21st week of 2009 patent applcation highlights part 21 |
Patent application number | Title | Published |
20090128058 | Overload Protection Circuit - A current shut-off overload protection circuit useful for fluorescent lamp ballast protection and the like has at least one power transistor for supplying a load current to a circuit load, a protection circuit comprising a current sensing resistance connected for developing a voltage drop related to the circuit load, and a switching diode having a control input operative for turning off the power transistor by removing a bias level, as by grounding the transistor base, responsive to a preset level of the voltage drop such that the load current to the load is switched off upon the load current exceeding a maximum acceptable load current represented by a preset level of the voltage drop. | 2009-05-21 |
20090128059 | CONTROL DEVICE FOR CONTROLLING THE COLOR OF LIGHT EMITTED FROM A LIGHT SOURCE - The invention relates to a control device ( | 2009-05-21 |
20090128060 | Extended Life LED Fixture with Central Controller and Multi-Chip LEDS - An LED fixture includes multiple LED drivers and a multi-chip LED package so that the lifetime of the fixture is a multiple of the lifetime of a conventional fixture that uses only a single LED driver. A central controller activates and deactivates the LED drivers so that different subsets of LEDs within the LED package are driven sequentially. An optional multi-chip LED driver concurrently drives multiple subsets of LEDs that were previously driven by the LED drivers. | 2009-05-21 |
20090128061 | Methods and systems for operating and controlling theatrical lighting - A system and method for increasing a number of lights operated and/or controlled by dimmer boxes of theatrical light systems. In one embodiment, a master box is coupled to a chain of slave boxes in series. The master box receives a control signal and generates a switching signal for controlling the master box and the slave boxes. The switching signal is transmitted from the master box to the slave boxes through the series connections. Each of the master box and the slave boxes include a light signal input and a plurality of light signal outputs, and select among the plurality of light signal outputs according to the switching signal. | 2009-05-21 |
20090128062 | Electric power tool - An electric power tool, which comprises a motor that drives a tool, a power source unit that applies voltage to the motor, a main switching circuit that makes/breaks an electrical connection between the power source unit and the motor, an illuminator that illuminates a work spot, a switching device that electrically connects the illuminator to the power source unit, and an OR circuit that is electrically connected to terminals of the motor to the base terminal is provided. The OR circuit electrically connects one of the motor terminals at which a voltage is higher to the base terminal. | 2009-05-21 |
20090128063 | METHOD FOR DRIVING VIBRATION CUTTER - A method for driving a vibration cutter includes inputting an alternate current in an actuator section to vibrate a plate-like blade connected to the actuator section, wherein the blade section is vibrated in a plate face direction and a thickness direction of the blade section. | 2009-05-21 |
20090128064 | Actuation device having shape memory alloy component - The present invention provides an actuation device having a shape memory alloy component. The present invention utilizes a length contraction occurred to the shape memory alloy component during its phase transformation from martensite to austenite. The length contraction causes a slider, a carrier and a base to move relatively. Also, the present invention utilizes thermal conductivity of the base to speed up heat dissipation of the shape memory alloy component, so that response time for actuating the carrier can be reduced. | 2009-05-21 |
20090128065 | FAN WITH SOFT START FUNCTION - A bathroom ventilator fan with the soft-start function includes an impeller and a motor. The motor is coupled to the impeller for driving the impeller to rotate. The motor has a control module for driving and controlling the rotation speed of the motor according to a soft-start signal. The soft-start signal includes a soft-start section and a target-driving section. The control module slowly increases the rotation speed of the motor from the soft-start section to reach the target-driving section. | 2009-05-21 |
20090128066 | Rotation speed controlling system for shredder motor - A system for controlling the rotation speed of a shredder motor is disclosed. It consists of a bridge rectifier circuit, a forward/reverse controlling switch, a motor speed switch, and AC motor coils. By changing a switch, it is possible to activate the following four modes: forward fast, reverse fast, forward slow, and reverse slow. A user can thus operate a shredder at high torque and low rotation speed or high rotation speed and low torque depending on the number of sheets to be shredded. | 2009-05-21 |
20090128067 | INTERFACE CORD AND SYSTEM INCLUDING AN INTERFACE CORD - An interface cord is operable to connect an external controller to an electrical machine. The interface cord includes a first connector having a first pin configuration, a cable coupled to the first connector, a second connector coupled to the cable and having a second pin configuration different from the first pin configuration, and a circuit board with a programmable electrically coupled in circuit between the first connector and the second connector. | 2009-05-21 |
20090128068 | INTERFACE CORD AND SYSTEM INCLUDING AN INTERFACE CORD - An interface module is operable to download data from an electrical machine. The interface module includes a cable for transferring data, the cable having a first connector at a first end thereof, a circuit board having a programmable device electrically coupled in circuit to the cable, and a memory connected to the circuit board and configured to store data related to the operating characteristics of the electrical machine. | 2009-05-21 |
20090128069 | Motor Control Apparatus and Control Apparatus for hybrid Electric Vehicles - To provide a motor control apparatus that uses an inverter to drive an AC motor and hybrid automotive control apparatus adapted to drive an AC motor by use of an inverter while reducing torque pulsations during switching from PWM driving to rectangular-wave driving. | 2009-05-21 |
20090128070 | Brushless DC Motor with Reduced Current Ripple - A commutation circuit for driving a brushless DC motor is controlled according to a commutation cycle composed of alternating primary steps and transitional steps. The commutation circuit includes pairs of field effect transistors coupled in series between the high voltage and low voltage terminals of a DC power supply. Output terminals between each pair of transistors are individually coupled to the phases of a DC motor. A controller operates the commutation circuit to selectively set the phases at active and inactive states. The controller further employs a plurality of voltage control functions individually associated with the motor phases to selectively modulate the voltage applied to one of the phases during the active states, to provide transitional steps in the commutation cycle during which the applied voltage is modulated to reduce its magnitude with respect to the high voltage or the low voltage. | 2009-05-21 |
20090128071 | Extrapolation of Back EMF Signals in Brushless DC Motors - A controller is provided for operating a DC motor through a commutation circuit and for synchronizing the commutation circuit to motor position and speed by measuring back EMF voltages along commutation cycle steps during which the measured phase is not being driven. In connection with each such step, the back EMF voltage is measured at two points offset from the center of the step. The controller uses the measured voltages and their corresponding locations to locate the center point of the step through extrapolation. The motor can be analyzed for determining suitable locations for the measuring points. | 2009-05-21 |
20090128072 | DUAL LANE CONTROL OF A PERMANENT MAGNET BRUSHLESS MOTOR USING NON-TRAPEZOIDAL COMMUTATION CONTROL - A motor control system and method implements non-trapezoidal motor control and meets established “fail passive” regulatory guidelines. In particular, a system and method of controlling a multi-phase brushless motor that includes a multi-pole permanent magnet rotor, and an individual, electrically isolated stator winding associated with each phase that includes a first terminal and a second terminal. A motor command is supplied to a motor control. The motor control is configured such that the first terminal of each stator winding is selectively coupled to a power source at a first duty cycle, and the second terminal of each stator winding is selectively coupled to a power source asynchronously with the first terminal of each stator winding at a second duty cycle. | 2009-05-21 |
20090128073 | Brushless Motor Control Method and Brushless Motor - In a brushless motor for an electric power steering device having a configuration of 2 poles and 3 slots, or of an integral multiple thereof, a stator coil is supplied with current containing a higher harmonic component. A difference of 0.5% to 1.5% is provided between the higher harmonic component content rate of the stator coil current and the higher harmonic component content rate of the induced electromotive force generated in the stator coil with rotation of a permanent magnet, thereby mitigating the influence by an armature reaction generated in the induced electromotive force to reduce torque ripples. The difference between the higher harmonic component content rates is set on the basis of a change that occurs in the induced electromotive force due to the armature reaction at a time of supplying electricity to the armature coil. | 2009-05-21 |
20090128074 | INITIAL ROTOR POSITION DETECTION AND START-UP SYSTEM FOR A DYNAMOELECTRIC MACHINE - A method for detecting an initial rotor angular position and starting a dynamoelectric machine having a stator and a rotor includes the steps of driving the dynamoelectric machine into partial magnetic saturation to determine the initial rotor angular position of the dynamoelectric machine, and starting the dynamoelectric machine utilizing the initial rotor angular position previously determined. | 2009-05-21 |
20090128075 | MOTOR - A stator of a motor includes a stator core formed of a plurality of teeth and an annular yoke connecting the teeth to each other, and windings wound on the teeth. A rotor of the motor confronts the stator while supported rotatably, and includes a rotor magnet, a rotor core, and a position sensing magnet. The motor further includes a position sensor for sensing a rotational position of the rotor and a circuit board for supplying an electric current to the windings in response to the rotational position of the rotor. The rotor magnet, the rotor core, and the position sensing magnet are integrated into one unit, which is mounted on a shaft of the rotor. | 2009-05-21 |
20090128076 | ROTARY ELECTRIC SYSTEM WITH NEUTRAL-POINT POWERING SYSTEM - In a rotary electric system, a controller works to turn high-side and low-side switching elements of first and second multiphase inverters on and off to thereby cause:
| 2009-05-21 |
20090128077 | THERMALLY ACTUATED OVERLOAD TRIPPING DEVICE - A circuit breaker with overload and short-circuit protection functions for a motor, on which is mounted a thermally actuated overload tripping device including an adjustment dial to set a value corresponding to a rated current value of the motor on a scale. The dial has a standard setting pointer mark and a correction setting pointer mark side-by-side along a perimeter. The standard setting pointer mark applies to using the circuit breaker as a single item. The correction setting pointer mark applies to using a number of circuit breakers arranged in a line in close contact with each other. By setting a mark selected according to the arrangement of the circuit breaker at the rated current value, the steady state current value of the tripping device can be adequately set to correspond to the rated current value of the motor. | 2009-05-21 |
20090128078 | MOTOR AND MOTOR SPEED CONTROLLING SYSTEM - A motor and a motor speed control system are disclosed. Two power signal lines and one feedback/speed-control signal line are coupled between a control device and the motor. The two power signal lines electrically connect the control device to the motor. The feedback/speed-control signal line bi-directionally transmits signals coming from the control device to the motor and from the motor to the control device. | 2009-05-21 |
20090128079 | Industrial Robot System - An industrial robot system including at least one industrial robot including at least one manipulator located in a robot cell, a control unit for controlling the manipulator, a portable operator control device for teaching and manually operating the manipulator, a detecting unit detecting when the portable operator control device leaves the robot cell, and a warning generator producing a warning to the operator upon detecting that the portable operator control device leaves the robot cell. | 2009-05-21 |
20090128080 | SYSTEM AND METHOD FOR CONTROLLING MULTIPLE SERVO MOTORS - The present invention discloses a method for controlling multiple servo motors, comprising: connecting a first plurality of servo motors in series; providing a corresponding switch in the series connection path for at least every servo motor other than the last one; sequentially setting an ID to each servo motor except the last one, and turning ON the corresponding switch; and setting an ID to the last servo motor. | 2009-05-21 |
20090128081 | ELECTRIC STEERING SYSTEM - An electric steering system is provided with: a steering torque detection unit which detects a steering torque acting on the shaft; a brushless motor which includes a rotor and a stator having multi-phase stator coils, and generates an assisting torque for assisting the steering torque; a current supply switching unit which drives the brushless motor; a rotary angle estimation unit which outputs an estimated rotary angle; a determination unit which determines whether or not the estimated rotary angle is appropriate by comparison with a direction of the steering torque; and a steering control unit which drives the brushless motor in accordance with the estimated rotary angle determined to be appropriate by the determination unit to control generation of the assisting torque. | 2009-05-21 |
20090128082 | Switching system for controlling the starting of an electrical motor - A low cost switching system for an electrical motor, which is speed sensitive, direction of rotation insensitive, load insensitive and voltage fluctuation insensitive. The switch contains a power supply, a control circuit, a zero cross detector circuit, a triggering circuit and an electronic switch to provide the switching action. A time delay hysterisis inducement circuit is provided in the switching system to energized and deenergized the capacitor at a predetermined synchronous speed of the motor. The switching system first checks the speed of the motor before reenergizing the start capacitor, which increases the life of the motor. The switching system operates in high temperature range and regardless the value of the capacitor used. | 2009-05-21 |
20090128083 | MOTOR DRIVE WITH VAR COMPENSATION - Apparatus and methods are disclosed for providing VAR compensation using an AC motor drive, in which an off-line motor drive is configured to prevent power transfer to a motor load output, with a line side converter being operated to control a voltage or current in an intermediate circuit for leading or lagging VAR compensation of an AC power system. | 2009-05-21 |
20090128084 | MOTOR HAVING CONTROLLABLE TORQUE - A controllable motor includes a rotor. A first stator winding set is operable, upon being energized, to generate and apply a first torque to the rotor. A second stator winding set independent of the first stator winding set is operable, upon being energized, to generate and apply a second torque to the rotor. A motor control is coupled to the first and second stator winding sets. The motor control is operable to selectively energize one of the first or second stator winding sets to thereby generate and apply one of the first or second torques to the rotor, and simultaneously energize both the first and second stator winding sets to thereby generate and apply a third torque greater than the first or the second torque. | 2009-05-21 |
20090128085 | Integrated Wind and Solar Power Generting Structure - An integrated wind and solar power generating structure has a box shape for facilitating moving, installing, disassembling so as to help promotion. The structure includes a foundation disposed on the ground for supporting the weight of the structure. The foundation has a flagpole for a set of connecting rods to be installed and to rotate on the flagpole. The set of connecting rods includes a plurality of connecting rods connected in series, wherein a wind turbine is installed on the topmost connecting rod for generating wind power. The structure also includes a shaft mechanism having a first end axially connected to a lower end of the set of connecting rods and a second end axially connected to the foundation respectively, and a labor-saving retractable device for driving the set of connecting rods to erect or lay down the wind turbine on the set of connecting rods with regard to an axis of the flagpole. Besides, the foundation has a battery, an electronic controlling device disposed therein to receive power from the wind turbine and a solar panel. The set of connecting rods has each connecting rod disposed with a rope ring and a rope, the rope extends and fixes to a fixed position on the ground when the set of connecting rods is erected or laid down. Besides, a supporting rod is additionally disposed and fixed on the ground, so that when the set of connecting rods is laid down, it was laid upon the supporting rod and tied up to the supporting rod and other immobile objects nearby. | 2009-05-21 |
20090128086 | SOLAR CHARGING APPARATUS AND METHOD FOR A MOBILE COMMUNICATION TERMINAL - A contactless charging apparatus, comprising: a battery having an induction coil; and a charging unit for supplying a current generated by condensing solar light to a built-in magnetic field generating coil for charging the battery by inductive coupling between the magnetic field generating coil and the induction coil. | 2009-05-21 |
20090128087 | Power supply apparatus using fuel cell - An power supply apparatus includes an adaptor provided with an identification mechanism to identify the type of a secondary cell, the adaptor detachably accommodating the secondary cell; and a charger main body provided with a fuel cell to generate electric power, a charging circuit to charge by supplying electric power to a secondary cell, at a charging voltage and a charging current suitable for the secondary cell identified by the mechanism, a monitoring circuit to monitor usage of a portable device, and an output switching circuit that performs switching, depending on a result of monitoring performed by the circuit, between electric power generated by the fuel cell and outputted by the secondary cell, and outputs one of them to the portable device. The charger main body detachably accommodates the adaptor and the fuel containing tank. | 2009-05-21 |
20090128088 | Fuel Cartridge Interconnect for Portable Fuel Cells - A hybrid power supply includes a fuel cell and an interface between the fuel cell and a fuel cartridge or external battery and a switching type DC/DC boost type converter that receives energy from the fuel cell or external battery and is arranged to deliver the energy to a rechargeable cell. The hybrid power supply also includes a fuel cell current sensor/comparator, included in a feedback control loop disposed about the DC/DC converter, which controls in part operation of the converter to provide constant current discharge on the fuel battery side of the hybrid power supply. An adapter that couples a source of AC power such as a charger to the interconnect is also disclosed. | 2009-05-21 |
20090128089 | LIGHT DETECTION POWER SYSTEM AND METHOD FOR SAME - The invention concerns a light detection power system ( | 2009-05-21 |
20090128090 | Portable charger for consumer electronic devices - Disclosed herein is a portable charger for mobile phones and other consumer electronic devices like iPOD, MP3 players, etc. The portable charger is a plug-and-charge device, it includes both male and female connectors, built-in rechargeable Li-Polymer or Li-Ion battery, LED and ON/OFF button. USB-flash-drive like design with cap covering male connector, lightweight enough to be attached to a key chain, when is needed, it can be plugged into Cell phone or other portable devices to charge devices right away. In various embodiments, different functionalities are added: utility light, MP3 player, FM radio transmitter, FM radio receiver, Bluetooth audio adapter, voice recorder, USB flash drive. | 2009-05-21 |
20090128091 | BATTERY CHARGER FOR PORTABLE DEVICES AND RELATED METHODS - A battery charger may include a charger connector to be coupled to a corresponding device connector of a portable device including a rechargeable battery. The battery charger may also include a charging circuit connected to the charger connector, and a controller connected to the charger connector and the charging circuit. The controller may be for causing a portable device connected to the charger connector to identify its corresponding portable device type and its corresponding rechargeable battery type from among a plurality of different portable device types and different battery types, and for causing the charging circuit to charge the rechargeable battery based thereon. | 2009-05-21 |
20090128092 | BASE CASE BATTERY WITH STORAGE - An aspect of the invention provides a base case battery for a portable personal computer. The base case battery includes a base case, a charging portion, a storage device, and holding portions. The charging portion is disposed in the base case, and configured to be electrically connected to the power input of the portable personal computer through a first connector. The storage device is disposed in the base case, and configured to be electrically connected to the portable personal computer through a second connector. The holding portions are disposed on the base case, and each of the holding portions is configured to mechanically connect the base case to the portable personal computer detachably. The charging portion is configured to extend the usage time of the portable personal computer, and the storage device is configured to extend the storage capacity of the memory of the portable personal computer. | 2009-05-21 |
20090128093 | Accumulator And Combination Of Accumulator With Device - The invention discloses an accumulator/device combination and an accumulator. In the case of the combination, the unit is connected to the accumulator via at least one current supply line. A device operating switch is arranged in the device. A monitoring unit is arranged in the accumulator. The monitoring unit comprises electronic circuit for detecting an alarm condition in the accumulator. The electronic circuit are interactively connected with the operating switch. | 2009-05-21 |
20090128094 | Alarm-including protection apparatus for lithium-ion battery and method thereof - An alarm-including protection apparatus and method thereof are used to protect a lithium-ion battery with a plurality of series cells. The protection apparatus includes a voltage balance controller for detecting the terminal voltage of each cell and correcting the terminal voltage of each cell. A protection unit and the lithium-ion battery are connected in series. A microprocessor connects to the voltage balance controller and the protection unit for receiving the terminal voltage of each cell and figuring out a voltage difference between the maximum terminal voltage and the minimum terminal voltage of the series cells. According to the comparison result of the voltage difference and a plurality of critical voltage differences, the microprocessor is used to correct the terminal voltage of each cell, generate an alarm signal or stop charging to the lithium-ion battery. | 2009-05-21 |
20090128095 | CIRCUIT FOR MEASURING AND CONTROLLING DIFFERENTIAL VOLTAGES - The invention relates to circuits for managing differential voltages in series. To individually control the differential voltages of voltage sources in series, there is provided an integrated control circuit for a set of N sources in series. This circuit comprises N discharge control and measurement cells which are each produced in a separate well, insulated from the substrate and from the other wells. The cells are linked to the circuits formed in the substrate by level translation circuits having a part inside the well and a part outside the well. These circuits use transistors withstanding voltages of several tens of volts. The integrated circuits may be cascaded on an SPI bus if one wishes to control a group of k.N sources with k>1. | 2009-05-21 |
20090128096 | ELECTRONIC APPARATUS WITH REMAINING BATTERY POWER INDICATING FUNCTION - An electronic apparatus has a multiplicity of display units including an electronic viewfinder and a liquid crystal display (LCD) panel. The apparatus has various display modes. The remaining battery power, i.e., estimated amounts of remaining battery times relative to a current remaining battery capacity, are calculated for the respective display modes. The calculated remaining battery power is collectively displayed as the remaining battery power information on the respective display units. The remaining battery power can be obtained for all the display modes even when the battery is being charged, so that a user can always grasp the remaining battery power of any of the display modes. | 2009-05-21 |
20090128097 | METHOD AND SYSTEM FOR TRACKING BATTERY STATE-OF-HEALTH - Methods, systems, and apparatuses for determining battery state of health are provided. A battery that is substantially uncharged is charged with a substantially constant charge current. A time duration of the charging of the battery with the substantially constant charge current is determined. A state of health of the battery is estimated based upon the determined time duration and the constant charge current. The state of health of the battery may be calculated by multiplying the determined time duration with a value of the constant charge current to determine a total accumulated charge, and applying a predetermined factor to the accumulated charge to determine the state of health. The predetermined factor is a fixed percentage of the total charge capacity of the battery that corresponds to the battery type. | 2009-05-21 |
20090128098 | PULSE GENERATING CIRCUIT, CONTROL METHOD FOR PULSE GENERATING CIRCUIT, TRANSMITTER, AND ELECTRONIC DEVICE - A pulse generating circuit includes: a boosting circuit which boosts power source voltage supplied from an external primary battery and produces boosted voltage higher than the power source voltage; a secondary battery to be charged with the boosted voltage; a pulse circuit which generates a pulse; a switch element connected between the secondary battery and the pulse circuit; and a control circuit which enables the boosting circuit and switches off the switch element during a charge period for charging the secondary battery with the boosted voltage, and disenables the boosting circuit and switches on the switch element during a discharge period for discharging the boosted voltage contained in the secondary battery. | 2009-05-21 |
20090128099 | Method and arrangement for controlling an electrical device - The invention relates to a method and arrangement for detecting a situation in which an electrical device is connected to another electrical device. The electrical device comprises a first, second, and third electrical contact terminal ( | 2009-05-21 |
20090128100 | Power system control apparatus and power system control method - A SVC control section detects a bus voltage from an instrument transformer, and adjusts reactive power generated by a SVC according to the detected bus voltage. A cooperative control section generates a control command for controlling the interconnection and parallel-off of a phase lead capacitor and a phase lag reactor on the basis of the amount of reactive power generated by the SVC and the bus voltage detected by the instrument transformer and a voltage sensor. A voltage comparator compares the bus voltage with a predetermined threshold voltage set to a voltage lower than a lower limit value of a steady state fluctuation range of the bus voltage and outputs the comparison result to a circuit breaker control section. When the bus voltage is lower than the threshold voltage, the circuit breaker control section locks the control command from the cooperative control section. | 2009-05-21 |
20090128101 | POWER CONVERSION CIRCUIT - A power conversion circuit comprising an input; an output; an electrical energy storage element having one side connected to the input; and at least two sub-circuits, wherein each respective sub-circuit is connected in series between the output and the other side of said electrical energy storage element; and wherein each said sub-circuit includes an inductive device, a rectifying element, and a controllable switching element connected in circuit therebetween to be capable of connecting the inductive device in parallel across the input; wherein the inductive elements of said at least two sub-circuits are magnetically coupled together. Smaller circuit components can therefore be used. | 2009-05-21 |
20090128102 | BALANCING DEVICE - A compensator for balancing an ac voltage network with a load connected between two phases. The compensator includes a voltage-source converter and a balancing device. The balancing device includes an inductance connected between phases before the load. | 2009-05-21 |
20090128103 | AC HIGH VOLTAGE POWER SUPPLY DEVICE, CHARGING DEVICE, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - An AC high voltage power supply device includes a comparison circuit configured to compare a first signal of a sinusoidal waveform and a second signal of a triangular waveform; a switching amplifier circuit configured to perform a switching operation based on a comparison result signal output from the comparison circuit to perform signal amplification; a conversion circuit configured to convert a waveform of a switch signal output from the switching amplifier circuit into a sinusoidal waveform; a transformer configured to boost a voltage of a converted signal output from the conversion circuit; and a control circuit configured to perform feedback control on the first signal input to the comparison circuit based on a monitoring signal including an input signal or an output signal of the transformer, so that a peak level of the output signal of the transformer becomes a desired peak level. | 2009-05-21 |
20090128104 | FULLY INTEGRATED ON-CHIP LOW DROPOUT VOLTAGE REGULATOR - A low dropout voltage regulator (LDO) includes a bias voltage generator, a differential error amplifier, an output driver, a controlled active load, a Double Ended Cascode Miller compensation block. The bias voltage generator produces a plurality of bias voltages. The differential error amplifier produces a differential output voltage based on the difference between a reference voltage and a function of the output voltage. The input terminal of the output driver is coupled to one output of the differential error amplifier. The substrate terminal of the output driver is capacitively coupled to the output node and resistively coupled to the input supply node. The controlled active load is coupled to the output of the output driver, and its control terminal is coupled to a function of the second output of the differential error amplifier. The inputs of the Double Ended Cascode Miller compensation block are capacitively coupled to the output node and its output is coupled to the input terminal of the output driver. | 2009-05-21 |
20090128105 | Power converter having airplane power source frequency detector - A power converter having an aircraft power source detector configured to limit the amount of power that can be drawn by the power converter when utilized in an aircraft. The power converter may detect an artifact of the aircraft power source, such as the 400 Hz ripple noise on an aircraft power line, or existing in the aircraft cabin, such EMI or aircraft lighting. | 2009-05-21 |
20090128106 | Power supply controller and semiconductor device - A voltage-dividing circuit | 2009-05-21 |
20090128107 | Low Dropout Voltage Regulator - Improved designs of an LDO voltage regulator with ultra low quiescent current are disclosed. According to one embodiment, an LDO voltage regulator is designed to completely cancel an intermediate gain stage while decreasing a quiescent current and to stabilize a loop circuit by means of two zeros introduced in a frequency transfer function thereof. Such a LDO voltage regulator does not increase the power consumption and applicable in many circuits used in electronic devices. | 2009-05-21 |
20090128108 | CONSTANT VOLTAGE POWER SUPPLY CIRCUIT - A first output transistor forms a first current path between an input and an output terminal and has a first control terminal applied with a first control signal. A second output transistor forms a second current path between the output and a ground terminal and has a second control terminal applied with a second control signal. A first comparator outputs the first control signal to decrease an ON-resistance of the first transistor when an output voltage from the output terminal is a predetermined value or less. A second comparator outputs the second control signal to render the second transistor conductive to decrease the output voltage when the output voltage is a predetermined value or more. An acceleration circuit accelerates charging of the first control terminal of the first transistor to a predetermined potential. The inhibition circuit inhibits the acceleration circuit operation according to a change of the second control signal. | 2009-05-21 |
20090128109 | DC/DC Converter with Dynamic Offset Compensation - The present invention provides a DC/DC up-converter ( | 2009-05-21 |
20090128110 | Compact Frequency Compensation Circuit And Method For A Switching Regulator Using External Zero - A compensation circuit in a monolithic switching regulator controller being incorporated in a closed loop feedback system of a switching regulator includes error amplifier having an output terminal with an output impedance and a degeneration resistance terminal coupled to a first terminal of the switching regulator controller. The compensation circuit includes a first resistor and a first capacitor connected in series between the output terminal of the error amplifier and a ground potential. In operation, the first capacitor and the output impedance of the error amplifier operate to introduce a pole and the first resistor and the first capacitor operate to introduce a first zero in the closed loop feedback system. When a second capacitor is coupled to the first terminal of the switching regulator controller, a second zero is introduced in the closed loop feedback system. The second capacitor is an off-chip capacitor formed external to the monolithic switching regulator controller. | 2009-05-21 |
20090128111 | REVERSE CURRENT PROTECTION APPARATUS FOR A SYNCHRONOUS SWITCHING VOLTAGE CONVERTER - A synchronous switching voltage converter that avoids a reverse current is provided. The synchronous switching voltage converter comprises a first switch, a second switch, an inductor, a current sensing unit, and a current comparing unit. A first current flows through the inductor. The current sensing unit provides a second current which is proportional to the first current. The current comparing unit judges whether the first current is equal to zero at time x by comparing A*I | 2009-05-21 |
20090128112 | DUTY-CYCLE INDEPENDENT CURRENT LIMIT FOR A POWER REGULATOR - One embodiment of the invention includes a power regulator system. The system comprises an error amplifier that provides an error voltage based on a comparison of a reference voltage and a feedback voltage associated with an output voltage of the power regulator system. The system also comprises a pulse-width modulation (PWM) comparator configured to generate a switching signal that controls activation and deactivation of at least one power switch. The PWM comparator defining a duty-cycle of the switching signal based on the error voltage. The system further comprises a current limit circuit configured to clamp the error voltage upon the error voltage exceeding a voltage limit having a magnitude that varies as a function of the duty-cycle to provide a predetermined current limit that is substantially fixed independent of the duty-cycle. | 2009-05-21 |
20090128113 | POWER CONVERTER HAVING AUTO CONVERSION FUNCTION FOR PULSE SKIP MODE AND CONTROL METHOD - A power converter having an auto conversion function for a pulse skip mode (PSM) and a related control method are provided. The power converter having an auto conversion function for a PSM and a control method thereof can provide a PSM capable of preventing unnecessary switching operations and, thus, improving the efficiency of the power converter by automatically switching to the PSM even when a load is small. | 2009-05-21 |
20090128114 | POWER SUPPLY OUTPUT VOLTAGE TRIMMING - A power supply trim control signal is produced by integrating differences between monitored and target values of the output voltage of a power supply. Register storage requirements are reduced by producing the target value from a nominal voltage value and one of a plurality of margin offsets selected in accordance with control data. The control data also selects between open and closed loop trim control. Stability is enhanced by changing the target value slowly in response to any change in the control data. | 2009-05-21 |
20090128115 | VOLTAGE REGULATOR AND CONTROLLING METHOD THEREOF - A controlling method of a voltage regulator is provided. The voltage regulator at least includes a differential circuit and a pump high-voltage circuit which has a bias path, an output transistor and an output terminal. The controlling method includes steps of: providing at least a pre-charge path to the pump high-voltage circuit, closing the bias path and charging the output terminal with the pre-charge path when the output terminal is transient, detecting an output level of the output terminal, and closing the pre-charge path and open the bias path to bias the output transistor when the output level reaches a predetermined value. | 2009-05-21 |
20090128116 | SWITCHING REGULATOR - A switching regulator includes a switching element that switches between on and off according to a control signal, an inductor that is charged with the input voltage by switching of the switching element, a rectification element that discharges the inductor when the switching element is off and charging the inductor is stopped, a differential amplifier that amplifies a difference between a voltage proportional to the output voltage and a predetermined reference voltage, a voltage change detection circuit that detects changes in the output voltage, and a control circuit that causes the switching element to switch between on and off in a predetermined cycle depending on a voltage output from the differential amplifier. The control circuit turns on the switching element regardless of the predetermined cycle when the voltage change detection circuit detects that a decrease in the output voltage exceeds a predetermined first reference value. | 2009-05-21 |
20090128117 | Voltage Conversion Device - A voltage transformer, which is placed between a DC power source (B) and a motor (M | 2009-05-21 |
20090128118 | POWER SUPPLY VOLTAGE CONTROL APPARATUS - A power supply voltage control apparatus capable of freely setting a clock period setting margin according to a system clock frequency, and capable of converging power supply voltage to minimum power supply voltage where normal operation is possible in a short period of time without errors in operation of internal circuits in response to changes in the system clock frequency is provided. Power supply voltage control apparatus is provided with a first frequency-divider that frequency-divides the system clock at a first frequency-diving ratio, a second frequency-divider that frequency-divides an output of a voltage control oscillator at a second frequency-dividing ratio, a phase comparator/frequency comparator that carries out a phase comparison/frequency comparison on the respective output signals of the first and second frequency-dividers, and a controller. Frequency-dividing ratios of the first and second frequency-divider are set by a second controller according to an operation mode signal corresponding to the system clock frequency. | 2009-05-21 |
20090128119 | DIFFERENTIAL OUTPUT CIRCUIT - A differential output circuit comprising: a first power supply line; a constant current source that includes a current input terminal coupled to the first power supply line; an output common mode voltage setting unit that includes a variable resistor element, one end of the variable resistor element being coupled to a current output terminal of the constant current source; and a signal transmission unit that includes a first power supply terminal and a second power supply terminal, the first power supply terminal being coupled to the other end of the variable resistor element, and the second power supply terminal being coupled to a second power supply line which supplies a voltage lower than a voltage of the first power supply line. | 2009-05-21 |
20090128120 | REFERENCE VOLTAGE GENERATION CIRCUIT, AD CONVERTER, DA CONVERTER, AND IMAGE PROCESSOR - A reference voltage generation circuit includes a plurality of resistors that divide a prescribed input reference voltage into a plurality of divisional voltages and a plurality of analogue switches one of which selects one of the divisional voltages to output the selected divisional voltage as a desired reference voltage. Each of the analogue switches is formed of a transistor, and a size of the transistor is varied corresponding to a level of the reference voltage to be output. | 2009-05-21 |
20090128121 | Bi-directional power supply with isolated output - The present invention pertains to a capacitor isolated electronic power converter having a direct current power source in series with a first inductor; and a first switch for switching contact with a second inductor in series with the power source return; an output load in series with a third inductor which connects to a second switch for switching contact to a fourth inductor in series with the output load return; said third inductor and second switch for switching connect through a first capacitive coupling to the second inductor; and said fourth inductor and second switch for switching connect through a second capacitive coupling to the first inductor; wherein the first and second capacitive coupling isolate the power source from the output load. | 2009-05-21 |
20090128122 | Apparatus for measuring the electrical energy delivered to a rail traction unit by a high voltage line - Apparatus for measuring the electrical energy supplied to a rail traction unit by a high voltage line ( | 2009-05-21 |
20090128123 | VECTOR/SIGNAL ANALYZER EQUALIZATION APPARATUS AND METHOD - Disclosed is a method of equalization of a vector/signal analyzer including: providing a structured test signal within a selected frequency range, the structured test signal comprising a plurality of frequency components each having a respective amplitude and phase; inputting the test signal to the analyzer; the analyzer operating to condition the test signal; determining information representative of frequency distortion of the conditioned test signal introduced by the analyzer; generating a set of equalization coefficients based on the information representative of the frequency distortion, the set of coefficients corresponding to the selected frequency range; and storing the set of equalization coefficients and the correspondence of the set of coefficients to the selected frequency range. | 2009-05-21 |
20090128124 | INFORMATION DISPLAY FOR DIGITAL MULTIMETER - A digital multimeter provides information regarding measurements shown on a display of the multimeter, and available functions of the multimeter. The information typically relates to a current context of the multimeter. The context may include a current mode or other setting of the multimeter. | 2009-05-21 |
20090128125 | MINI-MEASUREMENT DISPLAY FOR DIGITAL MULTIMETER - A digital multimeter displays a miniature version of a live actual reading of the multimeter. The miniature version typically appears after a larger version of the live actual reading is displaced by other display elements. The miniature version of the live actual reading may be accompanied by a warning icon or other graphical symbol to alert a user of a potentially hazardous electrical condition. | 2009-05-21 |
20090128126 | ROTARY SWITCH MEMORY FOR DIGITAL MULTIMETER - A digital multimeter comprises a rotary switch and a rotary switch memory. The rotary switch can be moved between a plurality of positions to change the function performed by the digital multimeter. When the rotary switch is in a particular position, a user can change the function currently associated with that position from a default function to a non-default function. Thereafter, when the user moves the rotary switch away from the particular and then subsequently moves the position back to the particular position, the multimeter resumes the non-default function without requiring further user-input. | 2009-05-21 |
20090128127 | AUTO-NUMBERING OF MEASUREMENTS IN DIGITAL MULTIMETER - A digital multimeter stores multiple sequential measurements of physical or electrical parameters. Each of the sequential measurements has a name including an automatically generated descriptor. The descriptor for each sequential measurement may indicate a relative position of the measurement within the sequence. For instance, the descriptor may indicate whether the measurement was obtained before or after other measurements in the sequence. | 2009-05-21 |
20090128128 | AUTOMATIC CAPTURE AND STORAGE OF MEASUREMENTS IN DIGITAL MULTIMETER - A digital multimeter includes an auto-save component configured to automatically capture and save a sequence of measurements. The auto-save component detects when a measurement becomes stable and upon determining that the measurement has become stable, captures and saves the measurement in a memory of the digital multimeter. The multimeter may additionally include an auto-naming component for automatically assigning a name to each measurement in the sequence, and an auto-hold component for temporarily freezing the display of the stable measurements in the multimeter. | 2009-05-21 |
20090128129 | Current sensor having magnetic gap - In a current sensor having a magnetic gap, a main body is divided into a first case segment having a terminal and a second case segment. An opening is formed in the main body. A magnetic sensor element is mounted on an element mounting portion arranged on a surface of the first case segment, the surface attaching to the second case segment. The sensor element is electrically coupled with the terminal. A core holding portion is formed in the main body that surrounds the opening and the element mounting portion. A core having the magnetic gap is inserted in the core holding portion. The sensor element is arranged in the magnetic gap of the core on the element mounting portion. The sensor element can thereby be disposed accurately in the magnetic gap of the core, and detection accuracy of the current sensor can be increased. | 2009-05-21 |
20090128130 | Integrated Sensor - An electronic circuit includes a substrate having a surface and a device supported by the surface of the substrate. The electronic circuit also includes a magnetic field transducer disposed over the surface of the substrate and an insulating layer disposed between the substrate and the magnetic field transducer. The electronic circuit also includes a conductor disposed over the magnetic field transducer. The conductor is configured to carry an electrical current to generate a first magnetic field. The electronic circuit is responsive to the first magnetic field. | 2009-05-21 |
20090128131 | Detector - A detector wherein a measuring range can be easily switched without increasing mounting area and manufacturing cost. The detector is provided with an EEPROM ( | 2009-05-21 |
20090128132 | Current measurement - A method is provided that comprises determining an amount of a first current from an amount of a charge stored in a first capacitor. Also, an apparatus is provided that comprises a reference timer circuit configured to generate a first signal indicating an expiration of a time period, and a sense circuit comprising a first capacitor and configured to sense, responsive to the first signal, a charge stored in the first capacitor, and to generate a second signal representing the sensed charge. | 2009-05-21 |
20090128133 | Duty Cycle Measurement Method and Apparatus for Various Signals Throughout an Integrated Circuit Device - A method and apparatus for measuring the absolute duty cycle of a signal anywhere on an integrated circuit device are provided. The mechanism employs a circuit having a plurality of substantially identical pulse shaper elements, each of which expand the pulse of an input signal whose duty cycle is to be measured by a same amount. The outputs of the pulse shaper elements may be coupled to substantially identical divider circuits whose outputs are coupled to a multiplexer that selects two inputs for output to a set of master/slave configured flip-flops, one input serving as a clock and the other as data to the flip-flops. The flip-flops sample the divider outputs selected by the multiplexer to detect if the dividers have failed or not. The outputs of the flip-flops are provided to an XOR gate which outputs a duty cycle signal indicative of the duty cycle of the input signal. | 2009-05-21 |
20090128134 | SEMICONDUCTOR INTEGRATED CIRCUIT APPARATUS, MEASUREMENT RESULT MANAGEMENT SYSTEM, AND MANAGEMENT SERVER - A semiconductor integrated circuit apparatus, and more particularly a technology for measuring and managing a physical amount of factors that exert an influence upon an operation of a semiconductor integrated circuit is provided; more particularly, a semiconductor integrated circuit that is an object of measurement, and a measurement circuit which measures a physical factor that exerts an influence upon the actual operation of the semiconductor integrated circuit, such as jitter or noise jitter, and noise of this semiconductor integrated circuit are provided on an identical chip; also, a measurement result of the measurement circuit of the present invention is analyzed, and is fed back to a circuit for adjusting the semiconductor integrated circuit that is the object of measurement. | 2009-05-21 |
20090128135 | MAGNET SCANNER - A magnet scanning device uses a helical scanning technique to scan a cylindrical magnet along a helical path on a cylindrical surface that corresponds to the cylindrical magnet. Based on the magnetic field profile, the device may detect any unacceptable irregularities in the magnetic field and identify a location of the cylindrical magnet associated with the irregularity. | 2009-05-21 |
20090128136 | Device and process for non-contacting determination of a state variable, in particular the position, of at least one pipeline pig - A device and a process are described for non-contacting determination of a state variable, in particular the position, of at least one pipeline pig which is displaceable in a supply path. The pipeline pig includes a magnetic-field source. The device exhibits at least one sensor responding to the presence of the magnetic-field source. Said device is, in addition, provided with a circuit arrangement, to which the sensor-output signal of the sensor can be supplied and which generates an electrical output signal that is representative of the state variable of the pipeline pig at the sensor. A plurality of preferably identical sensors connected in parallel are arranged in succession along the supply path in the direction of motion of the pipeline pig. | 2009-05-21 |
20090128137 | Method and arrangement for mounting a sensor designed for measuring the distance between stator and rotor - The invention relates to a sensor ( | 2009-05-21 |
20090128138 | METHOD FOR CORRECTING MAGNETIC BASED ORIENTATION MEASUREMENTS FOR LOCAL BIASING FIELDS - A method of determining an orientation of a data acquisition system deployed on a seafloor includes measuring horizontal magnetic fields using detectors on the data acquisition system while the data acquisition rotates and descends to the seafloor or rises from the seafloor. Resting horizontal magnetic fields are measured after the data acquisition system is on the seafloor. A heading of the data acquisition system on the seafloor may be determined based on maximum and minimum horizontal magnetic fields measured during the descent and the resting horizontal magnetic fields. | 2009-05-21 |
20090128139 | MAGNET POSITION LOCATOR - In one illustrative embodiment, the present subject matter is directed to a device adapted to determine the position of a target magnet, wherein the device includes a pair of orthogonal magnetic field sensors laterally disposed along an axis that is substantially transverse to an axis defined by one that is nominally parallel to the direction of the target magnet. In another illustrative embodiment, the subject matter is adapted for use on an automated guided vehicle (AGV), whereby detection of the target magnet's location facilitates correction of the vehicle's heading and position while traversing an AGV system. The present subject matter is also directed to a method whereby the position of a target magnet may be determined by triangulation, utilizing trigonometric calculations based upon the strength and direction of the magnet field to determine the magnet's position relative to the magnetic field sensors. | 2009-05-21 |
20090128140 | VEHICLE SWITCH - A holder is disposed in the case. The holder is mounted with an actuator that moves in the predetermined direction and a wiring board having a detector. A positioning mechanism between relevant components for detecting the positions of components is provided such as a wiring board and a holder, the position of magnet in particular. In this way, the magnet and the detector opposing to each other are positioned. As a result, when a vehicle switch is assembled, the variation in position of the magnet and detector is reduced. Accordingly, the vehicle switch is enhanced in switching accuracy and becomes capable of reliable operation. | 2009-05-21 |
20090128141 | Position Sensor for a Downhole Completion Device - The position of a movable downhole component such as a sleeve in a choke valve is monitored and determined using an array of sensors, preferably Hall Effect sensors that measure the strength of a magnetic field from a magnet that travels with the sleeve. The sensors measure the field strength and output a voltage related to the strength of the field that is detected. A plurality of sensors, with readings, transmits signals to a microprocessor to compute the magnet position directly. The sensors are in the tool body and are not mechanically coupled to the sleeve. The longitudinal position of the sleeve is directly computed using less than all available sensors to facilitate the speed of transmission of data and computation of actual position using known mathematical techniques. | 2009-05-21 |
20090128142 | Media defect removal in disk drive head testing - A method for testing a hard disk drive is described. The method includes determining a number of defects associated with a portion of recordable media associated with a hard disk drive. The method further includes comparing the number of determined defects to a threshold number of defects and provided the number of determined defects is greater than the threshold number of defects, determining that the portion of the disk comprises disk defects. | 2009-05-21 |
20090128143 | Systems and Methods for RF Magnetic-Field Vector Detection Based on Spin Rectification Effects - Systems and methods for RF magnetic-field vector detection based on spin rectification effects are described. In one embodiment, a method comprises sweeping a quasi-static external applied magnetic field at a h-vector detector, measuring voltages across terminals of the h-vector detector when the detector receives a microwave, varying the angle between the external applied static magnetic field and the RF current, determining an angular dependence of the measured voltages, and calculating a magnetic-field vector (h-vector) component of the microwave. In another embodiment, a method comprises providing an array of h-vector detectors, each element of the array being positioned at a different angle with respect to each other, subjecting the array to an external swept quasi-static magnetic field, measuring voltages across terminals of each element of the array when the array receives a microwave, associating each measured voltage with a respective angle, and calculating at least one h-vector component of the microwave. | 2009-05-21 |
20090128144 | High Pressure/High Temperature Magnetic Resonance Tool - The present invention pertains to an apparatus and method for conducting magnetic resonance measurements on fluids at high pressures and/or high temperatures. The apparatus can be used in conjunction with or as part of a downhole fluid sampling tool to perform NMR measurements on fluids withdrawn from petroleum reservoirs, or can also be used for laboratory measurements on live reservoir fluids. The apparatus can perform all of the measurements made by modern NMR logging tools, including multi-dimensional distribution functions of spin-spin (T | 2009-05-21 |
20090128145 | Apparatus and method for obtaining magnetic resonance imaging or spectroscopy data from live tissue samples - Disclosed herein is a system useful for obtaining magnetic resonance imaging data of longterm tissue slice cultures that typically survive well beyond 12 hours after tissue procurement. The system comprises a first support member comprising a perimeter defining a first interior space and a second support member. The first and second support members are configured such that they can secure a substrate having a live tissue sample disposed thereon when said first and second support members are brought together. Further, the system comprises a chamber into which the first and second support members, when brought together, may be disposed. Also disclosed herein is a method of producing magnetic resonance imaging data from a live tissue sample, said method comprising obtaining a tissue sample comprising live cells, culturing said tissue sample under conditions to keep cells of said tissue alive for at least 12 hours, and subjecting said tissue sample to magnetic resonance imaging. | 2009-05-21 |
20090128146 | DIRECTED-ENERGY IMAGING SYSTEM - An imaging system that uses a directed-energy device can include a directed-energy device configured to generate an excitation signal to impinge a region of interest of a target and excite elements therein and receive resonance signals emitted from the region of interest of the target after the excitation signal is terminated. The directed-energy device can include a charged particle generator configured to generate plural energized particles and a charge transformer configured to receive the plural energized particles that include charged particles from the charged particle generator and to output a wavefront including energized particles that include particles having substantially zero charge. The imaging system can also include plural gradient coils positioned about a bore of a magnet and configured to impress a polarizing magnetic field on a target and a communications interface. | 2009-05-21 |
20090128147 | NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY WITH MULTIPLE-COIL PROBES - An NMR inspection apparatus comprises a system for providing a dissolved, hyperpolarized sample and an NMR analysis system connected to the hyperpolarizing system are disclosed. The NMR analysis system includes a magnet for generating a substantially homogeneous magnetic field in a working volume suitable for carrying out NMR and a number of RF magnetic field generators located in the working volume. A non-electrically conducting conduit passes adjacent the RF magnetic field generators and is coupled to the hyperpolarizing system so as to convey a hyperpolarized sample past each RF magnetic field generator in sequence. A sample control system controls movement of a sample through the conduit. An NMR signal acquisition system controls the RF magnetic field generators to generate RF magnetic fields in accordance with a predetermined pulse sequence and detects the resulting NMR signals from the portions of the sample exposed to the RF magnetic fields. | 2009-05-21 |
20090128148 | NMR tomography method based on NBSEM with 2D spatial encoding by two mutually rotated multipole gradient fields - A nuclear magnetic resonance (NMR) imaging method | 2009-05-21 |
20090128149 | LOCAL COIL ARRANGEMENT WITH MAGNETIC FIELD SENSOR AND MAGNETIC RESONANCE SYSTEM WITH SUCH A LOCAL COIL ARRANGEMENT - A local coil arrangement for a magnetic resonance apparatus has a support structure with an antenna arrangement and a sensor arrangement embedded in the support structure. The antenna arrangement has a number of magnetic resonance antennas. A magnetic resonance excitation signal can respectively be emitted by means of each magnetic resonance antenna and/or a magnetic resonance signal can respectively be received by means of each magnetic resonance antenna. The sensor arrangement has a number of magnetic field sensors and an evaluation circuit. The magnetic field sensors detect how large a static magnetic field is to which the local coil arrangement is exposed and output a corresponding output signal and supply a corresponding output signal to the evaluation circuit. The evaluation circuit determines a logical presence signal and outputs it. The value of the logical presence signal depends on whether a field strength of the static magnetic field is greater than a minimum field strength. | 2009-05-21 |
20090128150 | SILENT AND THIN RF BODY COIL - An imaging subject ( | 2009-05-21 |
20090128151 | Closure and System for NMR Sample Containers - A selectively removable closure for closing the open end of an NMR sample tube having an open end and a closed end of the invention includes a cylindrical proximal first and a distal second portion, both portions substantially congruent to a central axis. The second portion has a hollow bore extending therethrough, the hollow bore has three sections: a distal section, a central section and a proximal section. The distal section has an inside diameter sized to accept the outside diameter of a preselected size NMR sample tube substantially without an interference, the central section is sized to provide a compliant interference fit with the outside diameter of the preselected size NMR sample tube, and the proximal section is sized to accept the outside diameter of the preselected size NMR sample tube without interference. As a user inserts the open end of the NMR sample tube axially into the closure, the distal section guides the tube into the closure, the central section provides a user perceptible resilient resistance to the passage of the tube and the movement of the tube open end into the proximal section allows the user to perceive a lessened resistance to the movement of the tube followed by seating the tube open end against the first portion of the closure. | 2009-05-21 |
20090128152 | SIMULTANEOUS MRI IMAGING OF MULTIPLE SUBJECTS - A magnetic resonance scanner includes a main magnet ( | 2009-05-21 |
20090128153 | METHOD AND CIRCUIT ARRANGEMENT FOR OPERATING MULTI-CHANNEL TRANSMIT/RECEIVE ANTENNA DEVICES - Methods and circuit arrangements for operating a multi-channel transmit/receive antenna device or arrangement, especially for use in a magnetic resonance imaging (MRI) system, are disclosed by which RF amplifiers can be used to their full peak power capability without running the risk that the RF amplifier is damaged due to excessive reflected power at its output. Furthermore by evaluating certain forward and reflected power signals patient safety is achieved with respect to monitoring the limits of the specific absorption rate. | 2009-05-21 |
20090128154 | ULTRA LOW OUTPUT IMPEDANCE RF POWER AMPLIFIER FOR PARALLEL EXCITATION - An ultra low output impedance RF power amplifier for driving a multiple transmit coil Magnetic Resonance Imaging (MRI) system is described, comprising an output matching network with high power MOSFET operatively coupled to at least one transmit coil in the MRI system for a desired output power and impedance. This invention also describes a method for achieving decoupling using the RF power amplifier to drive at least one transmit coil. | 2009-05-21 |
20090128155 | RF coil and MRI apparatus - An RF coil having at least three different resonance frequencies, wherein one of the resonance frequencies is adjusted to be a frequency f | 2009-05-21 |
20090128156 | ENHANCED PRECISE LOCATION - A method for determining the location of underground cables and pipes is disclosed. In some embodiments, the method includes measuring a set of electromagnetic field magnitudes and phases at a plurality of positions while traversing a target line parallelly using 3D electromagnetic coil sensors, the 3D electromagnetic coil sensors being orthogonally oriented to the target line, modeling a set of expected complex electromagnetic field magnitudes of a single underground conductor at each of the positions to form a set of values corresponding to a set of individual models for the target line, determining which of the set of individuals models is a best model, determining confidence information at each of the positions based on a comparison between the measured set of complex electromagnetic magnitudes and phases and the best model, and determining parameters at each of positions related to the target line from the best model. | 2009-05-21 |
20090128157 | Abnormality Determination Device of Power Supply and Abnormality Determination Method Thereof - A power supply having a battery ( | 2009-05-21 |