09th week of 2009 patent applcation highlights part 18 |
Patent application number | Title | Published |
20090051278 | ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE HAVING SCATTERING MEMBER - An organic electroluminescent display device includes: a substrate; a lower electrode; an organic electroluminescent layer; and an upper electrode, in this order, wherein the organic electroluminescent display device further comprises a scattering member on or above the upper electrode. | 2009-02-26 |
20090051279 | ORGANIC ELECTROLUMINESCENT ELEMENT - A main object of the present invention is to provide an organic EL element which can ease damages of an organic EL layer upon formation of an electrode layer, and enables display of a high quality image. The present invention attains the above object by providing an organic electroluminescent element comprising: a substrate; a first electrode layer formed on the substrate; an organic electroluminescent layer which is formed on the first electrode layer, and has at least a light emitting layer; a semiconductor buffer layer which is formed on the organic electroluminescent layer, and contains an inorganic compound having a band gap of 2.0 eV or more and a metal; and a second electrode layer formed on the semiconductor buffer layer. | 2009-02-26 |
20090051280 | LIGHT-EMITTING DEVICE, METHOD FOR MANUFACTURING LIGHT-EMITTING DEVICE, AND SUBSTRATE PROCESSING APPARATUS - Disclosed is a light-emitting device including a first electrode; a second electrode opposite to the first electrode; and an organic layer that is formed between the first electrode and the second electrode and includes a light-emitting layer. The second electrode includes a conductive protection layer that is formed on the organic layer so as to protect the organic layer and a conductive main electrode layer that is formed on the protection layer. | 2009-02-26 |
20090051281 | POLYMERIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE AND METHOD FOR PRODUCTION THEREOF - A polymer compound for an organic electroluminescence device, which has a halogen element content of 50 ppm by mass or less. | 2009-02-26 |
20090051282 | luminous body - The present invention relates to an inorganic composition mainly containing a compound semiconductor, wherein the inorganic composition contains iridium element. The invention also relates to a method of producing an inorganic composite for producing an luminescent material, wherein the method comprises subjecting an inorganic composition mainly containing a compound semiconductor to an explosion by gunpowder and/or explosive in a sealed vessel. | 2009-02-26 |
20090051283 | LED DEVICE HAVING IMPROVED CONTRAST - A light-emitting diode device, including a substrate; and a reflective electrode and a semi-transparent electrode formed over the substrate and an unpatterned white light-emitting layer formed between the reflective electrode and the semi-transparent electrode, the reflective electrode, semi-transparent electrode, and unpatterned white-light-emitting layer forming an optical microcavity, and wherein either the reflective or semi-transparent electrodes is patterned to form a plurality of independently controllable light-emitting elements with at least one light-emitting element having no color filter. Color filters are formed over a side of the semi-transparent electrodes opposite the unpatterned white light-emitting layer in correspondence with the light-emitting elements, the color filters having at least two different colors. Additionally, a reflected-light absorbing layer is located over all of the light-emitting elements. | 2009-02-26 |
20090051284 | LED DEVICE HAVING IMPROVED LIGHT OUTPUT - An light-emitting diode device, including a substrate; and a reflective electrode and a semi-transparent electrode formed over the substrate and an unpatterned white light-emitting layer formed between the reflective electrode and the semi-transparent electrode, the reflective electrode, semi-transparent electrode, and unpatterned white-light-emitting layer forming an optical microcavity, and wherein either the reflective or semi-transparent electrodes is patterned to form a plurality of independently controllable light-emitting elements with at least one light-emitting element having no color filter. Color filters are formed over a side of the semi-transparent electrodes opposite the unpatterned white light-emitting layer in correspondence with the light-emitting elements, the color filters having at least two different colors. | 2009-02-26 |
20090051285 | Organic electroluminescence display device - An object of the present invention is to provide an organic electroluminescence (EL) display device having a high aperture ratio (ratio of light emitting area to pixel area) on both surfaces. The organic EL display device having a substrate includes on a surface of the substrate: a first organic EL element of a top emission type; a second organic EL element of a bottom emission type; a first circuit that drives the first organic EL element; and a second circuit that drives the second organic EL element. In the organic EL display device, the second circuit is arranged below the first organic EL element. | 2009-02-26 |
20090051286 | ELECTRONICS DEVICE, SEMICONDUCTOR DEVICE, AND METHOD FOR MANUFACTURING THE SAME - It is an object of the present invention to provide a high reliable EL display device and a manufacturing method thereof by shielding intruding moisture or oxygen which is a factor of deteriorating the property of an EL element without enlarging the EL display device. | 2009-02-26 |
20090051287 | Reflector Lamp - A reflector lamp, in particular a halogen reflector lamp, has a light-transmitting lamp vessel, in which at least one luminous member is accommodated, at least one vessel section of the lamp vessel being provided with a reflective coating. According to the invention, the reflective coating has an interference filter, which is substantially impervious to light in the visible wavelength range and has defined transmission and reflection properties for light in the infrared wavelength range. | 2009-02-26 |
20090051288 | PLASMA DISPLAY PANEL - A plasma display panel includes a front panel and a rear panel. The front panel includes a front substrate and a display electrode. The rear panel includes a rear substrate, a barrier rib, a data electrode, and a phosphor layer. The rear substrate is arranged while facing the front substrate to form a discharge space between the front panel and the rear substrate. The barrier rib is formed at the rear substrate to partition the discharge space, the data electrode is formed while intersecting the display electrode, and the phosphor layer is formed between the barrier ribs. The barrier rib is formed at the divided areas separately in a direction parallel to the data electrode, and the barrier ribs formed at the divided areas separately have different properties among the plurality of areas. A large-screen plasma display panel having a high-resolution display quality is easily realized by the above configuration. | 2009-02-26 |
20090051289 | PLASMA DISPLAY PANEL - A plasma display panel that achieves improved discharge efficiency and reduced discharge voltage is provided. The plasma display panel includes a substrate, a sustain electrode located on the substrate, a first dielectric layer located on the substrate formed with the sustain electrode, and a second dielectric layer located on the first dielectric layer and having a larger dielectric constant than a dielectric constant of the first dielectric layer. | 2009-02-26 |
20090051290 | Plasma display panel - A PDP includes a first substrate and a second substrate facing the first substrate, a frit glass layer between the first and second substrates, the frit glass layer having a closed geometrical cross-section to define a sealed space between the first and second substrates, a plurality of electrodes on the first substrate and facing the second substrate, the electrodes including electrode terminals, and a common bar extending along an edge of the first substrate to electrically connect the electrode terminals, the common bar being positioned in a region not overlapping with the frit glass layer. | 2009-02-26 |
20090051291 | ELECTRODELESS DISCHARGE LAMP AND LIGHTING APPARATUS USING THE SAME - In an electrodeless discharge lamp | 2009-02-26 |
20090051292 | Fluorescent lamp apparatus - Disclosed herein is a fluorescent lamp apparatus. The fluorescent lamp apparatus includes a main lamp tube emitting light, a subsidiary lamp tube disposed in communication with the main lamp tube, an external electrode provided to the subsidiary lamp tube, a connection terminal contacting the external electrode such that electric power is applied to the external electrode through the connection terminal, and an insulation cap receiving the connection terminal. The fluorescent lamp apparatus includes the external electrode exposed to the outside, so that installation and separation of the fluorescent lamp can be conveniently achieved. | 2009-02-26 |
20090051293 | DISPLAY HEAT DISTRIBUTION SYSTEM - A display heat distribution system provides a display assembly. LEDs are mounted in the display assembly and illuminate the display assembly. Heat generation structures are mounted into the display assembly. In addition, heat distribution structures are mounted into the display assembly in a predetermined physically distributed heat management configuration. The heat generation structures and the heat distribution structures are physically located to maintain the LED temperatures at substantially uniform temperatures. | 2009-02-26 |
20090051294 | DOOR ENTRY LIGHTING SYSTEM AND INTERIOR WELCOME LIGHTING SYSTEMS WITH AN ADDITIONAL SIGNAL FUNCTION - A door entry or interior Welcome lighting system for a motor vehicle includes a lamp and a control circuit. The lamp has at least one RGB-LED component with an LED shining red, an LED shining green, an LED shining blue and connecting lines for separately controlling the three LEDs. The control circuit is coupled to the connecting lines and receives control signals on control lines which indicate on the one hand the requirement for switching on the illumination and, on the other hand, at least one operational condition of a closure device of the motor vehicle. On receipt of the control signals indicating the requirement for switching-on the illumination, the control circuit controls the three LEDs, in a first control mode so that a continuous, white to yellow-white illumination of the door entry area or the motor vehicle interior is produced. In a second control mode, the control circuit controls the three LEDs, in dependence on the control signals indicating an operational state of the closure device, so that a coloured illumination is produced. The additional signal function enables the closure state of the closing device to be indicated to a user in a simple manner. | 2009-02-26 |
20090051295 | APPARATUS FOR RADIATING AN OBJECT WITH UV RADIATION - An apparatus for radiating an object with UV-radiation, the apparatus comprises a series arrangement of an incandescent lamp (LA | 2009-02-26 |
20090051296 | LED CONTROL METHOD - In one embodiment, an LED system is controlled to have a substantially unity power factor. | 2009-02-26 |
20090051297 | Frequency modulation method and device for high intensity discharge lamp - An electronic control gear for a HID lamp receives an input signal for operating the lamp and frequency modulates the input signal to generate a frequency modulated output signal that drives an arc of the lamp. The frequency modulation of the output signal sweeps continuously between a low frequency modulation and a high frequency modulation, the low frequency modulation being a frequency f | 2009-02-26 |
20090051298 | Multiple discharge lamp lighting device - A multiple discharge lamp lighting device in which lamp current of discharge lamps is equalized by using a circuit structure having transformers on both sides of the discharge lamps and in which the number of parts can be reduced. A multiple discharge lamp lighting device | 2009-02-26 |
20090051299 | LINEAR REACTOR BALLAST FOR SPORTS LIGHTING FIXTURES - A means and method for increasing use of a light from a high intensity lighting fixture to a target area without an increase in energy use. One aspect increases the electrical efficiency of transmission of electrical power from an electrical power source to the lamp such that for the same cost of electrical energy, more electrical energy is available for production of light. Conversely less electrical energy could be purchased to produce the same amount of light. In another aspect electrical components along the electrical service path can be utilized with increased electrical efficiency towards the same end. | 2009-02-26 |
20090051300 | METHOD AND DRIVING UNIT FOR DRIVING A GAS DISCHARGE LAMP - This invention describes a method for driving a gas discharge lamp ( | 2009-02-26 |
20090051301 | Interconnected Arrangement of Individual Modules Having at Least One Light-Emitting Diode Chip - An interconnected arrangement of a light-emitting diode chip arrangement having individual modules as luminous elements in a parallel circuit. Each module is provided with at least one light-emitting diode chip, and the modules are arranged in a parallel circuit. A respective linear constant current circuit connects each light-emitting diode chip arrangement to a common, current-carrying voltage source. At the start of an operation, the voltage source continuously increases the supply voltage over an operating range assigned to it. When a constant total current flowing over the parallel circuit is reached, the current-carrying voltage source fixes the associated supply voltage and maintains it unaltered. | 2009-02-26 |
20090051302 | PROGRAMMABLE ELECTRONIC CONTROL SYSTEM, IN PARTICULAR LIGHT CONTROL SYSTEM, FOR A MOBILE HOME, IN PARTICULAR A TRAILER AND/OR MOTOR HOME AND/OR A BOAT - Implementations of the present invention relate to an electronic control system for a mobile home, in particular a trailer, a motor home, or a boat. The electronic control system can include at least one electrical load, a control unit which actuates the load or loads, and at least one operator control unit with one or more first operating elements, with the operator control unit being connected to the control unit in such a way that said control unit can be controlled by means of the operator control unit. A predefined overall actuation state of the control unit can be in each case associated with the first operator control element or elements. Furthermore, the control unit can be configured in such a way that it actuates all the electrical loads of the electronic control system in a respectively predefined manner in each predefined overall actuation state. | 2009-02-26 |
20090051303 | Method and apparatus for controlling movement of a device - A method of controlling movement of a device includes the steps of actuating a motor to move the device; measuring the motor current; and controlling movement of the device in response to the motor current exceeding a motor current threshold. | 2009-02-26 |
20090051304 | VEHICLE, CONTROL METHOD THEREOF AND BRAKING DEVICE - During braking, lower limits are set based on an input limit of a battery and a brake pedal position, and the set lower limits limit regenerative torques output from motors. This prevents an output of an excessive braking force and torque shock caused by a hydraulic brake being not able to follow sudden changes in the regenerative torques output from the motors when the vehicle speed is reduced. | 2009-02-26 |
20090051305 | ELECTRONIC COMMUTATION METHOD AND RELATED APPARATUS - A method and apparatus for electronic commutation of a pulse width modulation (PWM) controlled motor involves temporarily increasing the frequency of one or more PWM drive signals applied to the motor upon the occurrence of an asynchronous commutation event. | 2009-02-26 |
20090051306 | Electric power tool, control unit and recording medium - An electric power tool includes a direct current motor, at least one switching device, a trigger switch, a control unit, and a drive unit. The control unit sets a driving duty ratio for PWM controlling the direct current motor so as to increase the driving duty ratio in a stepwise manner in accordance with an operation continuation time of the trigger switch during a period from when an operation of the trigger switch is started until when a predetermined start-up time has elapsed. | 2009-02-26 |
20090051307 | EXCESSIVE TEMPERATURE DETECTING SYSTEM OF ELECTRIC MOTOR CONTROLLER - An electric motor controller for a vehicle has a voltage detecting section for detecting the voltage of a filter capacitor inserted on a direct current side of an inverter device including a semiconductor element for large electric power; an electric current detecting section for detecting an output electric current of the inverter device; and a temperature detecting section arranged in a cooling means of the semiconductor element for large electric power. Loss generated by a switching operation of the semiconductor element for large electric power is sequentially calculated by outputs of the detecting sections. Excessive temperature is detected when junction temperature of the large electric power semiconductor element calculated by this loss reaches an allowable temperature. | 2009-02-26 |
20090051308 | SYSTEM AND METHOD TO DETERMINE ELECTRIC MOTOR EFFICIENCY USING AN EQUIVALENT CIRCUIT - A system and method for determining electric motor efficiency includes a monitoring system having a processor programmed to determine efficiency of an electric motor under load while the electric motor is online. The determination of motor efficiency is independent of a rotor speed measurement. Further, the efficiency is based on a determination of stator winding resistance, an input voltage, and an input current. The determination of the stator winding resistance occurs while the electric motor under load is online. | 2009-02-26 |
20090051309 | Process for driving an electric machine and driver system therefor - A method for operating an electric machine with a driver system is provided, in which an operating variable of the electric machine and/or of the driver system is monitored. The validity of the input variables is checked with regard to their checksum and whether the input variables are up-to-date, and the permissibility of an actual moment (Mist | 2009-02-26 |
20090051310 | Closed Loop Stepper Motor Control - System and method for controlling a stepper motor. A current position of the stepper motor may be received. A position error of the stepper motor may be determined using the current position of the stepper motor. A velocity profile may be maintained based on the position error, such that it tracks the position error. A position correction value may be determined based on the velocity profile, e.g., by integrating a portion of the velocity profile. A new position value may be generated to drive the stepper motor. An output position value to the stepper motor may be provided to drive the stepper motor. The output position value may incorporate the new position value and the position correction value and may be operable to reduce position error of the stepper motor. | 2009-02-26 |
20090051311 | SYSTEM AND METHOD FOR DETERMINING STATOR WINDING RESISTANCE IN AN AC MOTOR - A system and method for determining stator winding resistance in an AC motor is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of an AC motor. The circuit includes at least one contactor and at least one switch to control current flow and terminal voltages in the AC motor. The system also includes a controller connected to the circuit and configured to modify a switching time of the at least one switch to create a DC component in an output of the system corresponding to an input to the AC motor and determine a stator winding resistance of the AC motor based on the injected DC component of the voltage and current. | 2009-02-26 |
20090051312 | BATTERY CHARGER - A battery charger for wirelessly providing additional operating time for a cell phone with a depleted battery. The battery charger has a charging unit incorporated into a case. The charging unit has an external port, a cell phone charging port, and a rechargeable battery. A cell phone with a depleted battery is placed inside the case and plugged into the cell phone charging port. The rechargeable battery of the charging unit recharges the cell phone battery, without requiring that either the battery charger or the cell phone be plugged into an external power source. An ON/OFF switch allows the user to enable/disable recharging. A status indicator light indicates the status of the battery charger. When the battery in the charging unit is depleted, the user plugs the charger into a standard external power source to recharge. | 2009-02-26 |
20090051313 | Battery Charger - A battery charger capable of improving a visibility to a light emitting display portion for facilitating recognition of a charge state of a battery. The battery charger has a housing and a display unit including the light emitting portion protruding from an outer surface of the housing. | 2009-02-26 |
20090051314 | SELF-POWERED MAGNETIC GENERATOR - A power generation apparatus | 2009-02-26 |
20090051315 | System and Method for Information Handling System Battery Charge Protection and Fault Alarm - An information handling system battery has first and second protective circuits to detect and address faults for a first charge applied from an external power source to an integrated charger and a second charge applied from a charger of an information handling system to battery cells. If the first protective circuit detects a fault associated with the integrated charger, charging of the battery cells is still supported by inserting the battery in an information handling system. If the second protective circuit detects a fault, the battery becomes inoperative by disconnecting the battery cells. An indicator, such as LEDs on the battery casing, indicates whether a soft or hard fault has occurred. | 2009-02-26 |
20090051316 | BATTERY CHARGING DEVICE AND BATTERY WITH THE SAME - A battery charging device includes a power terminal unit to be connected to a power source and provided with power therefrom, a charging terminal unit to be connected to a power terminal of a battery, and a holding device to be fixed to side faces of the battery when the charging terminal unit contacts the power terminal of the battery. | 2009-02-26 |
20090051317 | MAN-POWERED SLIM CHARGER - A human-powered slim charger utilizing an axial flux alternator for converting a pull-out motion into an electrical current for charging and supplying battery-fed electronic devices. The charger comprises mechanical transmission means for converting a periodic linear movement into a unidirectional rotation, an axial flux alternator comprising a stator comprising a planar winding, having a plurality of coils embedded in multiple layers within said stator and circularly distributed around a central axis and two essentially identical rotors arranged to rotate together around said central axis and allocated concentrically with said winding on both sides of said stator facing each other; wherein each said rotor comprises a periodical heteropolar axially magnetized magnetic system having a definite number of poles; Finally, the device comprises a charging control module affixed to the stator, said control module configured effectively convert non-stable alternating current produced by said alternator into a charging direct current. | 2009-02-26 |
20090051318 | Pass Around Electrical Contacts - A battery comprises a housing, a plurality of contacts, and a pass around electrical contact. The housing includes a plurality of rechargeable cells. The plurality of contacts electrically couple to the rechargeable cells. The plurality of contacts are configured to couple to first corresponding contacts of an electronic device. The pass around electrical contact is electrically isolated on the battery from the plurality of contacts and is configured to couple to second corresponding contacts of the electronic device. The pass around electrical contact is further configured to be connected to at least one of an external power supply and a data source. | 2009-02-26 |
20090051319 | PHONE CHARGING STAND - A phone charging stand includes a casing and a cover. The casing has a socket on one surface to hold a phone, and a first universal serial bus (USB) connecting port on another surface of the casing is used to connect a wireless dongle having a USB interface. The cover is pivotally connected to one end of the casing. The cover can be rotated toward the socket to be attached to the casing to hold the phone. The cover can also be rotated toward the another surface of the casing to support the charging stand. | 2009-02-26 |
20090051320 | Rechargeable Battery and Method for its Operation - In order to provide rechargeable batteries with better characteristics, in particular for mobile electrical appliances, and in order to use rechargeable batteries in appliances, which are designed for use with rechargeable batteries of a different type, in particular with cells with a different cell voltage, the invention provides a rechargeable battery for operation with an external voltage which is applied at least at times to the output of the rechargeable battery and is below the output voltage of the rechargeable battery when in its fully charged state, which has at least one chargeable electrochemical cell, an electrical connection to the output of the rechargeable-battery for inputting and/or outputting electrical energy, a housing which surrounds the at least one chargeable electrochemical cell, and a control circuit for controlling the charging process of the rechargeable battery and/or the production of the rechargeable-battery voltage at the output of the rechargeable battery. The invention also provides a method for operation of a rechargeable battery such as this. | 2009-02-26 |
20090051321 | APPARATUS FOR ESTIMATING STATE OF CHARGE OF SECONDARY BATTERY - An apparatus for estimating a state of charge (SOC) of a secondary battery. A control section of a battery controller (ECU) computes a total amount of electric discharge of a secondary battery and compares the total amount of electric discharge with a predetermined threshold value. The threshold value is set so as to fall within a range of; for instance, 400 Ah to 1600 Ah. When the total amount of electric discharge is equal to or greater than the predetermined threshold value, an open-circuit-voltage (OCV)-SOC map is replaced with a map achieved in a state where a memory effect is saturated. When the total amount of electric discharge is smaller than the predetermined threshold value, a correction is made to the map so as to achieve a map that is a mixture consisting of the OCV-SOC map achieved in an initial state and the OCV-SOC map achieved in the saturated state at a predetermined ratio. The SOC is estimated by use of the corrected map. | 2009-02-26 |
20090051322 | Battery Control Device And Hybrid Forklift Truck Equipped With The Device - A battery control device and a hybrid forklift truck provided with an engine and battery-driven motor generator and equipped with the device with which control is performed so that excessive exhaustion or charging of the battery does not occur in operation of the forklift truck. | 2009-02-26 |
20090051323 | BATTERY PACK - A protecting circuit monitors a voltage of a secondary battery and supplies the signal to permit a discharge to a gate terminal of a discharge control FET when the voltage is equal to or more than a lower limit value in a rated voltage range. When the discharge control FET receives this signal, it is connected and passes a discharge current. In the other cases, it shuts off the discharge current. Further, when the voltage is equal to or more than a predetermined value, a signal of a voltage of a battery voltage or more is supplied from a voltage converter to the gate terminal. When the voltage is equal to or less than an upper limit value in the rated voltage range, the protecting circuit supplies the signal to permit a charge to a gate terminal of a charge control FET. Further, when the voltage is equal to or more than a predetermined value, the voltage output from the voltage converter is supplied to the gate terminal. A battery pack in which by applying the voltage of the battery voltage or more to the gate terminal, the discharge control FET and the charge control FET are controlled and an energy loss is suppressed to the minimum is provided. | 2009-02-26 |
20090051324 | BATTERY PACK AND METHOD FOR DETECTING DISCONNECTION OF SAME - The battery pack includes an assembled battery including a plurality of secondary battery cells connected at least in series; a voltage detector which detects a terminal voltage of each of the plurality of secondary battery cells; a charge/discharge controller which controls charge/discharge of the assembled battery based on the terminal voltage of each cell detected by the voltage detector; a short-circuiting section which short-circuits a node between cells to the high voltage side or the low voltage side of a power line, or which short-circuits nodes between the cells to each other; and a disconnection detector which controls conduction/non-conduction of the short-circuiting section and which detects a disconnection of the connection line from the voltage detector to the node between the cells, based on a state of controlling the conduction/non-conduction, and at least one of a voltage at the node between the cells detected by the voltage detector, a voltage of the high voltage side or the low voltage side of the power line, and a terminal voltage of each cell. The floating (disconnection) of intermediate taps of the secondary battery cells can be reliably detected without causing losses in regular processes. | 2009-02-26 |
20090051325 | AUTOMOTIVE POWER SYSTEM AND METHOD OF CONTROLLING SAME - A power source is electrically connected with a battery and an electrical load. The power source has an output voltage and provides current for the battery and electrical load. A charging voltage for the battery is determined based on temperature of the battery. An offset voltage is determined based on the provided current to the battery. The output voltage is determined based on the charging and offset voltages. | 2009-02-26 |
20090051326 | BATTERY OVERHEATING PROTECTION CIRCUIT - A battery overheating protection circuit includes a thermal resistor samples the temperature of the battery and converts the temperature into a temperature voltage, a comparison circuit compares the temperature voltage with a reference voltage for judging whether the temperature of the battery is higher than the maximum reference temperatures temperature or not. If yes, the comparison circuit outputs a protection signal to drive a charging module to stop charging the battery in the charging process, and to cut off the conducting path to draw power from the battery in the discharging process. The present invention sets two different maximum reference temperatures during charging process and discharging process by a reference voltage module, which makes the maximum allowable discharging temperature is higher than the maximum allowable charging temperature. | 2009-02-26 |
20090051327 | CHARGER SYSTEM FOR COMMUNICATION DEVICES - A charger system ( | 2009-02-26 |
20090051328 | BATTERY CHARGING APPARATUS - The battery charging apparatus is made with small and low-cost components. It includes a first transistor (T | 2009-02-26 |
20090051329 | METHOD AND CHARGE-UP CIRCUIT CAPABLE OF ADJUSTING CHARGE-UP CURRENT - A charge-up circuit includes a charge-up transistor configured to supply a charge-up current to a secondary battery in accordance with a control signal, a detection resistor connected in series with the charge-up transistor to detect the charge-up current, a current-to-voltage conversion circuit configured to generate and output a monitor voltage in accordance with the charge-up current based on each voltage at both end terminals of the detection resistor, a reference voltage generator configured to generate a predetermined reference voltage and including a voltage adjusting mechanism to generate the reference voltage from the constant voltage so that the charge-up current becomes a desired current, and a charge-up current control circuit configured to control the charge-up transistor so that the monitor voltage becomes the reference voltage. | 2009-02-26 |
20090051330 | Charging Device - There is provided a charging device capable of improving charging efficiency and reducing power consumption, thereby increasing a battery service life. The charging device charges a main capacitor ( | 2009-02-26 |
20090051331 | Method and Circuit for Controlling the Refresh Rate of Sampled Reference Voltages - The present invention relates to controlling the refresh rate of the reference voltage on a sampling capacitor (C | 2009-02-26 |
20090051332 | System and method for electric current and power monitoring and control of a generator - A control device measures a voltage drop across a conductor in a generator to determine and control the total generator output current. A temperature of the conductor is also measured to improve the accuracy. The control device may further improve on the accuracy by compensating for the electrical current through a field coil that may power the generator. The control device may be used in combination with a generator in a vehicle electrical system. Other system parameters may be monitored to improve on the system monitoring, diagnostics, and control. The generator may include a conductor comprising a process-controlled geometric shape. | 2009-02-26 |
20090051333 | SWITCHING POWER SOURCE APPARATUS AND CONTROL METHOD THEREOF - A switching power source apparatus includes a storage unit to store energy obtained from input power supplied to the storage unit, and to output at least of the stored energy as output power; a first switch; a second switch connected in series with the first switch, the series connection of the first switch and the second switch being connected to the storage unit; and a voltage clamp unit to clamp a level of a voltage applied across the series connection of the first switch and the second switch to a predetermined voltage or less. The first switch is turned on while the second switch is still turned off, and then the second switch is turned on after the first switch has been turned on to supply the input power to the storage unit from the series connection of the first switch and the second switch. | 2009-02-26 |
20090051334 | Droop circuits and multi-phase DC-DC converters - A droop circuit of a DC-DC converter is provided, wherein the DC-DC converter includes an output inductor coupled between an output of the DC-DC converter and a phase node for providing an output voltage. A current sense device is coupled between the phase node and the output of the DC-DC converter, includes an inductor coupled to the phase node and senses a current from the phase node. A first resistor is coupled to the current sense device. An amplifier circuit includes an amplifier having an inverting input, a non-inverting input coupled to the first resistor and an output directly connected to the inverting input, and a second resistor coupled between the inverting input and the output of the DC-DC converter. The amplifier circuit provides a droop current according to the second resistor and a voltage difference between the non-inverting input and the output of the DC-DC converter, and the voltage difference is related to the current. | 2009-02-26 |
20090051335 | Multi-phase DC-DC converter and method for balancing channel currents - A multi-phase DC-DC converter is provided. A plurality of switching sets are coupled to an output, wherein each switching set includes a phase node. A plurality of inductors are separately coupled between the phase nodes and the output. A sense circuit has a plurality of sense units separately coupled to the phase nodes, each sensing a signal from the corresponding phase node and generating a sensing signal. A PWM generator includes a plurality of subtracting units, each subtracting a first signal from one of the sensing signals to generate a difference signal, wherein the first signal is generated by summing each of the sensing signals divided by a predetermined value except for the one of the sensing signals. The PWM generator generates a plurality of PWM signals to balance the currents of the inductors according to the difference signals. | 2009-02-26 |
20090051336 | Integrating current regulator and method for regulating current - Current regulators and related methods for regulating a current through a load. The current regulator may include, for example, a first circuit configured to determine an amount of current that flows through the load; and a second circuit configured to cause a voltage to be applied across the load, the voltage having a duty cycle that depends on the amount of the current flowing through the load. | 2009-02-26 |
20090051337 | BIDIRECTIONAL POWER SUPPLY DEVICE - In a bidirectional power supply device, a DC-DC converter is connected such that the longer an ON time of the first switch becomes, the higher a voltage of a second positive terminal and a second negative terminal becomes. When stopping the supply of power from a first positive terminal and a first negative terminal to a second positive terminal and a second negative terminal, a control circuit turns OFF a third switch, and then operates a switching signal generation circuit so that the ON time of the first switch becomes a maximum. The switching signal generation circuit is operated so that the ON time of the first switch becomes a maximum with the third switch turned OFF in start-up when supplying power from the second positive terminal and the second negative terminal to the first positive terminal and the first negative terminal. | 2009-02-26 |
20090051338 | Constant current regulator with current sensing circuit loop - A constant current regulator includes a current sensing circuit loop connected to a switch unit of the constant current regulator to detect a current flowing through the switch unit and to generate a detection current that is in proportion to the current flowing through the switch unit. The detection current flows through a detection resistor to induce a detection voltage. A differential amplifier bases on a set voltage and the received detection voltage to generate an error voltage to a pulse width modulation controller, which in turn causes a gate driver circuit to control the switching operation of the switch unit thereby supplying a constant current to a load connected to an output voltage of the regulator. | 2009-02-26 |
20090051339 | DC-DC CONVERTER AND CONTROL CIRCUIT FOR DC-DC CONVERTER - A DC-DC converter prevents through current from flowing in an output transistor. A first transistor receives an input voltage. A second transistor is connected to the first transistor. A comparator is connected to the second transistor. The comparator detects current flowing through a choke coil based on the potential difference between two terminals of the second transistor to generate a switching control signal for turning the second transistor on and off. The second transistor and the comparator form an ideal diode. A control circuit of the DC-DC converter generates an activation signal for turning the first transistor on and off based on a pulse signal to keep an output voltage constant. A through current prevention pulse generation circuit generates a pulse signal for turning off the second transistor from before the first transistor is turned on to after the first transistor is turned on. | 2009-02-26 |
20090051340 | LINEAR TRANSCONDUCTOR FOR A ONE-CYCLE CONTROLLER, NOTABLY FOR A DC-DC SWITCHING CONVERTER - A linear transconductor (LT), for instance for a one-cycle controller (OC), comprises i) an operational amplifier (OA) having non-inverting (+) and inverting (−) inputs, a power supply input intended to be connected to a DC voltage (V | 2009-02-26 |
20090051341 | BANDGAP REFERENCE CIRCUIT - A bandgap reference circuit includes a PTAT current generating circuit for generating a PTAT current; a CTAT circuit generating circuit for generating a CTAT current; a node for receiving the PTAT current and the CTAT current; and, a first resistor connected between the node and a ground, wherein a reference voltage is derived from the first resistor when a superposed current of the PTAT current and the CTAT current is flowing through the first resistor. | 2009-02-26 |
20090051342 | BANDGAP REFERENCE CIRCUIT - A bandgap reference circuit includes an input circuit having a first FET, a second FET, and a first resistor, wherein a first node is connected to the first FET having a first threshold voltage, the first resistor is connected between a second node and the second FET having a second threshold voltage; a mirroring circuit for controlling two output currents respectively derived from the first and second nodes, and maintaining the two output currents to a specific current ratio; and an operation amplifier connected to the first node, the second node of the input circuit, and the mirroring circuit, for controlling two voltages respectively at the first and second nodes of the input circuit to a specific voltage ratio; wherein the first FET and the second FET are both operating in the subthreshold region, the first threshold voltage is larger than the second threshold voltage, and the two output currents are independent of temperature. | 2009-02-26 |
20090051343 | Reference voltage generation circuit, drive circuit, light emitting diode head, and image forming apparatus - A reference voltage generation circuit includes a current-mirror circuit formed of a plurality of MOS (Metal Oxide Semiconductor) transistors each having a source terminal connected to a power source and a gate terminal connected to with each other; and a plurality of transistors each connected to a drain terminal of each of the MOS transistors of the current-mirror circuit for controlling the current-mirror circuit, so that an output current of the current-mirror circuit is converted to a voltage to be output as a reference voltage. Each of the MOS transistors of the current-mirror circuit has the drain terminal connected to a collector terminal of each of the transistors. Accordingly, when a voltage of the power source varies, it is possible to maintain a collector voltage of each of the transistors at a specific level and a collector current of each of the transistors constant. | 2009-02-26 |
20090051344 | TRIAC/SCR-BASED ENERGY SAVINGS DEVICE, SYSTEM AND METHOD - A TRIAC/SCR-based energy savings device, system and method ( | 2009-02-26 |
20090051345 | Self-oscillating switching regulator - A self-oscillating switching regulator includes a control winding N | 2009-02-26 |
20090051346 | Voltage Conversion Device and Vehicle - A DC/DC converter includes a reactor, IGBT devices, a dead time generation unit, and a DC-CPU. The dead time generation unit operates in response to a reference signal for a duty ratio, to output first and second activation signals provided with an inactive period corresponding to a dead time preventing both of the IGBT devices from conducting. The DC-CPU corrects a tentative duty ratio calculated as based on a voltage control value, in accordance with a value of a current flowing through the reactor, to output the reference signal. Preferably the DC-CPU associates the value of the current of the reactor with three states and when the value approaches a value at which a state transitions to a different state, the DC-CPU gradually switches a correction value. | 2009-02-26 |
20090051347 | HIGH FREQUENCY DELAY CIRCUIT AND TEST APPARATUS - A high frequency delay circuit operable to output a high frequency signal delayed for a desired delay time. The high frequency delay circuit includes: a variable delay circuit operable to receive a reference signal of which a frequency is lower than the high frequency signal, and to output a delay reference signal delayed from the reference signal for the desired delay time in advance; and a multiplier operable to generate the high frequency signal, of which a frequency is a frequency of the delay reference signal multiplied by a predetermined value, and to output the generated high frequency signal at timing according to a phase of the delay reference signal. | 2009-02-26 |
20090051348 | SELF-CALIBRATING FILTER - Techniques for self-calibrating filtering circuits with feedback are described herein. | 2009-02-26 |
20090051349 | WHEEL SPEED SENSOR - A speed sensor assembly includes a bearing having a first race, a second race, a plurality of ball bearings separating the first race from the second race, and a tone wheel coupled to the second race. The speed sensor assembly also includes a spacer abutting the first race and a sensor positioned adjacent the tone wheel. | 2009-02-26 |
20090051350 | DEVICE AND PROCESS FOR DETECTING PARTICLES IN A FLOWING LIQUID - A process and device for detecting electrically conductive particles in a liquid flowing in a pipe section, the liquid being exposed to periodic alternating electromagnetic fields by a transmitter coil which induces eddy currents in the particles, a probe made as a coil arrangement and which has an effective width producing a periodic electrical signal based on the eddy currents. The signal ha a carrier oscillation with an amplitude and/or phase which is modulated by particles passing across the effective width of the coil arrangement, the probe signal being filtered by a frequency-selective first filter unit, the filtered signal being sampled by a triggerable A/D converter stage to obtain a demodulated digital measurement signal, the digital measurement signal being filtered by a digital, frequency-selective adjustable second filter unit to obtain a useful signal, and the useful signal being evaluated to detect passage of electrically conductive particles in the pipe section. | 2009-02-26 |
20090051351 | Sensor System and Method for Determining an Angle of Rotation - A sensor arrangement for detecting an angle of rotation of a rotating body. At least one first sensor and one second sensor are connected to one another in a cascade in such a manner that the sensor signal from the first sensor is converted into a first control current which is applied as a bias current to the second sensor, the two angular dependencies of the first and second sensors being multiplied. This achieves improved interpolation when determining the angle of rotation on the basis of the sensor signals provided by the sensor arrangement. | 2009-02-26 |
20090051352 | STEERING ANGLE SENSOR - A steering angle sensor assembly | 2009-02-26 |
20090051353 | POSITION DETECTOR INCLUDING MAGNETORESISTIVE ELEMENTS - A circular top surface of a magnet is magnetized to the N-pole, and a back surface thereof is magnetized to the S-pole. A detector moves within the X-Y plane at positions located away from the top surface of the magnet. A pair of X-direction detecting elements and a pair of the Y-direction detecting elements are provided in the detector. In the X-direction detecting elements, the directions of a bias magnetic field provided to free magnetic layers are opposite to each other. When the detector moves in the Y direction, a decrease in the sensitivity of one of the X-direction detecting elements is compensated for by an improvement in the sensitivity of the other element. This also applies to the Y-direction detecting elements. Accordingly, position detection outputs of the X direction and the Y direction can be accurately obtained from the detector. | 2009-02-26 |
20090051354 | PULSAR RING FOR MAGNETIC ENCODER - A pulsar ring for a magnetic encoder comprises an annular holder attached to an outer periphery of a rotary side member, and a pulsar main body made of a rubber-like elastic material mixed with magnetic powder, magnetized to have multiple poles, and adhered integrally to the holder, wherein a plurality of notches are formed at predetermined intervals in a circumferential direction on a peripheral edge of the holder, and the pulsar main body is adhered to the holder so that a peripheral edge of the pulsar main body covers the peripheral edge including the notches of the holder, thereby to improve adhesive strength between the annular holder and pulsar main body. | 2009-02-26 |
20090051355 | Proximity sensor and proximity detection method - A proximity sensor for detecting proximity of a metal, wherein a driving signal is output to a resonant circuit that includes a capacitor connected to a detecting coil, and the proximity of the metal is detected based on a phase shift of freely oscillating waves that are attenuatedly output from the resonant circuit after an output of the driving signal is stopped, the proximity sensor includes a controller that outputs the driving signal to the resonant circuit; and measures a phase shift of oscillating waves that is involved in the proximity of the metal based on the freely oscillating waves that are attenuatedly output from the resonant circuit after the output of the driving signal is stopped. | 2009-02-26 |
20090051356 | PROXIMITY SENSOR - In a proximity sensor | 2009-02-26 |
20090051357 | MAGNETIC DETECTION DEVICE AND ELECTRONIC APPARATUS EQUIPPED WITH THE SAME - A magnet is contained in a display housing and is supported by a slidable operating member. A control housing contains a magnetoresistance effect element. Slidable shifting of the operating member causes an external magnetic field in a positive (+) direction and an external magnetic field in a negative (−) direction to enter the magnetoresistance effect element from the magnet at different timings, thereby changing the electric resistance of the magnetoresistance effect element. Accordingly, when the operating member is slidably shifted, a switching operation between predetermined modes is performed on the basis of a change in the resistance of the magnetoresistance effect element. | 2009-02-26 |
20090051358 | Flaw Detector and Flaw Detection Method For Silicon Layer of Wafer - The present invention is achieved for the purpose of easily detecting a crack or flaw existing in the silicon layer of a wafer in a short period of time. The flaw detector thus provided includes a coil sensor placed at a predetermined distance from the surface of the silicon layer; a radiofrequency applier for applying a radiofrequency to the coil sensor; a scanner for relatively moving the silicon layer and the coil sensor with a constant distance between the surface of the silicon layer and the coil sensor; and a crack detector for detecting a crack or flaw existing in the silicon layer by detecting the change of a signal provided from the coil sensor or the change in the radiofrequency applied by the radiofrequency applier. The frequency of the radiofrequency applied by the radiofrequency applier may be set between 5 MHz and 200 MHz. This enables a flaw detection for a silicon layer which has been considered to be impossible. In the case where the silicon to be flaw-detected is low resistivity silicon, the frequency applied may be set between 0.5 MHz and 200 MHz. | 2009-02-26 |
20090051359 | SYSTEM AND METHOD FOR MEASURING FORMATION TEMPERATURE AND/OR PRESSURE USING NUCLEAR QUADRUPOLE RESONANCE - A system for measuring at least one of a temperature and a pressure of an earth formation is disclosed. The system includes: a downhole tool disposed in a borehole and configured to be movable within the borehole; at least one nuclear quadrupole resonance (NQR) measurement device including a transmitter configured to emit a radiofrequency magnetic field having at least one selected frequency band into the earth formation to cause a component thereof to produce a NQR signal, and a detector configured to detect the NQR resonance signal; and a processor in operable communication with the measurement device and configured to generate NQR data from the NQR signal and calculate at least one of the temperature and the pressure of the earth formation therefrom. A method of measuring at least one of a temperature and a pressure of an earth formation is also enclosed. | 2009-02-26 |
20090051360 | Method for the Acquisition of Data Relating to Multi-Dimensional NMR Spectra By Means of Frequency-Dependent Convolution - In a method for the acquisition of data relating to multi-dimensional NMR spectra (designated as the SHARC protocol—SHaped, ARrayed aCquisition Protocol), crossed signals are shifted at will in frequency space using selective pulses and frequency dependent folding. | 2009-02-26 |
20090051361 | DNP APPARATUS - A coolant sub-assembly is provided for use in a DNP apparatus. The sub-assembly comprises a plurality of concentric jackets surrounding an inner bore tube having first and second opposed ends. The jackets are adapted to inhibit heat flow to the inner bore tube, a DNP working region being defined within the inner bore tube where a DNP process will be performed on a sample in the DNP working region. A coolant supply path extends adjacent an outer surface of the inner bore tube at the DNP working region in order to cool said outer surface, whereby a sample holder assembly can be inserted through the first end of the inner bore tube to bring a sample holder into the DNP working region and can be moved through the second end of the inner bore tube. An auxiliary coolant supply path supplies coolant to a sample, located in use in the sample holder at the DNP working region, through at least one aperture in the inner bore tube wall at the DNP working region. One or both ends of the inner bore tube opens into a coolant waste path for conveying coolant away from the inner bore tube, and wherein the coolant, auxiliary coolant, and waste paths are coupled to pumping means in use to cause coolant to pass along the coolant, auxiliary coolant and waste paths. | 2009-02-26 |
20090051362 | Antenna unit for a PET/MRI scanner - An antenna unit for a PET/MRI scanner is disclosed, including a supporting tube in which at least one antenna for MR signals is arranged. In at least one embodiment, the supporting tube has at least one permeable section and one impermeable section, the permeable section of which has a greater permeability to PET quanta than the impermeable section. The antenna unit further includes a screen for radio-frequency signals which is arranged outside of the supporting tube and surrounds the latter. In at least one embodiment, an intermediate layer is arranged between the supporting tube and the screen and, in the region of the permeable section of the supporting tube, is composed of, at least in part, a material which has a permeability to PET quanta comparable to the permeable section. | 2009-02-26 |
20090051363 | CIRCULATOR AND MAGNETIC RESONANCE DEVICE - A circulator has a ferrite, and the circulator is arranged in the vicinity of a device that produces a static magnetic field in the environment surrounding the device, this static magnetic field giving the circulator a non-reciprocal behavior, with respect to circulation of energy among the gates of the circulator, as a result of interaction of the ferrite with the static magnetic field. A magnetic resonance apparatus embodies such a circulator, and the basic field magnet of this magnetic resonance apparatus generates the static magnetic field. | 2009-02-26 |
20090051364 | Onboard Battery Management Device - A battery management device is provided for accurately measuring in a simple manner the internal resistance (reciprocal of conductance) of a battery that serves as the determination reference of the deterioration level of a battery without the application of an AC voltage to the battery while the battery remains onboard, and determining and displaying the deterioration level of the onboard battery. The onboard battery management device has sensors | 2009-02-26 |
20090051365 | METHOD AND APPARATUS FOR MEASURING A PARAMETER OF A VEHICLE ELECTRICAL SYSTEM - An automotive vehicle electrical system tester is provided for testing an electrical system having wiring which couple a load to a battery. The automotive vehicle electrical system tester is configured to measure an electrical parameter of the wiring and includes a first battery terminal connection configured to couple to a first terminal of the battery. A test connection is configured to couple to a wire of the electrical system which extends between the first terminal of the battery and the load. Test circuitry coupled to the first battery terminal connection and the test connection is configured to draw current from the battery along a path through the wire and to the test connection. The test circuitry measures an electrical parameter of the wire. | 2009-02-26 |
20090051366 | TEST SYSTEM AND DAUGHTER UNIT - Provided is a test system that tests a device under test, the test system including: a test head that includes a test module that generates a test signal to be supplied to the device under test; a performance board that is mounted above the test head and conveys the test signal generated by the test module; and a daughter unit that is detachably mounted to the performance board, and conveys the test signal from the performance board to the device under test, where the daughter unit includes: a socket to which the device under test is mounted; a daughter board to which the socket is mounted; and an enclosure that accommodates therein the socket and the daughter board, and includes a daughter-unit shield that cuts off noise from outside with respect to the socket and the daughter board. | 2009-02-26 |
20090051367 | METHOD OF DETECTING DISCONNECTION AND POWER DISCONTINUITY OF I/O UNIT CONNECTED TO NUMERICAL CONTROLLER - A power discontinuity occurring in any one of a plurality of I/O units connected to a numerical controller is detected. When the power discontinuity occurs in any one of the I/O units, the I/O unit detects the power discontinuity, and transmits the detection of the power discontinuity to an I/O unit in front of the I/O unit, at a timing different from a timing of an ordinary communication, in the form of a communication packet having a data pattern different from an ordinary data pattern. When the front I/O unit receives the communication packet, the communication packet is stored in a memory as power discontinuity detection information. | 2009-02-26 |
20090051368 | LOAD TESTING CIRCUIT - A load testing circuit a circuit tests the load impedance of a load connected to an amplifier. The load impedance includes a first terminal and a second terminal, the load testing circuit comprising a signal generator providing a test signal of a defined bandwidth to the first terminal of the load impedance, an energy-storing element being connected to the second terminal of the load impedance and providing an output signal, and a measuring unit that measures the output signal or compares the output signal with a reference. | 2009-02-26 |
20090051369 | SYSTEM AND METHOD FOR MEASURING ADHESION FORCES IN MEMS DEVICES - A MEMS test device comprises a flexible beam spaced apart from an optical stack. The MEMS test device includes a reflective layer and a partially reflective layer, such that a change in the position of the MEMS test device can be observed without the use of an external interferometer. The flexible beam may be cantilevered or fixed at each end. The flexible beam may include a shoe suspended from the side of the beam facing the optical stack, to provide a fixed contact area. An array of MEMS test devices may be used to determine compliance, or to calculate adhesion forces. | 2009-02-26 |
20090051370 | METHOD OF ADJUSTING MOVING POSITION OF TRANSFER ARM AND POSITION DETECTING JIG - In the present invention, a position detecting substrate having a capacitive sensor is supported on a transfer arm and transferred by the transfer arm and mounted on a mounting part. The capacitive sensor on the position detecting substrate then detects a position of a target object on the mounting part to detect a mounting position of the position detecting substrate on the mounting part. Based on the mounting position of the position detecting substrate, the moving position of the transfer arm when transferring a substrate is then adjusted. | 2009-02-26 |
20090051371 | CAPACITANCE TYPE SENSOR - A capacitance type sensor good in operability and less in erroneous operation is provided. Switches SW | 2009-02-26 |
20090051372 | 3D fluid confined sample stream coulter flow cytometry - A microfluidic flow cytometry device includes a substrate and transverse electrodes formed on the substrate. An elastomer microfluidic focusing channel system formed on the substrate focuses a sample stream onto the floor of an outlet channel that is substantially wider and taller than cells or particles of interest and that has the transverse electrodes disposed in its floor upstream of an exit site. A step in the outlet channel upstream of the transverse electrodes vertically confines sample stream flow onto the floor of the outlet channel over the transverse electrodes. Buffer inlet channels introduce a buffer stream for horizontal focusing of the sample stream into the central region of the outlet channel at the transverse electrodes. A sample inlet channel is smaller in vertical height than the buffer inlet channels for introducing a sample stream such that the buffer vertically focuses the sample stream away from the top of the outlet channel. Sensitivity of detection is good enough to conduct both qualitative and quantitative analysis. Detection and analysis circuitry can be optimized to conduct analyze real and imaginary impedance at frequencies optimized toward tagged particles and or cells, and assays are possible. | 2009-02-26 |
20090051373 | GAS SENSOR CONTROL APPARATUS - A gas sensor control apparatus for controlling a gas sensor includes a resistance detection unit and a heater control unit. The resistance detection unit detects a resistance of an object cell of the gas sensor. When the resistance of the object cell is lower than a predetermined threshold, the heater control unit controls energization of a heater such that the resistance detected by the resistance detection unit is a first predetermined resistance. Subsequently, after elapse of a predetermined time, the heater control unit further controls energization of the heater in such a manner that the resistance detected by the resistance detection unit is a second predetermined resistance of a resistance value that is higher than that of the first predetermined resistance. | 2009-02-26 |
20090051374 | Method and Device for Determining the Humidity Content of An Insulation of A Transformer - A method and a device for determining a humidity content of an insulation of a transformer, the insulation having a liquid. At least one dielectric property of the insulation is measured, an uncorrected humidity content of the insulation and a conductivity of a liquid which is included in the insulation is derived from a model of the insulation, said model being chosen depending on the measured dielectric property of the insulation, and the humidity content of the insulation is corrected by means of the conductivity. | 2009-02-26 |
20090051375 | Method and apparatus for measuring metallic area-specific resistance - To measure the area specific resistance of a metallic surface, silver paste is applied on a first surface of a metal plate. The silver paste is dried and molded into a desired shape; then it is sintered at a temperature close to the melting point of silver and turned into a silver foil, forming non-porous contact with the first surface. The second surface (reverse surface) is polished. First and second wires are connected to the silver foil by a silver drop. Third and fourth wires are spot welded to the second surface of the metal plate within the covered area right under the silver foil. The first and third wires are connected to the positive and negative electrodes of a power supply, and the second and fourth wires to the positive and negative electrodes of a voltmeter. A current I is provided. The temperature of the metal plate is first raised to a suitable point not close to the melting point of silver for sintering the silver drop attaching the first and second wires. Then the temperature is adjusted and retained at a point for measurement for a period of time. The voltage V is read. The area A of the silver foil is determined by digital optical instrument and software. Thus, the area specific resistance of the first surface of the metal plate can be calculated as V/(I/A). | 2009-02-26 |
20090051376 | METHOD FOR INFLUENCING SOOT DEPOSITS ON SENSORS - A method is described for controlling the soot deposition on sensors. A sensor element is provided, which includes a first electrode and a second electrode. Different measuring voltages U | 2009-02-26 |
20090051377 | Probe card and method for assembling the same - A probe card and a method for assembling the same, the probe card comprises a base plate, a plurality of probes, a fixing ring, and a fixing member. The fixing ring is provided with a hole and the outer wall of its bottom is used for connecting the probes. The fixing ring is spaced from the probes in a distance so that when the fixing ring is inserted through a hole of the base plate, the terminal ends of main bodies of the probes are located under the hole while the anterior ends are electronically connected with the base plate or outer circuit. The fixing member is inserted through the hole of the fixing ring, the terminal end of which protrudes out of the hole so that a micro strip line is formed between the terminal end of the fixing member and the terminal ends of the probes. | 2009-02-26 |