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7622910 |
Method and apparatus for AC integrated current sensor
Integrated current sensors are used in AC electric power systems. An integrated current sensor according to one embodiment comprises: an inductor ( 101 ), wherein an AC current passes through the...
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7615989 |
Method and apparatus for DC integrated current sensor
Integrated current sensors are used in DC electric power systems. An integrated current sensor ( 200 B) according to one embodiment comprises: a DC inductor ( 111 B) including a resistive component...
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7615988 |
Wide range current sensing method and system
A current measurement technique is disclosed in which a family of transformer coils having the same number of turns and the same winding resistance may be associated an active circuit for...
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7598724 |
Flexible current transformer assembly
A current transformer assembly includes at least one Rogowski coil having a first closeable loop with an electrically conductive coil member and a first pair of terminals. An integrator unit has...
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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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7570045 |
Attachment device and method for fastening electrical cable monitoring instruments to electrical cables
The present invention is an attachment device and a method for fastening and removing an electrical cable monitoring instrument to an electrical cable. The attachment device comprises monitoring...
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7557563 |
Current sensor assembly
A sensor apparatus for measuring power parameters on a power conductor, such as a high voltage transmission line may include a corona structure, an electronics assembly and a conductor mountable...
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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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7541800 |
Methods and systems for detecting DC influence in a current sensor
Methods and systems for an electrical meter are provided. The meter includes a current sensor configured to be communicatively coupled to a conductor, and a processor communicatively coupled to the...
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7538541 |
Split Rogowski coil current measuring device and methods
A split Rogowski coil assembly having distinct coil loops formed on printed circuit boards that are not joined to one another.
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7532001 |
Q-boosting circuit
Provided is a Q-boosting circuit for improving a Q factor in a radio frequency (RF) integrated circuit of a semiconductor device using a transformer instead of an inductor. The Q-boosting circuit...
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7528594 |
Device for the reading of direct and/or alternating currents
The present invention is related to a device ( 1 ) for the detection of direct and/or alternating current to be used in the realization of highly sensitive amperometric measuring instruments or for...
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7525297 |
Current transformer with impedance compensation and associated methods
An impedance-compensated current transformer comprising a primary winding, a power source electrically coupled through the primary winding; a secondary winding magnetically coupled to the first...
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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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7483248 |
Method and apparatus for detecting current changes in integrated circuits
One embodiment of the present invention provides a system that detects changes in power-supply current within an integrated circuit (IC) chip. During operation, the system monitors an induced...
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7439726 |
Electrical measuring instrument having detachable current clamp probe
A current clamp meter having a current meter body and a detachable current clamp. The current meter body and the current clamp are configured so that the current clamp is detachable from the...
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7417419 |
Method and arrangement for connecting electrical components in an electricity meter
A current coil arrangement in an electricity meter includes first and second current coils. The first current coil has two current blades and a middle portion extending therebetween. The two...
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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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7362086 |
Integrated current sensor
A current sensor includes coupled inductors that generate an output current responsive to a detected current. The coupled inductor is implemented in an integrated circuit. An integrator circuit...
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7358716 |
Measuring method and measuring arrangement for measuring currents with a large dynamic range
A measuring method for measuring currents with a large dynamic range by means of a magnetic measuring module has the steps of switching into a high-current mode when a current threshold value is...
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7327134 |
Method and system for transformer control
A method to balance transformer flux among a plurality of transformers is disclosed. The plurality of transformers is connected to a plurality of converters, each transformer having an associated...
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7327133 |
Current measuring device using hall sensors
The present invention provides a current measuring device including a probe body having an elongated portion extending outward to a hook-shaped end wherein the hook-shaped end useful for isolating...
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7323860 |
Hall IC type current sensor of vehicle-mounted power converter
In a Hall IC type current sensor of a vehicle-mounted power converter which includes a bus bar which supplies electricity to a vehicle-mounted power converter, a Hall IC which detects a current...
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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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7315171 |
Electronic judging apparatus for working state of the equipment
The invention provides the electronic judging apparatus to detect the working state of the other electric equipment without modifying it inside. The common mode noise around the electric power...
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7310049 |
Status indicator
A status indicator indicates an operating state, including an electrical malfunction, of an electrical load that is located and controlled from locations remote from a monitoring location.
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7298957 |
Method for controlling sagging of a power transmission cable
A method is provided for controlling the sagging of a power transmission cable hang between two towers. The cable has a first supporting portion and a second conductive portion. The method includes...
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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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7288929 |
Inductive clamp for applying signal to buried utilities
An inductive clamp includes a pair of jaws configured to surround a conductor, and a pair of handles, each connected to a corresponding jaw. A pivotal connection is provided that allows the jaws to...
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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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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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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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7256573 |
Distributed active transformer power control techiques
A distributed active transformer on a semiconducting substrate is provided. The distributed active transformer includes an outer primary, a secondary disposed adjacent to the outer primary, and an...
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7253603 |
Current sensor arrangement
A current sensor is provided including a Rogowski coil in an assembly that is easily positioned about a conductor, e.g. without cutting the line or deenergizing the line. In one arrangement, the...
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7253602 |
Self-powered power bus sensor employing wireless communication
A sensor apparatus is for a power bus including a plurality of characteristics. The sensor apparatus includes a housing; one or more sensors each adapted to sense a characteristic of the power bus;...
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7239149 |
Search coil mount for facilitating inspection of a generator rotor in situ
A mount is for installing a probe, such as for example, a search coil, in a variety of locations and orientations within an electrical generator, without requiring the rotor of the generator to be...
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7235962 |
Inductor-based current sensing
A circuit for sensing a current in an inductor is described. Integrator circuitry is operable to generate a first signal representing an integration of a voltage across the inductor. Comparison...
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7230414 |
Current sensor that includes a pair of segments
A current sensor that includes a pair of segments. Each of the segments includes magnetically permeable cores that can be joined together. A winding is used to substantially encircle one of the cores.
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7230413 |
Flexible current sensor
A method and a current sensor for measuring a current in a conductor. The sensor comprises a non-magnetic, flexible core member having a first end and a second end. A locking head having a channel...
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7218092 |
Magnetic bridge type current sensor, magnetic bridge type current detecting method, and magnetic bridge for use in that sensor and detecting method
A current sensor and a current detecting method in which a sensitivity in at least 100 μA region and a dynamic range of 80 dB are achieved through a simple structure. The current sensor comprises...
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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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7180282 |
Apparatus for metering at least one type of electrical power over a predetermined range of service voltages
Methods and apparatus for supplying power for use in metering electrical energy over a wide range of voltages with a single meter are disclosed. The wide ranging meter includes a processing unit...
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7176698 |
Voltage sensing device and associated method
A transformer circuit is disclosed that minimizes the temperature dependence of an output voltage. A first embodiment of the present invention includes a primary winding coupled to receive a...
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7176673 |
Direct current detection circuit
A direct current detection circuit has a zero-phase current transformer with source lines inserted therethrough for detecting current differences among them and generates a comparison voltage value...
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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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7145322 |
Self-powered power bus sensor employing wireless communication
A sensor apparatus for a power bus including a current and a temperature includes a housing and one or more sensors. Each of the sensors is adapted to sense one of the current or the temperature of...
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