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With coupling means (e.g., attenuator, shunt)

Subclass of:

324 - Electricity: measuring and testing

324760110 - MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
324127000 Transformer (e.g., split core admits conductor carrying unknown current) 55
324128000 Selective filter 1
20100201347VOLTAGE MEASURING DEVICE AND STORAGE DEVICE - According to one embodiment, a voltage measuring device that measures an input voltage signal includes a divider, a filter, an adder, and an analog-to-digital converter. The divider divides the input voltage signal into a first signal and a second signal. The filter filters the first signal and attenuates a direct current component of the first signal less than a predetermined frequency component of an alternating current component of the first signal. The adder adds an output signal of the filter to the second signal. The analog-to-digital converter converts an output signal of the adder into a digital signal. The divider adjusts the amplitude of at least one of the first signal and the second signal such that the level of a direct current component of the output signal of the adder is in the input range of the analog-to-digital converter.08-12-2010
Entries
DocumentTitleDate
20120176121CURRENT PASSAGE INDICATOR - A fault current passage indicator (07-12-2012
20100109649APPARATUS FOR DETERMINING AND/OR MONITORING A PROCESS VARIABLE - An apparatus for determining and/or monitoring at least one process variable. The apparatus includes: at least one energy input, via which the apparatus receives energy for operation of the apparatus. The invention includes features that: at least one measuring unit is provided, which measures energy applied to the energy input; and at least one control unit is provided, which, based on comparison of the measured energy with a desired value of the energy requirement, controls at least one unit of the apparatus.05-06-2010
20100109648Current sensing inductor and a circuit thereof - An inductor design having a detection winding which is magnetically coupled to the existing winding and its induction voltage is used to cancel that of the existing winding. Having the induction voltage cancelled, the voltage across the existing winding represents a resistive voltage drop of the existing winding current. The detection winding is furthermore built with a non-inductive portion having a significantly higher DC resistance in proportion to that of the existing winding. This resistance proportion is insensitive against temperature variations when both the existing and the detection windings are built with the same material and subjected to the same environment. A reference current is fed through the detection winding to produce a reference resistive voltage drop which is used to cancel the resistive voltage drop across the existing winding. When a precise cancellation occurs, the existing winding current is known to be in exact proportion to the reference current.05-06-2010
20090045801Temperature stable current sensor system - A current sensor system that uses a sensor resistor to sense current flow and in which the level of voltage drop across that resistor is used to control the current flow through another resistor, the input resistor, into a current integrator. The ratio of input resistor to sensor resistor resistance values determines the ratio of sense current to integrator input current level. By matching the temperature coefficients of the resistors the effects of temperature are reduced. The integrator output provides either directly or indirectly a voltage level, frequency, or duty cycle output signal to indicate the sensor resistor current level.02-19-2009
20130069632APPARATUS AND METHOD FOR IMPROVED CURRENT SHUNT SENSING - An apparatus and method for improved current shunt sensing in an electrical system, such as a renewable energy electrical system, is disclosed. A current shunt according to aspects of the present disclosure includes a conductive portion that is placed in series with an electrical system The current shunt includes a sensing element that is used to measure the voltage across the conductive portion of the current shunt. The sensing element has an increased width relative to the width of the conductive portion of the shunt. The increased width of the sensing element provides for improved current shunt sensing that results in more accurate voltage (and thus current) measurements across a wide range of frequencies.03-21-2013
20130057255INTEGRATED DEVICE SUSPENDED AT HIGH VOLTAGE POTENTIAL FOR POWER ENERGY METERING AND PROTECTION OF DISTRIBUTION NETWORK - An integrated device suspended at a high voltage potential for the metering and protection of a distribution network comprises a measurement current transformer (CT), a protective CT and a voltage sensor. The voltage signal is output from the voltage sensor to an electric energy metering module and first and second electric signal acquiring modules. The current signal acquired by the measurement CT is output to the electric energy metering module. The current signal acquired by the protective CT is output to the first and second electric signal acquiring modules. The electric energy metering module processes the current and voltage signals and sends the processed data to a comprehensive control module. The first and second electric signal acquiring modules send the voltage and current data to the comprehensive control module. The comprehensive control module comprehensively calculates the received data and sends the result to a low voltage terminal.03-07-2013
20130063129SENSOR DEVICES AND METHODS FOR USE IN SENSING CURRENT THROUGH A CONDUCTOR - Sensor devices and related methods disclosed. One example sensor device includes a substrate comprising a plurality of bobbins, the plurality of bobbins define an aperture structured to receive a conductor therein, a coil comprising a plurality of coil turns wound about each of the plurality of bobbins, a first shield extending between each of the plurality of bobbins and the plurality of coil turns; and a second shield positioned proximate to the plurality of coil turns, opposite the first shield such that the plurality of coil turns is between the first shield and the second shield.03-14-2013
20110043190ROGOWSKI COIL, MEDIUM VOLTAGE ELECTRICAL APPARATUS INCLUDING THE SAME, AND METHOD OF PROVIDING ELECTROSTATIC SHIELDING FOR A ROGOWSKI COIL - A Rogowski coil includes a core, a Rogowski coil winding disposed on the core, an insulator disposed on the Rogowski coil winding disposed on the core, and a conductive winding disposed on the insulator disposed on the Rogowski coil winding disposed on the core. The conductive winding includes an electrical connection structured to be grounded. When the conductive winding is grounded, the grounded conductive winding provides electrostatic shielding for the Rogowski coil winding of the Rogowski coil.02-24-2011
20120112737IC CURRENT MEASURING APPARATUS AND IC CURRENT MEASURING ADAPTER - 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.05-10-2012
20120032667CURRENT SENSOR STRUCTURE - 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.02-09-2012
20110298446CURRENT SENSOR, INVERTER CIRCUIT, AND SEMICONDUCTOR DEVICE HAVING THE SAME - 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.12-08-2011
20110291642POWER MEASUREMENT CIRCUIT - 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.12-01-2011
20110267038SHUNT SENSOR AND SHUNT SENSOR ASSEMBLY - 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.11-03-2011
20110169481TEST AND MEASUREMENT DEVICE WITH A PISTOL-GRIP HANDLE - 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.07-14-2011
20110062945DEVICE 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 with the first cable and associated with a measuring electronic card connected to a data transmission cable. The measuring shunt further includes a measuring portion of resistive alloy coupled to connection portions on either side of the measuring portion. The connection portions are integrally formed with the measuring portion, and the first cable is secured to at least one of the connection portions of the measuring shunt.03-17-2011
20090167292Current Measuring Apparatus - 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.07-02-2009
20090115402VOLTAGE DETECTING CIRCUIT AND SEMICONDUCTOR DEVICE INCLUDING THE SAME - A voltage detecting circuit detects a voltage between first and second wirings, and comprises at least first and second transistors connected in series between the first and second wirings, wherein a first reference voltage is supplied to a gate of the first transistor, a gate and a drain of the second transistor are short-circuited, and a detection signal is output from a connection point between a drain of the first transistor and a source of the second transistor.05-07-2009
20090284248METHOD AND APPARATUS FOR HIGH CURRENT MEASUREMENT - In order to extend the measurement range of a current sensor, a current divider is formed by a first conductor formed in a current sensor that is mounted on a printed circuit board and a second conductor on the printed circuit board that electrically shorts at least one input terminal of the current sensor to at least one output terminal of the current sensor. The input terminal of the current sensor supplies the current to be measured to the first conductor and the output terminal supplies the measured current back to the printed circuit board.11-19-2009
20110204878METHOD FOR DETERMINING THE TYPE OF CONNECTION OF AT LEAST TWO ELECTRICAL DEVICES AND SYSTEM COMPRISING SEVERAL ELECTRIC DEVICES - The invention relates to a method for determining the type of connection of at least two electric devices (08-25-2011
20080265872WIRING SUBSTRATE AND CURRENT DETECTION DEVICE - An object of the present invention is to provide a wiring substrate capable of accurately detecting a potential difference in a shunt resistor and a current to be detected without being influenced by soldering, and a current detection device. A land mounted with a rectangular surface at each end of a shunt resistor is configured by first and second lands each having a rectangular portion and being arranged at a predetermined interval with a central line as a center, and third and fourth lands each having an area smaller than those of the first and second lands and being arranged at one end of the first and second lands to be connected respectively to the first and second lands. A wiring pattern for detecting a potential difference between the both ends of the shunt resistor is configured by a first wiring pattern connected to the third land and pulled out from the third land towards the fourth land, a second wiring pattern connected to the fourth land and pulled out from the fourth land towards the third land, and third and fourth wiring patterns connected respectively to the first and second wiring patterns and pulled out into one direction.10-30-2008
20080265871CURRENT 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 maintain proper current without significantly increasing an amount of power dissipation attributable to the current measurement element or adding resistance to assist in current measurement. The apparatus and methods described herein are useful in superconducting circuits where it is necessary to monitor current carried by the superconducting elements while minimizing the effects of power dissipation attributable to the current measurement element.”10-30-2008
20110006754CURRENT MEASUREMENT APPARATUS WITH SHUNT RESISTOR AND HEAT SINK - A current measurement apparatus includes a shunt resistor (01-13-2011
20100271006START TEST ELECTRONIC DEVICE AND SYSTEM AND METHOD OF USE THEREOF - The present invention is a method and system for monitoring the continuous flow of power delivered by multiple DC Direct current operated starter motors used to start engine driven electrical generators. The method and system comprise the closing of a starter battery system and an associated starter control switch, causing the starter battery system to discharge through a shunt whereby current is fed into a starter motor. The shunt is optionally provided as a precision resistor with a pre-calibrated voltage drop in millivolts DC proportional to a current passing through it. The shunt directs current to a meter relay, which is calibrated by establishing two set points, or desired trigger ranges, for the meter relay. If the current falls outside a range established by the two set points, then a meter relay alarm output is activated; and, if the current remains within the range, then the meter relay alarm output is not activated. The meter relay alarm output is, optionally, a dry contact which activates a signal device.10-28-2010
20100148756CLAMP METER WITH SAFE TRIGGER MECHANISM - 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.06-17-2010
20100194382METHOD FOR DETERMINING ELECTRICAL POWER SIGNAL LEVELS IN A TRANSMISSION SYSTEM - A signal level detection method is provided, the method includes providing a feed line system that includes coaxial cable connectors connected coaxial cable sections. Each coaxial cable connector includes a connector body, a coupling circuit positioned within the connector body, an electrical signal power level detection circuit electrically connected to the coupling circuit and comprised by the connector body, and an output component comprised by the connector body. At least one coupling circuit senses an electrical signal flowing through at least one associated coaxial cable connector. At least one electrical signal power level detection circuit detects a plurality of associated power levels of the electrical signal flowing through at least one associated coaxial cable connector.08-05-2010
20100225305METER SOCKET CONNECTION METHODS AND SYSTEMS FOR LOCAL GENERATORS OR MONITORING CONNECTIONS - Systems and methods for faster, safer and lower cost means of interconnecting local generation or power monitoring systems to a residential or commercial electric power system so that the connection is made via a direct connection to the power meter socket on the consumer side of the meter. The breaker for the system is collocated with the interconnection. Further modern energy management system typically require measurement of an entire premise's power and energy load, requiring additional power measurement probes and communications wiring. Instead of being connected to a new, upgraded breaker in the main service panel on the consumer side of the meter which often requires extensive and time consuming work to do as well as additional potential complications, embodiments of the invention may allow for a quick interconnection by inserting an attachment underneath the existing standardized meter for simplified power connection, measurement and communications.09-09-2010
20100225304VOLTAGE-MEASURING CIRCUIT AND METHOD - 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.09-09-2010
20110175597SIGNAL TESTING APPARATUS FOR LOAD CONTROL SYSTEM - 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.07-21-2011
20130127446CURRENT MEASURING APPARATUS - The present invention discloses a current measuring apparatus and associated networking apparatus, the current measuring apparatus comprising: a consumer unit comprising at least one interrupting device operative to interrupt a mains electricity supply when an excess current flows, such as a fuse box, a mains current circuit in the mains electricity supply path; and a measurement circuit that is operative to measure a voltage drop across the mains current circuit.05-23-2013
20120194172Current Sensing Apparatus - A current sensing device (08-02-2012
20090115401System comprising an automotive fuse and an A/D converter - The invention relates to a system which comprises an automotive fuse and an A/D converter. Conventional systems comprising an automotive fuse and an A/D converter are designed such that a measured value is generated at the automotive fuse, which value is then amplified and passed on to the A/D converter via a long signal line. The novel space-saving system is characterized in that the A/D converter is located in close vicinity to the automotive fuse. The automotive fuse supplies the non-amplified, analog measured value for the input of the A/D converter. Signal transmission is carried out digitally via a bus system. It is especially advantageous if all components are housing in a common housing. Signal transmission is then carried out digitally via a bus system. The inventive system is suitable for use in data bus systems of vehicles.05-07-2009
20100134094 NOVEL CLAMP METER WITH ROTARY MECHANISM FOR CLAMP JAWS - The present invention provides a clamp meter with clamp jaws whose position is adjustable in different planes with respect to the plane of the main body of the clamp meter at various fixed angles, thereby helping the user to measure the current in the conductors which are disposed in tight physical spaces such as an electrical cabinet or electrical panel, or placed in awkward positions such as overhead locations. The present invention allows the user to operate the instrument and also read the display in all positions of the clamp jaws.06-03-2010
20090184704MTJ 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 magnets. Said detector may be used to measure electric currents without being affected by local temperature fluctuations and/or stray fields.07-23-2009
20110121820HIGH VOLTAGE SENSING CAPACITOR AND INDICATOR DEVICE - 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. The electrode spacing and configuration is structured to provide a deliberate amount of coupling between the two electrodes in the presence of an AC electric field. Because of rules governing Abstracts, this Abstract should not be used to construe the claims in this patent application.05-26-2011
20100013459CIRCUITS AND METHODS FOR HIGH-EFFICIENCY ON-CHIP POWER DETECTION - Power detector integrally formed within a printed transmission line to capacitively couple a portion of signal power propagating on the printed transmission line and a power detector circuit that receives coupled power output from the power detector to detect a power level of the signal power. The power detector is designed such that capacitance of the coupling capacitor is absorbed into a distributed capacitance of the transmission line to maintain continuity of a characteristic impedance of the transmission line.01-21-2010
20100264905ARRANGEMENT FOR THE POTENTIAL-FREE MEASUREMENT OF CURRENTS - The invention relates to an arrangement for the potential-free measurement of current flowing in two primary conductors (10-21-2010
20120007588CLAMP METER FOR MEASURING VOLTAGE AND CURRENT SIMULTANEOUSLY AND METHOD FOR THE SAME - 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.01-12-2012
20090278527PRECISION AC CURRENT MEASUREMENT SHUNTS - 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.11-12-2009
20090284249Sensor, Method and System of Monitoring Transmission Lines - An apparatus, method, and system for measuring the magnetic field produced by phase conductors in multi-phase power lines. The magnetic field measurements are used to determine the current load on the conductors. The magnetic fields are sensed by coils placed sufficiently proximate the lines to measure the voltage induced in the coils by the field without touching the lines. The x and y components of the magnetic fields are used to calculate the conductor sag, and then the sag data, along with the field strength data, can be used to calculate the current load on the line and the phase of the current. The sag calculations of this invention are independent of line voltage and line current measurements. The system applies a computerized fitter routine to measured and sampled voltages on the coils to accurately determine the values of parameters associated with the overhead phase conductors.11-19-2009
20110089932Systems and Methods for Monitoring Voltage - 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.04-21-2011
20110089931TEMPERATURE-COMPENSATED SHUNT CURRENT MEASUREMENT - 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.04-21-2011
20120249123MEASUREMENT DEVICE - A measurement device includes a first connector unit, a measurement wire, and a second connector unit. The first connector unit includes a first dummy connector and a wire part. The wire part includes an inserting portion. A number of insert holes is defined in the first connector. The inserting portion of the wire part is selectively inserted in one of the insert holes of the connector. The measurement wire is graduated. A first end of the measurement wire is connected to the first connector body, and a second end of the measurement wire is movably connected to the second connector unit, with the measurement wire stretched out straight between the first and second connector units.10-04-2012
20120133355VOLTAGE MEASUREMENT APPARATUS - 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.05-31-2012
20090058398CURRENT/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 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.03-05-2009
20120169324SIMPLIFIED JAW ASSEMBLY FOR A CLAMP METER - A current clamp meter includes a current meter body and a jaw assembly. The jaw assembly is configured so that the current clamp meter may be used to reach and readily single-out a desired wire from amongst adjacent wires.07-05-2012
20120074929Inductive Current Sensor - 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.03-29-2012
20100327851CONTACT MECHANISM, CARD DETECTING APPARATUS, AND CARD DETECTING METHOD - A contact mechanism includes a movable contact unit to be positionally changed in accordance with insertion of a detachable member; and a fixed contact pair to include a first fixed contact unit and a second fixed contact unit, the positionally changed movable contact unit coming into slidable contact with the first fixed contact unit and the second fixed contact unit to make the first fixed contact unit and the second fixed contact unit conductive through the movable contact unit.12-30-2010
20120319676MULTI-CONDUCTOR CABLE CURRENT AND VOLTAGE SENSORS - A detachable current sensor provides an isolated and convenient device to measure current passing through a cable such as an AC power cable or non-metallic (NM) sheathed cable. Information about the magnitude and or phases of the currents passing through and/or voltages on the conductors is obtained by measuring the magnetic field at multiple circumferential positions around the cable using multiple semiconductor magnetic field sensors. A processing subsystem coupled to the multiple semiconductor magnetic field sensors determines information about the currents flowing in the conductors of the cable, including the current magnitude(s), and/or the phases and number of phases present in the cable, which can form part of a power measurement system that is used for energy monitoring, and/or for control purposes.12-20-2012
20120319677DC Decoupled Current Measurement - A circuit arrangement for measuring a load current provided to a load via a first load terminal of a load transistor is disclosed. In accordance with one example of the invention, the circuit arrangement includes a sense transistor coupled to the load transistor to provide a sense current representing the load current at a first load terminal of the sense transistor. The first load terminals of the load and the sense transistors are at respective floating electric potentials. A floating sense circuit coupled between the load terminals of sense transistor and load transistor, at least in one mode of operation the sense circuit receives the sense current and provides a floating signal representing the sense current. A non-floating measurement circuit is coupled to the sense circuit via a DC decoupling capacitor for transferring the floating signal representing the sense current to the non-floating measurement circuit. The measurement circuit is configured to provide an output signal representing the floating signal and thus the sense current.12-20-2012
20120319678BEARING CURRENT SENSOR DEVICE HAVING AN ENERGY CONVERTER - A sensor device includes an exchangeable module shaped as a substantially annular disk and concentrically mounted at or on a shaft of an electric machine. The exchangeable module includes a detection device for detecting a bearing current of the electric machine and an energy converter device configured to convert mechanical energy of the shaft into electrical energy for transmission to the detection device.12-20-2012
20100231200Electrical Coil and Manufacruring Process Therefor - An electrical current sensor is disclosed having conducting coil portion and an insulating body portion, the conducting coil portion comprising a coil portion with one or more helical windings made of a wire conductor and encircling a central cavity. Adjacent windings are separated by a dielectrically effective gap, wherein the insulating body portion comprises a dielectric spacer comprising a helical gap maintaining protuberance configured for insertion in the central cavity of the windings such that the gap maintaining protuberance is at least partially inserted in the gap between windings.09-16-2010
20120091998CLAMP METER WITH DETACHABLE CLAMP AND CLAMP STORAGE AREA - 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.04-19-2012
20120326703CURRENT MEASUREMENT APPARATUS - A current measurement apparatus includes multiple GMR elements and a calculation unit. The multiple GMR elements each include a pinned magnetic layer having a pinned magnetization direction, and a free magnetic layer having a magnetization direction to be changed by an external magnetic field. The calculation unit obtains the magnitude of a current to be detected, from outputs of the multiple GMR elements. The multiple GMR elements are disposed in ring shape around a conductor through which the current to be detected flows, and are electrically connected so as to form a series variable resistor by using the multiple GMR elements. The magnetization directions of the pinned magnetic layers are pinned in the same direction when viewed from an extension direction of the conductor at each of the positions of the elements.12-27-2012
20130015841CONNECTION SYSTEM FOR SENSOR DEVICEAANM Caprio; MatthewAACI SeattleAAST WAAACO USAAGP Caprio; Matthew Seattle WA USAANM McMorrow; Gerald J.AACI RedmondAAST WAAACO USAAGP McMorrow; Gerald J. Redmond WA USAANM Clay; AndrewAACI EverettAAST WAAACO USAAGP Clay; Andrew Everett WA USAANM Ivanova; Ekaterina FilipovaAACI KirklandAAST WAAACO USAAGP Ivanova; Ekaterina Filipova Kirkland WA USAANM Valenzuela; AntonioAACI EverettAAST WAAACO USAAGP Valenzuela; Antonio Everett WA USAANM Beasley; VanessaAACI ClaytonAAST NCAACO USAAGP Beasley; Vanessa Clayton NC US - A system for connecting remote equipment to a sensor device having a connector coupled to at least two terminals located on different portions of the sensor device. The portions of the sensor device may be an anterior portion and a posterior portion with each having at least one terminal. In turn, the terminals are nested on top of one another and at least one terminal is electrically accessible through a window region of the other portion. Further, the terminals are alignable with each other and with a connector by alignment indicators, which may provide a visual alignment indication for the terminals as well as a mechanical alignment of the connector with the sensor device.01-17-2013
20130169269System and Method to Measure Neutral-To-Ground Voltage - A method and program for minimizing objectionable currents while still providing neutral-to-ground voltage measurements by controlling a switch to determine when the neutral-to-ground impedance is placed in an electrical circuit.07-04-2013
20110273163Solar monitor for solar device - 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.11-10-2011
20130099775CURRENT SENSOR - A current sensor includes a first support configured to include a cutout portion, a first magnetic detector element group configured to be provided in the first support, a second support configured to include a cutout portion, and a second magnetic detector element group configured to be provided in the second support. The cutout portion includes a supporting surface supporting a current line. In the current sensor, when the current line conducting therethrough a current to be measured is attached, the first support and the second support are displaced in the circumferential direction of the current line and fixed, and the current line is supported by supporting surfaces, in different positions in the axis line direction of the corresponding current line.04-25-2013
20100066351DEVICE 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 with the first cable and associated with a measuring electronic card connected to a data transmission cable. The measuring shunt further includes a measuring portion of resistive alloy coupled to connection portions on either side of the measuring portion. The connection portions are integrally formed with the measuring portion, and the first cable is secured to at least one of the connection portions of the measuring shunt.03-18-2010
20130127445TEST FIXTURE WITH LOAD - A test fixture with a load for measuring an output voltage of a connecting port with a voltmeter at full load is illustrated. The test fixture includes a main body, a plug comprising a first pin and a second pin for respectively contacting the two lines of the connecting port. A first contact connected to the first pin through a first wire, a second contact connected to the second pin through a second wire, and a load connected between the first wire and the second wire. The plug is connected to one end of the main body and capable of being inserted into the connecting port.05-23-2013
20110221424Wide Range Current Sensing - 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.09-15-2011
20130147464CLAMP METER WITH MULTIPOINT MEASUREMENT - A clamp meter with multipoint measurement includes a current-measuring unit, an analog-to-digital converting unit, and a measuring-position judgment unit. The current-measuring unit includes a plurality of current-measuring positions calibrated according to the measuring-position judgment unit. The current-measuring unit measures the current of the current-measuring position judged by the measuring-position judgment unit.06-13-2013
20120256617Device and Assembly for Measuring an Electric Current - The device for measuring an electric current is provided to measure currents flowing in a cable. It comprises means for securing a flexible Rogowski coil able to occupy an open position enabling engagement around the cable and a closed position designed to surround the cable. The device comprises actuating means designed to move said coil from one position to the other. The measuring assembly comprises at least one such measuring device and measurement and/or transmission electronics of the result of the measurements receiving data from the coil of the measuring device.10-11-2012
20100315065WIDEBAND HIGH IMPENDANCE BRIDGING MODULE - A bridge module provides connection between first and second conductors of a line under test and a test instrument adapted for use with the bridge module. The bridge module provides monitoring and measurement of DSL communication signals between the telephone company DSL terminal (DSLAM) and the subscriber home DSL equipment across a wide range of frequencies. The bridge module can be used at any point in the communications link and can be used while the link is active. The bridge module provides a clickless connection to the active DSL communications link to avoid interruption in DSL service.12-16-2010
20110291643MODULAR NANO AND MICROSCALE SENSORS - 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.12-01-2011
20110291641VOLTAGE DETECTION AND MEASUREMENT CIRCUIT - 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. The circuit also includes an optocoupler coupled to the first and second Zener diodes to receive the output waveforms from the first and second Zener diodes to detect the input AC voltage and a processing circuit configured to receive the output waveforms from the optocoupler and to determine a magnitude of the input AC voltage based upon the output waveforms12-01-2011
20130187635ELECTRICAL SENSOR FOR A TWO-WIRE POWER CABLE - The invention discloses an electrical sensor for a two-wire power cable. The sensor includes: a flexible substrate joined onto the power cable or the protective jacket thereon; an inductive coil formed on the flexible substrate; a pair of metal electrodes formed on the flexible substrate and at the opposite sides of the power cable, respectively; and a readout circuit formed on the flexible substrate, electrically connected to the inductive coil so as to measure the current in the power cable, and electrically connected to the metal electrodes so as to measure the voltage in the power cable.07-25-2013

Patent applications in class With coupling means (e.g., attenuator, shunt)

Patent applications in all subclasses With coupling means (e.g., attenuator, shunt)