Patents
Sitemap › G01 - Measuring; Testing › G01R - Measuring electric variables; Measuring magnetic variables › G01R 15 - Details of measuring arrangements of the types provided for in groups ,  or
Patents for G01R 15 - Details of measuring arrangements of the types provided for in groups ,  or (13,411)
09/2003
09/03/2003EP1340092A2 Current sensors
09/03/2003CN2570798Y Photoelectric sampler for measuring of electric energy meter
09/03/2003CN1439882A Electromagnetic field sensors
09/02/2003US6614356 Digital meter for use of current and voltage
09/02/2003US6614218 Current measuring device
09/02/2003US6614211 Non-contact detector for sensing a periodically varying magnetic field
08/2003
08/28/2003WO2003071290A1 Production method for a sensor head of optical current sensors
08/28/2003WO2002095429A3 Electrical component measuring instrument
08/28/2003US20030160603 Measuring current through an electrical conductor
08/28/2003US20030160601 Compensation current sensor
08/27/2003CN2569308Y Gas insulation electronic type capacitive voltage mutual inductor
08/27/2003CN2569153Y Digital multimeter with anti-misoperation function
08/27/2003CN1119663C Analogue signal processor for magneto-optical current transoformer
08/26/2003US6611337 Interferometer coupler using multiple input ports for improved stability
08/26/2003US6611137 Hall effect current sensor system packaging
08/26/2003US6611136 Device for determining the primary current of a current transformer comprising saturation correction means
08/21/2003WO2003069690A2 Magnetic field sensor
08/21/2003US20030155905 Device, amperemeter and motor vehicle
08/21/2003CA2476243A1 Magnetic field sensor
08/19/2003US6608741 Two winding resonating arc fault sensor which boosts arc fault signals while rejecting arc mimicking noise
08/19/2003CA2182959C Holder for annealing fiber optic coils
08/14/2003US20030151482 Wide ratio autotransformer-type current ranging
08/14/2003US20030151412 Partial discharge detection test link, partial discharge detection system and methods for detecting partial discharge on a power cable
08/14/2003US20030151406 Magnetic field sensor
08/13/2003EP0878087A4 Non-invasive powerline communications system
08/13/2003CN2566275Y All intelligent digital multimeter
08/13/2003CN1435855A Mutual inductance conducting device
08/12/2003US6605936 Current detecting apparatus and current detecting method
08/07/2003WO2003065533A1 Method for detecting saturation in a current transformer
08/07/2003WO2003065057A1 Signal processing circuit for an optical sensor
08/07/2003US20030146815 Capacitive voltage transformer
08/07/2003US20030146748 Sensor for optically measuring magnetic fields
08/07/2003US20030146744 Device, ammeter and motor vehicle
08/07/2003CA2474052A1 Method for detecting saturation in a current transformer
08/06/2003CN1434302A IC tester using optical driving type driver and optical output voltage sensor
07/2003
07/31/2003WO2003016816A3 Current sensor
07/31/2003WO2002069354A3 Current-responsive resistive component
07/31/2003WO2002056045A3 Device for sensing a magnetic field, a magnetic field meter and an ammeter
07/30/2003CN2563583Y High voltage current and voltage sensor
07/30/2003CN2563582Y Voltage sensor for AC current monitoring
07/24/2003US20030137388 Printed circuit board-based current sensor
07/23/2003EP1328818A2 Arrangement for potential-free measurement of high currents
07/23/2003CN2562191Y 罗氏线圈电流传感器 Rogowski coil current sensor
07/23/2003CN1431519A Transformer for gas insulated electrical appts.
07/22/2003CA2045891C Oligonucleotide analogs with terminal 3'-3' or 5'-5' internucleotide linkages
07/17/2003US20030133657 Magneto-optical sensing employing phase-shifted transmission bragg gratings
07/15/2003US6594020 Method for controlling fiber optic sensor scale factor using amplitude modulation
07/15/2003CA2183243C Faraday-effect sensing coil with stable birefringence
07/10/2003WO2003056347A1 Current sensor
07/10/2003US20030128133 Systems and methods for detecting events in a power distribution system
07/10/2003US20030128089 Transformer for gas insulated electric apparatus
07/10/2003US20030128035 Fault locator and selectivity sensor
07/09/2003EP1326080A2 Voltage sensor for gas insulated electric apparatus
07/09/2003EP1325394A1 Wide ratio autotransformer-type current ranging
07/09/2003EP1171776A4 Circuit with improved dynamic response for measuring current in pulse width modulated amplifiers
07/09/2003CN1428609A Broad-band passive electro-optic transient electromagnetic field measuring system
07/08/2003US6590380 Method and apparatus for compensation of current transformer error
07/08/2003US6590378 Real time parameter monitoring apparatus for high voltage chamber in semiconductor wafer processing system
07/08/2003US6589301 Emulsified fuel of water in organic compound(s); continuous phase is organic; contains less than 20% by volume of water; at least one additive for forming the emulsion; surfactant, homogenizing; storage stable
07/03/2003WO2003054605A1 Magneto-optical sensing employing phase-shifted transmission bragg gratings
07/02/2003EP1324058A2 Range recognizer employing a single range internally partitioned by monotonically increasing boundary values
07/02/2003EP1324054A2 Device for measuring the intensity of a magnetic field, magnetic field sensor and current intensity measuring instrument
07/02/2003EP1322968A2 Transformer current sensor
07/02/2003EP0883815B1 Apparatus for measuring a.c. current in a cable
07/02/2003CN1427264A Electric current detecting method
07/02/2003CN1113246C Capacitive transformer in metal all-closed gas insulating high voltage system
07/01/2003US6586950 Volume charge density measuring system
07/01/2003US6586923 Non-contact type current measuring instrument
06/2003
06/26/2003US20030117290 Digital meter for use of current and voltage
06/26/2003US20030117126 Optical electric field or voltage sensing system
06/26/2003US20030117125 Optical electric field or voltage sensing system
06/25/2003CN2558055Y Capacitance type voltage inductor
06/25/2003CN2557953Y Pointer type multimeter with cold light no-reflection indication circuit
06/24/2003US6583613 Device and method for measuring an electric current
06/19/2003US20030112000 Current measurement device
06/18/2003EP1319188A1 Modular, integrated powerline monitor for non-high voltage applications
06/18/2003CN2556651Y Automatic range digital AC/DC pincerlike multimeter
06/17/2003US6580276 Tap switch for frequency response and partial discharge measurement
06/17/2003US6580183 Electric circuit shielding
06/11/2003EP1317673A1 Analytical circuit for a current sensor working on the compensation principle, in particular for the measurement of direct and alternating currents and method for operation of said current sensor
06/10/2003US6577287 Dual variable color display device
06/05/2003WO2003046584A1 Current sensor
06/04/2003CN2554634Y Multimeter with indicating lamp
06/03/2003US6573723 Current measuring apparatus for battery
06/03/2003US6573699 Device for measuring electric current by use of electro-optical crystal
05/2003
05/30/2003WO2003044544A1 Sensor for optically measuring magnetic field
05/30/2003WO2003044541A1 Method and apparatus for determining a current in a conductor
05/30/2003CA2366640A1 Electrical monitoring system
05/29/2003US20030098698 System and method for voltage divider having a guard structure
05/29/2003US20030098683 Apparatus and method for the measurement and monitoring of electrical power generation and transmission
05/28/2003EP1314993A2 Device for measuring a magnetic field and measuring a current
05/28/2003EP1314044A2 Active power monitoring using externally located current sensors
05/28/2003CN1420988A Sensor for measuring direct current and measuring method
05/28/2003CN1109896C Method and device for measuring current by applying voltage
05/27/2003US6570385 Handheld tester for starting/charging systems
05/27/2003US6570380 Non-linear hall IC
05/27/2003US6570373 Current sensor programmable through connector
05/22/2003WO2003042708A2 Optic fiber current sensor, comprising several sensing heads
05/22/2003CA2515409A1 Fiberoptic current sensor having a plurality of sensor heads
05/21/2003EP1311868A1 Circuit arrangement for monitoring the state of charge of an accumulator
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