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.

An active switching rectifier circuit uses a MOSFET and applies a current based control to turn the MOSFET on and off. The MOSFET has its source and drain connected between an AC phase or neutral line and the DC output. A current detection and control circuit has an input current conductor coupled in series with the source-drain current of the MOSFET; it outputs a switching control signal based on the current in its input conductor and applies the signal to the gate of the MOSFET for on/off control. A Hall-effect switch may be used in the current detection and control circuit. The rectifier may also include a voltage supply circuit for supplying a DC voltage to the current detection and control circuit. The rectifier circuit can be adapted for various configurations including single-phase half-wave, center-tap dual-phase full-wave, single-phase full-wave, and three-phase full-wave.

A dielectric member includes a first bobbin, which is located on a radially outer side of a first core, a holder, which receives a magnet, and a second bobbin, which is located on a radially outer side of a second core. A first terminal and a second terminal are fixed to a terminal fixing portion. A wire continuously forms a first connecting portion, which is connected to the first terminal, a first coil portion, which is wound around the first bobbin, a first crossover portion, which traverses from the first coil to the second bobbin over the holder, a second coil portion, which is wound around the second bobbin, a second crossover portion, which traverses from the second coil portion to the first coil portion over the holder, and a second connecting portion, which is connected to the second terminal.

A dielectric member includes a first bobbin, which is located on a radially outer side of a first core, a holder, which receives a magnet, and a second bobbin, which is located on a radially outer side of a second core. A first terminal and a second terminal are fixed to a terminal fixing portion. A wire continuously forms a first connecting portion, which is connected to the first terminal, a first coil portion, which is wound around the first bobbin, a first crossover portion, which traverses from the first coil to the second bobbin over the holder, a second coil portion, which is wound around the second bobbin, a second crossover portion, which traverses from the second coil portion to the first coil portion over the holder, and a second connecting portion, which is connected to the second terminal.

A magnetic sensor (1) includes: a non-magnetic substrate; and a sensitive element part (31) including plural sensitive elements (311) and (312) connected in parallel, each of the sensitive elements (311) and (312) being provided on the substrate, being composed of a soft magnetic material, having a longitudinal direction and a short direction, being provided with uniaxial magnetic anisotropy in a direction crossing the longitudinal direction, and sensing a magnetic field by a magnetic impedance effect.

It is provided a barrier assembly for determining an extent of opening of an openable barrier. The barrier assembly comprises the openable barrier and barrier frame around the openable barrier; a magnet, a magnetic sensor and a status monitoring device. One of the magnet and the magnetic sensor is provided in the barrier and the other of the magnet and the magnetic sensor is provided in the barrier frame; and the status monitoring device is configured to determine an extent of opening of the openable barrier based on a direction of a magnetic field detected by the magnetic sensor.

In a non-limiting embodiment, a magnetic memory device includes a memory component having a plurality of magnetic storage elements for storing memory data, and one or more sensor components configured to detect a magnetic field external to the memory component. The sensor component outputs a signal to one or more components of the magnetic memory device based on the detected magnetic field. The memory component is configured to be terminated when the signal is above a predetermined threshold value. In some embodiments, a magnetic field is generated in a direction opposite to the direction of the detected external magnetic field when the signal is above the predetermined threshold value.

A sensor arrangement for controlling a function in a motor vehicle comprises an electric coil for providing a magnetic field; a magnetic field sensor; and a magnetic flux element for conducting the magnetic field between the coil and the magnetic field sensor. The magnetic flux element may be supported such that it can move, and shaped such that the magnetic field in the range of the magnetic field sensor is dependent on a position of the flux element. Furthermore, there may be a processor for determining the position of the flux element based on the magnetic field determined by means of the magnetic field sensor.

It is provided a barrier assembly for determining an extent of opening of an openable barrier. The barrier assembly comprises the openable barrier and barrier frame around the openable barrier; a magnet, a magnetic sensor and a status monitoring device. One of the magnet and the magnetic sensor is provided in the barrier and the other of the magnet and the magnetic sensor is provided in the barrier frame; and the status monitoring device is configured to determine an extent of opening of the openable barrier based on a direction of a magnetic field detected by the magnetic sensor.

A magnetic sensor 1 includes: a nonmagnetic substrate 10; a sensitive element 31 laminated on the substrate 10, the sensitive element 31 being made of a soft magnetic material, the sensitive element 31 having a longitudinal direction and a transverse direction and having uniaxial magnetic anisotropy in a direction intersecting the longitudinal direction, the sensitive element 31 being configured to sense a magnetic field by a magnetic impedance effect; and a pair of thin-film magnets 20a, 20b laminated on the substrate 10 and disposed to face each other in the longitudinal direction across the sensitive element 31, the pair of thin-film magnets 20a, 20b being configured to apply a magnetic field in the longitudinal direction of the sensitive element 31.