| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 03/25/2009 | CN101393237A Three phase on-line harmonic current real time monitoring system and working method thereof |
| 03/25/2009 | CN101391415A Dual-purpose voltage tester |
| 03/25/2009 | CN100472956C Voltage generation circuit |
| 03/25/2009 | CN100472575C Process device with quiescent current diagnostics |
| 03/24/2009 | US7508218 Apparatus and method for measuring loop insertion loss single-endedly |
| 03/19/2009 | US20090076750 Integrated circuit tester information processing system |
| 03/19/2009 | US20090072810 Voltage-drop measuring circuit, semiconductor device and system having the same, and associated methods |
| 03/19/2009 | DE102007045388A1 Messwandleranordnung mit einer Oberspannungswicklung sowie Verfahren zur Herstellung einer Messwandleranordnung mit einer Oberspannungswicklung Transducer arrangement with a high-voltage winding, as well as method of making a transducer assembly comprising a high-voltage winding |
| 03/19/2009 | DE102007044257A1 Verfahren zur tomographischen Rekonstruktion einer Messgröße aus einer der Messung zugänglichen Hilfsgröße A method for tomographic reconstruction of a measured quantity of a measuring accessible auxiliary quantity |
| 03/19/2009 | DE102007034072B3 Vorrichtung und Verfahren zum Ladungstransfer Apparatus and method for charge transfer |
| 03/18/2009 | EP2036099A1 Battery sensor unit and method for producing the battery sensor unit |
| 03/18/2009 | EP2035838A1 Circuit arrangement for recognizing an undervoltage of an energy source |
| 03/18/2009 | CN201210175Y Flip-latch used for voltage falling detection |
| 03/18/2009 | CN201210174Y Detection circuit used for main voltage pulse interference |
| 03/18/2009 | CN201210173Y Electroscope having high-voltage generator |
| 03/18/2009 | CN201210172Y Novel link bar |
| 03/18/2009 | CN201210171Y Multifunctional pointer type three phase voltmeter |
| 03/18/2009 | CN201208729Y Night viewing multifunctional screw driver |
| 03/18/2009 | CN101388550A Intelligent building electricity saving and distributing apparatus |
| 03/18/2009 | CN101388188A Source driver and noise suppression method thereof |
| 03/18/2009 | CN101388185A Source driver and voltage drop detector thereof |
| 03/18/2009 | CN101387679A Method for weighting dynamic voltage stability margin index |
| 03/18/2009 | CN101387663A Ultra low power consumption full-decompression measuring set and measurement method |
| 03/18/2009 | CN101387662A Watthour meter of three phase electronic electric energy meter and measurement method |
| 03/18/2009 | CN101387661A Single-phase electric energy meter capable of avoiding fraudulent use of electricity and measuring calculation method capable of avoiding fraudulent use of electricity |
| 03/18/2009 | CN101387659A Transformer harmonic current analyzer |
| 03/18/2009 | CN101387658A Detection circuit for auto detecting avalanche magnitude of voltage of avalanche photodiode and method |
| 03/18/2009 | CN100470751C Voltage measuring method, electrical inspection method, electrical inspection device, manufacturing method of semiconductor device and manufacturing method of element substrate |
| 03/17/2009 | US7506180 System and method for determining the power drawn from a switching power supply by counting the number of times a switching power supply switch is enabled |
| 03/17/2009 | US7504842 Probe holder for testing of a test device |
| 03/17/2009 | US7504817 Stud sensor |
| 03/12/2009 | WO2009032903A1 Chromatography apparatus and method |
| 03/12/2009 | WO2009032033A2 Method and apparatus for measureing current density in conductive materials |
| 03/12/2009 | WO2009030994A2 Control system |
| 03/12/2009 | WO2009030258A1 Protective device for protecting an electrotechnical unit and method for the operation thereof |
| 03/12/2009 | US20090066317 Transformer Meter and System for Using Same |
| 03/12/2009 | US20090066316 Electrokinetic Method for Determining the Electrostatic Charge State of a Porous Membrane During Filtering and the Use Thereof |
| 03/12/2009 | US20090066293 Voltage comparison circuit |
| 03/12/2009 | DE202008014686U1 Prüfgerät Laminator Tester Laminator |
| 03/11/2009 | EP2033016A1 Sensor and system for sensing an electron beam |
| 03/11/2009 | CN201207535Y Load line for hair curler and hair curler thereof |
| 03/11/2009 | CN201207057Y High-voltage electroscope without dead corner |
| 03/11/2009 | CN201207056Y Current test device |
| 03/11/2009 | CN201204972Y Contact net electrification voice presentation safe cap |
| 03/11/2009 | CN101382573A Induction voltage testing method |
| 03/11/2009 | CN101382568A Optical fiber type voltage measurement method and measuring set thereof |
| 03/11/2009 | CN101382567A Portable terminal machine for detecting battery voltage for vehicle and method for measuring battery voltage |
| 03/11/2009 | CN100468906C Over current detector of motor driving circuit |
| 03/11/2009 | CN100468067C On-line monitor of lighting arrester |
| 03/11/2009 | CN100468066C Device and method for the reading direct and/or alternating currents |
| 03/10/2009 | US7502701 PC-arrangement for visualisation, diagnosis and expert systems for monitoring, controlling and regulating high voltage supply units of electric filters |
| 03/10/2009 | CA2609629A1 Current switch with automatic calibration |
| 03/10/2009 | CA2609619A1 Status indicator |
| 03/10/2009 | CA2609611A1 Split core status indicator |
| 03/05/2009 | WO2009028763A1 Apparatus for measuring distortion power quality index and method of operating the apparatus |
| 03/05/2009 | WO2009027373A2 Measuring and/or switching device |
| 03/05/2009 | US20090063068 Numerical test data reporting in an image file and subsequent analysis |
| 03/05/2009 | US20090063066 System and method for pre-detection in a power over ethernet system |
| 03/05/2009 | US20090058470 Self-stop circuit using nonvolatile storage element charge amount as timer |
| 03/05/2009 | US20090058412 Integrated Current Sensor |
| 03/05/2009 | US20090058397 Apparatus for Verifying a Low Noise Block Output Voltage |
| 03/05/2009 | US20090058334 Current Detector Unit And Motor Control Device |
| 03/05/2009 | DE102008039149A1 Selbsttaktender Integrationsdifferenzstrom-Leseverstärker A self-timed integration differential current-sense amplifier |
| 03/05/2009 | DE102007041176A1 Mess- und/oder Schaltgerät Measuring and / or switching device |
| 03/04/2009 | EP2031752A2 Current detector unit and motor control device |
| 03/04/2009 | CN201204444Y Cyborg type MACSYM for power distribution network |
| 03/04/2009 | CN201204107Y Integrated intelligent prewarning type metal-oxide arrester |
| 03/04/2009 | CN201203647Y AC zero-cross detection circuit and electric force carrier adapter with the same |
| 03/04/2009 | CN201203646Y Low level detection circuit |
| 03/04/2009 | CN201203645Y Alarm device for preventing lever from being stepped on by mistake |
| 03/04/2009 | CN201203644Y Apparatus for measuring railroad switch representation voltage |
| 03/04/2009 | CN101379406A Circuit arrangement and method for detecting a power down situation of a voltage supply source |
| 03/04/2009 | CN101379405A Current sensor |
| 03/04/2009 | CN101378138A Method for improving battery use efficiency and equipment using battery to supply power |
| 03/04/2009 | CN101377540A Battery test system and method |
| 03/04/2009 | CN101377527A Optical fiber voltage measuring instrument |
| 03/04/2009 | CN101376983A Cathodic protection apparatus having sacrificial anode current output monitoring function and manufacturing method thereof |
| 03/04/2009 | CN101376982A Probe for monitoring sacrificial anode current output and manufacturing method thereof |
| 03/04/2009 | CN100465655C A method for monitoring a power output stage |
| 03/03/2009 | US7499824 Graphical user interface for easily configuring measurement applications |
| 03/03/2009 | US7498849 Sense amplifiers with high voltage swing |
| 03/03/2009 | US7498798 Current-to-voltage detection circuit |
| 03/03/2009 | US7498797 Locator with current-measuring capability |
| 03/03/2009 | US7498795 Electrostatic discharge device testing system and method |
| 02/28/2009 | CA2619506A1 Appliance having load monitoring system |
| 02/26/2009 | WO2009024692A1 Improved current sensor |
| 02/26/2009 | US20090055109 Device, method, and program for measuring signal, and recording medium |
| 02/26/2009 | CA2707102A1 Improved current sensor |
| 02/25/2009 | EP2028498A2 Systems and methods for an open circuit current limiter |
| 02/25/2009 | EP2027475A1 Method and device for demodulation of signals |
| 02/25/2009 | CN201199628Y Protecting equipment for electric force power distribution PLC control detection line |
| 02/25/2009 | CN201199383Y Line equipment for alarming and indicating current overload |
| 02/25/2009 | CN201199359Y Apparatus for monitoring state of mainboard power supply and sequence signal |
| 02/25/2009 | CN201199263Y Test device for load-matching monitoring instrument |
| 02/25/2009 | CN201199256Y Electrolytic capacitor high-frequency great current tester |
| 02/25/2009 | CN201199253Y Numeric display instrument for generator |
| 02/25/2009 | CN201199252Y On-line monitoring device for wireless multi-channel lightning arrestor |
| 02/25/2009 | CN201199251Y Current inductor |
| 02/25/2009 | CN201199250Y Neon tube |
| 02/25/2009 | CN101373197A Method and apparatus for on-line monitoring over voltage |