Patents
Sitemap › G01 - Measuring; Testing › G01R - Measuring electric variables; Measuring magnetic variables › G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850)
12/2012
12/06/2012DE102011076842A1 Method for identifying inductive load in electric switch for connecting to supply voltage source, involves evaluating voltage potential at circuit nodes of inductive load with switch during testing phase
12/06/2012DE102011076722A1 Verfahren zur Stromermittlung in einer mehrphasigen Maschine Method for current detection in a multi-phase machine
12/06/2012DE102011076709A1 Method for measuring current in five-phase rotary field electric machine in vehicle, involves providing intermediate circuit with capacitor and switches, and measuring current in intermediate circuit using shunt resistor
12/06/2012DE102006039411B4 Messvorrichtung zur Messung eines elektrischen Stroms Measuring device for measuring an electric current
12/05/2012EP2530476A2 Phase detection apparatus for alternator and method thereof
12/05/2012EP2529376A2 Data processing system having brown-out detection circuit
12/05/2012CN202586916U Electronic switching circuit for load detection
12/05/2012CN202586753U Inner power supply circuit for wind range power input
12/05/2012CN202586455U Secondary card hand-held verification instrument charging protection alarm circuit
12/05/2012CN202586360U Smart capacitance monitor
12/05/2012CN202586309U Intelligent recloser
12/05/2012CN202586267U On-line phase voltage monitoring device
12/05/2012CN202586262U Overcurrent protection circuit
12/05/2012CN202585278U New type residual-current circuit breaker display circuit
12/05/2012CN202584106U Network card interface and USB (Universal Serial Bus) interface testing device
12/05/2012CN202583825U Oil field oil well equipment monitoring apparatus
12/05/2012CN202583772U Metering and timing chip
12/05/2012CN202583764U Frequency voltage stability control system
12/05/2012CN202583742U Automatic addressing monitor of automobile battery module
12/05/2012CN202583440U Electromagnetic measurement system
12/05/2012CN202583425U Voltage sensor
12/05/2012CN202583341U Device capable of detecting dc looped-network failures of dc power supply systems
12/05/2012CN202583317U Fire-fighting forced-cut carrier feedback device
12/05/2012CN202583316U Circuit for collecting positive and negative current by single power supply
12/05/2012CN202583315U On-line monitoring system for transformer iron core grounding current
12/05/2012CN202583314U Measuring instrument for a protective relaying outlet connection point and pressing plate potential
12/05/2012CN202583313U Light sensor testing device
12/05/2012CN202583312U Detector for three-phase current unbalance rate detector of low-voltage line
12/05/2012CN202583311U Alternating current zero-crossing detection circuit
12/05/2012CN202583310U Isolated type circuit-voltage zero-crossing detecting circuit
12/05/2012CN202583309U Intelligent digital zinc oxide lightning arrester on-line monitor
12/05/2012CN202583308U Electricity measuring pen
12/05/2012CN202583307U Power-down alarming graded detecting circuit for broadband terminal device with backup battery
12/05/2012CN202583306U Low voltage induction type electroscope with insulated telescopic rod
12/05/2012CN202583305U Intelligent induction type outdoor or indoor high voltage live display locking device
12/05/2012CN202583304U Traffic signal controller digital type red light signal detection circuit
12/05/2012CN202583303U High-voltage bushing tap leakage current sampling device
12/05/2012CN202583302U Distribution network capacitance current testing device
12/05/2012CN202583301U Voltage acquiring module for blood detection apparatus
12/05/2012CN202583300U Portable residual current detection and display device
12/05/2012CN202583299U Special junction pole for testing capacitive current of neutral point ungrounded system
12/05/2012CN202583298U Alternating current voltage isolated sampling circuit
12/05/2012CN202583297U Measurement system for frequency voltage stability control device
12/05/2012CN202583296U Voltage monitor
12/05/2012CN202583295U Current detection and conversion circuit of injection machine
12/05/2012CN202583294U A primary voltage sensor capable of directly measuring capacitive current
12/05/2012CN202583291U Electronic measurement device
12/05/2012CN202583290U Wiring circuit for digital voltmeter
12/05/2012CN202583261U Current sensor used for photovoltaic conflux monitoring
12/05/2012CN102812371A Method for examining a state of a circuit of a motor vehicle
12/05/2012CN102812369A Insulation deterioration diagnosis device
12/05/2012CN102810996A Inverter with storage battery under-voltage acousto-optic indication
12/05/2012CN102810540A LDMOS (laterally diffused metal oxide semiconductor) device with current sampling function
12/05/2012CN102809682A Current sensing circuit, printed circuit board component and current sensor device
12/05/2012CN102809681A Inrush current recognition method and low-voltage and medium-voltage quick disconnection protection method utilizing same
12/05/2012CN102809680A Anti-interference switching value transmission circuit
12/05/2012CN102809679A Method and device for sampling electric monitoring signal
12/05/2012CN102043080B Current sampling circuit of high-frequency charger
12/05/2012CN102033178B Intelligent bus duct simulating, monitoring and analyzing system
12/05/2012CN101839937B Device for power supply detection
12/05/2012CN101788602B Earth leakage tester, earth leakage circuit breaker equipped with the same, circuit breaker, and insulation monitor
12/05/2012CN101686035B Multiphase motor driving device
12/04/2012US8324902 Stun device testing apparatus and methods
12/04/2012US8324884 Apparatus and method for DC voltage measurement
11/2012
11/29/2012WO2012162091A2 Method and apparatus pertaining to automatic electrical-fault detection
11/29/2012WO2012160062A1 Transition detection method for automatic-setup non-intrusive appliance load monitoring
11/29/2012WO2012101421A3 Current transformer
11/29/2012US20120303306 Method of subsynchronous resonance detection
11/29/2012US20120303299 Parametric multi-cycle averaging in an intelligent electronic device
11/29/2012US20120303298 Evaluation method for solar power generation system, evaluation device, and evaluation program
11/29/2012US20120303166 System and method of safe and effective engergy usage and conservation for data centers with rack power distribution units
11/29/2012US20120299582 Input power measuring device
11/29/2012US20120299580 Transient recovery circuit for switching devices
11/29/2012US20120299577 Component detection device and component detection method
11/29/2012US20120299576 Photovoltaic power generating system
11/29/2012DE112010002926T5 Elektrometer mit breitem Dynamikbereich und schneller Reaktion Electrometer with a wide dynamic range and fast response
11/29/2012DE102011102978A1 Strommessumformer Current Transducers
11/29/2012CA2837371A1 Method and apparatus pertaining to automatic electrical-fault detection
11/28/2012EP2528079A2 Electro-magnetic contactor and monitoring system of the same
11/28/2012EP2528033A1 Virtual sub-metering using combined classifiers
11/28/2012CN202563019U Experimental system for testing characteristics of offshore wind electric flexible direct current transmission converter
11/28/2012CN202563002U Lightning arrester remote on-line monitoring system
11/28/2012CN202563001U Analog voltage detection lamp
11/28/2012CN202563000U Indicating circuit capable of displaying alternating current state
11/28/2012CN202562999U Induction type electricity testing device
11/28/2012CN202562998U AC high voltage electroscope
11/28/2012CN202562997U Display panel of converter
11/28/2012CN202562996U Current sensor used for distribution network single-phase ground fault line selecting device
11/28/2012CN202562995U Voltage detection circuit and bean curd machine
11/28/2012CN202562994U Three-phase voltage sampling circuit used for control and protection switch
11/28/2012CN202562993U Three-phase voltage sampling circuit
11/28/2012CN202562992U Clip on ammeter
11/28/2012CN202562991U Clamp ampere meter
11/28/2012CN202562990U Alternating voltage sampling circuit of offshore wind power flexible direct current power transmission system
11/28/2012CN202562989U Alternating current sampling circuit of offshore wind-power flexible direct current transmission system
11/28/2012CN202562988U Synchronous phase control simulation device
11/28/2012CN202562986U Current-to-voltage converter
11/28/2012CN202562964U Clip-on ammeter
11/28/2012CN202562733U High voltage breaker mechanical property on-line live-line detection system
11/28/2012CN102803979A Electrochemical cell monitoring and balancing circuit with self-diagnostic feature
1 ... 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 ... 299