ALPS GREEN DEVICES CO., LTD. Patent applications |
Patent application number | Title | Published |
20150015241 | CURRENT SENSOR - A current sensor according to the present invention includes a bus bar, a magnetic sensor element disposed so as to face the bus bar, a wiring board on which the magnetic sensor element is provided, and a signal line electrically connected to the magnetic sensor element. The wiring board includes a base portion facing the bus bar and an extending portion extending from the base portion, and the signal line is connected to the extending portion and provided in a direction intersecting the wiring board. | 01-15-2015 |
20140247044 | CURRENT SENSOR - A current sensor includes a first magnetic sensor and a second magnetic sensor which are configured to detect an induced magnetic field from target current to be measured flowing through a current line. The first and second magnetic sensors each include a magnetoresistive element that includes a free magnetic layer and a hard bias layer applying a bias magnetic field to the free magnetic layer. The bias magnetic field in the magnetoresistive element of the first magnetic sensor is oriented opposite to the bias magnetic field in the magnetoresistive element of the second magnetic sensor. | 09-04-2014 |
20140132248 | CURRENT SENSOR - A current sensor includes a casing including a pair of arms and coupling part, multiple magneto-electric transducers arranged on the circumference of a virtual ellipse whose major axis or minor axis extends between the arms, a support disposed obliquely relative to the major axis or the minor axis of the virtual ellipse within an angle formed by the major axis and the minor axis so as to be close to one of the arms when viewed from the center of a wire disposed and fastened between the arms, and a band wound around a circumferential surface of the wire fastened between the arms, part of the band being caught by the support, the wire being fastened by the band such that the central axis or center of the wire is held close to the support. | 05-15-2014 |
20140103918 | CURRENT SENSOR - A current sensor includes a first current path, a second current path disposed parallel to the first current path, and a pair of first magnetic sensors. The first current path has a pair of main surfaces and includes a plate-shaped first region. The second current path has a pair of main surfaces and includes a plate-shaped second region. The first magnetic sensors are arranged on the respective main surfaces in the first region such that sensing axes of the first magnetic sensors are parallel to the respective main surfaces in the first region. The first magnetic sensors are configured to sense a magnetic field generated by a target current flowing through the first region. The second region is placed such that the main surfaces in the second region are perpendicular to the sensing axes of the first magnetic sensors. | 04-17-2014 |
20140103908 | CURRENT SENSOR - A current sensor of the present invention includes a mounting unit including a disposition region in which a current path is disposed, a pair of magnetic detection elements disposed in the mounting unit so as to sandwich therebetween the disposition region, and an arithmetic circuit performing an arithmetic operation on the current value of the current path on the basis of the detection values of the pair of magnetic detection elements. The pair of magnetic detection elements is disposed on sides opposite to each other with respect to a virtual line passing through the gravity center of the current path in cross-sectional view of the current path, and individually has sensitivity axes parallel to a direction perpendicular to the direction of a current conducted through the current path and the direction of the virtual line. | 04-17-2014 |
20140102595 | Fe-BASED AMORPHOUS ALLOY AND DUST CORE MADE USING Fe-BASED AMORPHOUS ALLOY POWDER - An Fe-based amorphous alloy of the present invention has a composition represented by formula (Fe | 04-17-2014 |
20140097922 | Fe-BASED AMORPHOUS ALLOY, POWDER CORE USING THE SAME, AND COIL ENCAPSULATED POWDER CORE - An Fe-based amorphous alloy of the present invention has a composition formula represented by Fe | 04-10-2014 |
20140097826 | CURRENT SENSOR - A current sensor includes first and second current paths each including a first conductive portion and second and third conductive portions extending in the X direction from both ends of the first conductive portion, and being neighboring and apart in the Y direction; and first and second magnetoelectric conversion elements arranged with the first conductive portion of the first current path interposed therebetween, and having sensitive axes along the Y direction. The second and third conductive portions of each of the first and second current paths are apart in the Z direction. The second conductive portion of the second current path is arranged in the Y direction with respect to the first and second magnetoelectric conversion elements. Perpendicular lines from the center line of the second conductive portion of the second current path to the first and second magnetoelectric conversion elements have the same direction and equivalent lengths. | 04-10-2014 |
20140070801 | CURRENT SENSOR - A current sensor includes a first conductor and a second conductor arranged so as to form current paths parallel to each other; a circuit board arranged such that a surface thereof is perpendicular to the current paths; and a first magnetoelectric transducer and a second magnetoelectric transducer arranged on the surface of the circuit board such that the first conductor is interposed therebetween. The first conductor, the second conductor, the first magnetoelectric transducer, and the second magnetoelectric transducer are located on a same plane. | 03-13-2014 |
20130307534 | CURRENT SENSOR - A current sensor includes first and second magnetic sensors that are placed around a current line through which a current flows so that the current line is positioned therebetween, and that detect an induction field generated by the current. Each of the first and second magnetic sensors has a main sensitivity axis and a sub-sensitivity axis. The direction of the main sensitivity axis of each of the first and second magnetic sensors is oriented in a direction that is not orthogonal to the direction of the induction field. The directions of the main sensitivity axes of the first and second magnetic sensors are oriented in the same direction and the directions of the sub-sensitivity axes are oriented in the same direction, or the directions of the main sensitivity axes are oriented in opposite directions and the directions of the sub-sensitivity axes are oriented in opposite directions. | 11-21-2013 |
20130257469 | CURRENT SENSOR - A current sensor including electromagnetic conversion elements to detect magnetic fields generated when current flows through a current path under test, a chassis that stores the electromagnetic conversion elements and includes a channel to which the current path under test is disposed, and an installation member securable to the chassis, with the installation member including two arm units and a connecting unit to movably connect each end of the two arms, in which hook units are provisioned on the outer side of the two arm units, and holes are provisioned on the channel of the chassis to engaged with the hook units of the installation member, and when the current path under test and the installation member is disposed in the channel, the current path under test is securely supported, and at the same time the hook units and the holes are engaged. | 10-03-2013 |
20130249531 | CURRENT SENSOR - A current sensor includes a magnetic sensor module including a plurality of magnetic sensor units connected in series. The magnetic sensor units each include a first magnetic sensor element and a second magnetic sensor element which have sensitivity axes oriented in opposite directions. A first terminal of the first magnetic sensor unit is connected to a first potential source. A third terminal of the first magnetic sensor unit is connected to a second potential source. A second terminal and a fourth terminal of the last magnetic sensor unit are connected to constitute a sensor output terminal. The first terminal of each of the magnetic sensor units excluding the first magnetic sensor unit is connected to the second terminal of the next magnetic sensor unit and the third terminal thereof is connected to the fourth terminal of the next magnetic sensor unit. | 09-26-2013 |
20130221998 | CURRENT SENSOR - A current sensor includes a magnetoresistive element that has a stripe shape and that has a sensing axis in a certain direction. The magnetoresistive element includes element portions that are disposed so as to be spaced apart from each other in a longitudinal direction of the stripe shape, and permanent magnet portions, each of which is disposed between adjacent ones of the element portions. Each element portion has a layered structure including a free magnetic layer whose magnetization direction is changed with respect to an external magnetic field, a non-magnetic intermediate layer, and a ferromagnetic pinned layer whose magnetization direction is pinned. The permanent magnet portion includes a hard bias layer, and an electrode layer that is disposed so as to cover the hard bias layer. | 08-29-2013 |
20130221959 | ELECTRICAL CURRENT SENSOR AND METHOD OF MANUFACTURING THE SAME - An electrical current sensor includes a first laminated body having a magnetic detection element disposed over a first substrate, a protective film formed over the first substrate and the magnetic detection element, and a coil formed over the protective film, and a second laminated body having a shield layer formed over a second substrate and which is formed by bonding the first laminated body and the second laminated body to each other with an adhesion layer interposed therebetween such that the magnetic detection element and the shield layer face each other. | 08-29-2013 |
20130162245 | CURRENT SENSOR - A current sensor includes a current path to be measured, a neighboring current path that is provided in the vicinity of the current path to be measured, first and second magnetoelectric transducers having a main sensitivity axis parallel to a direction of a magnetic field generated by a current to be measured flowing in the current path to be measured, and are provided so that the directions of the magnetic fields generated by the current to be measured are applied in mutually opposite directions, and third and fourth magnetoelectric transducers having a main sensitivity axis being non-orthogonal to a direction of a magnetic field generated by the neighboring current while being orthogonal to the direction of the magnetic field generated by the current to be measured, and are provided so that the directions of the magnetic fields generated by the current to be measured are applied in mutually opposite directions. | 06-27-2013 |
20130156072 | ELECTRICAL STORAGE DEVICE TEMPERATURE MEASURING METHOD - An internal impedance of an electrical storage device is measured by using a signal of a frequency which ions in the electrical storage device are difficult to follow (e.g., a frequency equal to or higher than 10 kHz), and an internal temperature of the electrical storage device is calculated from a measured value of the internal impedance. | 06-20-2013 |
20130154631 | CURRENT SENSOR - A current sensor includes: a conductive member through which a current to be measured flows; first and second magnetic sensors which output output signals having reversed phases to each other due to an induction magnetic field from the current to be measured; and a control unit which performs differential operation on the output signal of the first magnetic sensor and the output signal of the second magnetic sensor, wherein sensing axis directions of the first magnetic sensor and the second magnetic sensor are fixed in the same direction, form a predetermined angle with respect to an application direction of the induction magnetic field from the current to be measured applied to the first magnetic sensor and the second magnetic sensor, and are fixed so that the induction magnetic fields are applied to the first magnetic sensor and the second magnetic sensor in reverse directions to each other. | 06-20-2013 |
20130154630 | CURRENT SENSOR - A current sensor includes: a first magnetic sensor and a second magnetic sensor; a first analog-to-digital converter which is connected to the first magnetic sensor and converts an output signal of the first magnetic sensor from an analog signal to a digital signal so as to be output; a second analog-to-digital converter which is connected to the second magnetic sensor and converts an output signal of the second magnetic sensor from an analog signal to a digital signal so as to be output; and an operation device which is connected to the first analog-to-digital converter and the second analog-to-digital converter, and outputs an operation value by subjecting the output signal of the first analog-to-digital converter and the output signal of the second analog-to-digital converter to differential operation. | 06-20-2013 |
20130127456 | MAGNETIC BALANCE TYPE CURRENT SENSOR - A magnetic balance type current sensor includes: a magnetic detection bridge circuit of which output varies due to an induced magnetic field from a current wire; a magnetic field attenuation unit that attenuates the induced magnetic field that acts on a magnetoresistive effect element; and a feedback coil which generates a cancel magnetic field that cancels the induced magnetic field in accordance with the output of the magnetic detection bridge circuit, and through which a current corresponding to the current to be measured flows when it enters a balanced state in which the cancel magnetic field and the induced magnetic field cancel each other, wherein the feedback coil is provided in such a manner that a direction of the cancel magnetic field that acts on the magnetic field attenuation unit is opposite to a direction of the induced magnetic field that acts on the magnetic field attenuation unit. | 05-23-2013 |
20130106412 | ELECTRICAL CURRENT SENSOR | 05-02-2013 |
20130099775 | CURRENT SENSOR - A current sensor includes a first support configured to include a cutout portion, a first magnetic detector element group configured to be provided in the first support, a second support configured to include a cutout portion, and a second magnetic detector element group configured to be provided in the second support. The cutout portion includes a supporting surface supporting a current line. In the current sensor, when the current line conducting therethrough a current to be measured is attached, the first support and the second support are displaced in the circumferential direction of the current line and fixed, and the current line is supported by supporting surfaces, in different positions in the axis line direction of the corresponding current line. | 04-25-2013 |
20130082698 | CURRENT SENSOR - A current sensor includes a magnetic sensor including magnetoresistive sensors configured to detect induction fields generated by a measurement current passing through a current line, a magnetic field application unit configured to apply to the magnetoresistive sensors a magnetic field having a direction perpendicular to sensitivity directions of the magnetoresistive sensors; and a computing unit configured to calculate from an output of the magnetic sensor a compensation value for the output. The computing unit is configured to be capable of calculating the compensation value from the outputs of the magnetic sensor obtained in at least two states in which magnetic fields applied by the magnetic field application unit are different from each other. | 04-04-2013 |
20130057275 | CURRENT SENSOR - A current sensor includes a magnetic balance sensor including a feedback coil that is disposed in the vicinity of a magnetic sensor element whose characteristics are changed by an inducted magnetic field from a current to be measured and generates a cancellation magnetic field for offsetting the inducted magnetic field, a shunt resistant that is connected in series with a current line for circulating the current to be measured, and a switch circuit that switches to magnetic balance detection at the time of a small current and switches to shunt resistance detection at the time of a large current. | 03-07-2013 |
20130057274 | CURRENT SENSOR - A current sensor includes a magnetoresistance effect element in which a plurality of magnetic detecting portions and a plurality of permanent magnet portions are alternately arranged so as to be in contact with each other. Each magnetic detecting portion is configured to include a ferromagnetic fixed layer whose magnetization direction is substantially fixed and a free magnetic layer whose magnetization direction changes with respect to an external magnetic field. Each permanent magnet portion is configured to include a hard bias layer applying a bias magnetic field to the free magnetic layer. An interval between the adjacent permanent magnet portions is 20 μm to 100 μm. | 03-07-2013 |
20130057273 | CURRENT SENSOR - A current sensor includes a magnetoresistive element and magnetic shields arranged between a current line and the magnetoresistive element. The magnetic shields include a flat first magnetic shield placed so as to attenuate the strength of an induction magnetic field applied to the magnetoresistive element and a flat second magnetic shield placed apart from the first magnetic shield in a direction in-plane with the main surface of the first magnetic shield so as to attenuate the strength of the induction magnetic field applied to the magnetoresistive element and reduce the influence of residual magnetization in the first magnetic shield. | 03-07-2013 |
20130057266 | MAGNETIC BALANCE TYPE CURRENT SENSOR - A magnetic balance type current sensor includes a magnetic balance type current sensor including a magnetoresistance effect element whose characteristic changes owing to an induction magnetic field from a current to be measured flowing through a conductor, a feedback coil configured to be disposed in the vicinity of the magnetoresistance effect element and generate a cancelling magnetic field cancelling out the induction magnetic field, a magnetic shield configured to attenuate the induction magnetic field and enhance the cancelling magnetic field, and a hard bias layer configured to be provided on or above the magnetic shield. | 03-07-2013 |
20130033260 | CURRENT SENSOR - A current sensor includes a pair of magnetic balance sensors and a switching circuit. The magnetic balance sensors each include a magnetic sensor element and a feedback coil. The magnetic sensor element varies in characteristics due to an induction field caused by measurement current. The feedback coil is disposed near the magnetic sensor element and produces a canceling magnetic field canceling out the induction field. Each of the magnetic balance sensors outputs, as a sensor output, a value corresponding to current flowing through the feedback coil when a balanced state in which the induction field and the canceling magnetic field cancel each other out is reached after the feedback coil is energized. The switching circuit turns on/off one of the magnetic balance sensors. | 02-07-2013 |
20120326703 | CURRENT MEASUREMENT APPARATUS - A current measurement apparatus includes multiple GMR elements and a calculation unit. The multiple GMR elements each include a pinned magnetic layer having a pinned magnetization direction, and a free magnetic layer having a magnetization direction to be changed by an external magnetic field. The calculation unit obtains the magnitude of a current to be detected, from outputs of the multiple GMR elements. The multiple GMR elements are disposed in ring shape around a conductor through which the current to be detected flows, and are electrically connected so as to form a series variable resistor by using the multiple GMR elements. The magnetization directions of the pinned magnetic layers are pinned in the same direction when viewed from an extension direction of the conductor at each of the positions of the elements. | 12-27-2012 |
20120306491 | MAGNETIC BALANCE TYPE CURRENT SENSOR - A magnetic balance type current sensor of the present invention includes a magnetic field detection bridge circuit including four magnetoresistance effect elements whose resistance values change owing to application of an induction magnetic field from a current to be measured. Each of the four magnetoresistance effect elements includes a ferromagnetic fixed layer formed by causing a first ferromagnetic film and a second ferromagnetic film to be antiferromagnetically coupled to each other via an antiparallel coupling film, a non-magnetic intermediate layer, and a soft magnetic free layer. The first and second ferromagnetic films are approximately equal in Curie temperature to each other, a difference in magnetization amount therebetween is substantially zero, and the magnetization directions of the ferromagnetic fixed layers of three magnetoresistance effect elements are different by 180 degrees from the magnetization direction of the ferromagnetic fixed layer of the remaining one magnetoresistance effect element. | 12-06-2012 |
20120290240 | CURRENT SENSOR FOR ELECTRIC WIRE - A current sensor includes an electric wire to be measured, a guide portion for guiding the electric wire to be measured, a holding portion for holding the electric wire to be measured, and four pairs of magnetic sensor elements arranged at intervals of 90 degrees along a circumference around a center axis which is a virtual arrangement axis of the electric wire to be measured. The outputs of the magnetic sensor elements of each pair are appropriately linearly combined and the linearly combined outputs of all the pairs are added. Hence, a space for guiding the electric wire to be measured can be easily allocated, and the effects of variation sources such as the displacement of the electric wire to be measured, a constant external magnetic field, and an external magnetic field generated by a neighboring electric wire are compensated for, whereby a small high-accuracy current sensor is provided. | 11-15-2012 |
20120263985 | CURRENT SENSOR - A current sensor includes a magnetic balance sensor and a switching circuit. The magnetic balance sensor includes a feedback coil which is disposed near a magnetic sensor element varying in characteristics due to application of an induction field caused by measurement current and which produces a canceling magnetic field canceling the induction field. The switching circuit switches between magnetic proportional detection and magnetic balance detection. The magnetic proportional detection is configured to output a voltage difference as a sensor output. The magnetic balance detection is configured to output, as a sensor output, a value corresponding to current flowing through the feedback coil when a balanced state in which the induction field and the canceling magnetic field cancel each other out is reached after the feedback coil is energized by the voltage difference. | 10-18-2012 |
20120092111 | Fe-BASED AMORPHOUS ALLOY, POWDER CORE USING THE SAME, AND COIL ENCAPSULATED POWDER CORE - An Fe-based amorphous alloy of the present invention has a composition formula represented by Fe | 04-19-2012 |
20120062224 | MAGNETIC BALANCE TYPE CURRENT SENSOR - A magnetic balance type current sensor includes a magnetoresistance effect element whose resistance value changes owing to the application of an induction magnetic field from a current to be measured; a feedback coil disposed in the vicinity of the magnetoresistance effect element and generating a cancelling magnetic field cancelling out the induction magnetic field; a magnetic field detection bridge circuit including two outputs causing a voltage difference corresponding to the induction magnetic field to occur; and a magnetic shield attenuating the induction magnetic field and enhancing the cancelling magnetic field, wherein, on the basis of the current flowing through the feedback coil at the time of an equilibrium state in which the induction magnetic field and the cancelling magnetic field are cancelled out, the current to be measured is measured, wherein the feedback coil, the magnetic shield, and the magnetic field detection bridge circuit are formed on a same substrate. | 03-15-2012 |
20120062215 | MAGNETIC-BALANCE-SYSTEM CURRENT SENSOR - A magnetic-balance-system current sensor includes: a magnetoresistive element, a resistance value of the magnetoresistive element being changed by applying an induction magnetic field generated by a measurement target current; magnetic cores disposed near the magnetoresistive element; a feedback coil disposed near the magnetoresistive element and configured to generate a cancelling magnetic field that cancels out the induction magnetic field; and a magnetic-field detecting bridge circuit having two outputs. The measurement target current is measured on the basis of a current flowing through the feedback coil when the induction magnetic field and the induction magnetic field and the cancelling magnetic field cancel each other out. The feedback coil, the magnetic cores, and the magnetic-field detecting bridge circuit are formed on a same substrate. The feedback coil is of a spiral type, and the magnetic cores are provided above and below the feedback coil. | 03-15-2012 |
20110265915 | Fe-BASED SOFT MAGNETIC ALLOY AND DUST CORE USING Fe-BASED SOFT MAGNETIC ALLOY - An Fe-based soft magnetic alloy includes: Fe; and a component R, wherein the component R contains at least one of P, C, B, and Si, there is a temperature difference of equal to or greater than 20° C. between a precipitation temperature of an α-Fe crystal phase and a precipitation temperature of an Fe compound, the Fe-based soft magnetic alloy is formed of a mixed-phase structure in which an amorphous phase and the α-Fe crystal phase are mixed, and a diameter of a crystallite of the α-Fe crystal phase is equal to or smaller than 50 nm, and a volume fraction of the α-Fe crystal phase to the total is equal to or lower than 40%. In addition, the composition formula is represented by Fe | 11-03-2011 |
20110221436 | CURRENT SENSOR - A current sensor including a magnetic detecting bridge circuit which is constituted of four magneto-resistance effect elements with a resistance value varied by application of an induced magnetic field from a current to be measured, and which has an output between two magneto-resistance effect elements. The four magneto-resistance effect elements have the same resistance change rate, and include a self-pinned type ferromagnetic fixed layer which is formed by anti-ferromagnetically coupling a first ferromagnetic film and a second ferromagnetic film via an antiparallel coupling film therebetween, a nonmagnetic intermediate layer, and a soft magnetic free layer. Magnetization directions of the ferromagnetic fixed layers of the two magneto-resistance effect elements providing the output are different from each other by 180°. The magnetic detecting bridge circuit has wiring symmetrical to a power supply point. | 09-15-2011 |
20110221434 | CURRENT SENSOR INCLUDING MAGNETIC DETECTING ELEMENT - A current sensor includes a magnetic detecting element, a bridge circuit including a plurality of resistance elements, and a feedback coil placed adjacent to the magnetic detecting element and generating a cancelling magnetic field for cancelling the induced magnetic field based on the output from the bridge circuit. The wiring patterns forming the bridge circuit are routed so as not to intersect with each other when seen in a plan view. Only the resistance elements constituting each series circuit of the bridge circuit are connected to each other by the wiring pattern in an enclosed area which encloses each resistance element constituting the bridge circuit, and the wiring pattern branched from the wiring pattern is connected to the terminal which is installed in a quantity of only one, outside the enclosed area. | 09-15-2011 |
20110221429 | CURRENT SENSOR - Disclosed is a current sensor including magnetic sensors disposed on a conductor having at least two separated current-carrying areas with different current magnitudes and detecting a magnetic field generated according to currents flowing through the conductor and a controller controlling outputs of the magnetic sensors, wherein the magnetic sensors are disposed in at least two respective areas having different current magnitudes and the controller switches outputs of the magnetic sensors. | 09-15-2011 |
20110204889 | CURRENT SENSOR - A current sensor includes a magnetic equilibrium sensor including a magnetic sensor element with characteristics changed by an inductive magnetic field from a measurement target current and a feedback coil provided in the vicinity of the magnetic sensor element and generating a canceling magnetic field canceling the inductive magnetic field, a shunt resistor connected to a current line through which the measurement target current flows, and a switching unit switching between shunt resistor detection of sensing and outputting a voltage difference of the shunt resistor, and magnetic equilibrium detection of sensing and outputting a current flowing in the feedback coil in an equilibrium state where current flows in the feedback coil according to the inductive magnetic field and the inductive magnetic field and the canceling magnetic field cancel each other. | 08-25-2011 |
20110202295 | CURRENT MEASURING DEVICE - A current measuring device includes a conductor in which detection target current flows, at least two magnetic sensors that detect change of magnetic field generated when the detection target current flows in the conductor, and a calculation unit that calculates magnitude of the detection target current from an output of the magnetic sensor. At least two magnetic sensors are provided at different distances from the conductor, and the calculation unit acquires distances between the magnetic sensors and the conductor to calculate magnitude of the detection target current using the distances. | 08-18-2011 |
20110199079 | CURRENT SENSOR AND BATTERY WITH CURRENT SENSOR - A current sensor includes a magnetic detection element having a resistance value changed by applying inductive magnetic field from measurement target current, a magnetic core provided in the vicinity of the magnetic detection element, and a coil generating magnetic field attenuating the inductive magnetic field. A constant level current in a predetermined range of output voltage of the magnetic detection element flows in the coil, and the measurement target current is detected on the basis of the output voltage of the magnetic detection element. | 08-18-2011 |
20110156798 | ALPS GREEN DEVICES CO., LTD. - Magnetoresistive effect elements R | 06-30-2011 |
20110080165 | MAGNETIC BALANCE TYPE CURRENT SENSOR - A magnetic balance type current sensor measures a measured current which flows in a feedback coil when electrical conduction is provided by a voltage difference according to an induction magnetic field from the measured current and an equilibrium state is reached in which the induction magnetic field and a cancel magnetic field cancel each other. Sensor elements in a pair are arranged at positions with magnetic field from the measured current. The magnetization direction of the pinned magnetic layer in the magnetoresistive effect element of one sensor element is aligned in a forward direction with respect to the magnetic field formed by the measured current. The magnetization direction of the pinned magnetic layer in the magnetoresistive effect element of the other sensor element is aligned in a reverse direction with respect to the magnetic field formed by the measured current. | 04-07-2011 |