| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 07/09/2008 | CN201084590Y Key module |
| 07/09/2008 | CN201083816Y MOS tube analog collection system |
| 07/09/2008 | CN201083805Y Sensor and stray current monitoring system |
| 07/09/2008 | CN201083801Y Non-contact type extra-high voltage electricity tester |
| 07/09/2008 | CN201083800Y Transformer substation insulated live-wire detector based on dummy instrument technology |
| 07/09/2008 | CN201083792Y Multichannel photoelectric isolation voltage measurement circuit |
| 07/09/2008 | CN201083791Y Detector alarm circuit for real-time detection for battery voltage |
| 07/09/2008 | CN201083790Y Electric field induction -type high-voltage charge indicator |
| 07/09/2008 | CN201083789Y Device for detecting DC far-conveyed power line on current unbalancing |
| 07/09/2008 | CN201083788Y Intelligent monitor for thunder and lightning |
| 07/09/2008 | CN201083787Y Voltage detection device for high voltage frequency converter |
| 07/09/2008 | CN101216537A Single-electrode potential measurement method suitable for alkaline sealed cell and its device |
| 07/09/2008 | CN101216531A Analog-digital blended signal electronic circuit failure diagnosis method |
| 07/09/2008 | CN101216519A Distribution cable line live working measurement method |
| 07/09/2008 | CN101216518A Y wave-guide half-wave voltage test method |
| 07/09/2008 | CN101216509A Voltage measurement method based on three phase instantaneous point |
| 07/09/2008 | CN101216507A Optical fibre electric current sensor sensitive coil winding equipment |
| 07/09/2008 | CN101216506A Optical coupling isolation control interface circuit structure |
| 07/09/2008 | CN101216502A Wave plate temperature compensation system suitable for optical fibre current mutual inductor |
| 07/09/2008 | CN101216375A Test stand for detecting hub bearing ABS sensor dynamic signal |
| 07/09/2008 | CN100401078C Earth fault detection circuit for battery, and system without electric interruption |
| 07/09/2008 | CN100401076C Abnormal state management system for commercial image displaying device and method thereof |
| 07/09/2008 | CN100401075C Current monitoring system using bi-directional current sensor |
| 07/08/2008 | US7397233 Voltage measuring device |
| 07/03/2008 | WO2008079391A1 Resonant linearly polarized eddy current sensor |
| 07/03/2008 | WO2008079177A2 Industrial universal electrometer |
| 07/03/2008 | WO2008045903A3 Method, apparatus, and system for detecting hot socket deterioration in an electrical meter connection |
| 07/03/2008 | WO2007065040A3 Comparator circuit |
| 07/03/2008 | US20080157784 Detection of the supply state of a load supplied by a variable voltage |
| 07/03/2008 | DE112006002395T5 Prüfvorrichtung und Prüfverfahren Tester and test methods |
| 07/03/2008 | DE10258115B4 Breitbandiges Messmodul zur Strommessung an Einrichtungen der Leistungselektronik Broadband measurement module for current measurement at institutions of power electronics |
| 07/03/2008 | DE102007060845A1 Current sensor comprises conductor, through which current flows, where circular screen disc is arranged around direction of flow of current in conductor, and current sensor has magneto electronic conversion element |
| 07/03/2008 | DE102006062321A1 Vorrichtung zur Messung der Stromstärke in einem Leiter A device for measuring the current intensity in a conductor |
| 07/03/2008 | DE102006061923A1 Rogowski-Sensor und Verfahren zum Messen eines Stromes Rogowski sensor and method for measuring a current |
| 07/03/2008 | DE102006060114A1 Electric on-board supply system's component testing method, involves scanning value of supply current detected by current measurement using measuring resistor in central current line that is conveyed from one station to another |
| 07/03/2008 | DE102006058966A1 Detecting potential differences in e.g. fuel cell stacks, batteries or series electrolysis circuits, employs automatically-controlled measurement position selection switch |
| 07/02/2008 | EP1938113A1 A sampling module and a method of sampling one or more analogue characteristics of a power transmission system |
| 07/02/2008 | CN101213718A Automated precision alignment of data in utility monitoring system |
| 07/02/2008 | CN101213460A A peak or zero current comparator |
| 07/02/2008 | CN101211543A Liquid crystal device driving circuit and method |
| 07/02/2008 | CN101211497A Control circuit for checking loop state |
| 07/02/2008 | CN101210940A On-line DC measuring system and method |
| 07/02/2008 | CN100399660C Protective relay apparatus comprising photoelectriccurrent sensor |
| 07/01/2008 | US7394635 Current detection circuit and protection circuit |
| 07/01/2008 | US7394279 Method of measuring a surface voltage of an insulating layer |
| 07/01/2008 | US7394264 Device for non-dissipative measurement of the current in an inductor |
| 07/01/2008 | US7394239 Method and circuit arrangement for the self-testing of a reference voltage in electronic components |
| 06/26/2008 | WO2008074789A1 Semiconductor device for measuring ultra small electrical currents and small voltages |
| 06/26/2008 | US20080150516 Voltage Detecting Circuit |
| 06/26/2008 | DE102006060778A1 Durchgängigkeitsüberwachung eines Energieübertragungselementes Transmissivity monitoring of an energy transfer element |
| 06/26/2008 | DE102006059384A1 Electrical device for measuring current flowing through conductor, comprises housing with input and output electrical connections for connecting respective ends of conductor and current transformer, which is provided for measuring current |
| 06/26/2008 | DE102006058879A1 Messvorrichtung zur Messung eines elektrischen Stromes Measuring device for measuring an electric current |
| 06/25/2008 | EP1936391A1 Apparatus and method for improving the accuracy of instrument transformers |
| 06/25/2008 | EP1936390A1 Semiconductor device for measuring ultra small electrical currents and small voltages |
| 06/25/2008 | EP1936336A1 Current detection circuit, light receiving device using the same, and electronic device |
| 06/25/2008 | EP1719249A4 Non-quasistatic rectifier circuit |
| 06/25/2008 | EP1664811B1 Electronic circuit and method for determining the operativeness of an electronic circuit |
| 06/25/2008 | CN101207272A Turn space protection for reactor sequence component direction |
| 06/25/2008 | CN101206247A Method for measuring fuel cell internal current |
| 06/25/2008 | CN101206232A Method and device for monitoring plasma generator cathode life |
| 06/25/2008 | CN101204253A Voltage-measurable glove |
| 06/25/2008 | CN100397785C A-D transforming device, and calibration unit |
| 06/25/2008 | CN100397745C Battery-powered tool capable of detecting discharged battery pack |
| 06/24/2008 | US7392021 Apparatus, system, and method for measuring power delivered to a load |
| 06/19/2008 | WO2008073250A2 Estimation of real-time power system quanities using time-synchronized measurements |
| 06/19/2008 | WO2007062612A8 Monitoring unit for monitoring the load of an electric motor |
| 06/19/2008 | US20080147336 Measuring arrangement for registering chemical and/or physical, measured variables, as well as measuring device therefor |
| 06/19/2008 | US20080147335 Monitoring of distributed power harvesting systems using dc power sources |
| 06/19/2008 | US20080143346 Solenoid Actuator Motion Detection |
| 06/19/2008 | US20080143314 Static Electricity Examining Apparatus |
| 06/19/2008 | US20080143184 Method of on-chip current measurement and semiconductor ic |
| 06/19/2008 | DE102007040061A1 Wave detector circuit has two transistors where former transistor receives AC-signal and reference voltage at base and collector, and latter transistor display detected voltage |
| 06/19/2008 | DE102007009508B3 External vibrator for fixing to concrete formwork, has detection unit provided for inductive detection of power status in power supply line and display device to display optical signal corresponding to detected power status |
| 06/19/2008 | DE102006054940A1 Schaltfeldanlage mit Redundanz Panel system with redundancy |
| 06/18/2008 | EP1933156A1 Zero-phase current detecting apparatus |
| 06/18/2008 | CN201075123Y Device for measuring high potential current |
| 06/18/2008 | CN201075118Y Wafer type billisecond impulse current shunt |
| 06/18/2008 | CN101202520A Method of max power point tracing controlled by direct electrical current of photovoltaic power generation system |
| 06/18/2008 | CN101202433A Reliable load observe and control system |
| 06/18/2008 | CN101201388A Method of on-chip current measurement and semiconductor ic |
| 06/18/2008 | CN101201367A Intelligentized test system for electric coupler |
| 06/18/2008 | CN101201365A System and method for measuring and analyzing voltage frequency |
| 06/18/2008 | CN101201364A High pressure measurement device and antitheft electric method for high-low pressure electric quantity measurement contrast |
| 06/18/2008 | CN100395783C Automatic collector for cathode protection potential data at microconsumption station |
| 06/18/2008 | CN100395553C Method for detecting load current by using signal in work cycle of pulsewidth modulation controller |
| 06/18/2008 | CN100395530C Negative pressure sound inductor |
| 06/17/2008 | US7389190 Testing apparatus for testing a device under test and comparator circuit and calibration apparatus for the testing apparatus |
| 06/17/2008 | US7388409 Offset independent sense circuit and method |
| 06/17/2008 | US7388372 Electrical system with magnetoresistive sensors |
| 06/12/2008 | WO2008069867A2 Square cell having wide dynamic range and power detector implementing same |
| 06/12/2008 | WO2008067615A1 Method and apparatus for non-intrusive monitoring of materials transported through pipelines |
| 06/12/2008 | US20080136403 Apparatus for the detection of a current and method for operating such an apparatus |
| 06/12/2008 | US20080136402 Method for detecting abnormality of temperature sensor in machine tool |
| 06/12/2008 | US20080136399 Current sensor |
| 06/12/2008 | US20080135316 Method and Apparatus for Modeling Diffusion in an Electrochemical System |
| 06/12/2008 | US20080135315 Fast search algorithm for finding initial diffusion voltage in electro-chemical systems |
| 06/12/2008 | DE102006055315A1 Monitoring device for power line, has line section and another line section, where line sections are switched into series and have measuring instrument which generates two measuring signals |
| 06/11/2008 | EP1931030A1 Current preamplifier and associated current comparator |
| 06/11/2008 | EP1930736A2 Voltage measurement instrument and method having improved automatic mode operation |
| 06/11/2008 | EP1929602A1 Method and system for through fault detection in electrical devices |