| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 01/07/2009 | CN101339598A Identity chip portable read-write machine |
| 01/07/2009 | CN101339221A Test device for reactor volt-second characteristic of high voltage direct current transmission valve |
| 01/07/2009 | CN101339209A Method and circuit for on-load detection in boosted circuit using impulse width |
| 01/07/2009 | CN101339208A Voltage quality monitoring and perturb automatic classification method based on analysis in time-domain |
| 01/07/2009 | CN101339207A Method for enhancing optical electric current sensor stability |
| 01/07/2009 | CN100449921C Voltage detection circuit, power supply unit and semiconductor device |
| 01/07/2009 | CN100449322C Measurement circuit with improved accuracy |
| 01/06/2009 | US7474972 Bandwidth multiplication for a test and measurement instrument using non-periodic functions for mixing |
| 01/06/2009 | US7474128 Transient voltage detecting circuit for electronic system having multiple of power supplies |
| 01/02/2009 | DE102008030411A1 Integrierter Hybrid-Stromsensor Built-in Hybrid Current Sensor |
| 01/02/2009 | DE102007029123A1 System und Verfahren zur Erfassung der Kennlinien für eine Leuchtdioden-Anordnung System and method for detecting the characteristics of a light emitting diode assembly |
| 01/01/2009 | US20090006015 Method and apparatus for measuring current density in conductive materials |
| 01/01/2009 | US20090006013 Device and a Method For Estimating Transistor Parameter Variations |
| 12/31/2008 | WO2009000236A2 High-dynamic ammeter with small time constant |
| 12/31/2008 | WO2008137651A3 Adaptive filters for fiber optic sensors |
| 12/31/2008 | CN201174330Y Live locking up electroscope device |
| 12/31/2008 | CN201173967Y Three phase magnetometer |
| 12/31/2008 | CN201173953Y Portable double-display automatic range digital megameter |
| 12/31/2008 | CN201173947Y Battery voltage detection circuit |
| 12/31/2008 | CN201173946Y Microampere meter circuit |
| 12/31/2008 | CN201173945Y Current sensor |
| 12/31/2008 | CN201173943Y Capacity type high pressure sensor |
| 12/31/2008 | CN201173942Y Digital multi-purpose meter electric current plug jack automatic recognition device |
| 12/31/2008 | CN101335464A Integrated control system for electricity distributing and metering |
| 12/31/2008 | CN101334430A High accuracy electric current and temperature on-line detection device and its sampling method |
| 12/31/2008 | CN101334429A Surge electric current test circuit |
| 12/31/2008 | CN101334428A Method and device for separating voltage electric current signal of electrical power system |
| 12/31/2008 | CN101334427A Reflecting type full-optical fiber current sensor |
| 12/31/2008 | CN101332042A Power supply base of wireless electric water-boiling vessel |
| 12/31/2008 | CN100447574C Open-phase detecting method of three-phase transformer |
| 12/30/2008 | US7471118 Squelch detection system for high speed data links |
| 12/30/2008 | US7471075 Multi-test Arc fault circuit interrupter tester |
| 12/30/2008 | CA2427147C Sensor for monitoring electronic detonation circuits |
| 12/25/2008 | US20080316383 Method for detecting storage voltage, display apparatus using the storage voltage and method for driving the display apparatus |
| 12/25/2008 | US20080315682 Powered device for power over ethernet system with increased cable length |
| 12/24/2008 | WO2008079177A3 Industrial universal electrometer |
| 12/24/2008 | EP2005201A1 Method for measuring an alternating current which is generated using inverters, and arrangement for carrying out the method |
| 12/24/2008 | EP2005200A2 Site analysis methodology and device for testing electric power |
| 12/24/2008 | DE102008028340A1 Integrierter Batteriespannungssensor mit Hochspannungsisolation, Batterieabfühlsystem und Verfahren dafür Integrated battery voltage sensor with high voltage isolation, Batterieabfühlsystem and method therefor |
| 12/24/2008 | DE102007028344A1 Flow measurement module for use in motor vehicle, has delta sigma modulator connected with inputs, and level shifter converting potential of digital output signal into value related to reference potential |
| 12/24/2008 | CN201171153Y DC protection test control apparatus |
| 12/24/2008 | CN201170792Y Apparatus for measuring AC parameter |
| 12/24/2008 | CN101331402A Current measurement circuit and method |
| 12/24/2008 | CN101329381A Method for detecting short circuit fault with current change rate |
| 12/24/2008 | CN101329378A Device for detecting vibrating machinery electric appliance operating parameters |
| 12/24/2008 | CN101329373A Method for detecting storage voltage, display apparatus using the storage voltage and method for driving the display apparatus |
| 12/24/2008 | CN101329372A Method and apparatus for outputting switch type circuit high pressure / high current |
| 12/24/2008 | CN101329370A Electrical quantity measuring device for electric cable |
| 12/24/2008 | CN100446208C Test system with differential signal measurement |
| 12/24/2008 | CN100445757C Valley bottom voltage detection device |
| 12/24/2008 | CN100445756C Voltage detection circuit, overcurrent detection circuit, charging current control system, and voltage detection method |
| 12/24/2008 | CN100445755C DC four-measurement range potential difference meter |
| 12/24/2008 | CN100445754C Portable three-measurement range potential difference meter |
| 12/23/2008 | US7468549 Method for producing a package for an electronic circuit and a substrate for a package |
| 12/18/2008 | WO2008119639A3 Current control device |
| 12/18/2008 | US20080313006 Systems, methods, and devices for managing emergency power supply systems |
| 12/18/2008 | US20080312856 Self-Calibrating Voltage Sensor |
| 12/18/2008 | US20080312855 Systems and Methods for Power Hardware in the Loop Testing |
| 12/18/2008 | US20080312854 Method for Measuring Electric Current in a Plurality of Conductors |
| 12/18/2008 | US20080310648 Current sensing system and method |
| 12/18/2008 | US20080309528 Device for detecting voltage and analog-to-digital converter (ADC) using the same |
| 12/18/2008 | US20080309320 Negative voltage detection circuit for synchronous rectifier mosfet |
| 12/18/2008 | US20080309317 Integrated Battery Voltage Sensor with High Voltage Isolation, a Battery Voltage Sensing System and Methods Therefor |
| 12/18/2008 | US20080309315 Enhanced precise location |
| 12/18/2008 | DE202008012593U1 Strommessvorrichtung A current measuring device |
| 12/17/2008 | EP2002273A1 Electric potential sensor |
| 12/17/2008 | EP2002268A1 Methods and apparatus for differential signaling using absolute pressure sensors |
| 12/17/2008 | CN201167229Y Overload protection and power failure detection for multipath high speed pulse output circuit |
| 12/17/2008 | CN201166916Y Intelligent remote integration monitoring system for a power equipment |
| 12/17/2008 | CN201166694Y Portable tester for surge protector |
| 12/17/2008 | CN201166692Y Apparatus for detecting abnormal state of illuminating device |
| 12/17/2008 | CN201166686Y Wide band high voltage intelligent resistance type current sensor |
| 12/17/2008 | CN201166685Y Wide band high voltage intelligent resistance voltage division type voltage sensor |
| 12/17/2008 | CN201166684Y Circuit for detecting electrical level |
| 12/17/2008 | CN201165611Y Washing machine having power off resume function |
| 12/17/2008 | CN101324655A Low cost batteries monomer battery voltage measuring circuit |
| 12/17/2008 | CN101324647A Method and apparatus for monitoring motorcycle electric appliance operation |
| 12/17/2008 | CN101324642A Method and device for collecting multi-channel electromagnetic valve current |
| 12/17/2008 | CN101324641A Flow field plate for measuring fuel battery local current density |
| 12/17/2008 | CN100443904C I/F conversion device and photo-detection device |
| 12/17/2008 | CN100443903C Open-loop electric current sensor and a power supply circuit provided with such sensors |
| 12/16/2008 | US7467051 Method and a system for testing of a power management system of a marine vessel |
| 12/16/2008 | US7466118 Compensation of simple fibre optic Faraday effect sensors |
| 12/16/2008 | CA2347749C Fiber optic current sensor |
| 12/11/2008 | WO2008150645A1 An integrated circuit having a multi-purpose node configured to receive a threshold voltage and to provide a fault signal |
| 12/11/2008 | WO2008148793A1 Increased reliability in the processing of digital signals |
| 12/11/2008 | WO2008148428A1 Method and device to predict a state of a power system in the time domain |
| 12/11/2008 | US20080306700 Photvoltaic solar array health monitor |
| 12/11/2008 | US20080304305 Boost converter with integrated high power discrete fet and low voltage controller |
| 12/11/2008 | US20080303507 Current Measurement Circuit and Method |
| 12/11/2008 | US20080303506 Voltage tolerance measuring apparatus for motherboard |
| 12/11/2008 | US20080303353 Network-based aircraft secondary electric power distribution system |
| 12/11/2008 | DE102007026057A1 Elektrode und Messvorrichtung zur Messung der elektrischen Aktivität in einem elektrisch aktiven Gewebe Electrode and measuring device for measuring the electrical activity in an electrically active tissue |
| 12/10/2008 | CN201163360Y Energy-saving timing switch of household electrical appliance |
| 12/10/2008 | CN201163294Y Overloading prompter of single-phase motor with centrifugal switch |
| 12/10/2008 | CN201163290Y Vehicle electric signal test device |
| 12/10/2008 | CN201163288Y Power supply voltage detecting circuit |
| 12/10/2008 | CN201163287Y High voltage type voltage transducer with supporting insulator function |
| 12/10/2008 | CN201163205Y Self-power supplying device for flowmeter |
| 12/10/2008 | CN201162544Y Intelligent monitoring instrument for mine stray current |