38th week of 2010 patent applcation highlights part 19 |
Patent application number | Title | Published |
20100237761 | LAMP HAVING OUTER SHELL TO RADIATE HEAT OF LIGHT SOURCE - A lamp includes an outer shell having heat conductivity, a base provided in the outer shell, and a cover provided in the outer shell. The outer shell has a light source support, and a heat radiating surface exposed to the outside of the outer shell. The light source support is formed integral with the heat radiating surface. A light source is supported on the light source support. The light source is heated during lighting, and thermally connected to the light source support. The light source is covered with the cover. | 2010-09-23 |
20100237762 | ELECTRON SOURCE AND ELECTRON BEAM APPARATUS - Provided is an electron source which outputs a stable electron beam even when vibration is applied from the external to an apparatus which uses the electron source. The electron source is provided with an insulator ( | 2010-09-23 |
20100237763 | Cold Cathode Electron Emission Source and Method for Manufacture of the Same - The present invention provides a novel method for the manufacture of an enhanced cold cathode electron emission source allowing a measure of area to be processed at one time. The method includes the steps of: dissolving first and second polymers in solvent to obtain a polymer solution, and applying the polymer solution onto a second conductive layer before forming a hole; precipitating and immobilizing the first polymer in a particulate in the second polymer by evaporating the solvent; removing the first polymer particulate with a developer to form an etching hole in the second polymer; and performing etching process via the etching hole so as to form the hole in the second conductive layer. In one embodiment, the second polymer has greater solubility than the first polymer in the solvent, and the first polymer has greater solubility than the second polymer in the developer. | 2010-09-23 |
20100237764 | BLUE PHOSPHOR, AND LIGHT-EMITTING DEVICE USING THE SAME - The blue phosphor of the present invention includes ZrO | 2010-09-23 |
20100237765 | BLUE PHOSPHOR, AND LIGHT-EMITTING DEVICE USING THE SAME - The blue phosphor of the present invention is represented by the general formula aBaO.bSrO.(1−a−b)EuO.cMgO.dAlO | 2010-09-23 |
20100237766 | LED MODULE, LED ILLUMINATION MEANS, AND LED LAMP FOR THE ENERGY-EFFICIENT REPRODUCTION OF WHITE LIGHT - An LED module, selectively comprising at least zero, one, or a plurality of LEDs from Group B and/or Group G and/or Group R and at least one or more LEDs from Group P. The concentration of phosphors/phosphor mixtures of the LEDs in Group P is selected such that the photometric efficiency (lm/W) thereof is at or near the maximum as a function of the CIE x-coordinates. | 2010-09-23 |
20100237767 | SIALON PHOSPHOR, PROCESS FOR PRODUCING THE SAME, AND ILLUMINATOR AND LUMINESCENT ELEMENT EMPLOYING THE SAME - Phosphor that can provide white LED that uses a blue LED or an ultraviolet LED as a light source and that has superior luminous efficiency. This phosphor includes, as a main component, α-type sialon represented by a general expression: (M1)x(M2)y(Si,Al) | 2010-09-23 |
20100237768 | LUMINESCENT MATERIAL, LUMINESCENT MATERIAL COMPLEX AND METHOD OF MANUFACTURING THE SAME, FLUORESCENT LABELING REAGENT AND METHOD OF MANUFACTURING THE SAME, AND LIGHT EMITTING ELEMENT - A light emitting element, includes: a luminescent material which is obtained from a plant-derived material as a raw material, and which contains therein a silicon oxide containing therein silicon having a content rate of 40 wt. % or more, and oxygen having a content rate of 40 wt. % or more as a principal component; a fluorescent substance adsorbed on a surface of the luminescent material; and an energy source for exciting the luminescent material and the fluorescent substance. | 2010-09-23 |
20100237769 | CHARGE TRANSPORT MATERIALS FOR LUMINESCENT APPLICATIONS - There is provided a charge transport compound having Formula I: | 2010-09-23 |
20100237770 | GOLD COMPLEX AND PROCESS FOR PREPARING THE SAME, AND ORGANIC ULTRAVIOLET ELECTROLUMINESCENT DEVICE USING SAID GOLD COMPLEX - The present invention is to provide a gold complex represented by the formula (1): | 2010-09-23 |
20100237771 | THIOPHENE DERIVATIVES AND ITS APPLICATIONS - A thiophene derivative, which has a chemical structure of formula (1): | 2010-09-23 |
20100237772 | ELECTRO-OPTICAL DEVICE, ELECTRONIC DEVICE, AND METHOD FOR MANUFACTURING ELECTRO-OPTICAL DEVICE - An electro-optical device includes a substrate, a partition disposed on the substrate, and a plurality of electro-optical elements disposed on the substrate. Each element includes a functional layer having an electro-optic function, power with a resolution in a first direction that corresponds to an interval between the elements in the first direction. The plurality of elements constitute element arrays and are divided into a plurality of element groups. The element arrays are arranged in a direction crossing the first direction. Each group includes the corresponding electro-optical elements aligned in a second direction crossing the first direction, and each of the plurality of element regions includes at least one of the element groups and extends in a third direction crossing the first direction as viewed from the top. | 2010-09-23 |
20100237773 | Carbazole Derivative with Heteroaromatic Ring, and Light-Emitting Element, Light-Emitting Device, and Electronic Device Using Carbazole Derivative with Heteroaromatic Ring - Disclosed is a carbazole derivative and a light-emitting element, a light-emitting device, and an electronic device using thereof. The carbazole derivative possesses an oxadiazole moiety or a quinoxaline moiety as a heteroaromatic ring having an electron-transporting property and a carbazole moiety having a hole-transporting property. The ability of the carbazole derivative to transport both electrons and holes and its large excitation energy larger than a triplet excitation energy of a phosphorescent compound allow the formation of a phosphorescent light-emitting element having well-controlled carrier balance, which contributes to the formation of light-emitting devices and electronic devices that are capable of being driven at a low voltage, have a long lifetime, and consume low power. The detailed structure of the carbazole derivative is defined in the specification. | 2010-09-23 |
20100237774 | Lighting Device - To reduce the thickness of a lighting device which uses an electroluminescent material and to simplify the structure of a lighting device which uses an electroluminescent material, in the lighting device of the present invention: a terminal electrically connecting a light-emitting element included in the lighting device to the outside is formed over the same surface of a substrate as the light-emitting element; and the terminal is formed at the center of the substrate while the light-emitting element is stacked. In addition, the lighting device has a structure in which the light-emitting element is not easily deteriorated. | 2010-09-23 |
20100237775 | LIGHT EMITTING DIODE PACKAGE STRUCTURE AND MANUFACTURING METHOD THEREOF - A method of fabricating a light emitting diode (LED) package structure is provided. A carrier and at least one LED chip having a light emitting surface and a plurality of side surfaces are provided. A first mask having at least one first opening is provided, and the first opening at least exposes the LED chip. A spray coating apparatus is provided above the first mask to perform a first spray coating process. The spray coating apparatus moves back and forth to spray a first phosphor solution over the LED chip so that the light-emitting surface and the side surfaces of the LED chip can be conformally covered by the sprayed first phosphor solution. The first phosphor solution is cured to form a first fluorescent layer by performing a curing process. A molding compound is formed to encapsulate the first fluorescent layer and a portion of the carrier. | 2010-09-23 |
20100237776 | PLASMA DISPLAY PANEL - A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate opposite the front substrate, a barrier rib that is positioned between the front substrate and the rear substrate to provide a discharge cell, a seal layer that attaches the front substrate to the rear substrate, and an exhaust hole that is formed on the rear substrate in a portion between the barrier rib and the seal layer. The exhaust hole is positioned in a portion overlapping an active area along a shorter side or a longer side of the rear substrate. | 2010-09-23 |
20100237777 | PLASMA GENERATING APPARATUS - Provided is a plasma generating apparatus. The apparatus includes a vacuum chamber, an ElectroStatic Chuck (ESC), an antenna holder. The vacuum chamber has a hollow interior and is sealed at its top a by a vacuum plate that has a through-hole at its center. The ESC is disposed at an internal center of the vacuum chamber. The antenna unit is disposed within the vacuum chamber under the vacuum plate. The antenna cover covers and is coupled to a top of the antenna unit and receives and forwards an external source RF to the antenna unit. The cover holder is caught by an upper surface of the vacuum plate and suspends and holds the antenna unit. | 2010-09-23 |
20100237778 | Bushing system for a lamp - Disclosed is a bushing system for a lamp, comprising at least one electrode and/or lead-in wire that is/are embedded in a final section of a lamp vessel by means of a glass seal. At least some sections of said electrode and/or lead-in wire are provided with an antioxidant layer in the zone of the glass seal. Also disclosed are a lamp comprising such a bushing system as well as a method for the production thereof. | 2010-09-23 |
20100237779 | LAMP HAVING OUTER SHELL TO RADIATE HEAT OF LIGHT SOURCE - A lamp includes an outer shell having heat conductivity, a base provided in the outer shell, and a cover provided in the outer shell. The outer shell has a light source support, and a heat radiating surface exposed to the outside of the outer shell. The light source support is formed integral with the heat radiating surface. A light source is supported on the light source support. The light source is heated during lighting, and thermally connected to the light source support. The light source is covered with the cover. | 2010-09-23 |
20100237780 | Light emitting device, light emitting system comprising the same, and method of fabricating thereof - A light emitting device that provides white light of various color temperatures by using a double-sided light emitting element, a light emitting system comprising the same, and a method of fabricating thereof are provided. The light emitting device includes a double-sided light emitting element including a first light emitting element on one side of a substrate and emits light having a first wavelength and a second light emitting element on the other side of the substrate and emits light having a second wavelength, wherein the first wavelength and the second wavelength are different each other, a first variable resistor coupled to the first light emitting element and adjusting a first driving power applied to the first light emitting element, and a second variable resistor coupled to the second light emitting element and adjusting a second driving power applied to the second light emitting element. | 2010-09-23 |
20100237781 | WIRELESS CONVENIENCE LIGHTING SYSTEM AND METHOD OF MAKING SAME - A wireless convenience lighting system, comprises a base unit, the base unit connectable to an AC power supply, the base unit having a transmitter structure emitting at least one signal indicating one of an AC power loss or the AC power on, a remote lighting unit having a light source, and auxiliary power supply and a receiver structure, the receiver structure receiving the signal from the base unit, the base unit wirelessly activating the light source of the remote lighting unit when the AC power is lost. | 2010-09-23 |
20100237782 | SELF-DUSTING LAMP DEVICE - A self-dusting lamp device includes a housing, a heat-dissipating module, a lighting element and a controlling unit. The housing has an air inlet portion and an air outlet portion on the outer periphery thereof. The heat-dissipating module has a heat-dissipating fan mounted in the housing. The lighting element is coupled to the heat-dissipating module for illumination. The controlling unit has a driving circuit electrically connected to the heat-dissipating fan and a direction controlling circuit electrically connected to the driving circuit. The direction controlling circuit controls the heat-dissipating fan to rotate in a normal direction for dissipating heat or to rotate in a dusting direction for dusting down the housing through the driving circuit. | 2010-09-23 |
20100237783 | WIRELESS CONVENIENCE LIGHTING SYSTEM AND METHOD OF MAKING SAME - A wireless convenience lighting system, comprises a base unit, the base unit connectable to an AC power supply, the base unit having a transmitter structure emitting at least one signal indicating one of an AC power loss or the AC power on, a remote lighting unit having a light source, and auxiliary power supply and a receiver structure, the receiver structure receiving the signal from the base unit, the base unit wirelessly activating the light source of the remote lighting unit when the AC power is lost. | 2010-09-23 |
20100237784 | PORTABLE LIGHTING DEVICE AND METHOD THEREOF - A portable lighting device includes a power source, a controller, and a load. The controller comprises a power input terminal which is electrically connected to the power source via a switch. The load is electrically connected to a power output terminal of the controller and is capable of providing a feedback signal. The controller regulates the power being provided to the load according to the feedback signal and a conduction status of the switch. | 2010-09-23 |
20100237785 | PORTABLE TERMINAL AND DISPLAY CONTROLLING METHOD THEREOF - Disclosed are a portable terminal including, a terminal body having a display, a solar cell disposed on at least one region of the terminal body and configured to convert sunlight into electric energy for charging a battery, a sensing unit configured to detect a quantity of state relating to the electric energy generated from the solar cell, and a controller configured to control brightness of the display based upon the quantity of state detected by the sensing unit, and a method for controlling a display thereof. | 2010-09-23 |
20100237786 | METHOD AND APPARATUS FOR AN INTELLIGENT LIGHT EMITTING DIODE DRIVER HAVING POWER FACTOR CORRECTION CAPABILITY - The present invention relates to circuits and methods for controlling one or more LED strings. The circuit comprises a programmable controller coupled to one or more detectors, wherein the one or more detectors are configured to detect one or more measurable parameters of one or more LEDs or LED drivers. The controller is configured to receive information from the one or more detectors related to the one or more measurable parameters and use that information to determine the desired drive voltage for the LED strings. The controller is associated with a power supply having power factor correction (PFC) capability. The controller provides the power supply with a control signal indicative of the desired drive voltage for one or more LED strings. The power supply also receives ac voltage and current waveforms as inputs and performs power factor correction and rectified waveforms related to the ac waveforms. The power supply generates the desired drive voltage based on the control signal. | 2010-09-23 |
20100237787 | PROCESS AND CIRCUITRY FOR CONTROLLING A LOAD - A current source and an associated method for supplying current to a load such as an arrangement of LEDs. The intensity of the supplied current varies as a function of the temperature of the load. The intensity of the current is temperature-dependent and limited to a predefined maximum. The temperature dependence is achieved by the component parts that are used without the help of special temperature sensors. The current source is supplied with a reference voltage derived from an integrated circuit. The reference voltage is tapped from a port of the IC and therefore it is switchable. The reference voltage is used to produce a control current, which is fed through a driver stage to produce the current of the current source. Elements in the current source limit the current's intensity and change it as a function of temperature. | 2010-09-23 |
20100237788 | Flashing light string - A light string includes a load comprising a trigger LED assembly and a lighting assembly connected in series with the trigger LED assembly, the lighting assembly comprising a plurality of series connected lamps comprising an LED; and a rectifier for converting a source of AC into DC which is supplied to the load. The trigger LED assembly is adapted to flash and cause the lamps to flash. In one embodiment the trigger LED assembly includes a trigger LED and a capacitor connected in parallel with the trigger LED. The trigger LED includes a first LED and a second LED. The cathode of the first LED is connected to the cathode of the second LED, the anode of the first LED is connected to the positive terminal of the capacitor, and the anode of the second LED is connected to the negative terminal of the capacitor respectively. | 2010-09-23 |
20100237789 | LIGHT-EMITTING DIODE (LED) LAMP STRING DEVICE WITH BATTERY BOX - A lighting-emitting diode (LED) lamp string device with a battery box is provided. The LED lamp string device includes a power supply system and a lamp string light emission system connected together. The lamp string light emission system includes an LED lamp string that is composed of a plurality of LED lamps and electrical wires that electrically connect the LED lamps. The power supply system includes batteries and a light controller that are connected to the LED lamp string through the electrical wires and further includes a battery box, in which the light controller and the batteries are received. | 2010-09-23 |
20100237790 | SYSTEM AND METHOD FOR SELECTIVELY DIMMING AN LED - Embodiments of the present disclosure include an LED ballast circuit for dimming one or more LEDs using a phase controlled dimmer switch. The LED ballast circuit has a power conditioning unit which includes a substantially fixed duty cycle clock for outputting a clock cycle and a transformer configured to store energy and discharge a substantial portion of the stored energy once per clock cycle in order to power one or more LEDs. The LED ballast circuit and load collectively behave like a resistor. | 2010-09-23 |
20100237791 | ELECTRONIC BALLAST AND METHOD FOR OPERATING AT LEAST ONE FIRST AND SECOND DISCHARGE LAMP - An electronic ballast for operating at least two discharge lamps is provided, which may include a starting detection apparatus for detecting whether one of the discharge lamps has been started; wherein a drive circuit includes an input, which is coupled to a starting detection apparatus, wherein a threshold value entry apparatus is designed to enter a second threshold value for a setpoint value of a total current through at least two inductances, wherein the second threshold value has a smaller magnitude than a first threshold value; and wherein the drive circuit is designed to drive a first electronic switch and a second electronic switch taking into consideration the first threshold value as setpoint value prior to detection of the starting of a discharge lamp by the starting detection apparatus, and taking into consideration the second threshold value as setpoint value. | 2010-09-23 |
20100237792 | DISCHARGE TUBE POWER SUPPLY APPARATUS AND SEMICONDUCTOR INTEGRATED CIRCUIT - An AC conversion circuit includes a main transformer having a primary winding and a secondary winding to electrically insulate the AC power source side and the discharge tube side from each other, an IC | 2010-09-23 |
20100237793 | ELECTRONIC BALLAST WITH FEEDBACK CURRENT CONTROL FOR PREHEATING OF LAMP FILAMENTS - A discharge lamp ballast is provided for powering a discharge lamp with feedback filament heating control. A startup circuit is coupled between output terminals of a DC-AC power converter together with a discharge lamp. A lamp current detection circuit and a lamp voltage detection circuit detect output signals to the lamp. A control circuit controls the switching elements and generates an operating frequency in accordance with a startup operation to generate a high voltage output from the startup circuit and ignite the discharge lamp, a filament heating operation wherein the operating frequency is controlled so as to set the amplitude of the output current detected by the lamp current detection circuit to a target current amplitude based on the amplitude of the output voltage detected by the lamp voltage detection circuit, and a steady-state operation wherein the operating frequency is decreased to maintain a stable light output from the discharge lamp. | 2010-09-23 |
20100237794 | DISCHARGE LAMP BALLAST WITH FEEDBACK CURRENT CONTROL DURING AN ELECTRODE HEATING OPERATION - A discharge lamp ballast is provided with a feedback control operation to provide optimal lamp current flow during an electrode heating operation. A startup circuit coupled together with a discharge lamp between output terminals of a DC-AC power converter having a plurality of switches. The startup circuit generates a high voltage to ignite the lamp. A lamp current sensor detects an amplitude of an output current to the lamp. A control circuit controls the switches in accordance with each of a plurality of control operations including a startup operation to ignite the lamp using the high voltage generated by the startup circuit, an electrode heating operation wherein an operating frequency of the switches is controlled to set the amplitude of the detected output current to a predetermined target current amplitude, and a normal operation wherein the operating frequency is reduced to maintain stable lighting of the lamp. | 2010-09-23 |
20100237795 | MULTIPLE LAMP DRIVING DEVICE COMPRISING BALANCE TRANSFORMER - The present invention provides a multiple lamp driving capable of being applied to a multiple lamp system such as an LCD, wherein the multiple lamp driving device includes: a power supply unit for supplying a driving voltage to a lamp unit provided with first to 4nth lamps; and a balancing circuit unit including first to nth balance transformers for receiving the driving voltage from the power supply unit and balancing currents flowing through the first to 4nth lamps, wherein each of the first to nth balance transformers includes a primary side connected to the power supply unit in series and first and second secondary sides electrically connected to the primary side, each one end of the first and second secondary sides is connected to one end of one of the first to 4nth lamps, each of the other ends of the first and second secondary sides is connected to one end of another among the first to 4nth lamps, and the other ends of all of the first to 4nth lamps are connected to a ground. | 2010-09-23 |
20100237796 | POCKET TOOL WITH A LIGHT POINTER - The invention relates to a compact light module ( | 2010-09-23 |
20100237797 | HIGH-INTENSITY DISCHARGE LAMP AND LIGHTING DEVICE - A high-intensity discharge lamp including an arc tube provided with a heat-resistant translucent discharge vessel forming a discharge space, an electrode structure, a discharge medium charged in the discharge vessel, the discharge medium being composed of a light-emitting metal including mercury and a starting gas, a support member electrically connected with the electrode structure of the arc tube and holding the arc tube and an outer bulb having the arc tube disposed therein along a tube axis and sealed with a support member at an end portion thereof. The electrode structure has an electrode shaft hermetically sealed at each of opposed end portions of the discharge vessel and having a tip portion disposed in the discharge vessel, a coiled electrode wound around the tip portion of the electrode shaft disposed in the discharge vessel, and a recessed portion or a protruding portion formed on the electrode shaft spaced from the coiled electrode. A lighting device with the high-intensity discharge lamp is also described. | 2010-09-23 |
20100237798 | Method and apparatus for retrofitting lighting fixtures with dimmable color selectable light emitting diodes - A method and apparatus for retrofitting a lighting fixture with at least one LED and an attachment configured to couple the light retrofitting means to a network including a power line; and a controlling means configured to influence the intensity and color of light emitted by the lighting means. | 2010-09-23 |
20100237799 | LED DRIVING CIRCUIT - The present invention provides an LED driving circuit including: an inverter unit for switching an input power source; a plurality of transformers including a plurality of primary windings connected to the inverter unit and connected to each other in series and a plurality of secondary windings each of which is coupled with each of the primary windings; a plurality of rectification units each of which is connected to each of the secondary windings; and a plurality of LEDs each of which is connected to each of the rectification units. | 2010-09-23 |
20100237800 | LIGHT EMITTING DEVICE AND DRIVING CIRCUIT THEREOF - A light emitting device comprises a first light emitting unit and a second light emitting unit connected in series with each other, and a PTF unit connected in parallel with the first light emitting unit and in series with the second light emitting unit. Each of the first light emitting unit and second light emitting unit comprises at least one LED. The PTF unit allows the second light emitting unit to be operated before operation of the first light emitting unit upon application of an AC voltage source. The light emitting device reduces total harmonic distortion and flickering, and improves power factor and optical efficiency. A driving circuit of the light emitting device is also disclosed. | 2010-09-23 |
20100237801 | BACKLIGHT UNIT - A backlight unit that realizes stabilization of lighting operation in the event of carrying out lighting operation at low luminance. The backlight unit is backlight unit ( | 2010-09-23 |
20100237802 | CURRENT BALANCING DEVICE, LED LIGHTING DEVICE, AND LCD B/L MODULE - A current balancing device includes: a power supply that outputs sinusoidal alternating-current; and a plurality of series circuits, each of the series circuits including a full-wave rectifier, one or more of windings, and one or more of loads in series connection, the full-wave rectifier connected to an output of the power supply and performing full-wave rectification for the alternating-current of the power supply. Currents flowing in the respective series circuits are balanced based on an electromagnetic force generated in one or more of the windings. | 2010-09-23 |
20100237803 | Dimmable color selectable light emitting diodes - A dimmable color selectable light emitting diode (LED) lighting system, comprising: a plurality of light sources including at least one LED and being configured to communicate with one another over a network including at least one power line; and a controller configured to communicate with the plurality of light sources over the network to control the intensity and color of light displayed by each of the plurality of light sources. | 2010-09-23 |
20100237804 | CONSTANT BRIGHTNESS CONTROL FOR ELECTROLUMINESCENT LAMP - A ballast ( | 2010-09-23 |
20100237805 | Lighting Device - To provide a lighting device in which the luminance of an EL element is maintained even when the EL element deteriorates so that degradation of the lighting device is reduced, the lighting device includes a surface light source portion including an organic EL element, and a control circuit portion provided in a base portion. The control circuit portion counts a lighting time of the organic EL element and controls the luminance of the organic EL element in accordance with the lighting time. Accordingly, the lighting device in which the luminance of an EL element is maintained regardless of degradation of the EL element so that degradation of the lighting device is reduced can be provided. | 2010-09-23 |
20100237806 | Solid State Lighting Panels with Limited Color Gamut and Methods of Limiting Color Gamut in Solid State Lighting Panels - Methods of controlling a backlight unit including a plurality of solid state light emitting devices include receiving a request to set a color point of the backlight unit at a requested color point, and determining if the requested color point is within an acceptable range. In response to the requested color point being outside the acceptable range, a modified color point is selected in response to the requested color point, and a color point of the backlight unit is set at the modified color point. Corresponding solid state lighting units are also disclosed. | 2010-09-23 |
20100237807 | SYSTEM AND METHOD FOR BIASING CMUT ELEMENTS - A system and method for biasing a capacitive ultrasonic transducer (CMUT) device with a circuit that includes a CMUT that includes a first plate and a second plate that form a membrane structure; a circuit voltage source at a complementary metal-oxide-semiconductor (CMOS) compatible voltage; a bias voltage source that applies a bias voltage greater than a CMOS compatible voltage and is applied to the first plate; and readout electronics with an input connected on the second plate side of the circuit. | 2010-09-23 |
20100237808 | EFFICIENT GENERATOR GRID CONNECTION SCHEME POWERING A LOCAL VARIABLE FREQUENCY MOTOR DRIVE - A system for using a generator to simultaneously power a variable frequency motor drive locally and provide clean power to a grid comprising an electric generator supplying alternating current to a power conversion system. The power conversion system includes a converter changing generator AC output to direct current (DC); a capacitor bank that filters the DC from the converter and outputs a DC bus power; a grid inverter capable of replicating grid power from the DC bus power; and an output filter for supplying power to the power grid. A variable frequency motor drive receives DC bus power from the power conversion system. The variable frequency motor drive may be operatively connected to the power conversion system, or integrated therein. | 2010-09-23 |
20100237809 | INVERTER CONTROLLER, AND MOTOR DRIVING DEVICE, ELECTRIC COMPRESSOR AND ELECTRIC HOME APPLIANCE USING THE INVERTER CONTROLLER - An inverter controller for driving a brushless DC motor, of which rotor is provided with permanent magnets, includes an inverter circuit, a position sensing circuit, a DC voltage sensor, and a conduction angle controller. The inverter circuit is connected to the brushless DC motor for driving this motor. The position sensing circuit senses a rotor position with respect to a stator from an induction voltage of the brushless DC motor. The DC voltage sensor senses a voltage value of a DC power voltage supplied to the inverter circuit. The conduction angle controller changes a conduction angle of the inverter circuit within a range less than 180 degrees in electric angles in response to a rate of change in the DC power voltage. | 2010-09-23 |
20100237810 | METHOD AND CONTROLLER FOR CONTROLLING AN IPM MOTOR - The present invention relates to a method for sensorless control of a permanent magnet motor exhibiting saliency, the method comprising the steps of determining a back electromotive force signal of a non-conducting phase winding of the permanent magnet motor, and applying a first drive voltage to at least one other phase winding of the permanent magnet motor, said first drive voltage being phase-shifted relative to the determined back electromotive force signal. Moreover, the present invention relates to a control system for carrying out the above-mentioned method. | 2010-09-23 |
20100237811 | Six-Phase Firing Circuit For Brushless DC Controls - A six-phase 12 step firing circuit for brushless DC controllers to independently distribute current in six motor stator windings of a six-phase brushless DC motor, the firing circuit receives hall sensor rotor position signals in conjunction with a drive start signal and pulse width modulation commands driving a six-phase power bridge assembly fired at 30 degree intervals to produce a sequence for rotation of the motor. | 2010-09-23 |
20100237812 | MOTOR DRIVING APPARATUS - A motor driving apparatus that includes a current changing component, a detecting component, a control component, a back electromotive voltage zero cross detecting component, and a change control component. The current changing component drives a motor. The detecting component detects a point where a value of a magnitude of a current flowing into a coil of the motor changes from a decrease to an increase. The control component controls so that supply of the current to the coil is shut down, when the point is detected and the back electromotive voltage zero cross detecting component detects a zero cross of a back electromotive voltage generated in the coil. The change control component controls so that the direction of the current flowing into the coil changes to a reverse direction opposite to the predetermined direction, when the zero cross is detected. | 2010-09-23 |
20100237813 | BRUSHLESS MOTOR DRIVING APPARATUS - A brushless motor driving apparatus that includes a rotation signal output component, a half-cycle signal generating component, a plurality of counters, and a duty control signal generating component is provided. The plurality of counters, each of which uses a different bit number to count, repeatedly resets a count value and restarts a count operation for every bit number, resets a count value together with rising or falling of a half-cycle signal, and outputs a pulse signal which is inverted for every reset that occurs while the count operation is being performed. The duty control signal generating component generates a duty control signal to determine a duty ratio of a control signal to control driving of a single-phase brushless motor, based on at least two pulse signals selected from the pulse signals output from the plurality of counters. | 2010-09-23 |
20100237814 | METHOD FOR CONTROLLING BRUSHLESS DC MOTOR - A method for controlling a brushless DC motor, comprising transmitting a phase-inversion signal to a motor control unit by a rotor position detecting unit after a motor enters a stable state, advancing or delaying phase shift by the motor control unit at an offset electrical angle, recording and comparing phase current values I | 2010-09-23 |
20100237815 | APPARATUS FOR SWITCHING WINDINGS OF AC THREE-PHASE MOTOR - A winding switching apparatus for switching windings of an AC three-phase motor is provided. In each winding switching section of the winding switching apparatus, a positive-side charging resistor, a negative-side charging resistor, and a capacitor are connected in series between a positive-side DC bus and a negative-side DC bus of an inverter; the positive side of the capacitor is connected to the cathodes of respective diodes of a diode unit; and switching between high-speed windings and low-speed windings is carried out, with a capacitor potential being the same as an inverter DC bus voltage. A state detector and a comparator are also provided for each winding switching section to detect erroneous wiring and component abnormalities. | 2010-09-23 |
20100237816 | BRUSHLESS MOTOR DRIVING CIRCUIT - The present disclosure provides a brushless motor driving circuit capable of clamping an output voltage at a proper voltage, even when a power source voltage changes. Namely, a pre-driver circuit generates a voltage for driving a brushless motor from a source voltage by turning on/off first and second PMOS transistors and first and second NMOS transistors in an H bridge circuit of a drive voltage generating circuit, and applies the voltage to a coil of the brushless motor. A first clamp circuit turns on/off the first NMOS transistor on the ground side so that the output voltage at a first output terminal becomes equal to or lower than the source voltage. A second clamp circuit turns on/off the second NMOS transistor on the ground side so that output voltage at a second output terminal becomes equal to or lower than the source voltage. | 2010-09-23 |
20100237817 | Method and Apparatus for Estimating Rotor Position in a Sensorless Synchronous Motor - The present invention provides a simple, robust, and universal position observer for use with sensorless synchronous machines. The observer may be implemented using an equivalent EMF model of a synchronous machine or, alternately, using a sliding mode controller based on the equivalent EMF model of the synchronous machine. The observer may be used on any type of synchronous machine, including salient or non-salient pole machines such as a permanent magnet, interior permanent magnet, wound rotor, or reluctance synchronous machine. The observer provides low sensitivity to parameter variations and disturbances or transient conditions in the machine. In addition, no knowledge of speed is required as an input to the observer and an estimated position may be calculated using a subset of the machine parameters. | 2010-09-23 |
20100237818 | DRIVING CIRCUIT FOR BRUSHLESS MOTOR USING HALL ELEMENT - A driving circuit feeds driving current to a coil in a brushless motor, and feeds bias current to a Hall element that senses the rotational position of the motor. The driving current and bias current are supplied from the same power supply, but the bias current passes through a load element that reduces power dissipation by the Hall bias circuit by causing some of the power to be dissipated by the load element instead. The Hall bias circuit can therefore be combined with the other driving circuitry into a single integrated circuit, even if the brushless motor is driven at a comparatively high voltage. | 2010-09-23 |
20100237819 | Control Systems and Methods for Compensating for Effects of a Stage Motor - Embodiments of the invention compensate for one or more effects of a stage motor in a precision stage device. A feedforward module receives an input signal corresponding to the effect of the motor and generates a feedforward control signal that can be used to modify a motor control signal to compensate for the effect of the motor. In some embodiments, a control system is provided to compensate for a back-electromotive force generated by a motor, while in other embodiments, a control system may compensate for an inductive effect of a motor. Embodiments of the invention may be useful in precision stage devices, for example, lithography devices such as steppers and scanners. | 2010-09-23 |
20100237820 | CONTROL SYSTEM FOR MOTOR - A motor control system includes a motor unit and a controller unit electrically connected therewith. The motor unit includes a motor, a resolver detecting a rotational angle of the motor and a first memory storing first error data for detection by the resolver of the motor's rotational angle. The controller unit includes a second memory storing second error data for detection by the resolver of the motor's rotational angle and a motor controller determining an actual rotational angle of the motor according to the detected rotational angle detected by the resolver and the second error data in the second memory and controls the motor's rotation according to the determined actual rotational angle. The motor unit or the controller unit further includes an update section updating the second error data with the first error data according to motor data in the first and second memories. | 2010-09-23 |
20100237821 | VECTOR CONTROL DEVICE FOR ALTERNATING-CURRENT ELECTRIC MOTOR - There is provided a vector control device for an alternating-current electric motor having a damping controller which automatically calculates an optimum damping operation amount and does not require any gain setting itself, whereby an adjustment work of a control system can be simplified. The vector control device is equipped with a vector controller | 2010-09-23 |
20100237822 | Drive unit for rotating electrical machine - An inverter is capable of converting a direct current from a direct current power supply into an alternating current and supplying it to an armature winding. A rectifier circuit is capable of rectifying the current, that has been converted to an alternating current by the inverter, into a direct current and supplying it to the field winding. The amount of the alternating current supplied to the armature winding and the amount of the direct current supplied to the field winding are in a proportional relationship, and implementation of switching control of the inverter controls both the amount of the alternating current supplied to the armature winding and the amount of the direct current supplied to the field winding while this proportional relationship therebetween is maintained. | 2010-09-23 |
20100237823 | IN SITU RECHARGEABLE BATTERY AND CHARGING STAND - A secondary button cell battery that is particularly suited for use in hearing aid appliances, and an associated charging station. Recharging is accomplished without direct conductive connection between the source of the energy and either the battery or its appliance. Radio frequency energy is harvested in an enclosed chamber in a charging station and applied to the recharging of the button cell. Such energy is harvested by the use of one or more energy harvesting diodes connected in parallel with the battery. Multiple diodes connected in parallel or serial may be used to adjust charging current or voltage or both. Charge control is provided by directly or indirectly detecting the level of charge on the cell. Where the associated appliance is a hearing aid, the charge level detection may be accomplished acoustically by determining the characteristics of the sound emitted by the hearing aid, and charging is accomplished with the cell within the hearing aid appliance. | 2010-09-23 |
20100237824 | INDUCTION CHARGER FOR CHARGING ELECTRONIC DEVICE - An induction charger for charging an electronic device includes a carrying car, a transmission assembly, a permanent magnet, an alternating current power supply, and an induction coil. The carrying car includes a base defined at least four slots scatted therein, a cover defining a through hole, at least two rotatable shaft, and at least two pairs of wheels positioned on a corresponding rotatable shaft and received in and passed through one corresponding slot. The transmission assembly includes a gear case defining a first through hole and a second through hole, a first hollow shaft non-rotatably fixed to the permanent magnet, and a second hollow shaft being inserted into a corresponding rotatable shaft. The induction coil is positioned in the base and aligned with and substantially parallel to the permanent magnet, and is electrically connected to the alternating current power supply. | 2010-09-23 |
20100237825 | Battery Charging Device and Delay Angle Control Method for Battery Charging Device - A battery charging device of the present invention has a rectifier portion that is formed by switching elements, and performs advance angle/delay angle control. An advance angle/delay angle amount in the advance angle/delay angle control is determined based on a differential voltage between the voltage of a battery and a predetermined target voltage. In this case, when a determined delay angle amount exceeds a delay angle limit value, delay angle control is performed using the delay angle limit value. Moreover, the power generation amount of an alternating current generator is detected, and the delay angle amount and power generation amount are stored. If the current delay angle amount is greater than the previous delay angle amount, and the previous power generation amount is greater than the current power generation amount, then the previous delay angle amount is set as the delay angle limit value. | 2010-09-23 |
20100237826 | CHARGER FOR CHARGING AT LEAST ONE RECHARGEABLE ENERGY STORAGE UNIT - The invention relates to a charging device for charging at least one rechargeable energy storage unit, having a defined inner resistance and having a compensation circuit for the compensation of a voltage drop during the charging operation caused by the inner resistance. The compensation circuit has a current detection for detecting a charge current of the rechargeable energy storage unit and a voltage regulator for adjusting the charge voltage to the detected charge current. The charging device is characterized in that the compensation circuit has a voltage distributor between the current detector and the voltage regulator, by the dimensioning of which the compensation of the inner resistance is carried out. | 2010-09-23 |
20100237827 | CHARGING SYSTEM AND ELECTRONIC DEVICE - A charging system for charging a rechargeable battery in an electronic device includes a charging generator, a receiver and at least one magnetic core. The charging generator includes a first coil. The receiver includes a second coil magnetically coupled to the first coil, and a charging module electrically connecting the second coil to the rechargeable battery. The charging module is configured for charging the rechargeable battery using current induced in the second coil. The at least one magnetic core is sleeved by the first coil or by the second coil. | 2010-09-23 |
20100237828 | BATTERY PACK, AND BATTERY SYSTEM - An object of the present invention is to provide a battery pack and a battery system capable of reducing unnecessary power loss upon reducing the variation in the state of charge that has occurred between a plurality of secondary batteries in an assembled battery in which the secondary batteries are connected in series-parallel. The battery pack and the battery system include a switching element Q | 2010-09-23 |
20100237829 | ASSEMBLED BATTERY SYSTEM AND ASSEMBLED BATTERY PROTECTION DEVICE - An assembled battery system includes an assembled battery including a plurality of electric cell blocks connected in series, the electric cell blocks each including at least one nonaqueous electrolyte secondary battery provided with a negative electrode current collector formed of aluminum or an aluminum alloy, a voltage measuring unit configured to measure a plurality of voltages of the electric cell blocks, a controller which controls charge/discharge of the assembled battery in accordance with the measured voltages, and bypass circuits connected in parallel to the electric cell blocks, the bypass circuits each bypassing a current that flows from a negative electrode of one of the electric cell blocks to a positive electrode of the one of electric cell blocks when the measured voltage of the one of electric cell blocks is a negative value not greater than a threshold value. | 2010-09-23 |
20100237830 | System and Method for Balancing Charge Within a Battery Pack - A system for balancing charge within a battery pack with a plurality of cells connected in series, including a capacitor; a processor configured to select a combination of donor cells and receiver cells from the plurality of cells in one of the following two modes: (1) a first mode where the number of donor cells is equal to the number of receiver cells, and (2) a second mode where the number of donor cells is greater than the number of receiver cells; and a plurality of switches that electrically connect the capacitor to the donor cells to charge the capacitor, and that electrically connected the capacitor to the receiver cells to discharge the capacitor. The transfer of charge between cells in the plurality of cells through the capacitor balances the charge within the battery pack. | 2010-09-23 |
20100237831 | DEVICE, IN PARTICULAR CHARGING DEVICE, FOR CHARGING AN ACCUMULATOR - Charging devices which can be operated in a plurality of manually selectable charging modes and which have a discharging device are known. According to the invention, a storage charge mode which is optimized for storage of the accumulator is proposed. For this purpose, a device for determining the charge state of the accumulator is provided. When the storage charge mode is activated, the accumulator is charged only up to a predefined, optimized partially charged state, in which case the discharging device discharges the accumulator as far as the predefined partially charged state if the charge state which is determined at the start of the storage charge mode is higher than the predefined partially charged state. | 2010-09-23 |
20100237832 | CHARGING METHOD AND CHARGING SYSTEM - The present invention relates to a method for electrically charging a plurality of rechargeable battery cells. The battery cells are embodied for a charging with a constant current and an increasing voltage in a first phase and for a charging with a constant voltage and a decreasing current in a second phase following the first phase. In the method, the battery cells are charged sequentially so that only one of the battery cells is charged at a time. The method features the fact that one battery cell is charged in the first phase, the charging of the relevant battery cell in the first phase is interrupted when a predetermined limit voltage is fallen below, and the charging is continued with another battery cell. The invention also relates to a charging system for electrically charging a plurality of rechargeable battery cells. | 2010-09-23 |
20100237833 | MULTI-OUTPUT POWER SUPPLY DEVICE - A multi-output power supply device of low noise is disclosed that converts a first input voltage to plural different voltages. The multi-output power supply device includes a first power supply circuit for generating a constant voltage from the first input voltage, and outputs the constant voltage through a first output terminal; and one or more second power supply circuits each including a charge pump circuit for generating a constant voltage from the output voltage from the first power supply circuit. Each of the second power supply circuits changes a period of a charging and discharging cycle for charging and discharging a flying capacitor according to an electric current output from the second output terminal. | 2010-09-23 |
20100237834 | POWER GENERATION PLANT VOLTAGE CONTROL - A method for controlling a power generation plant may be provided. First, an equivalent grid voltage may be estimated based on electric magnitudes measured at a connection point of the power generation plant and an equivalent model of a power grid to which the power generation plant is connected. Then, on the basis of said estimated equivalent voltage, a command indicative of reactive power to be produced by the power generation plant may be generated. | 2010-09-23 |
20100237835 | REACTIVE POWER COMPENSATOR - A capacitor bank unit includes three capacitor banks that have respective capacitances that are multiples of a basic capacitance in accordance with a number sequence of the n-th power of 2. One of the capacitor banks has the basic capacitance, remaining two of the capacitor banks includes two subbanks each. The capacitance of a subbank is set to a capacitance that is a multiple of the basic capacitance in accordance with a number sequence of the m-th power of 2. When any one of the capacitor banks fails, each of capacitor banks following the failed capacitor bank substitutes for a capacitor bank located immediately before itself. | 2010-09-23 |
20100237836 | METHOD AND APPARATUS FOR MODIFYING RIGHT HALF-PLANE ZERO IN A CASCADED DC-DC BUCK-BOOST CONVERTER - A method to generate a substantially DC output having a voltage level different than a DC input, constituted of receiving a feedback signal representing at least one of the voltage level and the current level of the generated substantially DC output; relatively emphasizing the high frequency portion of the feedback signal; controlling the buck function of a cascaded buck-boost converter with a first switching signal having a first duty cycle, the first duty cycle being a first function of the received feedback signal responsive to said relatively emphasized high frequency portion; and controlling the boost function with a second switching signal having a second duty cycle, the second duty cycle being a second function of the received feedback signal, wherein the first switching signal and the second switching signal are continuously enabled to facilitate a continuous conduction mode. | 2010-09-23 |
20100237837 | MINIMUM ON-TIME REDUCTION METHOD, APPARATUS, AND SYSTEM USING SAME - The present invention discloses a minimum on-time reduction method for a switching power conversion, comprising the steps of: generating a first reset signal and an over-supply pulse signal according to a current sensing signal and a reference signal; generating a blanking signal according to a count number of the over-supply pulse signal; and generating a second reset signal by performing Logic-AND operation on the first reset signal and the blanking signal. Furthermore, the present invention also provides a minimum on-time reduction apparatus for a power conversion, and a system using the minimum on-time reduction apparatus for a power conversion. | 2010-09-23 |
20100237838 | SWITCH-MODE POWER SUPPLY (SMPS) CONTROLLER INTEGRATED CIRCUIT DETERMINING OPERATING CHARACTERISTICS FROM FILTER COMPONENT INFORMATION - A switch-mode power supply (SMPS) controller integrated circuit (IC) provides ease of integration and SMPS designs. Value and/or types of components external to the controller IC that affect the SMPS control loop response are provided to the IC and an internal conversion block determines coefficients for a digital compensator in conformity with the provided value/type information. The conversion block may be a look-up table, processor or dedicated logic, and the component value/type information may be provided via terminals of the controller IC via logic state, attached resistance/capacitance or from external storage. Alternatively, the component values may be programmed into non-volatile storage within the controller IC. | 2010-09-23 |
20100237839 | HYBRID LOW DROPOUT VOLTAGE REGULATOR CIRCUIT - A voltage regulator circuit includes a digital control block, an amplifier and a transistor. The digital control block receives a first reference voltage and a feedback voltage, converts the received voltages from analog to digital signals, performs an integration operation on the converted signals, and converts the result of the integration operation to an analog signal. The amplifier is responsive to the output of the digital control block and to a regulated output voltage of the regulator circuit. The transistor has a first terminal responsive to the output of the amplifier, a second terminal that receives the input voltage being regulated, and a third terminal that supplies the regulated output voltage. The transistor may be an NMOS or a bipolar NPN transistor. The feedback voltage may be generated by dividing the regulated output voltage. The digital control block optionally generates a biasing signal to bias the amplifier. | 2010-09-23 |
20100237840 | Bidirectional Power Converters - Circuits and methods for bidirectional power conversion are provided that allow mobile and other devices to generate power suitable to support multiple modes of operation. The bidirectional power converters of the present invention may operate in both step up and step down configurations rather than having a single dedicated conversion function and use many of the same components thereby reducing converter size and complexity. In some embodiments, the converter of the present invention may be used to provide a power component of a communications link, such as a USB link. | 2010-09-23 |
20100237841 | POWER SUPPLY AND POWER CONTROL DEVICE - A power supply includes a first switch and a second switch coupled in series between an input voltage terminal to which an input voltage is applied and a reference voltage terminal to which a reference voltage lower than the input voltage is applied, an inductor disposed between a junction coupling the first and second switches and an output terminal from which an output voltage is output, and a controller controlling the first and second switches to be alternately switched at a given switching cycle depending on an error of the output voltage with respect to a target voltage, wherein the controller changes the switching cycle from a first cycle to a second cycle longer than the first cycle, depending on a voltage at the junction when the second switch is in a turned-on state. | 2010-09-23 |
20100237842 | SWITCHING CIRCUIT - A switching circuit includes: a switching section including at least one first terminal, a plurality of second terminals, and a switching element configured to connect the first terminal to one of the second terminals; a driver driving the switching element in accordance with an external terminal switching control signal; a DC-to-DC converter, which supplies electric power to the driver, having a first state with a response to a load transient and a second state with the response to a load transient being slower than the first state; and a power controller controlling the DC-to-DC converter to operate with the first state during a first time period corresponding to change in the external terminal switching control signal, and to operate with the second state during a second time period other than the first time period. | 2010-09-23 |
20100237843 | SWITCHED-MODE POWER SUPPLY - A switched-mode converter including a first magnetic circuit including a first inductive element, coupled to at least one second inductive element and electrically in series with this second element and with a first diode between a first one of two input terminals and a first one of two output terminals; a first switch in series with a third inductive element between a second terminal of the first inductive element and a second input terminal, a common node between the first switch and the third inductive element being connected to one of the output terminals by a second diode; and a circuit capable of canceling the voltage across this first switch before its turning-on. | 2010-09-23 |
20100237844 | REFERENCE VOLTAGE PROVIDING CIRCUIT AND RELATED METHOD - A reference voltage providing circuit, for providing a reference voltage to an error amplifier comparing the reference voltage and a feedback voltage. The reference voltage providing circuit comprises: a voltage detection module, for detecting the feedback voltage to generate a control signal; and a controllable voltage providing module, for providing the reference voltage according to the control signal. | 2010-09-23 |
20100237845 | Charge current reduction for current limited switched power supply - Circuits and methods for a switched power converter providing charge power for at least one battery and at the same time delivering current to operate an electronic device, wherein the converter is enabled to operate out of current limit mode, for the maximum possible range of system load requirements, have been achieved. The input current of the power converter is measured within each cycle-by-cycle, i.e. within each cycle of an external clock reference and the charge current is reduced if the input current exceeds a defined portion, e.g. 80% of the maximum allowable input current. The power converter may only enter current limited operation after the charge current has been already reduced to zero. Operating out of current limit mode ensures a maximum efficiency of the converter, maximize the current deliverable to a given load and minimizes subharmonics in the output current and voltage, thereby minimizing interference with other system component. | 2010-09-23 |
20100237846 | CONTROLLING INLINE POWER AT AT POWERED DEVICE - A powered device includes a first switch, a second switch, and a controller. The first switch is disposed between a center tap of the first transformer and a center tap of the third transformer. The second switch is disposed between a center tap of the second transformer and a center tap of the fourth transformer. The controller is coupled to the first switch and the second switch. The controller is constructed and arranged to output a control signal to the first and second switches to electrically connect the center taps of the first and third transformers together and concurrently electrically connect the center taps of the second and fourth transformers together. The powered device is constructed and arranged to operate in 4-pair mode when the center taps of the first and third transformers are connected together and the center taps of the second and fourth transformers are connected together. | 2010-09-23 |
20100237847 | POWER SUPPLY CIRCUIT - A power supply circuit has a first MOSFET having a body region between the source and drain. The body region is connected so as to be at the same potential as the source. Application of a suitable potential to the gate causes the MOSFET to switch to a conductive on state. The power supply circuit also has signal generation circuitry, which generates a signal indicative of a conductive state of the first MOSFET. The signal generation circuitry generates a reference voltage of a predetermined potential difference from the source potential. The power supply circuit further comprises a second MOSFET having a body region connected so as to be at the same potential as the drain of the first MOSFET, and the second gate is connected to receive the reference voltage. When the potential of the drain of the first MOSFET falls a predetermined voltage below the reference voltage the second MOSFET is switched to a conductive on state between the second source and the second drain, the signal being dependent upon the state of the second MOSFET. | 2010-09-23 |
20100237848 | REFERENCE CIRCUIT WITH START-UP CONTROL, GENERATOR, DEVICE, SYSTEM AND METHOD INCLUDING SAME - A reference generator circuit generates a reference signal for use by a regulator in generating operational power for circuits and devices. A start-up circuit includes a self-biased voltage reference and a differential amplifier configured to generate a start-up signal to induce current flow in response to the voltage independent reference during the start-up phase of the circuit and cease inducing the current flow following the start-up phase of the circuit. The reference signal is generated by receiving a supply voltage and inducing current flow into a node of a bandgap reference circuit during a start-up phase of the bandgap reference circuit and ceasing inducing the current flow following the start-up phase of the bandgap reference circuit. | 2010-09-23 |
20100237849 | SIGNAL TRANSFORMER - A fast current generating element in a current generating unit, used by the present invention, provides a large current for accelerating the switching of transistor switches when the transistor switches are switched. The fast current generating element includes a capacitor to provide a large differential current when a voltage level transiently changes during the switching of the transistor switches. Therefore, a transient response time of a signal transformer is shortened. | 2010-09-23 |
20100237850 | Device and method for testing food quality - The device for testing food quality is a device for measuring the state of decay of a piece of food based upon measured electrical potential. The device includes a needle probe having an outer cylindrical shell formed from a first metal, such as stainless steel, and a wire mounted coaxially within the outer cylindrical shell. The wire is formed from a second metal, such as copper. A measuring device for electrical potential, such as a voltmeter, is further provided and is in communication with the needle probe. The device forms a galvanic cell when the probe is inserted into the food, the cell potential decreasing as a function of time in a manner corresponding to the state of decay of the piece of the food. | 2010-09-23 |
20100237851 | SYSTEM FOR COMPLEX IMPEDANCE MEASUREMENT - A measurement system is provided for measuring a complex transfer function of a system under test. The measurement system comprises a signal source for generating an input signal to be applied to the system under test, a signal detection device for detecting a response signal of the system under test in response to the input signal; and a signal analysing system for determining the gain and phase shift of the system under test by comparing the response signal to the input signal. The signal analysing system includes phase adjustment means to adjust a relative phase difference of the detected response signal and input signal; and curve fitting means to identify a phase difference adjustment of the phase adjustment means which gives the best fit of the response signal to the input signal. The phase measurement of the response signal is determined from the best fit phase difference adjustment. | 2010-09-23 |
20100237852 | Method for Determining the Phases in a Multi-Phase Electrical System and Device for The Implementation Thereof - A method and device for determining the phases in a multi-phase electrical system includes detecting a first waveform on a phase of the multi-phase system In a first position of the multi-phase electrical system timed data is stored, synchronized with the first waveform. A second waveform is detected in a second position of the multi-phase electrical system, on an indeterminate phase of the system. Data is obtained relative to the phase on which the second waveform was read on the basis of the phase shift between the timed data and the second waveform. | 2010-09-23 |
20100237853 | CURRENT MEASURING DEVICE - A current sensor is provided for non-invasively measuring electrical current in an electrical conductor. The current sensor includes a housing having a Hall effect device and circuitry for transmitting a signal indicative of the current flowing through the electrical conductor. The current sensor includes a base having a surface for supporting an electrical conductor. A magnetic shielding member is coupled to the surface to shield the Hall effect device from stray or external magnetic fields. A compliant member is coupled to the magnetic shielding member opposite the surface. The compliant member compresses to allow the current sensor to accommodate a large variety of electrical conductor sizes. The compliant member further acts to bias the electrical conductor against the Hall effect device. | 2010-09-23 |
20100237854 | Electromagnetic Profiling To Validate Electronic Device Authenticity - Counterfeit electronic devices are detected by comparing a thermal profile of the counterfeit device and an authentic device under predetermined operating conditions. A thermal profile for an authentic electronic device is recorded executing an instruction set over time, such as with static infrared images at predetermined times, video infrared images over a predetermined time period or temperature measurements made at predetermined locations of the electronic device. In one embodiment, a thermal profile indicates that a processor device has been used in the place of a field programmable grid array device. In an alternative embodiment, an electromagnetic profile is detected instead of or in addition to the thermal profile. The electromagnetic profile of an authentic device is used to create an expected profile for comparison with an electromagnetic profile of electronic devices under test. | 2010-09-23 |
20100237855 | Protective system for a multiple channel transformer probe - The invention provides a transformer probe for sensing movement of a body of magnetic material, having multiple output channels wherein the output in each output channel is substantially unaffected by faults in other output channels. The transformer probe comprises a magnetically energisable pole piece, a sensing circuit comprising an electrical circuit having a portion, remote from the pole piece, which forms first and second transformer primary coils, a first output circuit comprising a first transformer secondary coil, inductively coupled to the first primary coil via a first transformer core, and terminated by a first load resistance, and means for measuring an output signal from the secondary circuit, a second output circuit comprising a second transformer secondary coil, inductively coupled to the second primary coil via a second transformer core and terminated by a second load resistance and means for measuring an output signal from the second secondary coil, and an inductive coupling, or resistive electrical component, connected across each primary coil, having an impedance within the sensing circuit such that a change from a normal circuit condition to an open circuit condition within the first or second output circuit does not significantly affect the voltage across the first and second primary coils. | 2010-09-23 |
20100237856 | ARRANGEMENT FOR CONTACTLESSLY MEASURING A POSITION USING A MAGNETORESISTIVE SENSOR, AND METHOD FOR OPERATING THE ARRANGEMENT - The disclosure relates to an arrangement for contactlessly measuring a position using a magnetoresistive sensor, the displacement-proportional transfer characteristic of which has a plurality of ranges which are suitable for a position measurement and associated characteristic curve sections of which have both positive and negative gradients. The arrangement can be included in a position regulator which has control electronics which, with the aid of a microcontroller, receive one or more input signals and output actuating signals for controlling the actuating drive. A method is also disclosed for operating the arrangement. For example, to uniquely associate the direction of movement of the displacement pick-off shaft with the effective direction of the drive, at least one range sensor for detecting the characteristic curve range of the magnetoresistive measuring system, which is in the form of a magnetoresistor potentiometer, in which the position is measured, is proposed. The range sensor can be connected to the control electronics. The activity of each range sensor can be assigned a sign for the gradient of the characteristic curve section of the measuring system in which the position is measured, which sign can be used to infer the effective direction of the actuating drive. | 2010-09-23 |
20100237857 | STRINGLINE AND CROSS-LEVEL GAUGE - A tool and method for inspecting a track having a first rail and a second rail. The tool has a first mounting device which is attached to a first rail of the track. A cord attached to the mounting device is tensioned and positioning the cord in a proper position, allowing an inspector to measure a first distance between a defined point on the cord and the first rail or the second rail to determine if anomalies are present in the track. | 2010-09-23 |
20100237858 | MAGNETIC FIELD MEASUREMENT DEVICE - A magnetic field measurement device includes: a magneto-optical sensor that measures a first axial component of a magnetic field in the direction of a first axis that is arbitrarily set in the magnetic field that is to be measured; and a second magneto-optical sensor that measures a second axial component of the magnetic field in the direction of a second axis that form an angle q (02010-09-23 |
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20100237859 | CIRCUITRY, SYSTEMS AND METHODS FOR DETECTING MAGNETIC FIELDS - Circuitry for detecting magnetic fields includes a first magnetoresistive sensor and a second magnetoresistive sensor configured to form a gradiometer. The circuitry includes a digital signal processor and a first feedback loop coupled between the first magnetoresistive sensor and the digital signal processor. A second feedback loop which is discrete from the first feedback loop is coupled between the second magnetoresistive sensor and the digital signal processor. | 2010-09-23 |
20100237860 | CONTINUOUS WETTABILITY LOGGING BASED ON NMR MEASUREMENTS - A method for utilizing received formation data to determine one or more fluid instance such as reservoir wettability while in one of a subterranean environment or a surface environment. The method comprising: (a) obtaining at least one set of formation data wherein the set of formation data includes magnetic resonance data from two or more samples within an approximate common characteristic region in the reservoir; (b) computing from the at least one set of received formation data a first fluid instance of the one or more fluid instance using at least two mathematical variables from the group consisting of one of oil saturation, water saturation, T | 2010-09-23 |