Abstract: A current sensor for measuring a current flowing through a conductor includes a sensor substrate, a magnetoelectric converter formed on a surface of the sensor substrate and configured to output a signal changing with an applied magnetic field, and a magnetic shield that surrounds the sensor substrate and the conductor to magnetically shield the inside from the outside. The output signal of the magnetoelectric converter changes with a magnetic filed applied along the formation surface of the sensor substrate. The magnetic shield has at least one gap for reducing magnetic saturation in the magnetic shield. The gap and the sensor substrate are located at the same height in a z-direction orthogonal to the formation surface of the sensor substrate.

Abstract: A current sensor for measuring a current flowing through a conductor includes a sensor substrate, a magnetoelectric converter formed on a surface of the sensor substrate and configured to output a signal changing with an applied magnetic field, and a magnetic shield that surrounds the sensor substrate and the conductor to magnetically shield the inside from the outside. The output signal of the magnetoelectric converter changes with a magnetic filed applied along the formation surface of the sensor substrate. The magnetic shield has at least one gap for reducing magnetic saturation in the magnetic shield. The gap and the sensor substrate are located at the same height in a z-direction orthogonal to the formation surface of the sensor substrate.

Abstract: A rotation detecting device includes a magnetoresistive unit comprising a pair of magnetoresistive sensing elements arranged in line symmetry, and a biasing magnet that generates magnetic flux. The magnetoresistive unit is arranged so that its line of symmetry extends in the direction of the magnetic flux generated by the biasing magnet. As a result, an output of the magnetoresistive unit does not change when the magnetic flux passes along the line of symmetry whether operating in a high temperature condition or a room temperature condition. By setting the threshold level to this output voltage, the output of the magnetoresistive unit can be shaped into a pulse signal without changing it in correspondence with temperatures.

Abstract: A rotation detecting device includes a magnetoresistive unit comprising a pair of magnetoreistive sensing elements arranged in line symmetry, and a biasing magnet that generates magnetic flux. The magnetoresistive unit is arranged so that its line of symmetry extends in the direction of the magnetic flux generated by the biasing magnet. As a result, an output of the magnetoresitive unit does not change when the magnetic flux passes along the line of symmetry whether operating in high temperature condition or room temperature condition. By setting the threshold level to this output voltage, the output of the magnetoresistive unit can be shaped into a pulse signal without changing it in correspondence with temperatures.

Abstract: In a position detecting device for a moving object, such as a camshaft gear, having ridges and valleys, magnetoresistive elements are disposed in positions offset in the rotation direction of the moving object from the magnetic center of a bias magnetic field projected by a bias magnet. The direction of the bias magnetic field is different when the moving object is in a ridge position from when it is in a valley position. A mid-point potential of the MREs is taken as the output of an MRE bridge to obtain an output value which is different when the moving object is in the ridge position from when it is in the valley position. It is thus possible to distinguish between the ridge position and the valley position of the moving object.