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WO/2012/056296 |
An improved current transformer apparatus (4) includes a current transformer (8) upon which are stored a number of calibration values which can be used when connecting the current transformer to a metering device. An improved method of e...
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WO/2012/055358 |
A standard capacitance box output device comprises a changeover switch (3) and precision capacitors. The changeover switch (3) is placed in a shielding box (1). The shielding box (1) has an input end (11) and an output end (10). The inpu...
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WO/2012/042552 |
The method according to the present invention is aimed at determining the generalized scattering matrix of waveguide device (120) by means of a vector network analyzer (111) featuring hollow metallic pipe waveguide -ports (112,115) corre...
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WO/2012/038161 |
The invention describes a method for checking the proper method of operation of a current sensor (26, 28) which is designed to measure a battery current. During a precharge phase (32) which begins at a time (34) at which at least one ele...
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WO/2012/034803 |
The invention relates to a calibration unit (1) for a measuring device for connecting to a coaxial plug connection. The calibration unit (1) comprises a housing (2) and an inner conductor (15), wherein the inner conductor (15) is centere...
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WO/2012/034528 |
A method for calculating a primary time constant of a power grid. It comprises the steps of: establishing an electromechanical transient model of the power grid using the widely used power system analysis software package (PSASP) accordi...
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WO/2012/036353 |
This invention relates to a calibration method of modulation power for DVB-H test apparatus for reducing the calibration time for the power loss in the RF cable to half through calibration using the expected power loss of the modulated w...
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WO/2012/032428 |
A method for monitoring a rechargeable battery (1 ) with multiple cells (2, 2a..2n) is described, as well as a cell monitoring unit (3, 3a..3n) for such, in which in a normal mode (MN) a measurement (UCa, UCb) of a parameter of a cell (2...
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WO/2012/025320 |
The invention relates to a calibrating device for a network analyser having a plurality of ports, comprising a calibration circuit (2) which is connected via a terminal (31, 32) to one of the plurality of ports of the network analyser, r...
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WO/2012/017927 |
A calibration device (20A) for performing high precision calibration on an array antenna mounted in a satellite or the like, so that each system of the array antenna corresponds to environmental changes, said device comprising: a calibra...
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WO/2012/002617 |
The present invention relates to a power quality measuring device and method. The power quality measuring device includes: a detection unit obtaining a voltage waveform signal and a current waveform signal at a time interval set in a pow...
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WO/2011/157047 |
A capacitive sensor calibration system for measuring fast transient over-voltages is provided. The system includes: a high voltage steep pulse generator (201), a conical transmission tube (202), a capacitive sensor (203), a resistive vol...
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WO/2011/158856 |
Provided is an error cause determination method for a three-axis magnetic sensor comprising three magnetic elements for respectively detecting magnetic fields in the X-axis, Y-axis, and Z-axis directions. On the basis of output values fr...
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WO/2011/157470 |
The invention relates to a circuit arrangement for determining a voltage fluctuation of conductor potentials in an unearthed electrical network, wherein the network comprises a DC voltage intermediate circuit (6), an n-phase network (1) ...
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WO/2011/153718 |
A direct- current (DC) electric energy meter and a method for measuring DC electric energy are provided. The DC electric energy meter includes at least: a test module, for sampling voltages and currents, obtaining voltage signals and cur...
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WO/2011/131581 |
A method and an arrangement for determining values of impedance parameters related to a transformer configuration comprising three single pole voltage transformers (11, 12, 13) each having at least a primary winding (21, 22, 23), a secon...
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WO/2011/122592 |
Provided is a power storage unit wherein recalibration is facilitated and it is possible to supply power even when recalibration is being performed. Also provided are a method for correcting the capacity value of a storage battery, and a...
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WO/2011/112149 |
This invention provides an energy efficient way to test large size alternator by using a small amount of electricity. This eliminates the need to connect large size electric motors directly to the Mains, which can be complicated and expe...
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WO/2011/079752 |
A method, a device and a system for detecting a medical equipment are provided. The method includes: a detection device sends operational parameters to an equipment to be detected; the detection device acquires detection parameters from ...
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WO/2011/069825 |
The invention relates to a method for calibrating a voltage measurement, in particular for measuring a terminal voltage of a driving circuit (3) for an electrical machine (2), comprising the following steps: switching the driving circuit...
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WO/2011/069558 |
A fiber-optic current sensor comprises a measurinq unit (1) including a light source (3) and a light detector (7) as well as a sensing head (2) including a sensing fiber (11) wound around a conductor (12) and a retarder (10) connected to...
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WO/2011/067988 |
Disclosed is a system provided with a power detection means for measuring power consumption in an electric device, and an information communication means for transmitting measured values of the power detection means. The information comm...
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WO/2011/060820 |
The invention relates to a method for error-compensated current measurement of an electrical accumulator (110), comprising the following steps: providing a time-window-related estimated charge (Qr), which is determined by a model-based e...
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WO/2011/056875 |
A multi-dimensional sensor, a magnetometer or accelerometer, is calibrated based on the raw data provided by the sensor. Raw data is collected and may be used to generate ellipse or ellipsoid parameters, for a two-dimensional or three-di...
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WO/2011/033489 |
A stimulating medical device, comprising a plurality of electrodes, and a current source and a current sink connected to each one of the electrodes. The medical device also comprises a calibration arrangement configured to compare the cu...
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WO/2011/033489 |
A stimulating medical device, comprising a plurality of electrodes, and a current source and a current sink connected to each one of the electrodes. The medical device also comprises a calibration arrangement configured to compare the cu...
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WO/2011/025812 |
An apparatus and method for determining characterizing attributes of an actuator is provided. An actuator may be moved to a maximum capacitance position. At the maximum capacitance position, an initial measurement of the actuator capacit...
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WO/2011/001667 |
Provided is a magnetic sensor the sensitivity of which can be adjusted on a wafer, and which has excellent mass productivity with production characteristics that vary very little. The magnetic sensor is equipped with a magnetism sensing ...
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WO/2011/000101 |
Described herein are a channel, system and method for monitoring voltages. Typically, the system includes multiple channels, each for sampling one of the voltages. The channels are physically and electrically coupled to a back end board ...
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WO/2010/138966 |
A testing procedure may determine whether a monolithic voltage reference device meets a temperature drift specification. A first non-room temperature output voltage of the monolithic voltage reference device may be measured while the mon...
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WO/2010/125793 |
Provided is a testing apparatus which tests a device to be tested. The testing apparatus is provided with a programming unit, which programs a circuit for a programmable circuit device provided with a programmable circuit, and a testing ...
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WO/2010/104532 |
Described herein is a sensor assembly that can be calibrated after manufacture and a method for calibrating that assembly. The assembly comprises a sense element, microprocessor and a protection circuit. The assembly can use pins on the ...
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WO/2010/097496 |
A portable and autonomous device (1) is described herein that allows measurements to be made in electricity distribution networks (F, N) in order to verify the proper functioning thereof and the absence of errors and/or shunts in the net...
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WO/2010/086971 |
Disclosed is a test device comprising a signal output section for outputting a test signal, a signal acquiring section for acquiring a device signal outputted by a device to be tested, and an adjusting section for adjusting the signal ou...
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WO/2010/056431 |
A device and method for dynamically determining an impedance of a network is disclosed. The device includes at least a processing system for measuring a network voltage and network current when said network is determined to be in a first...
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WO/2010/047275 |
A semiconductor test system and a relay driving test method therefor, capable of automatically and continuously testing a plurality of relays mounted in a probe card without making contact with a needle tip. The probe card comprises a su...
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WO/2010/045965 |
The present invention relates to a device for compensating gain errors of current sensors used in a three-phase inverter (3). The inverter comprises a plurality of switches (10a-b,11a-b,12a-b) configured to switch the current in the thre...
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WO/2010/047275 |
Provided are a semiconductor test system and a relay driving test method therefor, which makes it possible to automatically and continuously perform a test, without contacting a needle tip, for a plurality of relays mounted in a probe ca...
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WO/2010/043460 |
The invention relates to a method and to a device for compensating for the offset of a rotor position sensor of an electrical machine. The intersecting points of the phase voltage signals of the electrical machine are ascertained using c...
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WO/2010/043309 |
The invention relates to a calibration substrate (100) having at least one calibration standard (12, 14, 16; 102, 104, 108) comprising at least two electrical connection points, each for one measurement gate (38, 42) of a vector network ...
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WO/2010/023924 |
Disclosed is a circuit board used to measure skew between output pins in a testing device that applies a test signal that includes a first signal and a second signal to a device under test and tests the device under test. The circuit boa...
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WO/2010/007770 |
A PE board (10) is provided for the pins of a DUT. A plurality of I/O pins (Pio) are connected to the corresponding pins of the DUT via cables. One end of each of a plurality of first switches (K1) is connected to a corresponding I/O pin...
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WO/2009/156825 |
The invention provides a method of diagnosing a malfunction in an abnormal voltage detecting apparatus, which includes breaking an electrical connection between a secondary battery (100) and an abnormal voltage detecting apparatus (40, 3...
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WO/2009/156982 |
A measurement device is presented being configured to be connectable to an analyzer unit (comprising a network analyzer) via at least one RF port connection. The measurement device comprises at least one measuring unit and at least one c...
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WO/2009/156982 |
A measurement device is presented being configured to be connectable to an analyzer unit (comprising a network analyzer) via at least one RF port connection. The measurement device comprises at least one measuring unit and at least one c...
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WO/2009/151648 |
The tolerance of Short-Open-Load (SOL) and Short-Open-Load-Reflect (SOLR) VNA calibration for variability in probe position is improved by using load and short calibration structures having impedance elements with a length at least two t...
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WO/2009/146547 |
Methods and apparatus for testing electrical storage batteries monitor magnetic susceptibility of components of the storage batteries. In some embodiments, magnetic susceptibility of a plate in a lead-acid battery is determined to provid...
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WO/2009/147199 |
The invention relates to a method of calibrating a test platform (5) for microwave modules (1). According to the invention, the Thru, Reflect and One standard units are replaced by microwave standard modules fulfilling similar functions,...
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WO/2009/132770 |
The invention relates to a method for calibrating at least one measuring appliance, especially a measuring appliance for determining properties of material samples, especially properties of biological material samples, said method compri...
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WO/2009/132437 |
An apparatus and method is disclosed for improving the accuracy of measurements taken with a capacitance-type sensor. In addition to the sensor the apparatus comprises a measurement circuit and a microprocessor. One of the sensor or a ca...
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