the magnetically hard layer are magnetized as magnetized rings around the second component. Magnetic-field sensors are coupled to the first component in proximity of the magnetically hard layer on the second component to sense the rings of magnetized regions. Each of the magnetic field sensors senses flux from each of the rings of magnetized regions as the second component is moving with respect to the first component and, in response to sensing the rings of magnetized regions, generates signals used to determine position of the second component. | 2011-03-17 |
20110062949 | SHIELDED POSITION SENSOR FOR TRANSLATIONALLY MOVING PARTS - A sensor is disclosed for monitoring a part which can move translationally relative to a sensor with reference to its position on the axis of motion. This part is for example a piston in a cylinder which is equipped with a sensor. The sensor can be actuated by means of a magnet which is oriented in the direction of motion with respect to the north and south pole and which is located on the movable part. The sensor has three reed contacts which are aligned in parallel and of which the first and the second reed contact are located in one plane and parallel next to one another with their lengthwise axes, by which they can be actuated almost at the same time by the magnetic field of the magnet which is located on the movable part. The third reed contact is located at a distance to the plane of the first and the second reed contact. This sensor with the first two reed contacts is mounted facing the actuating magnet. This arrangement has the advantage that an external magnetic field always actuated the third reed contact as well, if it can actuate the first two reed contacts. Then the sensor indicates an error report or an unsafe position, but never a safe position of the movable part. | 2011-03-17 |
20110062950 | Measuring Method, Sensor Arrangement and Method for Mounting a Measuring System - In a measurement method, a plurality of magnetic field sensors (MS | 2011-03-17 |
20110062951 | System to Screen for Longitudinal-Seam Anomalies - Embodiments of the present invention provide systems to detect crack-like features in pipeline welds using magnetic flux leakage data and pattern recognition. A screening process, for example, does not affect or change how survey data is recorded in survey tools; only how it is analyzed after the survey data is completed. Embodiments of the present invention can be used to screen for very narrow axial anomalies in the pipeline welds, and may also be used to predict the length of such anomalies. Embodiments of the present invention also produce a listing of the anomalies based on their relative signal characteristics. | 2011-03-17 |
20110062952 | METHOD FOR ESTIMATING THE WEIGHT OF THE CONTENTS OF A HOUSEHOLD APPLIANCE - A method for estimating the value of the weight of the contents of the oscillating assembly of an electronically controlled household appliance is provided. The oscillating assembly is connected to a frame by a suspension system having a damper. The damper includes at least two mechanical elements adapted to move reciprocally, a magnetic element which detects reciprocal motion, depending upon the distance between the two elements, the magnetic sensor generates an electrical signal. A reading of an initial value of an electric parameter, is taken when the oscillating assembly is empty. A mathematical function is identified on the basis of the initial value and of a plurality of predetermined parameters, which relate the electrical parameter to the weight of the contents. A second reading is taken when contents have been loaded in, and the value of the weight of the contents is estimated by using the mathematical function and electric parameters. | 2011-03-17 |
20110062953 | NONDESTRUCTIVE TESTING SYSTEM FOR STEEL WORKPIECE - A nondestructive testing system for testing the strength of a gear ( | 2011-03-17 |
20110062954 | A PROBE FOR INSPECTING THE SURFACE OF A CIRCUMFERENTIAL SLOT IN A TURBOJET DISK BY MEANS OF EDDY CURRENTS - A probe for eddy current monitoring of the surface of a circumferential slot formed in a turbojet disk. The probe includes a stem fastened to a support and a first multi-element sensor constrained to move with the stem and configured to be inserted into the circumferential slot to perform the inspection, and a second multi-element sensor. The two multi-element sensors are disposed back to back, and the stem of the probe is mounted to pivot about its own axis to enable the two multi-element sensors to be inserted in the slot. | 2011-03-17 |
20110062955 | MULTIFERROIC ANTENNA/SENSOR - A multiferroic antenna and sensor where the sensor includes a multiferroic stack of multiple connected multiferroic layer-pairs, each multiferroic layer-pair comprising an alternating layer of a magnetostrictive material and a piezoelectric material bonded together enabling a high signal sensitivity, a magnetic field of an incident signal causing mechanical strain in the magnetostrictive material layers that strains adjacent piezoelectric material layers producing an electrical voltage in each multiferroic layer-pair proportional to the incident signal. An output of the multiferroic stack comprises the electrical voltage amplified proportional to a total number of multiple connected multiferroic layer-pairs in the multiferroic stack. | 2011-03-17 |
20110062956 | MEMS DEVICE WITH SUPPLEMENTAL FLUX CONCENTRATOR - A microelectromechanical modulating magnetic device comprising: a base; a magnetic transducer that provides an output in response to a magnetic field associated with the base; at least one movable flux concentrator positioned to move relative to the magnetic transducer; at least one flux collector positioned to collect flux for transfer onto at least one movable flux concentrator; which transfers the magnetic flux to the magnetic transducer for detection and measurement purposes; support structure for enabling the at least one movable flux concentrators to move within a predetermined frequency range; a power source for causing the movable flux concentrators to move at a frequency within the predetermined frequency range; whereby magnetic flux may enter through the flux collector, pass through the at least one movable flux concentrator for transfer to the magnetic transducer, and due to the movement of the movable flux concentrator, the signal outputted from the transducer is modulated. | 2011-03-17 |
20110062957 | OPTICALLY INTEGRATED BIOSENSOR BASED ON OPTICALLY DETECTED MAGNETIC RESONANCE - An optically integrated magnetic biosensor includes an optically detected magnetic resonance (ODMR) center and a fluidics layer configured to contain a solution comprising analytes, the fluidics layer being disposed over the ODMR center. A light source which generates incident light excites electrons within the ODMR center from a ground state to an excited state and a radio frequency (RF) antenna generates an RF field incident with frequencies which correspond to ground state transitions in the ODMR center. The ODMR center produces emitted light when illuminated by the incident light. The characteristics of the emitted light are influenced by the RF field and magnetic nanoparticles attached to the analytes. A method for detecting analytes using optically detected magnetic resonance is also provided. | 2011-03-17 |
20110062958 | COMBINED IMAGING SYSTEM, INCLUDING A MAGNETIC RESONANCE SYSTEM AND A UWB RADAR - In a combined imaging system, including a magnetic resonance system and a UWB radar, interference signals in the received signal of the one imaging system can be caused by the respective other imaging system. Therefore filters which contain in particular adaptive filters are used in order to filter out the interference signals caused in the received signal of the one system by the respective other system. By eliminating the mutually negative influence, the advantages can be completely exploited when operating the different imaging systems at the same time. | 2011-03-17 |
20110062959 | TRACKING POSITIONS OF PERSONNEL, VEHICLES, AND INANIMATE OBJECTS - A device rotates at least one static magnetic field about an axis, producing a rotating magnetic dipole field, and is movable in relation to the surface of the ground. The field is periodically sensed using a receiver to produce a receiver output responsive to the field. A positional relationship between the receiver and the device is monitored using the output. In one aspect, changing the positional relationship, by moving the device nearer to a boring tool which supports the receiver, causes an increase in accuracy of depth determination. In another aspect, determination of an actual overhead position of the boring tool, and its application, are described. Use of a plurality of measurements over at least one-half revolution of each magnet is disclosed. Establishing a surface radial direction toward a boring tool and resolution of multi-valued parameters is described. Calibration techniques, as well as a three transmitter configuration are also described. | 2011-03-17 |
20110062960 | DEVICE AND METHOD TO MONITOR ELECTRICAL CONTACT STATUS - A method and apparatus for generating a status of an electrical contact pair in an electromagnetic switch by triggering an armature movement at a substantially consistent electrical phase angle, determining a magnetic lag angle between the electromagnetic switch closing and the electrical contact pair change of state, and generating a contact status using the magnetic lag angle is provided | 2011-03-17 |
20110062961 | Ionization Gauge With Operational Parameters And Geometry Designed For High Pressure Operation - An ionization gauge to measure pressure and to reduce sputtering yields includes at least one electron source that generates electrons. The ionization gauge also includes a collector electrode that collects ions formed by the collisions between the electrons and gas molecules. The ionization gauge also includes an anode. An anode bias voltage relative to a bias voltage of a collector electrode is configured to switch at a predetermined pressure to decrease a yield of sputtering collisions. | 2011-03-17 |
20110062962 | Topology Surveying a Series of Capacitors - A topology for surveying the integrity of a plurality of capacitors connected in series between a pair of bus lines arranged to be connected to a DC-power source comprises a plurality of resistors connected in series between the pair of bus lines, the plurality of resistors being connected in parallel to the plurality of capacitors; and a comparator comparing the electric potential of an intermediate point between two capacitors of the plurality of capacitors with the electric potential of an intermediate point between two resistors of the plurality of resistors. The comparator provides a signal signaling a difference between these two electric potentials, which indicates a loss of integrity of one capacitor of the plurality of capacitors. | 2011-03-17 |
20110062963 | PROCESS AND CIRCUIT FOR THE DETECTION OF AN APPROACH TO AN ELECTRODE DEVICE - A circuit for generating an indicative signal regarding the approach of an object to an observation area has a send electrode device, a generator circuit for supplying alternating voltage to the send electrode device, a receive electrode device which extends in or along the observation area, and an output circuit for generating an output signal correlating with the field at the receive electrode device. A compensation circuit is provided to add a compensation current i | 2011-03-17 |
20110062964 | METHOD AND APPARATUS FOR MEASURING SURFACE PROPERTIES - A method for measuring surface properties according to the present invention includes the steps of: with distance control feedback applied so that a desired physical quantity to be measured that is attributed to an interaction between a probe and a sample is actually measured while changing a measured distance between the probe and the sample in accordance with a relationship between the desired physical quantity and the measured distance, (i) setting a set value, corresponding to the desired physical quantity, which serves to change the measured distance; and (ii) recording, for each set value thus set, a relationship between the measured distance changed by the set value set in the step (i) and a physical quantity measured with the probe and the sample placed at that measured distance. This allows precise and quick measurement of a physical quantity even in a region where the probe and the sample are very close to each other, while avoiding a collision between them. | 2011-03-17 |
20110062965 | DEVICE FOR THE MEASUREMENT OF COATING THICKNESSES BY MEANS OF MICROWAVES - A device for measurement of a thickness of a coating applied to a substrate includes a transmitter/receiver module configured to transmit and receive microwave radiation; a computing unit; and a probe having a flange and an inner and an outer conductor, wherein the outer conductor coaxially surrounds the inner conductor, and wherein the inner conductor includes at least one thickened section. | 2011-03-17 |
20110062966 | INSTRUMENT PORT SEAL FOR RF MEASUREMENT - An apparatus includes a blade clearance detection system. A probe is configured to communication detection frequencies from and gather reflected signals for the blade tip detection system. The probe has an end supported relative to the casing. A material provides a reference point. The blade tip clearance detection system is configured to generate a first detection frequency configured to pass through the material to detect the position of a target structure, generate a second detection frequency configured to reflect from and detect the reference point, and determine a position of a surface approximate to the target structure based upon the reference point. | 2011-03-17 |
20110062967 | VLF Test Generator - Disclosed is a very low frequency test generator for generating a high voltage having a low frequency in order to test the insulation of capacitive loads, in particular power cables. Said VLF test generator comprises two oscillators, the frequencies of which differ from one another by twice said low frequency, a resonance circuit which is fed in an interfering manner by the oscillators, is adjusted to the oscillator frequencies and causes a voltage rise of the interfering oscillator frequencies, and a demodulator for disconnecting the low-frequency high voltage generated by the interference from the resonance circuit and applying the same to the load. | 2011-03-17 |
20110062968 | ROTATING ELECTRIC-FIELD SENSOR - A compact instrument package consisting of a rotating sensor and supporting signal-processing electronics is capable of measuring two-dimensional electric-field vectors, ranging from DC to an arbitrary upper AC frequency not limited by the rotation rate, with highly improved accuracy and sensitivity when compared with previous art. In addition, contrary to previous art, the sensor can measure the electric field gradient at its location. This is achieved by the use of a combination of quadrature modulation and phase-sensitive quadrature demodulation digital signal processing in a generic rotating electric-field sensor. Ground isolated versions of the instrument can be used singly or in arrays when precise measurements of the electric fields are necessary. Either grounded or isolated versions of the instrument can operate continuously without the need for internal batteries, making it extremely attractive for a wide-range of industrial and space applications. Operational modes have been developed to distinguish the effects of ion currents and charged particles impacting the sensor from the local ambient electric field. Moreover, particular versions of the instrument can be operated in corrosive environments and conducting fluids. | 2011-03-17 |
20110062969 | SINGLE LAYER CAPACITIVE IMAGE SENSING - A capacitive imaging sensor device includes a sensor substrate. A first set of sensor electrodes is disposed on a first surface of the sensor substrate, substantially in parallel with a first axis, and with at least two of its sensor electrodes extending for different lengths along the first axis. A second set of sensor electrodes is disposed on the first surface, substantially in parallel with the first axis, and in a common single layer with the first set. A processing system is coupled with the first and second sets and configured for: measuring a first capacitive coupling between a first sensor electrode of the first set and a sensor electrode of the second set; measuring a second capacitive coupling between a second sensor electrode of the first set and the sensor electrode of the second set; and determining a capacitance image using the first and second measurements of capacitive coupling. | 2011-03-17 |
20110062970 | Rotating Angle Detection Device Used Capacitive Change and Method Thereof - This invention can increase the resolving power of the rotating angle using the rate of capacity change between two objects. The objective is to provide a rotating angle detecting device using capacitive change that is small in size and costs low to manufacture. The method to reach the above objective is a rotating angle detection device with a stator with two fixed conductor plates; and a rotator with a rotating conductor plate that rotates relatively to the above stator, with every rotation overlapping and passing the above fixed conductor plates repeatedly with different area change. | 2011-03-17 |
20110062971 | SINGLE LAYER TRANSCAPACITIVE SENSING - First, second, and third sets of sensor electrodes are disposed in a single layer on a first surface of a substrate of a transcapacitive sensor device. Sensor electrodes of the first set are substantially parallel to a first axis and are substantially identical to one another. The second set comprises a rotated mirror symmetric version of the first set, disposed parallel to the first axis. The third set is disposed between sensor electrodes of said first set and said second set, and includes a sensor electrode comprising a rectangular shape with a long side aligned paralleling the first axis. The first and third sets of sensor electrodes are configured for providing a first capacitive coupling therebetween that varies substantially along the first axis. The second and third sets are configured for providing a second capacitive coupling therebetween that varies substantially inversely to the first capacitive coupling along the first axis. | 2011-03-17 |
20110062972 | METHOD OF DETERMINING A SENSITIVITY OF A BIOSENSOR ARRANGEMENT, AND BIOSENSOR SENSITIVITY DETERMINING SYSTEM - According to an embodiment of the present invention, a method of determining or adjusting the sensitivity of a biosensor arrangement comprising at least one field effect biosensor is provided, each of the at least one field effect biosensor comprising: a semiconductor substrate comprising a source region, a drain region and a channel region disposed between the source region and the drain region; a gate isolation layer covering the channel region; and a reference electrode disposed over the gate isolation layer such that a electrolytic solution to be sensed can be provided between the reference electrode and the gate isolation layer. The method comprises the following processes carried out for each field effect biosensor: providing an electrolytic solution between the reference electrode and the gate isolation layer; applying a source/drain voltage between the source region and the drain region; varying a reference voltage supplied to the reference electrode over a voltage range; measuring a resulting drain current while varying the reference voltage in order to obtain a corresponding drain current function; and determining the sensitivity of the field effect biosensor based on the reference voltage supplied to the reference electrode and the corresponding drain current function. | 2011-03-17 |