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8179122 |
Current/voltage detection printed board and current/voltage detector
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...
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8159211 |
Clamp jaw assembly
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...
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8142237 |
Device for measuring a current flowing in a cable
An exemplary embodiment relates to a measuring device for measuring a current flowing in a first cable. The measuring device includes a measuring shunt in the form of a plate connected in series...
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8125214 |
Determining electrical current using at least two sensors at a known distance from each other
The invention relates to methods and devices for accurately monitoring the electrical current in electrolytic cells used to produce metals, including but not limited to aluminum, or other chemical...
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8111059 |
Electric current locator
The disclosure herein provides an apparatus for location of a quantity of current vectors in an electrical device, where the current vector has a known direction and a known relative magnitude to...
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8106646 |
Sensor circuit
Provided is a sensor circuit that is small in circuit scale, but is capable of temperature compensation. A reference voltage circuit (BL1) which compensates a temperature includes only a voltage...
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8089265 |
MTJ sensor including domain stable free layer
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...
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8089291 |
Electromagnetic wave generation source searching method and current probe used therefor
A junction-current probe is provided which can measure a current flowing in a junction port adapted to connect a circuit board or an electronic apparatus to a chassis under the condition that the...
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8085055 |
Branch current monitoring system
A power monitoring system that reduces the need for transient voltage suppressors while using current transformers on an associated support operating using a current mode.
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8076932 |
Device and method for measuring the position of a mobile part
A device for measuring the position of a mobile part (4), includes: at least one magnetic node (10) capable of modulating the amplitude of an excitation magnetic field according to the amplitude of...
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8076931 |
Current and magnetic field sensors, control method and magnetic core for said sensors
The invention relates to a magnetic field sensor comprising at least one magnetic core (10) in which the magnetic cycle of the magnetic core is characterised in that the absolute value of the third...
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8076944 |
Systems and methods for detecting electrical line faults
Methods and systems for detecting changes in currents are disclosed, including: dividing a main current into two or more subcurrents, combining a first magnetic flux of a first subcurrent of the...
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8058881 |
Method for checking the current flow through individual wires of a braided wire, and apparatus for carrying out the method
In order to make it possible to detect a fault location, safely, reliably and with a high response sensitivity, in a braided wire which has a plurality of individual wires, an electric current is...
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8018221 |
Apparatus for measuring an electric current flowing through an electrical conductor
An apparatus for measuring an electric current flowing through an electrical conductor (1), comprising a measuring device which detects a magnetic field formed by the electrical conductor in three...
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7990132 |
Current sensor including an integrated circuit die including a first and second coil
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...
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7977934 |
High bandwidth open-loop current sensor
Open-loop electrical current sensor (1) for measuring the electrical current flowing in a primary conductor, comprising a magnetic circuit (3) with an air-gap (4), and a magnetic field sensing...
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7973527 |
Electronic circuit configured to reset a magnetoresistance element
An electronic circuit includes a magnetoresistance element for providing an output signal proportional to a magnetic field. The magnetoresistance element also has a hysteresis characteristic. The...
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7969139 |
Rogowski sensor and method for measuring a current
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...
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7965085 |
Differential-mode current sensor
Systems, methods, and devices are disclosed, including a ground-fault sensor that has a plurality of conductors each disposed one inside of another except for an outer conductor and a field sensor...
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7956763 |
Faulted circuit indicator device having an improved clamping mechanism
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...
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7952345 |
Inverted magnetic isolator
A current determiner comprising a first input conductor and a first current sensor, formed of a p.lurality of magnetoresistive, anisotropic, ferromagnetic thin-film layers at least two of which are...
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7940042 |
Method and apparatus for testing magnetoresistive effect element
A method for testing an MR element includes a step of obtaining a ferromagnetic resonance frequency f0 of the MR element to be tested by applying an external magnetic field in a track-width...
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7923986 |
Device and method for measuring a current flowing in an electrical conductor
A device for measuring a current flowing in an electrical conductor. The device comprises a magnetic circuit coupled to an electrical conductor. The magnetic circuit has an air gap and a magnetic...
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7920975 |
Methods of detecting anomalies in ambient alternating current fields
Methods of detecting anomalies in ambient alternating current (AC) fields are provided. An exemplary embodiment of such a method includes the steps of placing an AC field sensor in an ambient AC...
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7915885 |
Sensor system and method
A sensing system includes a conductor with a current flow path therethrough. A first location of the conductor defines a first cross-sectional area and a second location defines a second...
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7911198 |
Arrangement and method for measuring a current flowing in an electrical conductor
An arrangement and a method are used for measuring current flowing in an electrical conductor with a magnetic circuit that has an air gap for coupling to the electrical conductor. The air gap of...
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7911197 |
Arrangement for measuring the current flowing in an electric conductor
The invention relates to an arrangement for measurement of a current flowing in an electrical conductor having a magnetic circuit, for coupling to the electrical conductor, wherein the magnetic...
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7906955 |
On-chip current sensing methods and systems
A switch regulator module includes a switch and a current sensing module. The switch has an input port and an output port. The current sensing module senses a first voltage at the input port of the...
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7902812 |
Rogowski coil assembly and methods
A Rogowski coil assembly includes a first Rogowski coil that surrounds a conductor and generates a first voltage output signal. A second Rogowski coil also surrounds the conductor. The second...
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7902811 |
Current sensor
The present invention provides a current sensor of smaller and simpler configuration, capable of measuring a current to be detected with high precision and stability. A current sensor has a...
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7898240 |
Current measuring apparatus
The present invention provides a current measuring apparatus having an improved structure to inhibit the possible adverse effect of a current in a different phase and the possible generation of an...
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7895004 |
Method for measuring electric current in a plurality of conductors
A method and system for measuring electric current in a plurality (n) of conductors. According to the invention, the method comprises the following steps: an electric current transducer is place...
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7888937 |
Beam current sensor
A beam current sensor is composed of a cylindrical super-conductive body having a bridge unit formed on the outer diameter side wherein a beam passes through the inner diameter side. The sensor...
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7876086 |
Current measuring device for measuring the electrical current flowing in an electrical conductor electrically isolated from the current measuring device
A current measurement device is configured to measure electrical current in a primary conductor that is electrically insulated from the current measuring device. The current measuring device...
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7863886 |
Method for determining the resonant frequency(s) of an energized power line carrier line (wave) trap
A method for testing a line trap of the type whose blocking characteristics are a function of its resonant frequencies without requiring the line trap to be de-energized along with the transmission...
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7855546 |
Current sensor having core with magnetic gap
In a current sensor having a magnetic gap, a main body is divided into a first case segment having a terminal and a second case segment. An opening is formed in the main body. A magnetic sensor...
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7852617 |
Main circuit terminal assembly for vacuum circuit breaker
The present invention is to provide a main circuit terminal assembly for a vacuum circuit breaker, which can prevent temperature increase by increasing a surface area of a main circuit conductive...
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7834614 |
Method and apparatus for evaluating rapid changes in current
In order to detect and evaluate changes in current as a result of electric arcs, a sensor signal, differentiated on the basis of time, is produced with a sensor-dependent frequency bandwidth whose...
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7834613 |
Isolated current to voltage, voltage to voltage converter
A current sensor is provided that employs a primary winding that carries the current to be measured, and a secondary winding that controls the flux inside the magnetic core, provides a sample of...
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7821252 |
Three-phase current sensor
A three-phase current sensor for measuring currents (IPH1, IPH2, IPH3) running in three conductors of a three-phase conductor system comprises a first magnetic measuring device (D1) and a second...
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7821251 |
Current sensor
A current sensor includes a sensing circuit for sensing current and supplying indications thereof. The current sensor also includes two or more output terminals coupled to the sensing circuit that...
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7821253 |
Direct current measuring device having magnetic sensors for current generated magnetic fields
A direct current measuring device having at least one first magnetic sensor and at least one second magnetic sensor sensitive to a magnetic field generated by an electric current flowing in a...
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7808229 |
Magnetic device and frequency analyzer
A magnetic device and a frequency analyzer are provided as those industrially utilizing a resonance phenomenon of a direction of magnetization of a magnetoresistive element. Since polarities of an...
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7800512 |
Utility power restoration indicator for power management system
A system for indicating a power condition in a conductor includes an indicator constructed to provide notification to a user of a utility power condition, and a sensor non-electrically connected to...
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7800377 |
Apparatus and method for current transformer adaptation
An apparatus and method for current transformer adaptation for extending a distance between a current sensing location, having a load current carrying load conductor, and a current measuring...
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7759933 |
Magnetic amplification device comprising a magnetic sensor with longitudinal sensitivity
The invention relates to a magnetic amplification device comprising a magnetic sensor with longitudinal sensitivity, having a first piece of magnetic material and a second piece of magnetic...
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7755347 |
Current and voltage measurement device
The present invention is directed to a current and/or voltage measurement device that allows a user to easily and safely determine current flow by clamping a semi-permanent wrap-around monitor...
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7750620 |
MTJ sensor based method to measure an electric current
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...
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7746056 |
Integrated sensor
An electronic circuit includes a substrate having a surface and a device supported by the surface of the substrate. The electronic circuit also includes a magnetic field transducer disposed over...
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7741832 |
Micro-electromechanical system (MEMS) based current and magnetic field sensor using tunneling current sensing
A micro-electro-mechanical system (MEMS) current sensor for sensing a magnetic field produced by an electrical current flowing in a conductor includes a first fixed element and a moving element....
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