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| Number | Title | Issue Date |
| 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 an input current supplied to the electrical device. Mathematical const... | 02/07/2012 |
| 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 large stray fields, thereby eliminating the need for longitudinal bias ... | 01/03/2012 |
| 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 orthogonal spatial directions and supplies measurement signals... | 09/13/2011 |
| 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 current in the conductor and supply the sensed signal to an integrat... | 08/02/2011 |
| 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 electronic circuit also includes at least one of a reset conductor or ... | 07/05/2011 |
| 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 connected to the Rogowski coil and is intended to generate an output signal... | 06/28/2011 |
| 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 separated from one another by a nonmagnetic layer positioned therebe... | 05/31/2011 |
| 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 cross-sectional area, wherein a current flowing through the conductor establish... | 03/29/2011 |
| 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 switch and a second voltage at the output port of the switch. The cu... | 03/15/2011 |
| 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 V-shaped conductor line and a pair of magnetoresistive elements disposed alo... | 03/08/2011 |
| 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 Rogowski coil generates a second voltage output signal. A relay device com... | 03/08/2011 |
| 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 induced electromotive force caused by a measurement target current, e... | 03/01/2011 |
| 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 line to which the trap is connected by injecting a signal into the t... | 01/04/2011 |
| 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 conductor. The measuring device includes a processing unit connected to th... | 10/26/2010 |
| 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 alternately supply respective indications of the sensed current accor... | 10/26/2010 |
| 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 alternating current i vary with time, the direction of magnetization ... | 10/05/2010 |
| 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 large stray fields, thereby eliminating the need for longitudinal bias ... | 07/06/2010 |
| 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 the surface of the substrate and an insulating layer disposed between t... | 06/29/2010 |
| 7737678 | Magnetic sensor and current sensor A current sensor capable of detecting current magnetic fields generated by a current to be detected with high precision and stability while realizing a compact configuration is provided. The current sensor includes: a conductor generating a current magnetic field in... | 06/15/2010 |
| 7719257 | Current sensing module and assembly method thereof A current sensing module for disposal proximate a conductor is disclosed. The current sensing module includes a housing having a first section and a second section that together define an opening for receiving the conductor therethrough. The second section is in ope... | 05/18/2010 |
| 7705583 | Micro-electromechanical system (MEMS) based current and magnetic field sensor A micro-electromechanical system (MEMS) current and magnetic field sensor for sensing a magnetic field produced by a conductor includes a magneto-MEMS component for sensing the magnetic field and an interference-MEMS component for sensing an interference, wherein th... | 04/27/2010 |
| 7667452 | Detector circuit for measuring current Detector circuit for measuring relatively strong currents including a main current transformer (1) and two substantially identical auxiliary current transformers (2, 3) where a main current (I1) induces magnetomotive forces in said main curr... | 02/23/2010 |
| 7663358 | Current sensor and molding method thereof A current sensor which can measure accurately current of a wide range, at low cost. A C-shaped shield plate is positioned around a flow direction of a current of the bus bar. When the current flows through the bus bar, magnetic flux density of a magnetic field is ge... | 02/16/2010 |
| 7626376 | Electric current detector having magnetic detector An electric current detector has a bus bar with a current direction changing section for changing a direction of electric current through the bus bar, and a magnetic detector disposed in the current direction changing section of the bus bar. The current direction ch... | 12/01/2009 |
| 7589517 | Adaptive slope compensation for switching regulators A system, method, and apparatus are arranged to provide adaptive slope compensation in a switching regulator that includes an inductor. A control loop of the switching regulator is responsive to a ramp signal. A ramp generator that includes a capacitor circuit and a... | 09/15/2009 |
| 7583073 | Core-less current sensor Core-less current sensor comprises two parallel conductors carrying equal currents in the same direction. The magnetic field in mid location of the two parallel conductors carrying equal currents in the same direction for all current magnitudes is zero in absence of... | 09/01/2009 |
| 7579824 | High-precision Rogowski current transformer A high-precision Rogowski current transformer, the Rogowski coil is realized in a single printed circuit board while maintaining both the outside field rejection of a traditional Rogowski coil, and the increased output voltage similar to the multiple printed circuit... | 08/25/2009 |
| 7567074 | Measuring device for measuring differential current, trip module comprising one such measuring device and switchgear unit having one such module A device for measuring differential current designed to measure differential current in at least two current lines, comprising a first magnetic circuit designed to surround the current lines, forming a primary circuit of a transformer, a first secondary winding woun... | 07/28/2009 |
| 7564233 | Shielded Rogowski coil assembly and methods Shielded Rogowski coil systems having separate interface cables and methods for eliminating and monitoring noise in signal transmissions over the cables. An embodiment of a Rogowksi coil system includes a first Rogowski coil surrounding a conductor and generating a ... | 07/21/2009 |
| 7557562 | Inverted magnetic isolator A current determiner comprising a first input conductor and a first current sensor, formed of a plurality of magnetoresistive, anisotropic, ferromagnetic thin-film layers at least two of which are separated from one another by a nonmagnetic layer positioned therebet... | 07/07/2009 |
| 7538540 | Bus bar current detecting apparatus A current detecting portion A includes a magnetic shield attached to a bus bar BU, a magnetic shield attached to a bus bar BV, and a magnetic shield attached to a bus bar BW. On bus bars BV, BU and BW arranged in parallel, current sensors SU, SV and SW are arranged ... | 05/26/2009 |
| 7528592 | Magnetoresistive sensor for current sensing A system for sensing current in one or more first electrical conductors includes a frame and a retainer configured to receive the one or more first electrical conductors and constrain relative movement between the one or more first electrical conductors and the fram... | 05/05/2009 |
| 7525300 | Current measuring device and method A current measuring device measures the current flowing through each conductor which connects a power supply with a motor. Coreless current sensors are arranged between pairs of the conductors. Coefficients which represent a relationship between a fixed standard cur... | 04/28/2009 |
| 7518354 | Multi-substrate integrated sensor An electronic circuit includes a first substrate having a first substrate surface and a device supported by the first substrate surface. The device is selected from among a passive electronic component and an active electronic component. The electronic circuit also ... | 04/14/2009 |
| 7511471 | Magnetic bridge electric power sensor A magnetic bridge power sensor including a magnetic bridge having plural magnetic circuits, an excitation coil to generate a magnetic flux in one of the magnetic circuits, and a magnetic flux detection coil to detect the magnetic flux in one of the magnetic circuits... | 03/31/2009 |
| 7508188 | 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 switch and a second voltage at the output port of the switch. The cu... | 03/24/2009 |
| 7504820 | Current sensor with alternating magnetic excitation A current measurement device includes a current sensor including a magnetic circuit, a plurality of windings including at least one excitation winding charged with the excitation of the magnetic circuit, and at least one detection winding. The sensor is equipped wit... | 03/17/2009 |
| 7501808 | Current sensing device A magnetic core is shaped in a ring having a gap and disposed to surround a conductive wire. When an electric current flows in the conductive wire, a magnetic field is generated in the gap. A sensor package includes a Hall element and a lead frame, which are embedde... | 03/10/2009 |
| 7479778 | Adaptive slope compensation for switching regulators A system, method, and apparatus are arranged to provide adaptive slope compensation in a switching regulator that includes an inductor. A control loop of the switching regulator is responsive to a ramp signal. A ramp generator that includes a capacitor circuit and a... | 01/20/2009 |
| 7463016 | Current sensor A current sensor includes a conductor line, and a magnetic sensor in which resistance value changes according to a current magnetic field produced by a current to be detected flowing through the conductor line. The conductor line includes: a pair of parallel portion... | 12/09/2008 |
