| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 08/03/2011 | CN102141583A LED current detection circuit |
| 08/03/2011 | CN102141582A 状况检测装置 Condition detection device |
| 08/03/2011 | CN102141416A Dynamic environment monitor system |
| 08/03/2011 | CN101566646B Method and apparatus for detecting an insufficient phase current in a permanent magnet synchronous motor |
| 08/03/2011 | CN101545945B Method for testing leakage current of MOS device |
| 08/03/2011 | CN101393263B Anti mirror processing method of distance detecting induction system |
| 08/03/2011 | CN101187681B Signalling device, and control method, for automatisms |
| 08/02/2011 | US7991568 Digital multimeter with automatic measurement selection function |
| 08/02/2011 | US7990151 Tri-pod buried locator system |
| 08/02/2011 | US7990132 Current sensor including an integrated circuit die including a first and second coil |
| 07/28/2011 | US20110185212 Data processing system having brown-out detection circuit |
| 07/28/2011 | US20110184678 Automated systems and methods for characterizing light-emitting devices |
| 07/28/2011 | US20110184675 Isolated current sensor with codec |
| 07/28/2011 | US20110182398 Motor driving device having power failure detection function |
| 07/28/2011 | US20110181271 Peaking circuit, peaking circuit control method, waveform measurement apparatus, and information processing apparatus |
| 07/28/2011 | US20110181268 System and Method for Detecting the Presence of an Unsafe Line Condition in a Disconnected Power Meter |
| 07/28/2011 | US20110181267 Test analyzer |
| 07/28/2011 | DE19817671B4 Vorrichtung und Verfahren zur Manipulation elektrochemischer Vorgänge an Elektroden mittels eines überlagerten elektrischen Feldes Apparatus and method for manipulation of electrochemical processes at the electrode by means of a superimposed electric field |
| 07/28/2011 | DE10297753B4 Unterspannungs-Detektionsschaltung Under-voltage detection circuit |
| 07/28/2011 | DE102011002812A1 Method for determining e.g. interruption of main voltage, involves determining start time or end-time of event based on integral surface of absolute values of difference curve of normal waveform and virtual waveform |
| 07/28/2011 | DE102010005666A1 Batteriemanagementvorrichtung Battery management device |
| 07/28/2011 | DE102010001181A1 Verfahren und Vorrichtung zur Strommessung in einem mehrphasigen Stromnetz Method and apparatus for current measurement in a polyphase power network |
| 07/27/2011 | EP2348326A2 Current sensor unit and method for signal and/or data transfer |
| 07/27/2011 | EP2347271A2 Current sensor having field screening arrangement including electrical conductors sandwiching magnetic permeability layer |
| 07/27/2011 | EP1844340B1 Method and device for determining the characteristics of the voltage of an electrical installation |
| 07/27/2011 | EP1257836B1 Electric arc monitoring systems |
| 07/27/2011 | EP1040728B1 Peak to peak signal detector for audio system |
| 07/27/2011 | CN201910577U Lightning rod capable of recording lightning current value and automatically transmitting current value |
| 07/27/2011 | CN201909822U Active voltage negative increase tester for testing charger |
| 07/27/2011 | CN201909810U Optical fiber temperature compensator for electronic current transformer |
| 07/27/2011 | CN201909809U Measuring instrument for 25-Hz phase-sensitive track circuit |
| 07/27/2011 | CN201909808U 1000-kv extra-high voltage electrified display device |
| 07/27/2011 | CN201909807U On-line direct-current measuring device for transformer neutral point |
| 07/27/2011 | CN201909806U Voltage sampling circuit |
| 07/27/2011 | CN1987490B Method and device for detecting arcs |
| 07/27/2011 | CN1948974B Semiconductor integrated circuit device |
| 07/27/2011 | CN102138078A Arrangement for measuring at least one value of a voltage applied to an electronic component |
| 07/27/2011 | CN102135562A Three-phase alternating-current detecting method and detecting device |
| 07/27/2011 | CN102135561A Measuring device and method for zero-sequence current of non-effectively neutral grounded system |
| 07/27/2011 | CN102135560A Disturbance identification method used during intrusion of lightning waves in transformer substation |
| 07/27/2011 | CN102135559A Low-voltage detection warning method and device |
| 07/27/2011 | CN102135558A Acquisition and hierarchical identification system of overvoltage data and hierarchical pattern identification method of overvoltage types |
| 07/27/2011 | CN102135557A Non-delay sampling circuit for three-phase alternating-current speed-measuring motor |
| 07/27/2011 | CN102135556A Detection circuit and synchronous rectification circuit |
| 07/27/2011 | CN102135555A Series arcing fault identifying method for low-voltage system |
| 07/27/2011 | CN101726651B Lightning stroke display device for high-tension cable strike-preventing lightning conductor |
| 07/27/2011 | CN101718812B Measurement circuit of direct current |
| 07/27/2011 | CN101650386B Method and system for judging zero shift of short circuit current of extra-high voltage alternating-current system |
| 07/27/2011 | CN101639497B Static estimating method of maximum overturning electric current in distributed sleep tube power gate control circuit |
| 07/27/2011 | CN101567493B Assembled structure with separable electrical connector component |
| 07/27/2011 | CN101566645B Detection circuit for power supply voltage pulse interference |
| 07/27/2011 | CN101515006B Method for measuring nonlinear susceptibility of materials |
| 07/27/2011 | CN101514999B Electric power measurement multifunctional instrument system and method for measurement |
| 07/27/2011 | CN101266267B Method for confirming input voltage value output to comparator and light drive circuit |
| 07/27/2011 | CN101153888B Testing method for luminous parallel path of flexible printing circuit board |
| 07/26/2011 | US7987298 System and method for detecting the status of a universal serial bus port of a mobile phone |
| 07/26/2011 | CA2607922C Self-test probe design and method for non-contact voltage detectors |
| 07/26/2011 | CA2534598C A low threshold current switch |
| 07/21/2011 | WO2011066554A3 I-v measurement system for photovoltaic modules |
| 07/21/2011 | US20110178749 Adaptive Triggers Method for MIDI Signal Period Measuring |
| 07/21/2011 | US20110178743 Early detection of minimum cell voltage degradation of a fuel cell stack |
| 07/21/2011 | US20110178742 Detection method for membrane and electrode failures in fuel cell stacks |
| 07/21/2011 | US20110175596 Current measuring apparatus for power supply |
| 07/21/2011 | DE102010054596A1 Thermoelementmessung in einem Stromführungsweg Thermocouple measurement in a Stromführungsweg |
| 07/21/2011 | DE102010051629A1 Verfahren und Vorrichtung zur Überwachung des Gesundheitszustands von elektrischen Verbindungen zwischen Batterie und Generator Method and apparatus for monitoring the health status of electrical connections between the battery and generator |
| 07/20/2011 | EP2345144A2 Method and apparatus for determining ac voltage waveform anomalies |
| 07/20/2011 | EP2344895A2 Mutual capacitance measuring circuits and methods |
| 07/20/2011 | CN201904769U Quick switching device for sampling circuit gears |
| 07/20/2011 | CN201904741U Photovoltaic array type lightning protection junction box |
| 07/20/2011 | CN201904616U Intelligent surge protector with thunder and lightning counting function |
| 07/20/2011 | CN201904515U Power socket with leakage current measuring protective device |
| 07/20/2011 | CN201903660U Infrared sensor with battery having long service life |
| 07/20/2011 | CN201903631U Special pressure measuring tool for storage battery |
| 07/20/2011 | CN201903628U Intelligent mechanical characteristic comprehensive test instrument for high-voltage switch |
| 07/20/2011 | CN201903609U Impulse voltage compound high-voltage direct current transmission converter valve fault current tester |
| 07/20/2011 | CN201903593U Mobile three-phase current and voltage balance recording analyzer |
| 07/20/2011 | CN201903584U Multifunction direct current electricity meter for photovoltaic system |
| 07/20/2011 | CN201903580U Random waveform measuring device based on genlocking and semiwave estimation |
| 07/20/2011 | CN201903579U Measuring device for carrying out online measurement on voltage of 48 monomer batteries |
| 07/20/2011 | CN201903578U Novel extensible monolithic voltage detection system for fuel cells |
| 07/20/2011 | CN201903577U Low-voltage AC/DC test pencil |
| 07/20/2011 | CN201903576U Power cable recognition device based on soft sensor |
| 07/20/2011 | CN201903575U Direct current detection circuit and inverter air-conditioner applying same |
| 07/20/2011 | CN201903574U Non-contact voltage and current sampler |
| 07/20/2011 | CN201903573U Current detection and amplification circuit used for two-wire manufactured instrument |
| 07/20/2011 | CN201903572U Power monitoring instrument |
| 07/20/2011 | CN201903571U Intelligent monitor device of transmission tower high-voltage cable |
| 07/20/2011 | CN1825732B Power supply switch circuit |
| 07/20/2011 | CN1777026B Voltage comparator circuit with symmetric circuit topology |
| 07/20/2011 | CN102131328A Power-on circuit of LED (light-emitting diode) drive chip |
| 07/20/2011 | CN102130505A High-voltage switch controller with metering function |
| 07/20/2011 | CN102129047A Check device for power supply unit (PSU) |
| 07/20/2011 | CN102129045A Device for measuring current of power supply unit (PSU) |
| 07/20/2011 | CN102128999A Electric energy quality monitoring device |
| 07/20/2011 | CN102128980A Method for detecting frequency at static variable-frequency starter end of pumped storage power station |
| 07/20/2011 | CN102128975A Voltage stabilization online monitoring phasor data measurement device and phasor measurement method |
| 07/20/2011 | CN102128974A Digital ray imaging voltage sensor |
| 07/20/2011 | CN102128973A Voltage zero-crossing detecting circuit and DC-DC converter with same |
| 07/20/2011 | CN102128972A Sensor device for monitoring transient voltage of broadband integral type power grid |
| 07/20/2011 | CN102128971A Insulated and charged testing device for capacitive equipment and method thereof |