Abstract: A coil component includes: a substrate body having a first resin part formed by a resin that contains magnetic grains, and a second resin part joined to the surface of the first resin part and formed by a resin that contains filler, and whose resin content is higher than that of the first resin part; a coil embedded at least in a part of the first resin part and formed by a conductor having an insulating film; leader parts formed by the conductor and led out from the coil to the second resin part; and terminal parts connected electrically to the leader parts and provided in the second resin part. The above structures can enhance mechanical strength.

Abstract: A magnetic field communication method and apparatus using a giant magnetoimpedance (GMI) magnetometer are disclosed. The magnetic field communication apparatus includes a GMI magnetometer configured to detect a first communication signal based on a received magnetic field signal, a first signal extractor configured to extract a second communication signal comprising a message signal from the first communication signal, a second signal extractor configured to extract a third communication signal by removing a magnetization frequency signal from the second communication signal, and a third signal extractor configured to extract the message signal by removing a carrier wave frequency signal from the third communication signal.

Abstract: A radio frequency (RF) weak magnetic field detection sensor includes a ferromagnetic core, a pickup coil disposed to surround the ferromagnetic core, a substrate that includes an opening, a core pad connected to the ferromagnetic core and a coil pad connected to the pickup coil, and an insulating tube interposed between the ferromagnetic core and the pickup coil. The insulating tube includes a bobbin around which the pickup coil is wound, and a core hole formed to pass through the bobbin and configured to accommodate the ferromagnetic core.

Abstract: A current monitor for a transmission line having powered active components is provided. A current monitor includes: a housing configured to be coupled to a transmission line, an inductive current sensor in the housing configured to measure a value of the current on the transmission line to generate a sensor signal, a power source, and a sensor signal conversion circuit in the housing configured to receive power from the power source and to generate a current output signal based on the sensor signal, the current output signal having a natively useful form.

Abstract: The present invention relates to a magnetic sensor based on a Wheatstone bridge and a manufacturing method thereof. The magnetic sensor according to an embodiment includes a magnetic field sensing unit that is provided with a plurality of magneto resistors forming a resistance bridge, a magneto resistor monitoring unit that monitors resistance values of the plurality of magneto resistors, and an offset adjusting unit that adjusts a resistance value of a thin film variable resistor connected to at least one terminal among a plurality of current terminals provided in the resistance bridge based on the monitoring result of the resistance values.

Abstract: Fluxgate current transducer including a fluxgate device comprising a saturable soft magnetic core and an excitation coil, and a processing circuit comprising a control circuit and a voltage generator connected to the control circuit for generating an alternating current in the excitation coil, the voltage generator generating a voltage oscillating between a maximum positive voltage (+U) and a maximum negative voltage (?U) configured to alternatingly saturate the soft magnetic core. The signal processing circuit comprises an overload circuit portion connected to the control circuit, configured to generate overload currents through the excitation coil over time windows (Tn) after detection of the excitation coil current reaching positive and negative threshold currents (+S3, ?S3) representative of saturation of the magnetic core, during at least one of a plurality of alternating voltage periods (P).

Abstract: An electromagnetic property measuring device includes a magnetic conductive structure, a coil, and a scattering parameter measuring unit. The magnetic conductive structure includes a first side facing a sample to be tested and a second side opposite to the first side, and the first side has a magnetic gap. The coil surrounds the magnetic conductive structure to generate a magnetic field with the magnetic conductive structure. The scattering parameter measuring unit is disposed at the first side and located within a range of the magnetic field.

Abstract: Disclosed is a compact 3-axis coil design for a magnetic tracking system. In an embodiment, compactness is achieved by using a 3-axis coil in the transmitter that includes a scaffold design with a side surface having a curved groove for guiding one or more windings of a z-axis coil, such that the physical geometry is not increased.

Abstract: A magnetic element. In some embodiments, the magnetic element includes a first electrically conductive coil, having a first annular surface and a second annular surface; a second electrically conductive coil, having a first annular surface and a second annular surface; and a spacer between the first electrically conductive coil and the second electrically conductive coil; a fluid inlet; and a fluid outlet. The spacer may have a first face, the first face being separated from the first annular surface of the first electrically conductive coil by a first gap; and a fluid path may extend from the fluid inlet to the fluid outlet through the first gap.

Abstract: Improved magnetic component models, circuit simulation systems and methods are presented for simulating operation of a modeled magnetic circuit component in which user input defines magnetically susceptible core geometry of the modeled magnetic circuit component, a core model simulates operation of the magnetically susceptible core at least partially according to the geometry of the magnetically susceptible core, and one or more coil models simulate operation of coils wound around the magnetically susceptible core to provide a scalable model with geometry adjustable permeability for fluxgate magnetic sensors, transformers, inductors or other modeled components.

Abstract: A current sensing circuit is provided for measuring a current in an electrical line connecting an electrical supply to a load. The current sensing circuit includes a magnetic circuit having: a magnetic core, a reference winding wound around the magnetic core, and a conductor passing through center of the magnetic core. The conductor is being connected to the electrical line. The current sensing circuit further includes a detection circuit connected to the reference winding of the magnetic circuit. The detection circuit is configured to detect a change in condition of the magnetic core and generate a detection signal in response to determination of the change. Furthermore, the current sensing circuit includes a controller coupled to the detection circuit for receiving the detection signal. The controller measures the current in the electrical line in response to the detection signal from the detection circuit.

Abstract: A current sensor includes a plurality of individual sensors and a wiring case. Each of the individual sensors includes an electrical-conduction member through which a measurement current to be measured flows, a magnetoelectric converter and an insulating sensor housing. The magnetoelectric converter converts a measurement magnetic field caused by a flow of the measurement current into an electric signal. The sensor housing accommodates the electrical-conduction member and the magnetoelectric converter therein. The wiring case is larger than the sensor housing. The wiring case includes an insulating integrated housing in which the plurality of individual sensors is fixed, and an input/output wiring disposed in the integrated housing and electrically connected to the megnetoelectric converter of each of the plurality of individual sensors.

Abstract: Disclosed herein is a current sensor that includes a bus bar and a magnetic sensor. The bus bar includes first and second cylindrical structure parts which are coaxially arranged, and a sensing part disposed in a hollow area surrounded by the first and second cylindrical structure parts. The magnetic sensor is disposed in the hollow area. The bus bar is configured to branch current to be measured into the first cylindrical structure part and sensing part and to make at least part of a current component of the current to be measured that flows in the first cylindrical structure part in one direction flow in the second cylindrical structure part in an opposite direction to the one direction.

Abstract: A physical unclonable function is disclosed. A highly random distribution of magnetic particles within a thermoplastic polymer is created by magnetizing magnetizable particles in solid pellet feed material before feeding the solid pellets into an injection molding machine. Other devices and processes are disclosed.

Abstract: An optical receiver circuit includes a light receiving element to convert an optical signal into a current signal, a submount substrate on which the light receiving element is mounted, a wiring connected to an anode pad of the light receiving element and a wire connected to a preamplifier on the submount substrate, a wiring to which a bias voltage is applied on the submount substrate; a wiring connected to a cathode pad of the light receiving element on the submount substrate; and a resistor connected to the wiring to serve as a path when the bias voltage is applied to the light receiving element via the wiring on the submount substrate. A resistance value of the resistor is determined such that a resonance peak between the preamplifier and ground is suppressed and that oscillation in the preamplifier is suppressed.

Abstract: A battery management unit for a battery system with a conductor or a busbar, the battery management unit including a printed circuit board, and a fluxgate current sensor including a magnetic core having a through-hole, at least one excitation winding, at least one compensation winding, and a sensor circuit configured to measure a magnetization of the at least one excitation winding, to generate a driving signal for driving the at least one compensation winding, to generate a current flowing through the at least one compensation winding according to the driving signal, and to generate an output signal corresponding to a magnitude of an electric current flowing through the through-hole of the magnetic core, wherein the magnetic core, the at least one excitation winding, the at least one compensation winding, and the sensor circuit are each integrated into the printed circuit board.

Abstract: A magnetic field measurement system can include at least one magnetometer; and a ferrofluid shield disposed at least partially around the at least one magnetometer. For example, the ferrofluid shield can include a microfluid fabric and a ferrofluid disposed in or flowable into the microfluid fabric. As another example, the ferrofluid shield can include a ferrofluid and a controller configured to alter an arrangement of the ferrofluid within the ferrofluid shield.

Abstract: A coil component includes an insulating layer in which a magnetic core is embedded, coil electrodes wound around the magnetic core, external connection pad electrodes that are provided on the upper surface of the insulating layer and are connected to the coil electrodes. Each of the coil electrodes includes a plurality of inner metal pins standing in the insulating layer, a plurality of outer metal pins standing in the insulating layer, a plurality of upper wiring patterns formed on the upper surface of the insulating layer, and a plurality of lower wiring pattern formed on the undersurface of the insulating layer. Each of the pad electrodes is directly connected to the upper end surface of the inner metal pin or the outer metal pin, and has, in plan view, an area larger than that of the single upper wiring pattern or the single lower wiring pattern.

Abstract: Methods and apparatus for providing data transfer with a drive coil to transmit information, a receive coil magnetically coupled to the drive coil, and a first magnetoresistive sensor proximate the receive coil to detect information from the receive coil. In embodiments, the drive and receive coils are separated by an isolation material. In embodiments, a signal isolator IC packages includes transmit and receive coils and a magnetic field sensing element coupled to the receive coil.

Abstract: Various embodiments of a light detection device and a method of using such device are disclosed. In one or more embodiments, the light detection device can include a housing including a top surface and a bottom surface, where the housing extends along a housing axis between the top surface and the bottom surface; and a support member connected to the housing and adapted to be selectively moved from a closed position to an open position. The support member is further adapted to maintain the light detection device in an upright position when the bottom surface and the support member are in contact with a working surface and the support member is in the open position.

Abstract: A digital pen may include an orientation sensors and a three-dimensional (3D) coordinate plane selection module wherein, via input from the orientation sensors describing a position and orientation of the digital pen with respect to a two-dimensional (2D) display, the 3D coordinate plane selection module selects at least one coordinate plane in which an element of a 3D image is to be adjusted.

Abstract: A current monitor for a transmission line having powered active components is provided. A current monitor includes: a housing configured to be coupled to a transmission line, an inductive current sensor in the housing configured to measure a value of the current on the transmission line to generate a sensor signal, a power source, and a sensor signal conversion circuit in the housing configured to receive power from the power source and to generate a current output signal based on the sensor signal, the current output signal having a natively useful form.

Abstract: A magnetic field measurement system includes at least one magnetometer; and at least one flux concentrator made of a high magnetic permeability material and configured to receive magnetic field signals from a source, to concentrate the magnetic field signals or reorient the magnetic field signals in a preselected direction, and to direct the concentrated or reoriented magnetic field signals toward at least one of the at least one magnetometer. In addition to, or as an alternative to, the flux concentrator, the system can include a passive shield made of the high magnetic permeability material. The system may also include active shielding.

Abstract: A current sensor device includes a bus bar that is to be connected to a plate-shaped terminal of a semiconductor device, a magnetoelectric conversion element that is configured to detect a current flowing through the bus bar, and a resin portion that integrally holds the magnetoelectric conversion element and the bus bar. The bus bar has one end protruding from the resin portion, and the one end of the bus bar includes a penetration portion defined by wall surfaces. The wall surfaces includes a pair of opposing wall surfaces opposing to each other. At least one of the opposing wall surfaces is configured to be connected to the terminal.

Abstract: An isolated voltage probe includes: a conductor including a positive lead, a negative lead, and a resistance via which the positive lead and the negative lead are connected to each other; a magnetic sensor for measuring a magnetic field in a non-contact manner, the magnetic field being generated by a current flowing through the conductor; and a coaxial cable for transmitting a signal that is based on an output supplied from the magnetic sensor.

Abstract: Measuring arrangement for detecting a magnetic unidirectional flux in the core of a transformer, wherein a sensor, formed from a ferromagnetic sensor core which is surrounded by a sensor coil, is arranged in a section of a core limb in a cooking channel, where the section is predefined by the width of the winding, or is arranged in an annular space, formed from an outer peripheral surface of the core limb and an inner peripheral surface of an associated transformer winding, such that a magnetic partial flux is diverted by the core limb and guided over at least one non-ferromagnetic gap.

Abstract: A power supply apparatus for a magnetic resonance apparatus has a power supply terminal module with a power supply unit and a reference voltage pull-down unit, and a load terminal module with a voltage comparator connected to a load power-feed terminal, which compares a nominal voltage and an actual voltage of the load power-feed terminal. A counter begins counting when the actual voltage is lower than the nominal voltage, and keeps its count unchanged when the actual voltage is equal to the nominal voltage, and emits a signal corresponding to the count to a digital-to-analog converter, connected to a phase inverter, which converts the digital signal to a positive analog voltage. A phase inverter is connected to an output voltage reference terminal of the power supply unit, and inverts the phase of the analog voltage to produce a negative analog voltage that compensates voltage drop loss on a cable between the power supply and the load power-feed terminal.

Abstract: A transducer includes a planar coil coupled to a magnetic flux guide. The magnetic flux guide includes an array of nanowires. The transducer could include a plurality of magnetic flux guides and a plurality of planar coils stacked together. The flux guides and planar coils could alternative in the stacked configuration.

Abstract: The present invention provides a core member, a gapped core, and a current sensor in which the gap width of a core main body that is entirely or partially covered by a resin mold portion can be set as appropriate, and insulation between the core main body and a bus bar opening can be achieved. A core member 10 according to the present invention is a core member that includes a gap forming region C in which a gap 21 is formed.

Abstract: A fault current limiter (FCL) includes at least one magnetisable core member and at least one AC magnetomotive force source configured to generate a varying magnetic flux in at least a portion of the at least one magnetisable core member. At least one static magnetomotive force source is positioned to provide a magnetic circuit within at least part of the at least one magnetisable core member and the AC magnetomotive force source and the static magnetomotive force source are relatively positioned to be orthogonal to each other. Typically the static magnetomotive force source may be a permanent magnet and the AC magnetomotive force source configured to generate a varying magnetic flux in both of first and second spaced core members.

Abstract: An exemplary alignment module for a base station antenna has one or more accelerometers and one or more magnetometers. The one or more accelerometers are used to determine tilt and roll angles of the antenna, while the yaw angle of the antenna is determined using the one or more magnetometers and the determined tilt and roll angles. Using multiple accelerometers and/or multiple magnetometers can improve accuracy of angle determination. A service provider can determine when to re-align the antenna by monitoring the tilt, roll, and yaw angles remotely to detect changes in antenna orientation. Yaw angle determination can also take into account offset values corresponding to soft-iron effects, hard-iron effects, and factory calibration. The need to re-calibrate offset values following changes in local magnetic environment can be detected by comparing different sensor signals, such as the different magnetic fields detected by a plurality of magnetometers.

Abstract: A wound wire is wound around a core assembly so that both ends are short-circuited. In a coupling pin insertion state in which a coupling pin is inserted in a through hole of the core assembly, outer-peripheral space parts of respective divided core portions of the core assembly are disposed so as to overlap in plan view. Consequently, an air gap is formed in a part of a side surface of the core assembly. Before formation of a covering member, a main wire is caused to pass through the air gap and is thus disposed in a wiring hole of the core assembly. Then, the covering member for closing the air gap is provided on an outer peripheral surface side of the core assembly including the air gap so that a core structure is obtained.

Abstract: A fluxgate device that includes a first magnetic core and a second magnetic core. The first magnetic core has a first magnetized direction that deviates from a first sense direction by more than 0 degree and less than 90 degrees. The second magnetic core is arranged orthogonally to the first magnetic core. The second magnetic core has a second magnetized direction that deviates from a second sense direction by more than 0 degree and less than 90 degrees.

Abstract: A magnetic amplifier includes a permeable core having multiple legs. Control windings wound around separate legs are spaced apart and connected in series in an anti-symmetric relation. Harmonic filters are positioned adjacent to the control windings to attenuate even-ordered harmonics generated by alternating load current passing through a portion of the legs. The control windings bias magnetic flux arising from control current flowing through one of the control windings which is substantially equal to the biasing magnetic flux flowing into a second control winding. The flow of the control current through each of the control windings changes the reactance of the permeable core reactor by driving those portions of the permeable core that convey the biasing magnetic flux into saturation. The phasing of the control winding limits a voltage induced in the plurality of control windings caused by a magnetic flux passing around a portion of the permeable core.

Abstract: A measuring device for measuring magnetic properties in a vicinity of the measuring device, in connection with a sensor line having sensor elements, includes a magnetization device for generating a magnetic field substantially homogeneous in a region of the sensor line, the field direction of the magnetic field, in the region of the sensor line, being at an angle of greater than 0° and less than 90° to the direction of the sensor line.

Abstract: The invention relates to a flow cell for absorption detection, in which a tube through which flow is to pass is held at its opposite ends in a supporting flange in each case and is suspended in a substantially cantilevered manner, the two supporting flanges being connected rigidly to each other in order to avoid stresses accidentally introduced into the tube.

Abstract: A magnetic-field detecting device includes a pair of magneto-sensors including respective magnetism sensing portions that sense magnetism, and respective coils sensing changes of magnetic fluxes in the magnetism sensing portions, and an elongate connecting member cooperating with the magnetism sensing portions to constitute a magnetic circuit. A magnetism sensing direction of the magnetism sensing portions coincides with a longitudinal direction of the connecting member to an extent that permits the coils to equally sense a magnetic field applied to the coils the connecting member being formed of a magnetic material having a relative magnetic permeability of at least 100, a magnetic material having a relative magnetic permeability which is at least 1/100 of that of a magnetic material of the magnetism sensing portions, or the same magnetic material as the magnetism sensing portions the magnetic-field sensor measuring the magnetism on the basis of a difference between outputs of the coils.

Abstract: To provide a magnetic sensor circuit which does not output spike-like voltage errors to a signal processing circuit. A magnetic sensor circuit is provided which is configured so as to output an output signal to a signal processing circuit through a plurality of hall elements driven by a first switch circuit and a second switch circuit controlled by a second control circuit and in which the first switch circuit controls timings at which spikes occur in the output signal of each of the hall elements in such a manner that the timings are not the same, and the second switch circuit selects and outputs an output signal having a period of a timing free of the occurrence of a spike.

Abstract: Automated degaussing methods and apparatus are presented for degaussing a magnetic core in close loop fashion, in which a plurality of pulses are applied to a compensation coil magnetically coupled with the core with duration or energy being decreased in succeeding pulse cycles according to a discrete feedback algorithm, and with individual pulse polarities being set according to core magnetization polarity measured subsequent to an immediately preceding pulse.

Abstract: A method of locating a position of a linear object, including arranging a first and a second reactor around a measuring point, the first reactor generating an induced voltage corresponding to an X-direction component of a magnetic field, the X direction perpendicular to a running direction of the object, and the second reactor generating an induced voltage corresponding to a Y-direction component of the field, the Y direction perpendicular to the X-direction and the running direction; obtaining a first reactor induced voltage and a second reactor induced voltage; setting an X-distance as a first distance from the point to the object center, and setting the Y-distance as a second distance; and estimating a direction in which the linear object is located as viewed from the point, by regarding an X-distance to Y-distance ratio as equal to a ratio of the first voltage to the second voltage multiplied by a coefficient.

Abstract: An indoor sound-modulating device is provided. The indoor sound-modulating device includes a low-frequency noise detector, an automatic actuator and an audio signal generator. The low-frequency noise detector detects low-frequency noise and generates a first modulating signal in response to the detected low-frequency noise. The automatic actuator issues a second modulating signal in response to a predetermined state. The audio signal generator generates a low-frequency audio signal for eliminating the low-frequency noise in response to the first modulating signal and generates a high-frequency repellent audio signal in response to the second modulating signal. The low-frequency audio signal has a frequency ranging from 20 Hz to 350 Hz, while the high-frequency repellent audio signal has a frequency not less than 8000 Hz.

Abstract: A media program is displayed on a touch-sensitive screen of an electronic device. On the touch-sensitive screen, a scroll bar and an indicator are displayed. The indicator is configured to be moved along the scroll bar in a first direction or a second direction. A movement of the indicator in the first direction along the scroll bar causes the media program to be navigated forward in time, and a movement of the indicator in the second direction along the scroll bar causes the media program to be navigated backward in time. The indicator is moved along the scroll bar in one of the first and second directions in response to a user engagement of the touch-sensitive screen. The moving of the indicator comprises snapping the indicator to a predefined location on the scroll bar.

Abstract: Apparatuses for detecting the strength of magnetic fields may include a first magnetic field detection circuit that produces a first signal indicating a strength of a magnetic field, and a second magnetic field detection circuit that can be turned on and off, and produces a second signal indicating the strength of the magnetic field. A control circuit may be configured to determine whether the first signal indicates a change greater than a predetermined amount in the strength of the magnetic field. If the change is greater than the predetermined amount, the control circuit may turn on the second magnetic field detection circuit. The control circuit may turn off the second magnetic field detection circuit to conserve power if the strength of the magnetic field is relatively stable. Methods for detecting the strength of the magnetic field are also disclosed.

Abstract: A current sensor according to the present invention includes a sensor element and a detector. The sensor element includes a core member, an exciting coil and a detection coil. The sensor element is configured such that, while the exciting coil is fed with an excitation signal, comprising a fundamental component, and when the signal to be detected flows, a signal, including a harmonic component, corresponding to the permeability ? of the core member at that point, being superposed on the fundamental component, is outputted from the detection coil. The detector includes a component extraction unit, a level specification unit, and an information output unit.

Abstract: A printed circuit has a creep suppressor and a stack of metallization layers separated by electrically insulating layers. A metallization layer arranged above the insulating layer at least partially covers a cavity formed in the latter's top face. Prepreg arranged directly on the insulating layer below the metallization layer bonds the layers together. A magnetic core is housed in the cavity leaves at least a five micrometer gap between the cavity's vertical walls and roof and the core's facing vertical and top faces. During stack assembly, the creep suppressor prevents prepreg from flowing, by creep, into the cavity until it contacts more than 20% of the core's top face.

Abstract: A magnetic sensor comprises an orthogonal flux-gate magnetometer having a first sensor head comprising a first magnetic core at least parallel portions of which are formed of magnetic material, and a first detection coil wound around said first magnetic core, said parallel portions of said first magnetic core being placed closely to each other. The magnetic sensor comprises a search-coil magnetometer having a second sensor head comprising a second magnetic core having a central axis placed coaxially with a central axis of the first magnetic core of said orthogonal flux-gate magnetometer, and a second detection coil wound around said second magnetic core. The first sensor head of said orthogonal flux-gate magnetometer is placed in a region in which magnetic flux density is increased through a magnet collection effect by the second magnetic core of said search-coil magnetometer.

Abstract: Methods and systems are described that involve a head-mountable display (HMD) or an associated device determining the orientation of a person's head relative to their body. To do so, example methods and systems may compare sensor data from the HMD to corresponding sensor data from a tracking device that is expected to move in a manner that follows the wearer's body, such a mobile phone that is located in the HMD wearer's pocket.

Abstract: A semiconductor integrated circuit includes a clock-signal control circuit controlling intensity-signal output, which is output from a signal processing circuit, to be stopped in at least a forward outage time and a backward outage time. The forward outage time is previous to an apex point of a triangular wave and having 1 to 5% of a triangular wave period. The backward outage time is subsequent to the apex point of the triangular wave and having 1 to 5% of a triangular wave period.

Abstract: Disclosed herein is an electronic apparatus, including an electric power receiving portion receiving an electric power from a power feeding apparatus by using a magnetic field, and a detecting portion detecting presence or absence of a foreign object between said power feeding apparatus and said detecting portion.

Abstract: An integrated magnetic sensor formed by a semiconductor chip having a surface and accommodating a magnetic via and a sensing coil. The magnetic via is formed by a cylindrical layer of ferromagnetic material that extends perpendicular to the surface of the first chip and has in cross-section an annular shape of a circular or elliptical or curvilinear type. The sensing coil surrounds the magnetic via at a distance and is connected to an electronic circuit.