A magnetic card reader comprising a groove for shifting of a magnetic card and a magnetic read head mounted on a first printed-circuit board so as to enable reading of a magnetic stripe of the magnetic card. The magnetic read head has a tunnel magnetoresistance sensor called a TMR magnetic sensor positioned in a recess of a side wall of the groove.

The present disclosure relates to a magnetic-sensor device comprising a circuit board made of an electrically insulating material and having conductor tracks, and comprising a permanent magnet surface-mounted on the circuit board, and a magnetic-field sensor connected to the conductor tracks of the circuit board. An SMD component for populating a circuit board is also proposed, which SMD component comprises a permanent magnet and a magnetic-field sensor.

A method of determining an orientation α,β of a magnet which is pivotable about a reference position having a predefined position relative to a semiconductor substrate, comprising: a) determining at least two of the following magnetic field gradients: i) a first magnetic field gradient dBx/dx; ii) a second magnetic field gradient dBy/dy; iii) a third magnetic field gradient dBz/dx; iv) a fourth magnetic field gradient dBz/dy; b) determining a first angle α based on at least one of the magnetic field gradients; c) determining a second angle β based on at least one of the magnetic field gradients. A sensor device is configured for performing this method. A sensor system includes such sensor device and a magnet, optionally connected to a joystick.

There is provided a fluid level sensing device for monitoring a fluid level in an engine container. The fluid level sensing device comprises a floating device moveable in response to changes in the fluid level, the floating device including a magnetic element, and a sensing circuit comprising at least one solid state magnetic sensor and at least one transistor electrically connected to the at least one solid state magnetic sensor. The magnetic element is configured to activate the at least one solid state magnetic sensor when the floating device is proximate thereto, the at least one solid state magnetic sensor configured to, when activated, drive the at least one transistor to generate a sensing signal indicative of the fluid level.

What is proposed is a current sensor comprising a current rail and comprising a magnetic field sensor, wherein the magnetic field sensor is configured to measure a magnetic field induced by a current flowing through the current rail, wherein a first insulation layer and a second insulation layer are arranged between the current rail and the magnetic field sensor, wherein an interface between the first insulation layer and the second insulation layer is free of a contact with the current rail and/or is free of a contact with the magnetic field sensor.

An improved system for measuring current within a power semiconductor module is disclosed, where the system is integrated within the power module. The system includes a point field detector sensing a magnetic field resulting from current flowing in one phase of the module. A lead frame conductor may be provided to shape the magnetic field and minimize the influence of cross-coupled magnetic fields from currents conducted in other power semiconductor devices within one phase of the module. Optionally, a second point field detector may be provided at a second location within the module to sense a magnetic field resulting from the current flowing in the same phase of the module. Each phase of the power module includes at least one point field detector. A decoupling circuit is provided to decouple multiple currents flowing within the same phase or to decouple currents flowing within different phases of the power module.

A control assembly for controlling a speed or torque of operation of an electric device includes a control assembly housing, a magnetic sensor, a magnetic element; and an actuator. The actuator moves relative to the control assembly and, responsive to that movement, the magnetic sensor and magnetic element are moved relative to each other between a first position and a second position so that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position. A control module is operably connected to the magnetic sensor and configured for controlling the electric device, and a magnetic shielding element is positioned within the control assembly housing to alleviate a magnetic signal source external to the control assembly from interfering with the sensing by the magnetic sensor.

A sensor device includes a current conductor designed to carry a measurement current, and a magnetic field sensor chip having a sensor element, wherein the magnetic field sensor chip is designed to detect a magnetic field at the location of the sensor element. The sensor device furthermore includes an encapsulation material, wherein the magnetic field sensor chip is encapsulated by the encapsulation material, and a soft magnet secured to the encapsulation material and designed to concentrate the magnetic field at the location of the sensor element. The magnetic field sensor chip and the soft magnet are galvanically isolated from one another by the encapsulation material.

Methods and apparatus for prosing a sensor IC package having first and second sets of magnetic field sensing elements and a third set of magnetic field sensing elements located between the first and second positions, wherein the first, second, and third sets of magnetic field sensing elements have a first axis of sensitivity and a second axis of sensitivity, wherein the first and second axes of sensitivity are orthogonal. The sensor IC package is positioned in relation to a target comprising a two-pole magnet and the first and second axes of sensitivity are perpendicular to an axis about which the target rotates. Differential signals are processed to determine an absolute position of the target. A first secondary angle position is generated from the first and third sets of magnetic field sensing elements.

A magnetic sensor includes a sensor arrangement including a plurality of resistive elements electrically arranged in an asymmetrical bridge circuit, where the plurality of resistive elements include a plurality of magnetic field sensor elements and a plurality of non-magnetic sensitive resistive elements. Moreover, a first total resistance of a first pair of resistive elements is different from a second total resistance of a second pair of resistive elements. A first leg of the asymmetrical bridge circuit includes a first magnetic field sensor element and a first non-magnetic sensitive resistive element. A second leg of the asymmetrical bridge circuit includes a second magnetic field sensor element and a second non-magnetic sensitive resistive element. The asymmetrical bridge circuit is configured to generate a differential signal based on sensor signals generated by the plurality of magnetic field sensor elements in response to a magnetic field impinging thereon.