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)
11/2013
11/27/2013CN203310895U Current transformer
11/27/2013CN203310893U Detecting circuit for -48V direct current voltage
11/27/2013CN203310891U Wideband voltage collecting device
11/27/2013CN203310879U Calibration circuit of electronic device
11/27/2013CN203310868U Voltage measuring integrated wiring device for electric energy meter
11/27/2013CN203305182U Multifunctional nipper pliers with voltage detection function
11/27/2013CN103414211A Method for detecting synchronization of distributed power supply and power grid
11/27/2013CN103413747A Space plasma measuring device
11/27/2013CN103412186A Ring main unit current collecting device
11/27/2013CN103412185A Lightning current detecting device
11/27/2013CN103412184A Technology for monitoring and collecting original terminal currents of power equipment
11/27/2013CN103412183A Multi-channel current type radiation detecting real-time comparison measuring device
11/27/2013CN103412182A Method for monitoring voltage qualification rate by use of electric energy metering device
11/27/2013CN103412181A Inductance and current zero-cross detection circuit for correcting boost type power factor
11/27/2013CN103412180A Overcurrent detection circuit
11/27/2013CN103412179A Charge indicator of high-voltage power transmission line
11/27/2013CN103412178A Multi-channel thermal stimulus current measuring device used for dielectric substances
11/27/2013CN103412177A Measuring device for dielectric substance thermally stimulated currents under high withstand voltage and vacuum condition
11/27/2013CN103412176A Real-time and on-line AC/DC arrester current monitoring sensor based on magnetoresistance
11/27/2013CN103412175A Photonic crystal fiber current magnetic field sensor and manufacturing and measuring method thereof
11/27/2013CN103412174A Alternating voltage signal detection circuit
11/27/2013CN103412173A Mobile phone PCB voltage testing jig
11/27/2013CN103412172A Multi-channel leakage current measurement system and measurement method
11/27/2013CN103412171A Extreme learning machine-based power grid harmonic voltage signal detection method
11/27/2013CN103412170A Laser threshold current testing method and device thereof
11/27/2013CN103412169A Wireless double-wire-measuring AC current meter
11/27/2013CN103412168A High-precision current sampling circuit of intelligent electric meter
11/27/2013CN103412167A Coaxial disk type splitter for measuring recurrent pulse current
11/27/2013CN102508014B Power line carrier communication zero-crossing detection system and method thereof
11/27/2013CN102435844B Sinusoidal signal phasor calculating method being independent of frequency
11/27/2013CN102360035B Method for realizing detected current on off-grid wind and light supplementary generation system
11/27/2013CN101937069B Voltage characteristic detection system and method of SOC (System On Chip) intelligent electric meter
11/26/2013US8594957 System, method and computer program for detecting an electrostatic discharge event
11/26/2013US8594956 Power line energy harvesting power supply
11/26/2013US8593163 Surface-conforming obscured feature detector
11/26/2013US8593135 Low-cost power measurement circuit
11/26/2013US8593133 Current measuring systems and methods of assembling the same
11/21/2013WO2013173572A1 Sensor device and method of manufacture and use
11/21/2013WO2013171415A1 Method for determining a maximum voltage value of a load signal by sampling
11/21/2013WO2013143650A4 Time frame measuring method with calibration in the frequency range
11/21/2013US20130311799 Weighted control in a voltage scaling system
11/21/2013US20130311120 Battery voltage detection method and apparatus
11/21/2013US20130311113 Prognostics and life estimation of electrical machines
11/21/2013US20130308152 Power supply device and image forming apparatus having the same
11/21/2013US20130307523 Analog unit of sequencer system
11/21/2013US20130307521 Strain relieving feature for printed circuit board assemblies
11/21/2013DE102013208953A1 Fehlerdetektierung in einem elektrischen System eines Fahrzeugs Error detection in an electrical system of a vehicle
11/21/2013DE102012208460A1 Umrichter für eine elektrische Maschine Inverter for an electric machine
11/21/2013DE102012208350A1 Battery system for use in motor vehicle, is formed by controlling current measuring unit and cell voltage measuring unit with synchronized trigger signals, where cell voltage measuring unit is provided for measuring battery current
11/21/2013DE102012104348A1 Contactless current sensor system for measuring electric current flowing in current conductor, has ferromagnetic core portions arranged so that two air gaps are formed such that magnetic field sensors are arranged in each air-gaps
11/20/2013EP2664930A2 Power supply device and image forming apparatus having the same
11/20/2013EP2663871A2 Current transformer
11/20/2013CN203301050U Novel, safe and reliable high-voltage discharge bar
11/20/2013CN203300911U Safe earth leakage protection plug with charged ground line alarm function
11/20/2013CN203299812U Signal collection bus controller with 8 analog quantity input channels and 3 digital quantity input channels
11/20/2013CN203299332U Mechanical line power-off detection electroprobe
11/20/2013CN203299307U Electrical equipment fault detection device
11/20/2013CN203299265U Thunder counter
11/20/2013CN203299264U Overvoltage on-line monitor system
11/20/2013CN203299263U Electroscope pen of direct or alternate currents
11/20/2013CN203299262U Electric power device work power supply monitor
11/20/2013CN203299261U Field strength method-based high voltage power transmission line electrification indicator
11/20/2013CN203299260U Circuit capable of acquiring narrow pulse peak value
11/20/2013CN203299259U Resistor-free current sampling circuit
11/20/2013CN203299258U Application circuit for detecting positive and negative voltages by utilizing high-linearity analog photocoupler
11/20/2013CN203299257U Portable static voltage collecting reader
11/20/2013CN203299256U Capacitive screen voltage detecting circuit
11/20/2013CN203299255U Voltage detection circuit formed by connecting a plurality of electric core units in series and battery protection system
11/20/2013CN203299254U Feedback balance type fiber current transformer
11/20/2013CN1853112B Electronic switching circuit, switching circuit test arrangement and method for determining the operativeness of an electronic switching circuit
11/20/2013CN103403559A Voltage detection apparatus and method of reducing dispersion of dark currents
11/20/2013CN103403536A Discharge ionization current detector
11/20/2013CN103399265A High voltage cable terminal partial discharge ultrasonic monitor
11/20/2013CN103399215A Phase-lack and low-voltage detection circuit for three-phase alternating current
11/20/2013CN103399201A Universal detection chip system for weak signals of sensor
11/20/2013CN103399200A Idle current detection and calculation method for power network current
11/20/2013CN103399199A Portable flat-computer voltage test fixture
11/20/2013CN103399198A Current sensor auxiliary device having SOC (system on chip) computing function
11/20/2013CN103399197A Multifunctional test pencil
11/20/2013CN103399196A Novel high-voltage electricity display
11/20/2013CN103399195A Night vision high-voltage electroscope
11/20/2013CN103399194A Device for testing stability of working current
11/20/2013CN103399193A Variable optical attenuator-based bus current detection method and current transformer equipment
11/20/2013CN103399192A Split type zero flux small electric current sensor for on-line monitoring and charged test of capacitive equipment
11/20/2013CN103399191A Sideband demodulation-based FBG-GMM (Fiber Bragg Grating-Giant Magnetostrictive Material) current sensor
11/20/2013CN103399190A Calculation method for sensing overvoltage of power distributing line based on PSCAD (power systems computer aided design)/EMTDC (electromagnetic transients including DC)
11/20/2013CN103399042A NOx sensor chip detection circuit
11/20/2013CN102495273B Single current transformer (CT) input dual-precision sampling measuring and protecting integrated device
11/20/2013CN102495266B Ion current detection device for magnetic deflection mass spectrograph
11/20/2013CN102495261B Low-voltage detection circuit capable of working intermittently
11/20/2013CN102435832B Single-phase distribution transformer operation monitoring metering device
11/20/2013CN102393546B Sensing fiber, sensing fiber ring and through-type all-fiber current sensor
11/20/2013CN102353832B Multi-way direct current voltage detection system of cascade inverter
11/20/2013CN102262173B Method for measuring buried depth of buried pipeline, size and direction of stray current and geomagnetic azimuth angle
11/20/2013CN102141584B Digital electronic fluorescent scanning voltage sensor
11/20/2013CN102112888B Tracker circuit and method for automated test equipment systems
11/20/2013CN102064518B High-sensitivity current measurement and control device
11/20/2013CN101661056B Methods and apparatus for monitoring average current and input power in an electronically commutated motor
11/20/2013CN101566642B Orthogonal radio frequency voltage/current sensor with high dynamic range
11/19/2013US8589100 System and methods for extracting correlation curves for an organic light emitting device
1 ... 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 ... 299