| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 07/07/2009 | US7557559 Compact line illuminator for locating buried pipes and cables |
| 07/07/2009 | US7557557 Current detection circuit, load drive circuit, and memory storage |
| 07/07/2009 | US7555938 Thermoelastic self-actuation in piezoresistive resonators |
| 07/02/2009 | US20090167324 Electric potential sensor |
| 07/02/2009 | US20090167292 Current Measuring Apparatus |
| 07/02/2009 | US20090167291 Method And Apparatus For Monitoring Voltage In A Meter Network |
| 07/02/2009 | US20090167289 Monitoring a Protective Device Arranged Upstream of a Switching Device |
| 07/02/2009 | US20090167286 Cable Detection System |
| 07/02/2009 | US20090167261 Current measuring device |
| 07/02/2009 | US20090167096 Pulse Width Modulation For Precision Energy/Power Dumping |
| 07/02/2009 | US20090167093 Systems and Circuits with Multirange and Localized Detection of Valid Power |
| 07/02/2009 | DE102007063591A1 Installationsgerät Installation equipment |
| 07/02/2009 | DE102007062633A1 Anordnung zum potentialfreien Messen von Strömen Arrangement for floating measuring currents |
| 07/01/2009 | EP2074437A1 Method and device for monitoring a system |
| 07/01/2009 | CN201266218Y Terminal device for monitoring and metering distribution transformer |
| 07/01/2009 | CN201266217Y Non-contact type AC rheoscope |
| 07/01/2009 | CN201266216Y High voltage electrified monitoring indication device |
| 07/01/2009 | CN201266215Y Device for measuring MgO exoelectron emission current |
| 07/01/2009 | CN101473232A Circuit arrangement for detecting undervoltage in an energy source |
| 07/01/2009 | CN101470142A Overcurrent detection circuit, decompression converter and overcurrent detection method |
| 07/01/2009 | CN101470141A Overcurrent detecting apparatus |
| 07/01/2009 | CN101470140A 220V power supply monitoring energy-saving technology |
| 07/01/2009 | CN101470139A Transistor circuit and control method thereof |
| 07/01/2009 | CN101470138A Current sampling method and circuit |
| 07/01/2009 | CN101470137A Electric field spark detection circuit of electrostatic precipitator |
| 07/01/2009 | CN100507582C Input buffer and method for voltage level detection |
| 07/01/2009 | CN100507581C Forging press workpiece-deficient detecting method |
| 07/01/2009 | CN100507579C Method and device for measuring voltage |
| 06/30/2009 | US7555366 Thermal overload protection |
| 06/30/2009 | US7554317 Critical current testing techniques for superconducting conductors |
| 06/25/2009 | WO2009077230A1 Method for measuring an alternating voltage and corresponding measuring circuit |
| 06/25/2009 | US20090160428 Overcurrent detection device |
| 06/25/2009 | US20090160425 Multi-Test Circuit Interrupter Tester |
| 06/25/2009 | DE102008055807A1 Verfahren und Vorrichtung zum Überwachen eines Messsystems für elektrischen Strom Method and device for monitoring a system for measuring electric current |
| 06/25/2009 | DE102007061729A1 Verfahren zur Erkennung eines elektrischen Fehlers in einem elektrischen Netzwerk eines Kraftfahrzeugs Method for detecting an electrical fault in an electric network of a motor vehicle |
| 06/25/2009 | DE102007060948A1 Verfahren zum Messen einer Wechselspannung sowie entsprechende Messschaltung A method for measuring an AC voltage and the corresponding measuring circuit |
| 06/25/2009 | DE102007049528B4 Verfahren und Vorrichtung zur Messung von Zellenspannungen in einer Mehrzahl von in Reihe geschalteten Akkumulatorzellen Method and apparatus for measuring cell voltages in a plurality of series-connected battery cells |
| 06/24/2009 | EP2073384A2 Method and apparatus for time-differential comparison of an analog signal |
| 06/24/2009 | EP1996953B1 Measuring device and measuring method for measuring the power envelope and the average power |
| 06/24/2009 | EP0900418B1 Method and apparatus for sensing current in power supplies |
| 06/24/2009 | CN201262633Y Test device against LGA775 platform output voltage |
| 06/24/2009 | CN101464478A Voltage fluctuation flickering measurement method based on digital synchronization carrier wave coherent demodulation technology |
| 06/24/2009 | CN101464477A Micro-current detection method and device in great current interference surroundings |
| 06/24/2009 | CN100504409C Automatic test method for maximum output voltage, current and power of electrical equipment |
| 06/23/2009 | US7552006 Vehicle-use battery monitor apparatus |
| 06/23/2009 | US7550959 Power supply device and switching power supply device |
| 06/21/2009 | CA2646838A1 Fiber optic current sensor and method for sensing current using the same |
| 06/18/2009 | US20090153179 Circuit arrangement for balancing a resistance circuit |
| 06/18/2009 | US20090153153 Multiaperture sample positioning and analysis system |
| 06/18/2009 | US20090153133 Methods and apparatus for collecting characteristics of a power line a bpl system |
| 06/18/2009 | US20090153131 Current Detecting Circuit |
| 06/18/2009 | US20090153129 Method and system for determining a network structure or layout of at least a part of an electricity transport network |
| 06/17/2009 | EP2069804A1 Electronic monitoring of the wiring loom of a motor vehicle for voltage peaks or voltage dips |
| 06/17/2009 | EP1859290A4 Method, system and apparatus for diagnostic testing of an electrochemical cell stack |
| 06/17/2009 | CN201259517Y Current sensor for measuring electric potential distribution ununiformity of lightning arrestor |
| 06/17/2009 | CN101458275A High temperature resistant three phase intermediate frequency electric quantity acquisition module |
| 06/17/2009 | CN101458274A Current acquisition method at low speed segment of permanent magnet synchronous machine of compressor |
| 06/17/2009 | CN101458273A Sensor for measuring very fast transient overvoltage in GIS |
| 06/17/2009 | CN101458272A Low electromagnetic noise current parameter tester |
| 06/17/2009 | CN100502546C Motor current test method |
| 06/17/2009 | CN100501420C AC current sensor and method thereof, power supply using the AC current sensor |
| 06/17/2009 | CN100501419C Neutral-point earth-free distributing network direct-to-ground capacitance current measuring method |
| 06/17/2009 | CN100501418C Distribution network earth fault current measuring method |
| 06/17/2009 | CN100501417C Equipment and method for measuring current |
| 06/16/2009 | US7548822 Apparatus and method for determining the slew rate of a signal produced by an integrated circuit |
| 06/16/2009 | US7548029 Bi-directional current sensing by monitoring VS voltage in a half or full bridge circuit |
| 06/11/2009 | WO2009071430A1 Filtering arrangement, filtering method and current sensing arrangement |
| 06/11/2009 | WO2003046918A3 High performance semiconductor memory devices |
| 06/11/2009 | US20090147555 Systems and methods involving thyristors |
| 06/11/2009 | US20090146671 Current sensing on a MOSFET |
| 06/11/2009 | US20090146644 Electric meter having a detachable measuring bar |
| 06/11/2009 | US20090146643 Methods and apparatus for current sensing |
| 06/10/2009 | EP2068445A1 Filtering arrangement, filtering method and current sensing arrangement |
| 06/10/2009 | EP2068158A2 Apparatus for measuring load current |
| 06/10/2009 | EP1390766B1 14/42-volt automotive circuit tester |
| 06/10/2009 | DE102007058314A1 Vorrichtung zum Messen eines Laststroms An apparatus for measuring a load current |
| 06/10/2009 | DE102007056581A1 Electrical load i.e. motor vehicle blower motor, controlling device, has connection elements brought out from housing, and chip and resistance element, which are electrically connected by connection elements |
| 06/10/2009 | CN101454678A Method and device for demodulation of signals |
| 06/10/2009 | CN101452017A Full automatic over current protection test system and method |
| 06/10/2009 | CN101452016A Electric voltage temporary drop detecting method and apparatus |
| 06/10/2009 | CN100498347C Three state polarization detection method for eliminating linear birefringence influence of optical current transformer |
| 06/09/2009 | US7545180 Sense amplifier providing low capacitance with reduced resolution time |
| 06/09/2009 | US7545135 Electrical service disconnect in a modular meter |
| 06/04/2009 | WO2009068619A2 Circuit arrangement for dc/dc converters in particular and method for the control thereof |
| 06/04/2009 | US20090140723 Method and apparatus for reducing induction noise in measurements made with a towed electromagnetic survey system |
| 06/04/2009 | US20090140722 Measurement signal processing |
| 06/04/2009 | US20090140720 Method for identifying electronic circuits and identification device |
| 06/04/2009 | US20090140662 Circuit Arrangement Having a Transformation Apparatus and Operating Method for a Lamp Using a Circuit Arrangement Having a Transformation Apparatus |
| 06/04/2009 | DE102007058226A1 Measurement of high frequency electrical charging pulses, for analysis of a sample composition using neutron pulses, has a rapid charging amplifier to give the thermal neutron flow density |
| 06/04/2009 | DE10023048B4 Wechselspannungsdedektor Wechselspannungsdedektor |
| 06/03/2009 | EP2066017A1 Method of operating a wind energy system with a voltage-dependent control for an electric reactive quantity to be provided |
| 06/03/2009 | EP2065714A2 Comparing method and device for analog-to-digital conversion method, analog-to-digital converter, semiconductor device for detecting distribution of physical quantity |
| 06/03/2009 | EP1108217B1 Methods and apparatus for controlling data flow in electricity meter |
| 06/03/2009 | CN201251599Y Microcomputer universal measuring meter of power high-voltage divider |
| 06/03/2009 | CN201251598Y Multifunctional household battery voltage measurer |
| 06/03/2009 | CN201251597Y Current indicator |
| 06/03/2009 | CN201251596Y Anti-theft electric pulse type precise current transformer combination |
| 06/03/2009 | CN201251595Y Speech-broadcasting direct current voltmeter |
| 06/03/2009 | CN101446603A Distributed multifunctional integral measurement method for electric power system |
| 06/03/2009 | CN101446602A Voltage change ratio detector |