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)
11/2009
11/10/2009	US7616028 Sense amplifier for low voltage high speed sensing
11/10/2009	US7616012 Systems, methods, and apparatus for measuring capacitance in a stator component
11/10/2009	US7615985 Probe for measuring characteristics of an excitation current of a plasma, and associated plasma reactor
11/06/2009	CA2664571A1 Precision ac current measurement shunts
11/05/2009	WO2009134501A2 Methods for measurement and characterization of interferometric modulators
11/05/2009	US20090276173 System for remedying electrical power instability
11/05/2009	US20090274578 Method of monitoring corrosion potential of engineering alloys in aqueous systems
11/05/2009	US20090273334 System and Method for Efficient Association of a Power Outlet and Device
11/05/2009	DE102008020929A1 Defective circuit-breaker diagnosing device for converter of e.g. hybrid vehicle, has voltage evaluation unit comparing voltage potentials lying at respective inputs, where one of inputs is connected with output of voltage source
11/05/2009	DE102008017618A1 Method for registering or deregistering current measuring device applied in ceiling of building installation system by evaluation unit, involves receiving signal or data of current measuring device
11/05/2009	DE102008013427A1 Anordnung zum Messen einer Stromstärke, Schaltanordnung sowie Verfahren zum Messen einer Stromstärke System for measuring a current, switching arrangement and method for measuring a current
11/04/2009	EP2114000A2 Phase current detectionapparatus
11/04/2009	EP2113999A2 Phase current detection apparatus
11/04/2009	EP2113998A2 Phase current detection apparatus
11/04/2009	EP2113997A2 Phase current detection apparatus
11/04/2009	EP2113996A2 Phase current detection apparatus
11/04/2009	EP2113776A1 Frequency measuring instrument
11/04/2009	EP1943725B1 Measuring a current supplied by a rotating electric machine such as an alternator
11/04/2009	CN201341110Y Analog quantity measuring circuit board of expandable frequency transformer
11/04/2009	CN201340452Y Detecting device of voltage and internal resistance of batteries
11/04/2009	CN201340443Y Electrification warning device capable of displaying through laser hologram characters
11/04/2009	CN201340442Y Electrical test pen
11/03/2009	US7613578 Method for noninvasive determination of a distribution of electrical current and apparatus for the same
11/03/2009	US7612628 Ultrafast sampler with coaxial transition
11/03/2009	US7612553 Current sensor having sandwiched magnetic permeability layer
11/03/2009	US7612552 Electrical phase checking apparatus and method of metering
10/2009
10/29/2009	WO2009088272A3 The method for measuring soc of a battery in a battery management system and the apparatus thereof
10/29/2009	WO2009088271A3 The method for measuring soc of a battery in battery management system and the apparatus thereof
10/29/2009	US20090267627 Method of expanding tester drive and measurement capability
10/29/2009	US20090267619 Device and method for measuring an electrical property of a fluid flowing through a pipe
10/29/2009	US20090267589 Circuit and apparatus for detecting electric current
10/29/2009	US20090267587 Power supply device and switching power supply device
10/29/2009	DE102008020371A1 Method for overload protection of three-phase load by current monitoring sensor, involves applying current sensor for determining difference of two phase currents, where three-phase motors are provided with motor coils
10/28/2009	EP2112515A2 Device and method for detecting zero crossing and voltage amplitude from single pulse signal
10/28/2009	CN101567682A Integrated circuit and method of configuring integrated circuit
10/28/2009	CN101567581A Universal intelligent low-voltage monitoring system
10/28/2009	CN101567493A Assembled structure with separable electrical connector component
10/28/2009	CN101566660A Method and device for measuring electric hysteresis loop and strain loop of ferroelectric material simultaneously
10/28/2009	CN101566648A Conversion state estimation method of equivalent voltage measurement taking PMU into account
10/28/2009	CN101566647A Sinusoidal electric quantity signal conversion and acquisition device
10/28/2009	CN101566646A Method and apparatus for detecting an insufficient phase current in a permanent magnet synchronous motor
10/28/2009	CN101566645A Detection circuit for power supply voltage pulse interference
10/28/2009	CN101566644A High-sensitivity showing ammeter
10/28/2009	CN101566643A Structure of film thermoelectric converter based on bi-material microcantilevel and fabricating method thereof
10/28/2009	CN101566642A Orthogonal radio frequency voltage/current sensor with high dynamic range
10/28/2009	CN101566641A Power system transmission line parameter synchronic measurement and recording device
10/28/2009	CN101566640A Electronic voltage transducer
10/28/2009	CN101566501A Method for measuring plasma electron density by fiber spectrum synergizing discharge current
10/28/2009	CN101564786A Device and method for measuring voltaic arc pressure distribution and current density distribution
10/28/2009	CN100554984C Voltage monitor and electric power storage device using same
10/28/2009	CN100554977C Method for load overcurrent non-loss detection and charging overvoltage protection
10/28/2009	CN100554976C Area voltage stability monitoring method based on synchronous phasor measurement
10/28/2009	CN100554975C Circuit structure of long-acting relaxation oscillation flash type high voltage live display device
10/28/2009	CN100554974C Method and device for detecting semiconductor assembly and its drive control circuit
10/27/2009	US7610178 Noise reduction filter for trigger circuit
10/27/2009	US7609555 Sensing circuit for flash memory device operating at low power supply voltage
10/27/2009	US7609049 Accurate scan-mode voltage detection circuit
10/27/2009	CA2303603C Voltage sensing arrangement
10/25/2009	CA2629871A1 Overload alarm device and method thereof
10/22/2009	WO2009129273A2 Techniques for measuring voltages in a circuit
10/22/2009	WO2009127068A1 Electrical anomaly detection method and system
10/22/2009	US20090261861 Current Detection Circuit
10/22/2009	US20090261838 Battery monitor for marine applications
10/22/2009	US20090261813 Current sensor
10/22/2009	US20090261806 Detection of the state of the elements of an electric branch comprising a load and a switch
10/22/2009	DE19949700B4 Schaltung zur Gleichrichtung einer getakteten Wechselspannung Circuit for rectifying an AC voltage clocked
10/22/2009	DE102009016259A1 Spannungserfassungsvorrichtung mit einem spannungsgesteuerten Oszillator und Batteriezustandssteuerungssystem A voltage measuring device including a voltage controlled oscillator and battery control system
10/22/2009	DE102008019274A1 Vorrichtung zur Überwachung elektrischer Versorgungsleitungen Apparatus for monitoring of electrical supply lines
10/22/2009	DE102008018811A1 Method for determination of current zero crossover of current at phase of polyphase electric motor, involves determining phase angle with occurrence of sign change of measured phase voltage
10/22/2009	DE102008015999A1 Übertragungsweg - Prüfverfahren für eine Gefahrenmeldeanlage Transmission - Test methods for an alarm system
10/22/2009	CA2721250A1 Electrical anomaly detection method and system
10/21/2009	EP2110844A1 Contactless measurement of beam current in charged partical beam system
10/21/2009	EP2110676A2 Method for calculating a useful signal
10/21/2009	EP2110675A2 Device for monitoring electrical supply lines
10/21/2009	CN201331569Y Novel multi-level motor shift-level detecting device
10/21/2009	CN201331563Y DC600V online insulating detection device
10/21/2009	CN201331562Y Alternating current 380V online insulation detecting device
10/21/2009	CN201331553Y DC (direct current) voltage measuring circuit with isolation
10/21/2009	CN201331552Y Voltage isolated type current state discriminating device
10/21/2009	CN201331551Y Microammeter in infrared remote control technology
10/21/2009	CN201329467Y Voltage and current display device for welding machine
10/21/2009	CN101562405A Multifunctional high-voltage power supply
10/21/2009	CN101562348A Charger
10/21/2009	CN101562330A Over-current detection circuit system of permanent synchronous compressor driver
10/21/2009	CN101562329A Over-current detecting method of compressor driver
10/21/2009	CN101561479A Simple motor detector provided with LED display and RS485 network interface
10/21/2009	CN101561462A Phasor amplitude measurement method of power system
10/21/2009	CN101561461A Low-voltage warning device
10/21/2009	CN101561460A Compound signal detection circuit
10/21/2009	CN101561459A Damage-tolerance testing method for lower wall panel of airplane outboard wing
10/21/2009	CN101561458A Method and device for measuring current on line
10/21/2009	CN101561457A Meter device, information processing device and meter driving method
10/21/2009	CN101561456A Direct current side high-voltage detecting method of compressor driver
10/21/2009	CN100553131C Overcurrent detecting device
10/21/2009	CN100553112C Offset PWM signals for multiphase motor
10/21/2009	CN100552459C T-shaped transmission line zero-sequence resistance parameter live measurement method
10/21/2009	CN100552458C High-frequency high-pressure measurement mechanism
10/20/2009	US7605615 Voltage comparator circuit
10/20/2009	US7605598 Undercurrent sense arrangement and method
10/20/2009	US7605594 Automated electrical wiring inspection system

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