A current sensor includes a magnetic detection unit capable of detecting the magnetism, a first magnetic shield and a second magnetic shield. The first magnetic shield includes a first shield section and two second shield sections respectively connected in the vicinity of the two ends thereof. The second magnetic shield includes a third shield section and two fourth shield sections respectively connected in the vicinity of the two ends thereof. Between the first shield section and the third shield section is a conductor placement region, and the magnetic detection unit is positioned between the first shield section and the conductor placement region and is provided at a magnetic field canceling position where the magnetic field in the second direction is substantially zero at non-energized times after a prescribed current has flowed in the conductor, in relationship to the length of the two fourth shield sections along the third direction.

A current sensor is described comprising an integrated circuit for sensing electric currents comprising an active side, the active side comprising at least one sensing element and at least one contact pad and a housing comprising material embedding the integrated circuit arranged for allowing electric connection to the at least two contact pads of the active side of the integrated circuit. The housing comprises at least one conductive via disposed outside the integrated circuit and connected to the at least one contact pad, for distributing signals from the at least one contact pad through the housing away from the active side of the integrated circuit.

The present disclosure provides a current detection circuit for a loudspeaker 500, comprising a first detection resistor RSP, a second detection resistor RSN, a sampling selection circuit 100, an input selection circuit 200, and a processing circuit 300. By adding the sampling selection circuit 100 and the input selection circuit 200, voltages on two ends of the corresponding detection resistors (RSP, RSN) are sampled according to the fact that potential differences of an output stage VOP and an output stage VON of a class-D audio power amplifier 400 are in different semi-periods, and the current of the loudspeaker 500 is obtained through processing, thereby detecting the current of the loudspeaker 500 without adding an anti-clipping distortion function to the class-D audio power amplifier 400.

According to one aspect, an integrated circuit includes: an electronic module configured to generate a voltage at an output, and an electronic control circuit coupled to an output of the electronic module, the electronic control circuit comprising an emissive electronic component. The electronic control circuit is configured to cause the emissive electronic component to emit light radiation as a function of a value of the voltage at the output of the electronic module relative to a value of an operating voltage of the electronic module, and the operating voltage is specific thereto during normal operation of this electronic module. The light radiation emitted by the emissive electronic component is configured to diffuse to an outer face of the integrated circuit.

An apparatus and a tool for installation of a measurement coil. The apparatus includes a tool and a holder. The tool includes a first portion and a second portion at least partially surrounding the first portion. The first portion is configured to receive a conductor and the second portion is configured to hold a measurement coil. The holder is configured to be detachably attached to the tool, wherein the holder is to be employed to install the tool holding the measurement coil onto a conductor. The first portion is configured to snap fit onto the conductor during installation, and the measurement coil at least partially surrounds the conductor when installed.

A motor iron-loss calculation device calculates an iron-loss value of a motor on the basis of a primary frequency and a q-axis current component in a dq-axis rotating coordinate system having a d axis in a rotor magnetic flux direction of the motor.

A current control device brings, after a target current has been changed to an upper side, a solenoid into a full-on state at a first timing that arrives in a predetermined control transition cycle shorter than an on-off cycle, determines whether an excitation current has become equal to or larger than a full-on threshold larger than the target current, brings the solenoid into a full-off state at a first timing that arrives in a predetermined energization switching cycle shorter than the on-off cycle after the excitation current has become equal to or larger than the full-on threshold, determines whether the excitation current has become equal to or smaller than a full-off threshold smaller than the target current, and causes a transition to a steady control at a first timing that arrives in the control transition cycle after the excitation current has become equal to or smaller than the full-off threshold.

An electrical panel adapter for an enclosure that is formed of at least one panel includes a main unit having a front portion and a rear portion. The rear portion is positioned inside the enclosure and includes a first plurality of electrical connections adapted to connect to electrical wires and/or equipment located inside the enclosure. The front portion extends through an aperture in the at least one panel and includes a second plurality of electrical connections adapted to connect to one or more electrical devices located outside the enclosure for measurement of both voltage and current inside the enclosure. The second plurality of electrical connections are electrically coupled to the first plurality of electrical connections. The electrical panel adapter enables electrical devices outside the enclosure to be electrically coupled to the electrical wires and/or equipment inside the enclosure without requiring the enclosure to be opened.

A chip with power-glitch detection is provided, which includes a power terminal receiving power, an inverter, and a back-up power storage device coupled to the power terminal. The inverter has an input terminal coupled to the power terminal. The back-up power storage device transforms the power to back-up power. The inverter is powered by the back-up power when a power glitch occurs on the power terminal, and the power glitch is reflected at an output terminal of the inverter.

A low-noise current sensor enables large dynamic range current measurements of alternating and direct current flows. The current sensor includes a first substrate, a first conductor, a magnetic flux conductor comprising a first portion orthogonal to the first conductor and a second portion, the second portion penetrating the first substrate, an inductive sensor comprising a first plurality of loops around the second portion of the magnetic flux conductor on the first substrate, wherein the first plurality of loops is orthogonal to the second portion of the magnetic flux conductor, and a Faraday cage that encloses the first plurality of loops and separates the first plurality of loops from the first conductor.