Abstract: A method of detecting partial corona discharge in a targeted circuit of an electrical apparatus, comprises the steps of: wrapping a Rogowski coil around a leg of the targeted circuit to produce a Rogowski coil signal that represents electrical current rate of change in the leg of the targeted circuit; coupling the Rogowski coil signal to a three-dimensional display device that may represent the dimension of time, the dimension of amplitude as a function of a time, and the dimension of duration of amplitude as a function of time in successive periods of that have a preselected duration; monitoring the display device to detect deviations of the duration of amplitude as a function of time from a normal waveform in the leg of the targeted circuit; and correlating ones of the detected deviations of the duration of amplitude as a function of time from a normal waveform that exceed a preselected deviation level as indicative of partial corona discharge within the targeted circuit.

Abstract: A resistor element that is coupled between each of voltage measurement points of a measurement object and a voltage measurement circuit is further coupled to a path of a constant current between a power supply side constant current circuit and a ground side constant current circuit. By controlling the operation of the power supply side constant current circuit and the ground side constant current circuit with a control circuit, the control circuit switches the switch circuit on and off to prevent a voltage drop due to an electric current that turns on the switch circuit.

Abstract: A printed board, includes: a first shield portion, configured to reduce an influence of an electric field in combination with a casing accommodating the printed board, at least a part of the first shield portion being formed with a plurality of through holes; and a second shield portion, configured to reduce the influence of the electric field in combination with the casing, at least a part of the second shield portion being formed with a plurality of through holes, wherein the second shield portion is arranged alongside of the first shield portion.

Abstract: Provided is an IC current measuring apparatus provided between an IC and a substrate. The IC current measuring apparatus electrically connects each of a plurality of IC-facing terminals and a different one of a plurality of substrate-facing terminals. Especially, resistances are each inserted into a path between an IC terminal targeted for measurement and a substrate terminal corresponding thereto. Furthermore, the IC current measuring apparatus is provided with terminals each used to measure a voltage between both ends of an inserted resistance corresponding thereto. Accordingly, a measurer who measures current flowing through an IC-facing terminal can measure the current flowing through the IC-facing terminal by providing the IC current measuring apparatus between the IC targeted for measurement and the substrate and measuring a voltage between both ends of an inserted resistance corresponding to the IC terminal through which current he/she wishes to measure flows.

Abstract: Clamp meter with detachable clamp and a clamp storage area. The clamp meter includes a clamp and a housing. The clamp includes a measurement end and a handle portion. The measurement end includes a first measurement portion and a second measurement portion. The handle portion includes a first handle and a second handle. The housing includes a recess configured to removably receive the clamp when the clamp is not in use. The housing is connected to the clamp via a cord. When the clamp is received in the recess, the first measurement portion and the second measurement portion are positioned completely within the recess, the first handle and the second handle extend at least partially from the recess, and the recess prevents the clamp from being used. The clamp is capable of being removed from the recess in a one-handed use position.

Abstract: A clamp jaw assembly for a clamp meter is provided. The clamp jaw assembly comprises a housing containing a clamp jaw core disposed within a shield. The housing, shield, and core of the clamp jaw assembly are configured to provide an extended creepage and clearance path from an exterior of the housing to a surface of the core.

Abstract: A power meter is disclosed. The power meter may be used to determine the electric power being delivered by a conductor. In one such power meter there is a substrate, an inductive pickup coil attached to the substrate, a conductor, and a detector. The pickup coil may be printed on the substrate.

Abstract: A current measuring apparatus is disclosed. The current measuring apparatus comprises a power supply unit, an impedance setting module, and a current measuring unit. The power supply unit is adapted to provide an electric power to an electronic apparatus. The impedance setting module is adapted to provide at least one impedance value to the electronic apparatus so that the electronic apparatus is able to be activated in response to the electric power and the impedance value. The current measuring unit is adapted to show a current consumption value of the electronic apparatus under the activated state.

Abstract: An electrical power meter for monitoring electrical power supplied to a load comprises a meter case, a plurality of current transformers within the meter case for sensing the electrical current in a plurality of line conductors of a power distribution system, and a plurality of pairs of terminals on the meter case for connecting the meter to the line conductors. The terminals of each pair are located on opposite sides of one of the current transformers, and a current transformer bus bar connects the two terminals and extends through one of the current transformers. A plurality of guides adjacent selected pairs of the terminals position lugs connecting line conductors to the selected pairs of terminals.

Abstract: A voltage sensing circuit includes a voltage divider and a voltage rectifier. The voltage divider divides a first output voltage on a first output voltage line to a first divided output voltage. The voltage divider comprises a first metal foil and a first capacitor. The first metal foil and the first output voltage line can form a first capacitive component. The first capacitive component is coupled in series with the first capacitor. The first capacitive component and the first capacitor can generate the first divided output voltage. The voltage rectifier is coupled to the voltage divider and can rectify the first divided output voltage to a sensing voltage indicative of the first output voltage.

Abstract: An apparatus can be coupled to at least two lines for transmitting a differential signal, which is substantially symmetrical to a predefined reference potential, and/or for receiving such a differential signal. The apparatus includes a balancing unit, which can be coupled to the at least two lines and which includes a center tap. A monitoring unit is coupled to the center tap on the input side and is configured such that it monitors a center tap voltage between the center tap and the predefined reference potential and detects errors if the center tap voltage is greater than a predefined threshold value.

Abstract: This invention provides a clamp meter with safe trigger mechanism which allows an operator to take electrical measurements of the conductors safely, particularly in case of the electrical conductor elements situated in congested or awkward locations and positions. In the preferred embodiment of the present invention, the trigger is placed at the underside of said clamp meter so as to allow convenient access to it for the fingers of a hand while the clamp meter is held in the hand. The trigger mechanism of the invention may be operated with single or multiple fingers. The invention also allows the hand to maintain its ‘clinched-fist’ position throughout the measurement process, thereby eliminating the need to open the hand any time during the process. The invention thus makes the electrical parameter measurement operation using clamp meters safer than for the conventional meters.

Abstract: An apparatus for online partial discharge testing includes a split-core radio-frequency current transformer sensor, an actuation subassembly, and a biasing member. The current transformer sensor has a first portion, a second portion, and a sensor hinge operably engaged between the first portion and the second portion. The actuation subassembly includes an elongate first member secured to the first portion of the current transformer sensor, a second member secured to the second portion of the current transformer sensor and configured to be movable relative to the first member, and a third member engaged with the second member and configured to be movable relative to the first member. The biasing member is configured to pivotally bias the first portion and the second portion of the current transformer sensor toward each other relative to the sensor hinge, with the biasing member secured relative to the first member.

Abstract: An optical voltage transformer is connected with an external electric device and includes a primary electrode to which a measured voltage is applied by the external electric device, a first secondary electrode provided oppositely to the primary electrode, an insulation layer provided between the primary and first secondary electrodes and constituting an insulation cylinder integrally formed with the primary and first secondary electrodes, a ground layer provided on an outer circumference of the insulation cylinder and around the first secondary electrode for securing a capacitance by interposing the insulation layer between the ground layer and the first secondary electrode, and an electro-optic element for measuring a voltage between the first secondary electrode and the ground layer.

Abstract: A current sensor structure includes a substantially ring-shaped magnetic core comprising layers of magnetic plates to be accommodated in an insulating case and secured to the case via a molding compound. Projections protruding in the magnetic plate's thickness direction are provided either on a front-side wall portion of the case in the thickness direction or on a surface of the magnetic core in the thickness direction. By virtue of, the surface of the magnetic core is supported by the front-side wall portion via the projections, leaving a gap between this surface and the wall portion to the same height as that of the projections. The gap is filled with the molding compound. Dilative and contractive deformation of the case in the direction orthogonal to the thickness direction is absorbed by the molding compound in the gap to prevent the stress from acting upon the magnetic core.

Abstract: A more precise and cost effective means than previously commercially available for measuring alternating currents up to 100 amperes in the frequency range from direct current to 100 kilohertz can be measured with precision approaching 0.001% employs a shield around a resistive network. The shield is electrically isolated from the resistive network, but acts as a heat sink to draw heat generated by the resistive network away, promoting fast stabilization times. The shield also provides electrical shielding from outside interference allowing the geometric arrangement of elements in the resistive network to minimize induced inductance and capacitance.

Abstract: A clamp meter for measuring voltage and current simultaneously includes a microcontroller unit, a current-side analog-digital converter unit electrically connected to the microcontroller unit and a current-measuring unit, a voltage-side analog-digital converter unit electrically connected to the microcontroller unit and a voltage-measuring unit. By providing dedicated analog-digital converter unit to the current-measuring unit and the voltage-measuring unit, the clamp meter is capable of measuring voltage and current precisely and simultaneously.

Abstract: A process monitor measures the absolute value of unit sample resistors and transistors on a common Integrated Circuit (IC) substrate. This information can be used to adjust the gain of an amplifier assembly to a desired value, or to determine the true, corrected gain of such the amplifier assembly. Also, process information about process variations corresponding to the common IC substrate can be collected from the process monitor. Gain correction factors are derived and applied to the amplifier assembly to compensate for the process variations using the gain value and the process information.

Abstract: By subdividing the free layer of a GMR/TMR device into multiple sub-elements that share common top and bottom electrodes, a magnetic detector is produced that is domain stable in the presence of large stray fields, thereby eliminating the need for longitudinal bias magnets. Said detector may be used to measure electric currents without being affected by local temperature fluctuations and/or stray fields.

Abstract: An optical sensor assembly has a base unit, an optical current sensor, and a magnetic concentrator. The optical current sensor is mounted on the base unit and includes a polarized light input, a reflective prism, and a light output. The magnetic concentrator defines an airgap and is mounted on a concentrator housing such that the magnetic concentrator fits around the current carrying cable when the base unit is hung from the current carrying cable by hooks and when the concentrator housing is moved to a closed position. The reflective prism of the base unit is operably positioned in the airgap of the magnetic concentrator when the concentrator housing is in the closed position. The assembly further includes a voltage sensor operably positioned in the base unit for measuring the voltage of the current carrying cable.

Abstract: A semiconductor device having a lateral semiconductor element includes a semiconductor substrate, a first electrode on the substrate, a second electrode on the substrate, and an isolation structure located in the substrate to divide the substrate into a first island and a second island electrically insulated from the first island. The lateral semiconductor element includes a main cell located in the first island and a sense cell located in the second island. The main cell causes a first current to flow between the first electrode and the second electrode so that the first current flows in a lateral direction along the surface of the substrate. The first current is detected by detecting a second current flowing though the sense cell.

Abstract: A system for power measurement in an electronic device includes a sensing unit, an analog-to-digital converter (ADC) and a controller. The sensing unit senses voltage across a power source and modulates a carrier signal based on the sensed voltage. The ADC converts a combination of the modulated carrier signal and audio signals received by the electronic device to generate a digitized combined signal and provides the digitized combined signal to the controller. The controller separates digitized modulated carrier signal and digitized audio signals. The digitized modulated carrier signal is demodulated to generate an output signal that provides a measure of the power consumed by the electronic device.

Abstract: A voltage detection and measurement circuit is provided. The circuit includes a first Zener diode operatively coupled to an AC power input line and a second Zener diode operatively coupled to a reference voltage line. The first and second Zener diodes are configured to pass portions of input AC voltage from the AC power input line to generate output waveforms.

Abstract: Exemplary embodiments of the present invention disclose a modular testing assay. According to various embodiments of the present invention, the sensor arrays, or microplates, are removably attached to a substrate. In some embodiments, the electrical connection between the sensors of the sensor array and the substrate provide for the removal of one sensor array or microplate with another or similar sensor array. The sensor arrays can be aligned using various types of alignment devices or the substrate can be configured to allow various alignments and spatial orientations of one or more sensor arrays.

Abstract: A solar monitor measures electrical characteristics of a designated solar device within an array of solar devices that are coupled in series. The solar monitor includes a charge storage element and a charger coupled to the charge storage element to establish a positive voltage and/or a negative voltage on the charge storage element. A switch within the solar monitor is coupled in a shunt configuration with the designated solar device and with a subsequent device in the array. The switch selectively couples the charge storage element to the designated solar device to vary an operating current that flows between the designated solar device and the subsequent solar device. The solar monitor includes a current detector to measure the current of the designated solar device, and a voltage detector to measure the voltage of the designated solar device.

Abstract: In a method for reading a programmable anti-fuse block of a high-voltage integrated circuit a first voltage is applied to a first pin of the HVIC, the first voltage being lowered to a second voltage at a first node. Current is shunted from the first node, thereby lowering the second voltage to a third voltage. An isolation circuit block is then activated to couple the third voltage to a common node of the programmable anti-fuse block, the common node being coupled to a plurality of anti-fuses, each anti-fuse having a programmed state. A read signal is generated that causes a voltage potential representative of the programmed state of each anti-fuse to be latched into a corresponding latch element.

Abstract: The present disclosure describes configurations for current shunt sensors and current shunt sensor assemblies having improved electromagnetic cross-talk rejection that can be used in single-phase/split-phase and poly-phase power metering applications. Some embodiments of the current shunt sensors and current shunt sensor assemblies reduce the need for a shielding material around current shunt sensors in single-phase/split-phase and poly-phase power metering applications. Some embodiments of the current shunt sensors achieve improved electromagnetic cross-talk rejection through a substantially symmetrical arrangement of component parts along the primary path of current flow. Some embodiments of the current shunt sensors achieve improved electromagnetic cross-talk rejection by symmetrical configurations that, in operation, induce complementary parasitic currents or voltages that substantially cancel each other out and do not substantially affect primary current flow through the current shunt sensor.

Abstract: A current sense circuit, including a voltage regulator, for detecting current conducted by a device under test (DUT) for a wide range of currents, while still providing fine granularity for detecting low/small currents. Two current branches/paths may be established to the supply terminal of the DUT. A switching device, e.g. a transistor device, may be operated to enable a first current branch of the two current branches, or both current branches to conduct current, responsive to the size of the current flowing in the first current branch. The total current conducted by the DUT may be equivalent to a sum of the respective currents flowing in the two current branches. When the switching device is turned off, very small currents conducted by the DUT may be measured with fine granularity. When the switching device is turned on, substantially larger currents conducted by the DUT may be measured.

Abstract: The invention relates to a method for determining the type of connection of at least two electric devices (5) whereby each device comprises a similar connector arrangement. The aim of the invention is to increase the reliability during the starting up process and during the operation of a system which comprises several electric units (5). According to the invention, a first device (5) modifies the voltage on the connector arrangement (11) and the modified voltage is determined as a first voltage, such that a second device (5) determines a second voltage on at least the connector arrangement (11) and determines whether an electric connection exists or not between the connector arrangements (11) of the devices (5) by comparing the determined comparison of the voltages.

Abstract: Disclosed herein are electrochemical sensor dispensing methods and apparatus. The sensors dispensers can include an elongate body having a proximal end and a distal, the elongate body including a proximally positioned dispensing surface with an opening for dispensing a sensor. A storage chamber having a series of connected sensors is positioned distally and can feed a proximally positioned sensor feeder mechanism. The feeder mechanism includes an elongate member having a first end and second end, the second end adapted to pivot between a sensor engaging position and a sensor feeding position.

Abstract: Disclosed herein are systems and methods for providing a compressible interconnect for allowing electrical communication between an electronics unit and an analyte sensor in an on-body analyte monitoring device. In other embodiments, systems and methods are provided for reducing the Z-height of an on-body analyte monitoring device by utilizing novel interconnects.

Abstract: A current sensor includes a coils located within the integrated circuit die and inductively coupled to a conductor located in the integrated circuit package holding the die. The inductors sense the current in the conductor and supply the sensed signal to an integrator that supplies a voltage indicative of the current in the conductor.

Abstract: A system for testing power line carrier signal integrity or strength in a building electrical system includes a transmitter module electrically coupled to a first electrical outlet and configured to transmit a power line carrier signal over the building electrical system. The system also includes a receiver module electrically coupled to a second electrical outlet and configured to receive the power line carrier signal from the transmitter module. The receiver module includes circuitry configured to determine whether at least one of the integrity and strength of the power line carrier signal is sufficient for a load control system installed in the building electrical system to communicate with relay modules installed in the building electrical system using power line carrier signals. The receiver module includes a user interface configured to provide an indication of at least one of the integrity and strength of the power line carrier signal.

Abstract: In another embodiment, the invention provides a clamp meter configured to receive a removable and rechargeable battery pack. The clamp meter includes a main body having a first axis, a handle, a clamp, a trigger, and a display. The handle has a second axis and includes a first recess configured to receive the battery pack. The first recess includes at least first and second electrical terminals which are exposed when the battery pack is not inserted into the first recess. The second axis forms an oblique angle with the first axis, and the battery pack is inserted into the first recess along the second axis. The clamp is coupled to the main body, aligned with the first axis, and operable to measure an electrical characteristic of a conductor based on an induced current. The trigger is operable to selectively open and close the clamp, and the display configured to display an indication of the electrical characteristic.

Abstract: A Rogowski sensor is provided for measuring a current of an electrical conductor. The sensor has a Rogowski coil, which has an electrical winding resistor, and an integration device which is connected to the Rogowski coil and is intended to generate an output signal which is proportional to the electrical current to be measured by the Rogowski sensor. The integration device is formed by the winding resistor of the Rogowski coil and a capacitance which is connected to the two winding connections of the Rogowski coil, and for the output signal from the integration device to be formed by the voltage applied to the capacitance.

Abstract: A faulted circuit indicator device for mounting on an overhead conductor cable for electrical power distribution systems to detect an abnormally high electric current therein includes a housing having an enclosure formed therein and current sensing circuitry for detecting the presence of the abnormally high electric current in the cable. An indication unit is responsive to the current sensing circuitry to produce a visual indication in the presence of the abnormally high electrical current. A clamping mechanism formed of a yoke and a pair of opposed pressure plates is disposed above the housing for securely mounting the cable therein to detect the abnormally high electric current. Compression springs are provided for resiliently urging the pair of opposed pressure plates upwardly for automatically trapping the cable in a fixed central position between the yoke and the pair of opposed pressure plates.

Abstract: A high-voltage sensing capacitor as an interface apparatus that may be used to attach an indicator unit to a high-voltage AC electrical bus and to provide safety to maintenance personnel. The high-impedance nature of the sensing capacitor effectively isolates the indicator unit from the high-voltage source to which it is connected. Multiple electrical phases can be interfaced using a plurality of such sensing capacitors. The sensing capacitor can be directly mounted to a high-voltage busbar. The indicator unit may provide visual and/or audible alerts to maintenance personnel when high voltage conditions are detected on the busbar by the sensing capacitor. The sensing capacitor is comprised of a portable, unitary capacitive structure that includes a molded insulator body encapsulating two electrodes. The electrodes of the capacitor only partially or incompletely overlap within the insulator body.

Abstract: A shunt for measuring current passing through a conductor. The shunt includes a first section and a second section connected in series with the conductor, and a coaxial cable connected between the first and second sections. An outer conductor of the first section surrounds an internal conductor having a resistance lower than that of the outer conductor of the first section. An outer conductor of the second section surrounds an internal conductor having a resistance higher than that of the internal conductor of the second section. The dimensions of the first and second sections are the same. An internal conductor of the cable is connected between the two sections, and an outer conductor of the cable is connected to the outer conductors of the two sections. The voltage across the outer and inner conductors of the cable is proportional to the current passing through the conductor.

Abstract: A protection element (e.g., an arrester) protects a piece of equipment to be protected, from surge currents line terminals and an earth terminal. Surge current detection devices are provided on respective conductors connected to the arrester. Each of the surge current detection devices is to detect the surge current penetrated into a conductor for a short period of time, and includes a magnetic flux concentration member by which a magnetic flux produced by the penetrated surge current is concentrated in a given detection area at a high density, and a ferromagnetic material sheet positioned on the given detection area. The ferromagnetic material sheet includes a recording layer which is able to record and erase the penetration state of the surge current. A plurality of microcapsules are arranged in the recording layer, and each of the microcapsules contains a suitable liquid, and a plurality of magnetic particles suspended in the suitable liquid.

Abstract: An embodiment of a voltage-measuring circuit includes: a first resistor connected to a first measurement node; a second resistor connected to the first resistor and a second measurement node; a configuration switch configured to, in response to a control signal, selectively interconnect the first and second resistors, during enable and disable phases of the control signal respectively, into and out of either a parallel or a series configuration; and a control and measurement circuit configured to provide the control signal, receive a first measurement voltage from the first and second measurement nodes during the enable phase, and receive a second measurement voltage from the first and second measurement nodes during the disable phase.

Abstract: An aspect of the present disclosure relates to an electrical receptacle configured to receive a plug having two or more prongs and capable of being connected to an associated load. The electrical receptacle may include a housing and a housing cover mounted on the housing including apertures for receiving at least one of the prongs. In addition, the receptacle may include at least two electrical contacts for engaging the prongs positioned in the housing, a magnetic current sensor defining an opening, wherein the magnetic current sensor opening is operatively coupled to an opening defined by at least one of the apertures. Wherein when one of the prongs is inserted through one of the apertures, the prong extends to through the magnetic current sensor and engages at least one of said electrical contacts.

Abstract: A meter for recording voltage and current on a transformer has current sensors positioned on a housing such that the meter can be mounted to the terminals of the transformer. The device also includes two voltage leads which can be attached to the transformers terminals. An instrumentation module is contained in the housing and is coupled to the current sensors and the voltage leads, the instrumentation module being adapted and configured to record voltage and current measurements from the current sensors and voltage leads. The instrumentation module includes a signal processing module for processing the voltage and current signals to provide other information such as energy and accumulated in-phase current data. Finally, the device includes a communications module coupled to the instrumentation module for communicating the voltage and current measurements and the derived data to a remote user.

Abstract: A current sensor includes a housing having a pair of first slits, a bus bar supported by the housing and electrically connected to a battery post provided on a battery, an annular shield member arranged so as to surround an axis extending in a direction in which a current is flowed in the bus bar, and a magnetic-electric conversion element provided on the housing to detect a magnetic flux density of a magnetic field generated when the current is flowed in the bus bar and produce an electric signal. The magnetic-electric conversion element is arranged between the first slits. The shield member is inserted into the first slits so that the shield member is mounted on the housing.

Abstract: The invention provides a current sensor that may be folded over a conductor without the need to sever the conductor or thread the conductor through the current sensor. In one embodiment, the current sensor includes an outer body having a first folding portion and a second folding portion coupled to the first folding portion. The current sensor also includes a soft ferromagnetic body disposed within the outer body comprising a first core element and a second core element. The first and second core elements form a lumen when the first and second folding portions are folded. The lumen is configured to receive a conductor. The current sensor also includes a magnetic field detector to sense a current in the conductor. The magnetic field detector is disposed at least partially between the first and second core elements when the first and second folding portions are folded.

Abstract: An optical sensor assembly has a base unit, an optical current sensor, and a magnetic concentrator. The optical current sensor is mounted on the base unit and includes a polarized light input, a reflective prism, and a light output. The magnetic concentrator defines an airgap and is mounted on a concentrator housing such that the magnetic concentrator fits around the current carrying cable when the base unit is hung from the current carrying cable by hooks and when the concentrator housing is moved to a closed position. The reflective prism of the base unit is operably positioned in the airgap of the magnetic concentrator when the concentrator housing is in the closed position. The assembly further includes a voltage sensor operably positioned in the base unit for measuring the voltage of the current carrying cable.

Abstract: A method of measuring a current of a current carrying cable teaches the first step of providing an optical sensor assembly comprising a base unit, and an optical current sensor mounted on the base unit for transmitting a beam of polarized electromagnetic radiation to an optical fiber. A light detector is also provided having a first channel that operably connecting the light detector to an analog to digital converter through a programmable gain amplifier, a second channel that operably connects the light detector directly to the analog to digital converter, and a processor operably connected to the analog to digital converter. The optical sensor assembly is mounted adjacent the current carrying cable, and the fiber optic is operably connected to a light detector. A plurality of factors are then evaluated from rotation information from the light detector, by using the first and second channels for analog to digital conversion operably connected with the processor.

Abstract: A method and apparatus for detecting at least two process variables in a loop powered circuit. The method includes the steps of (a) powering the loop, detecting a first process variable value during a first time interval, (b) detecting a second process variable value during a second time interval after the expiration of the first time interval, where the detected process variable values are represented by the magnitude of a current passing through the loop circuit.

Abstract: Methods and systems for monitoring voltage are disclosed, including: a plurality of circuit points, a first bus configured to electrically couple to a voltage measurement device, a first set of switches configured to selectively electrically couple a first subset of the circuit points to the first bus, at least one other bus configured to electrically couple to at least one of: the voltage measurement device and another voltage measurement device, and at least one other set of switches configured to selectively electrically couple at least one other subset of the circuit points to the other bus.

Abstract: A current sensor includes a shunt and at least one resistant element. The shunt conveys an electric current, and has a resistance which varies with the shunt's temperature. A resistant element, which has a resistance that varies with its own temperature, is electrically connected between the shunt and an output terminal of the current sensor. At least a portion of the resistant element is in thermal contact with a predetermined location on the shunt, so that the resistant element's resistance varies in accordance with the shunt temperature. The current sensor may be connected to an amplifier whose gain varies in accordance with the resistance of the resistant element. The variation in the resistance of the resistant element causes a change in the amplifier gain, which compensates for changes in the shunt resistance due to change's in the shunt's temperature. In some embodiments, a second resistant element is connected between the shunt and a second output terminal.

Abstract: A magnetic sensor integrated circuit includes a plurality of magnetically sensitive elements, and at least one test conductor positioned adjacent to at least one of the magnetically sensitive elements and configured to generate a differential magnetic field that is adapted to be applied to the plurality of magnetically sensitive elements during a test mode.