Abstract: A voltage source device, including a first voltage source configured to output a first voltage, source pathways to connect the first voltage source to a device under test, sensing pathways electrically coupled to the device under test; and circuitry configured to sample a second voltage at the device under test, determine a voltage difference between the first voltage and the second voltage, and adjust the first voltage based on the difference between the first voltage and the second voltage.

Abstract: In an embodiment, a semiconductor device is disclosed. The semiconductor device includes a plurality of output pins. Each of the output pins is electrically connected to an input pin of a buzzer and to a buzzer driver. The buzzer driver is configured to cause the buzzer to emit an audible sound. The semiconductor device further includes a plurality of ground switches. Each ground switch is configured to connect a corresponding output pin of the plurality of output pins to ground when closed. The semiconductor device further includes a current generator that is configured to supply a test current to a given output pin of the plurality of output pins and a clamp switch that is configured to connect the given output pin to an analog-to-digital converter.

Abstract: A current sensor is configured such that at least one magnetoelectric conversion element, a conductor, a signal processing IC, an IC supporting portion, and an element supporting portion are encapsulated with an encapsulating portion. The current sensor is comprised of a pair of first lead terminals that is partially exposed outside the encapsulating portion, is electrically connected to the conductor, inputs a measurement current to the conductor, and outputs the measurement current from the conductor; and a metal member that is partially exposed outside the encapsulating portion and is spaced apart from the conductor. The element supporting portion further supports the metal member on a surface on the same side as a first surface on which the IC supporting portion supports the signal processing IC.

Abstract: The disclosure relates to an integrated circuit and associated method and packaged integrated circuit. The integrated circuit comprises a first pad; a second pad; an active element having a node that is capacitively coupled to the first and second pads; a voltage or current source connected to the first pad; and a detection module connected to the second pad and configured to determine an electrical continuity between the second pad and the first pad.

Abstract: The invention relates to a spliced optical fiber comprising a first and second polarization-maintaining optical fiber connected at ends by splicing; to fiber optic current sensors; and to a method for protecting the spliced optical fiber against mechanical stress and/or humidity. A protection tube is arranged around the spliced optical fiber in a splice section of the spliced optical fiber. A first and second end of the protection tube is sealed to the spliced optical fiber by first and second sealing arrangement for protecting the splice.

Abstract: A phase frequency detector-based high-precision feedback frequency measurement apparatus and method: a Field Programmable Gate Array (FGPA) roughly measures a frequency fx of a measured time-frequency pulse by an equal-precision frequency measurement method; a Direct Digital Synthesizer (DDS) automatically synthesizes a frequency fx? according to the fx roughly measured by the FPGA; the fx and the fx? are sent to a phase frequency detector for performing phase frequency detection and then sent to the FPGA after passing through a charge pump, a low-pass filter circuit, and an (Analogue-to-Digital) A/D converter; the FPGA processes a frequency difference obtained by the phase frequency detector and then transmits the processed frequency difference to the DDS to form a negative feedback frequency measurement system so that the DDS continuously adjusts the fx? according to a frequency difference measurement result until the output of the DDS is stable.

Abstract: A method for detecting a metal residue present in an electric-resistance-welded steel pipe includes a first step of inserting the electric-resistance-welded steel pipe into an exciting coil while relatively moving the electric-resistance-welded steel pipe in a longitudinal direction and magnetizing the electric-resistance-welded steel pipe using a direct current at a field intensity capable of magnetizing the electric-resistance-welded steel pipe and the metal residue up to a magnetic saturation state by the exciting coil and a second step of inserting the electric-resistance-welded steel pipe into a detecting coil while relatively moving the electric-resistance-welded steel pipe in the longitudinal direction, detecting an induced electromotive force generated in the detecting coil by a change in a magnetic flux caused by the direct-current magnetization by the exciting coil in the first step as an output signal of the detecting coil, and detecting the metal residue present in the electric-resistance-welded s

Abstract: A magnetic field detection apparatus includes a magnetoresistive effect element and a conductor. The magnetoresistive effect element includes a magnetoresistive effect film extending in a first axis direction and including a first end part, a second end part, and an intermediate part between the first and second end parts. The conductor includes a first part and a second part that each extend in a second axis direction inclined with respect to the first axis direction. The conductor is configured to be supplied with a current and thereby configured to generate an induction magnetic field to be applied to the magnetoresistive effect film in a third axis direction orthogonal to the second axis direction. The first part and the second part respectively overlap the first end part and the second end part in a fourth axis direction orthogonal to both of the second axis direction and the third axis direction.

Abstract: A method determines an insulation resistance of the high-voltage network in an electric or hybrid vehicle, in which a controllable continuous voltage source connected to the body and to a single first terminal of a high-voltage battery of the vehicle is provided, a first resistor being connected in series to the source between the single first terminal and the body and a second resistor being connected in series between the first resistor and the source, consecutive voltage setpoint values are applied between the body and the single first terminal, a measurement signal of the voltage at the terminals of the second resistor is acquired for each setpoint value, adaptive filtering of the signal is carried out and an estimate made, in a recursive manner, of a vector of the filter transfer function coefficients, providing an update of the filtering coefficients, the insulation resistance being determined based on the estimate.

Abstract: A current sensor includes an electrical-conduction member, a magnetoelectric converter and a shield. The shield includes a first shield and a second shield arranged such that surfaces are opposed to and spaced away from each other. A part of the electrical-conduction member and the magnetoelectric converter are located between the surface of the first shield and the surface of the second shield. The part of the electrical-conduction member located between the first shield and the second shield extends in an extension direction along the surface of the second shield. The second shield has two sides aligned in a lateral direction perpendicular to the extension direction, and has a plurality of extending parts extending toward the first shield at the sides and being aligned with and separated from each other in the extension direction. The magnetoelectric converter is located between the plurality of extending parts.

Abstract: A method for estimating the state of an electrical switching apparatus, the switching apparatus including separable electrical contacts configured to be coupled to an electrical conductor, and an electromagnetic actuator, controlled by a control circuit and including a movable core, coupled to the separable contacts, and a coil, which is passed through by a coil current. The method: includes measuring, by means of sensors associated with the coil, values of the coil current in a time interval, while the electromagnetic actuator is kept in a stable and in particular closed position, and computing, by means of an electronic control device of the switching apparatus, one or more values of a magnetic flux of the coil from the measured coil-current values, and using coil-voltage and coil-resistance values known beforehand.

Abstract: A diagnosis system is configured to diagnose an apparatus including a driver device. The system includes an acquisition unit configured to acquire waveform data indicating a waveform related to a current to be supplied to the driver device, and a determination unit configured to determine a condition of the apparatus. The determination unit is configured to obtain, based on the waveform data, a change caused by a component of a force in a particular direction applied to the driver device, and to determine the condition of the apparatus based on the obtained change. The diagnosis device determines the condition of the apparatus accurately.

Abstract: A current sensor includes a wiring board, a shield, an insulating sensor housing, and a shield adhesive. The wiring board and the shield are accommodated in the sensor housing. The sensor housing has a shield support part to support the shield, and a shield adhesion part. An application surface of the shield adhesion part is further from the shield than a contact surface of the shield support part. The shield is mounted on the contact surface of the shield support part, and the shield adhesive is disposed between the application surface of the shield adhesion part and the shield. The shield and the wiring board are aligned with and spaced from each other in the sensor housing.

Abstract: A substrate, comprising one or more first conductive layers, one or more second conductive layers, and a dielectric material that is arranged to encapsulate, at least in part, the first conductive layers and the second conductive layers. The one or more second conductive layers are electrically coupled to the first conductive layers. The first conductive layers and the second conductive layers are arranged to form a conductor. The first conductive layers are arranged to define a first rift in the conductor.

Abstract: The application provides a method for measuring a shortest distance between capacitances and a method for evaluating a capacitance manufacture procedure. The method for measuring the shortest distance between the capacitances includes: obtaining a distance between tangent lines of adjacent surfaces of two adjacent capacitances, and taking the distance between the tangent lines of the adjacent surfaces of the two adjacent capacitances as the shortest distance between two capacitances. The tangent lines of the adjacent surfaces of the two adjacent capacitances have a same direction, and the direction of the tangent lines is perpendicular to a preset arrangement direction of the capacitances.

Abstract: Systems and methods for operating and calibrating electrical parameter measurement devices are provided herein. The devices may include a current sensor that includes a plurality of magnetic field sensors positioned around a measurement area that receive a current carrying conductor under test. The sensor may include a plurality of concentric rings of magnetic field sensors that provide accurate measurements that ignore magnetic fields from conductors or other components outside of the measurement area. The sensors may be used to determine the position of a conductor under test, and such information may be used to produce accurate measurements by accounting for the conductor's position. A calibration system may also be provided that is operative to generate calibration data that is subsequently used to provide more accurate measurements. The calibration data may include one or more lookup tables, coefficients for one or more mathematical formulas, or other types of data.

Abstract: The present disclosure relates to an AC/DC closed-loop current sensor, including a magnetism gathering iron core, a TMR chip, a signal processing circuit, a signal generator, and a feedback coil. The TMR chip is arranged at an air gap of the magnetism gathering iron core and connected to the signal processing circuit. The signal processing circuit is connected to the signal generator. The feedback coil is wound around the magnetism gathering iron core and connected to the signal generator. The signal processing circuit is configured to select from the induced signal of the TMR chip and make an amplification to obtain a current signal component and send the current signal component to the signal generator. The signal generator is configured to adjust a current output to the feedback coil based on the current signal component, and output a measurement result of the selected current signal component.

Abstract: The disclosure relates to a printed circuit board arrangement with a printed circuit board with at least two current conducting layers. The current conducting layers extend in an axial direction of the printed circuit board and are arranged in succession in a thickness direction of the printed circuit board. The printed circuit board arrangement has a busbar which is arranged on a lateral surface of the printed circuit board and is in contact with at least one part of the current conducting layers of the printed circuit board.

Abstract: A semiconductor device includes an output-stage element and a detection element, each of the output-stage element and the detection element including: a channel-formation region deposited at an upper part of a drift region; a main electrode region deposited at an upper part of the channel-formation region; and a gate electrode buried via a gate insulating film in one or more first trenches in contact with the main electrode region, the channel-formation region, and the drift region, wherein the first trenches used in common with the detection element and the output-stage element extend in a planar pattern, and a plurality of second trenches extending in parallel to each other in a direction perpendicular to the first trenches interpose the detection element so as to separate the channel-formation region of the output-stage element and the channel-formation region of the detection element from each other.

Abstract: A machine tool includes a first motor that receives load fluctuation when the workpiece is processed and a second motor that operates to change the plural kinds of tools. An information processing device takes out the current of the first motor measured by the first current sensor for each signal that occurs at the changing operation of the plural kinds of tools and is measured by the second current sensor, and relatively compares a non-negative function value that has a current value at each taken-out segment as a parameter for each number of times of processing on the workpiece, thereby detecting a tool abnormality for each kind of the tool.