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Document Title |
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7622909 |
Magnetic field sensor and electrical current sensor therewith
A magnetic field sensor comprises a magnetic field sensing cell and a magnetic shield comprising at least two parts separated by an air-gap and surrounding the magnetic field sensing cell...
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7615987 |
Device for determining electrical variables
A device for determining electrical variables, having a housing and an electrical main conductor, which is provided for conducting a load current, and which has a measuring section, having an...
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7606298 |
Method of testing remote power line carrier pick-up coil
Methods to test the operation of the pick-up coil without having to de-energize the power line serving as the power line carrier in order to perform testing on the pick-up coil. A series of test...
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7602169 |
Input cancellation circuit
A system and method are provided for isolating an input without adding significant distortion and without significantly adversely affecting the bandwidth of input circuits. In one embodiment, a...
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7583075 |
Subtractive current measuring method
The present invention is a subtractive current measuring system for a power receptacle. The system may comprise one or more of the following features: (a) a power receptacle; (b) a current carrying...
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7554319 |
Circuits and methods for voltage sensing
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....
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7545138 |
Precision, temperature-compensated, shielded current measurement device
A current measurement device using a Rogowski coil having a generally toroidally shaped core with flattened faces, a first winding in one direction, a second winding forming a return loop, and a...
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7545137 |
Current detecting circuit
A current detecting circuit includes a current detecting module includes a detecting resistor, a voltage transmitting module, and a current adjusting module including four field effect transistors,...
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7538539 |
Current meter with reduced range switching and load transients
An ammeter for ATE instrumentation includes an amplifier, a first current measuring circuit coupled to the amplifier's power supply leads, and a second current measuring circuit coupled to the...
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7532000 |
Method and system for measurement of current flows in fastener arrays
A method and apparatus for simultaneously measuring current flows through fasteners in a multi-structure composite joint is provided. The method comprising inserting a printed circuit board between...
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7525423 |
Automated meter reading communication system and method
An automated meter reading power line communications system is provided, which may include, in one embodiment, measuring the utility usage of a first customer premises to provide first utility...
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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....
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7521917 |
Method and apparatus for testing material integrity
In accordance with one embodiment, the present technique provides a testing apparatus for testing material integrity in an object. The testing apparatus includes an electrical conductor and a...
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7518529 |
Monitoring device for a medium voltage overhead line
A monitoring device ( 1 ) for monitoring the electrical properties of a medium voltage overhead line ( 3 ) in a medium voltage network comprises three separate measurement sensors ( 2 a, 2 b, 2 c...
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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...
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7495430 |
MEMS based current sensor using magnetic-to-mechanical conversion and reference components
A micro-electromechanical system (MEMS) current sensor is described as including a first conductor, a magnetic field shaping component for shaping a magnetic field produced by a current in the...
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7453257 |
System and method for precision current source
Systems and methods of the present disclosure, in accordance with one or more embodiments, include a current source adapted to provides volts*sec at a fixed frequency, a magnetic core adapted to be...
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7453256 |
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...
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7449877 |
Current measurement apparatus
Apparatus and methods are provided for a system for measurement of a current in a conductor such that the conductor current may be momentarily directed to a current measurement element in order to...
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7402991 |
Wide bandwidth attenuator input circuit for a measurement probe
A wide bandwidth attenuator input circuit for a measurement probe has a Z 0 attenuator circuit coupled in series with a compensated RC attenuator circuit. The series attenuator elements of the Z 0...
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7397234 |
Current sensor with reset circuit
A current sensor includes an integrator for providing an output signal, responsive to a detected current, and a reset circuit. The reset circuit, responsive to a control signal, resets the...
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7388372 |
Electrical system with magnetoresistive sensors
An electrical system includes a first monolithic circuit. The first monolithic circuit may include a first magnetoresistive sensor operable to sense magnetic flux and produce an output signal...
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7385402 |
Light source current sensing circuit and driving circuit in a display device
A current sensing circuit for sensing a current flowing through a LED bank and a driver circuit for driving the LED bank are provided. The current sensing circuit includes: a matched transistor...
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7378837 |
Method and system for calibrating a micro-electromechanical system (MEMS) based sensor using tunneling current sensing
A system and method for controlling a tunneling current between a first element and a second element of a micro-electro-mechanical system (MEMS) sensor. The system includes a tunneling current...
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7358717 |
Input by-pass circuit for a current probe
An input by-pass circuit for a current probe has first and second switches coupled between current probe inputs and current sensing circuit inputs. A switch control is coupled to the switching...
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7355381 |
Current sensor with reduced sensitivity to parasitic magnetic fields
A current sensor includes: several magnetic-field-sensitive components which are disposed on a support such as to be distributed around a conductor through which a current to be measured flows, and...
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7323859 |
Auto-measuring universal meter
An auto-measuring universal meter is disclosed. The auto-measuring universal meter includes a main unit having a display and a single button. A pair of test probes is electrically connected to the...
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7321227 |
Measuring electrical current flowing through a conductor
A current measurement device for measuring an electrical current, in particular in a contactless manner, in a current-carrying conductor, using a coil arrangement having a coil conductor and a...
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7315161 |
Micro-electromechanical system (MEMS) based current and magnetic field sensor having capacitive sense components
A micro-electromechanical system (MEMS) based current & magnetic field sensor includes a MEMS-based magnetic field sensing component having a capacitive magneto-MEMS component, a compensator and an...
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7295133 |
Electrical circuit monitoring device
The present invention is directed to a method of (1) providing continuous monitoring of various operating and environmental characteristics using RFID technology or similar wireless technology and...
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7292022 |
Current detection resistor, mounting structure thereof and method of measuring effective inductance
A mounting structure for current detection resistor device has a feature that voltage detection terminal wiring is configured so as to extend along a current path in the resistor body first, and...
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7282904 |
Device for measuring the intensity of a strong current passing through a wire
The device for measuring the intensity ( 1 ) of a strong current passing through a wire ( 1 ) comprises a magnetic sensor ( 2 ) in the form of a loop surrounding the wire ( 1 ), and a turn ( 3 ) of...
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7279885 |
Temperature compensated current sensor using reference magnetic field
A method is described to provide temperature compensation and self-calibration of a current sensor based on a plurality of magnetic field sensors positioned around a current carrying conductor. A...
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7274186 |
Temperature compensated and self-calibrated current sensor
A method is described to provide temperature compensation and reduction of drift due to aging for a current sensor based on a plurality of magnetic field sensors positioned around a current...
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7271580 |
Apparatus and method for programmable trip settings in a faulted circuit indicator
A fault indicator for indicating the occurrence of a fault in an electrical conductor is programmable, such as in the field, by placing a magnet in proximity to the housing of the fault indicator....
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7265531 |
Integrated current sensor
An integrated current sensor includes a magnetic field transducer such as a Hall effect sensor, a magnetic core, and an electrical conductor. The conductor includes features for receiving portions...
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7259546 |
Temperature compensating integrated anti-differential current sensing system
A system for current sensing includes a first Hall effect sensor and a second Hall effect sensor constructed to provide feedback indicating current flow through a conductor susceptible to external...
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7259545 |
Integrated sensor
An integrated sensor includes a magnetoresistance element electrically coupled to a device disposed on or integrated in a silicon substrate. A conductor is provided proximate to the...
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7248158 |
Automated meter reading power line communication system and method
An automated meter reading power line communications system is provided, which may include measuring the utility usage of a first customer premises to provide first utility usage data, storing the...
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7242177 |
Method and circuit arrangement for current measurement
A method with corresponding circuit arrangement is disclosed, whereby for evaluation of a measured signal arising as an analogue value with a potential greater than zero potential in a measuring...
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7239123 |
Multiplexed dual-purpose magnetoresistive sensor and method of measuring current and temperature
The present invention determines temperature and current from resistance measurements of a single magnetoresistive sensor. A dual-purpose sensor includes the magnetoresistive sensor having a single...
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7227348 |
Apparatus for measuring an a.c. current in a cable
An apparatus for measuring alternating current in a conductor comprises first and second coils a 1 x , d 1 x having substantially the same turns-area product and substantially parallel axes and...
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7221283 |
Circuit interrupter locator device
A system for identifying a selected electrical circuit of interest from a number of electrical circuits, by locating a circuit interrupter connected to interrupt the flow of electrical power from...
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7208963 |
Method and apparatus for measuring coil current
A method and apparatus is described according to various embodiments, for flowing current from one region of a coil to another region of the coil. The flowing induces—through flux linkage —a...
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7170295 |
Resistor arrangement, manufacturing method, and measurement circuit
The invention relates to a resistor arrangement, especially for current measurement in a vehicle electrical system, with two plate-shaped connection elements separated from each other and a...
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7164995 |
Differential termination and attenuator network for a measurement probe
A differential termination and attenuator network receives a differential input signal having a DC common mode voltage. The network circuit includes input termination resistors coupled in parallel...
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7164994 |
Differential termination attenuator network for a measurement probe having an internal termination voltage generator
A differential termination and attenuator network having an internal common mode termination voltage generator includes first and second termination resistors coupled in parallel with corresponding...
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7158012 |
Non-invasive powerline communications system
A non-invasive powerline communications system includes: means for generating communication signals at a first location for transmission on a powerline; means for reactively coupling the...
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7129693 |
Modular voltage sensor
A voltage sensor is described that consists of a plurality of identical series-connected sections, where each section is comprised of an arrangement of impedance elements. The sensor is optimized...
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7129692 |
Current detection equipment and semiconductor device
A current detection equipment comprises a first coil and a second coil connected in series with the first coil. The current detection equipment is capable of detecting a current flowing through an...
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