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)
06/2010
06/10/2010WO2010064753A1 Leakage detection apparatus
06/10/2010WO2010064161A1 A simple and stable reference for ir-drop and supply noise measurements
06/10/2010WO2010063635A1 Detection of sinusoidal waveform in noise
06/10/2010US20100145645 System and method of determining light source aging
06/10/2010US20100145217 Scalp potential measuring method and apparatus
06/10/2010US20100142259 Nanogaps: methods and devices containing same
06/10/2010US20100141237 Active Sensor, Use Thereof and Method for Compensating Amplitude Fluctuations in the Output Current Signal of an Active Sensor
06/10/2010US20100141219 Battery protection circuit
06/10/2010DE102008044301A1 Method for monitoring electric load, involves detecting error, when current value, which characterizes current flowing through load, is greater than threshold value
06/10/2010DE102008044283A1 Circuit arrangement for monitoring electrical voltage of supply network, has connection for coupling circuit arrangement with supply network
06/10/2010DE102008044271A1 Verfahren zu Funktionsüberprüfung einer elektrischen Heizeinrichtung Method to function testing an electric heater
06/09/2010EP2194386A2 Measuring method for calculating a choke current
06/09/2010CN201504189U Three-phase inverter
06/09/2010CN201504102U Distribution load monitor
06/09/2010CN201503478U Electrical parameter measuring device for LEDs
06/09/2010CN201503471U Device for detecting and recording working states of direct current electric device and storage battery
06/09/2010CN201503468U Electric energy meter for voltage quality
06/09/2010CN201503467U Voltage detection device of frequency converter for plasma separator
06/09/2010CN201503466U Rain and snow prevention high-low voltage electroscope with insulators
06/09/2010CN201503465U Residual voltage tester
06/09/2010CN201503464U DC double closed loop speed-regulation excitation loss detection circuit for magnetic field commutation
06/09/2010CN201503463U Centralized-type fault alarm unit of LED signal controller
06/09/2010CN201503462U Dispersion-type fault alarm unit of LED signal controller
06/09/2010CN201503459U High impedance digital multipurpose meter based on adjustable linear
06/09/2010CN101729005A Method for controlling brushless DC motor based on FPGA
06/09/2010CN101728938A Sensor mount assemblies and sensor assemblies
06/09/2010CN101728818A Multi-drive amplifier system and overcurrent detection method thereof
06/09/2010CN101726708A Battery voltage data acquisition system
06/09/2010CN101726678A Electricity quality evaluation system and method
06/09/2010CN101726658A Single-channel time-sharing multiplexing sampling method and sampling circuit thereof
06/09/2010CN101726657A Device for measurement and conversion of voltage signal
06/09/2010CN101726656A Harmonic current detection and filtration method and device of active power filter
06/09/2010CN101726655A Measuring method and detecting device for winding voltage of switched reluctance motor
06/09/2010CN101726654A Device and method for measuring electrical characteristic parameter
06/09/2010CN101726653A System and method for identifying issues in current and voltage measurements
06/09/2010CN101726652A Method for sampling secondary loop in power system with optimized measurement accuracy
06/09/2010CN101726651A Lightning stroke display device for high-tension cable strike-preventing lightning conductor
06/09/2010CN101726650A Monopolar high-voltage potential indicator capable of changing display direction
06/09/2010CN101726649A Signal detection circuit, emergency power switching device and emergency light
06/09/2010CN101726648A Neuron adaptive harmonic current detection circuit based on low pass filter
06/09/2010CN101726647A Current sensor based on photonic crystal fiber grating
06/09/2010CN101726646A Equipotential cavity precise high-voltage sensor
06/09/2010CN101344572B Chopped wave test circuit and method for semiconductor power device
06/09/2010CN101332042B Power supply base of wireless electric water-boiling vessel
06/09/2010CN101285857B Alternating current voltage-electric current converter and device and method for measuring alternating-current small current
06/09/2010CN101281227B Ground wire voltage and current detecting device
06/09/2010CN101226213B Method and apparatus for detecting electric machine phase current
06/09/2010CN101169456B USB bus current detection device
06/09/2010CN101140317B Assembled battery total voltage detection and leak detection apparatus
06/08/2010US7734976 Synchronizing control of test instruments
06/08/2010US7734380 Push communications architecture for intelligent electronic devices
06/08/2010US7733080 Revolvable clamp meter
06/08/2010US7733079 Clock distribution circuit and test method
06/08/2010US7733077 Multi-sensor mapping omnidirectional sonde and line locators and transmitter used therewith
06/03/2010WO2010062141A2 Apparatus and method for monitoring cell voltage of battery pack
06/03/2010US20100134222 Residual-current circuit breaker
06/03/2010US20100134091 Abnormal switching monitoring device and abnormal switching monitoring method
06/03/2010US20100134089 System and method for phase load discovery
06/02/2010EP2192414A1 Detection of sinusoidal waveform in noise
06/02/2010EP2191444A1 Method for tomographic reconstruction of a measurement variable by specific determination of the measurement points
06/02/2010DE102008061006A1 Verfahren und Vorrichtung zur Messung von elektrischen Strom Method and device for measurement of electrical current
06/02/2010DE102008059853A1 Schaltungsanordnung mit einem Lasttransistor und einem Messtransistor Circuit arrangement having a load transistor and a sense transistor
06/02/2010CN201499118U Soft starter capable of monitoring current after bypass
06/02/2010CN201498917U Electric testing combined pull rod
06/02/2010CN201498061U All-round power line alarm device
06/02/2010CN201497800U Automatic testing device for meter reading system
06/02/2010CN201497796U Relay protection detector
06/02/2010CN201497783U Plane model control panel test bench
06/02/2010CN201497777U Power utility monitoring system
06/02/2010CN201497774U Lightning-stroke protection and monitoring device with discharge electrode and discharge counter for ten-kilovolt circuit
06/02/2010CN201497773U High-voltage ignition detector for vehicle
06/02/2010CN201497772U Star-shaped current sensor structure used for metering gauge
06/02/2010CN201497771U Precision full-wave detection type current detection device
06/02/2010CN201497770U Plane model control panel test system
06/02/2010CN201497769U Power grid master line and branch line power failure screening system
06/02/2010CN201497768U Device for measuring phase current of angle joint winding
06/02/2010CN201497767U Lightening current measuring system
06/02/2010CN201497766U Current sensor for realizing voltage sampling for current divider by adopting linear photoelectric coupler
06/02/2010CN201494167U Small tool test pencil structure
06/02/2010CN1960392B Handset with function of electroprobe
06/02/2010CN1265479B DC-DC inverter having inductive current test and related method
06/02/2010CN101719324A Simulation training system of voltage drop load test in electric power system measurement loop
06/02/2010CN101718847A Device for measuring high-voltage pulse power supply of xenon lamp of laser device
06/02/2010CN101718820A Power distribution transformer monitoring terminal and method for calculating current complex power precision thereof
06/02/2010CN101718815A Direct current (DC) bus voltage-sampling circuit of servo system converting voltage into frequency
06/02/2010CN101718814A Method for measuring and calculating electrical quantities of safety and stability control device based on FPGA
06/02/2010CN101718813A Method for monitoring voltage acquisition circuit of electric power secondary system
06/02/2010CN101718812A Measurement circuit of direct current
06/02/2010CN101718811A Device and method for testing voltage time and area of reactor
06/02/2010CN101718810A Method for measuring ferroelectric hysteresis loop of leakage ferroelectric film
06/02/2010CN101718809A System and method for acquiring power quality data
06/02/2010CN101718808A Intelligent virtual instrument and application method
06/02/2010CN101718807A High speed response performance detecting device of yarn stopping pin
06/02/2010CN101718806A Testing device and testing method for spark voltage of electrolyte under non-critical state
06/02/2010CN101376982B Probe for monitoring sacrificial anode current output and manufacturing method thereof
06/02/2010CN101349714B Method for electrically measuring power line zero sequence impedance by industrial frequency interference source
06/02/2010CN101319957B On-line automatic testing method and system for beam vibration fatigue reliability of micro electro-mechanical systems
06/02/2010CN101285854B Self focusing -type optical current mutual inductor
06/02/2010CN101271138B Photo-current and photo-voltage measuring pool
06/02/2010CN101246973B Vehicle-use battery monitoring apparatus
1 ... 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 ... 299