| Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609) |
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| 09/23/2004 | US20040183522 Power line sensors and systems incorporating same |
| 09/23/2004 | US20040183519 Power measurement apparatus and method therefor |
| 09/22/2004 | EP1460437A1 Power measurement apparatus and method therefor |
| 09/22/2004 | CN1531655A Compensation circuit for phase shift electric meters for direct connection |
| 09/21/2004 | US6795781 Method and apparatus for compiler assisted power management |
| 09/21/2004 | US6794881 Arrangement for measuring the root mean square of a power frequency voltage across a large dynamic range, especially for measuring electrical output |
| 09/21/2004 | CA2299002C A-base revenue meter with power quality features |
| 09/16/2004 | US20040181718 Method and apparatus for detecting and correcting wiring errors in power monitoring applications |
| 09/16/2004 | US20040178847 Method and system for monitoring a deliverable radio frequency power of an amplifier operable on a monolithic microwave integrated circuit |
| 09/16/2004 | DE10110626B4 Verfahren und Halbleiterbauteil mit einer Einrichtung zur Bestimmung einer internen Spannung The method and semiconductor device with a device for determining an internal voltage |
| 09/15/2004 | EP1457785A2 Wiring error detector |
| 09/15/2004 | EP1456683A1 Device for measuring the consumption of electrical energy |
| 09/15/2004 | EP1456676A2 System for the remote data acquisition and control of electric energy meters |
| 09/15/2004 | CN1529174A Method for preventing fraudulent use of electricity by three-phase three elements and electricity meter with same |
| 09/14/2004 | US6792364 Revenue meter with power quality features |
| 09/14/2004 | US6792337 Method and system for master slave protocol communication in an intelligent electronic device |
| 09/14/2004 | US6791312 Measuring power of analog signals |
| 09/10/2004 | WO2003055031A9 System for the remote data acquisition and control of electric energy meters |
| 09/08/2004 | CN2639899Y Power energy meter using 1/4 numerical square multiplier |
| 09/08/2004 | CN2639898Y Compact type high-voltage power metering box |
| 09/08/2004 | CN1165774C Method and apparatus for real time measurement of three phase electrical parameters |
| 09/02/2004 | US20040172207 Integrated circuit with power monitoring/control and device incorporating same |
| 08/31/2004 | US6785826 Self power audit and control circuitry for microprocessor functional units |
| 08/31/2004 | US6784806 Electronic electricity meter |
| 08/26/2004 | US20040167810 Computerized management system and method for maintenance performance evaluation and improvement |
| 08/26/2004 | US20040167730 Method of calculating effective power relating to capacitor, method of measuring effective power consumed by capacitor, capacitor selection method, calculation apparatus for calculating effective power relating to capacitor, and recording medium storing the calculation program therefor |
| 08/26/2004 | US20040166826 Method of forming an RF detector and structure therefor |
| 08/24/2004 | US6781361 Apparatus and system for electrical power metering using digital integration |
| 08/19/2004 | WO2004057347A3 Real time power flow method for distribution system |
| 08/19/2004 | US20040162642 Thin client power management system and method |
| 08/18/2004 | CN2634487Y Distribution monitoring terminal |
| 08/11/2004 | EP1444527A2 A method and apparatus for reading and controlling electric power consumption |
| 08/11/2004 | CN1520518A Power detection circuit for use in power amplifier |
| 08/11/2004 | CN1519566A Sensor device, measuring system and calibrating method |
| 08/11/2004 | CN1161622C Multi-ratio load electric power metering device |
| 08/11/2004 | CN1161621C Electric power calculating device |
| 08/05/2004 | US20040150389 Sensor apparatus, measuring system and method of calibration |
| 08/05/2004 | DE19838029B4 Koaxialer HF-Leistungsmeßkopf großer Bandbreite Coaxial RF power sensor high bandwidth |
| 08/05/2004 | DE19720214B4 Leistungserfassungsschaltung Power detection circuit |
| 08/04/2004 | EP1443335A1 Sensor apparatus, measuring system and method of calibration |
| 08/04/2004 | EP1443334A1 HIGH−FREQUENCY DETECTION METHOD AND HIGH−FREQUENCY DETECTION CIRCUIT |
| 08/04/2004 | CN1517715A Power relevance quantity measuring device |
| 08/03/2004 | US6771058 Apparatus and method for the measurement and monitoring of electrical power generation and transmission |
| 07/28/2004 | EP1360512B1 Compensation circuit for the phase shift in electricity meters for direct connection |
| 07/28/2004 | CN1516338A dBm linear high frequency power detector and high frequency electric oscillating power regulating method |
| 07/28/2004 | CN1159591C Reactive power measuring method based on digital filtering |
| 07/27/2004 | US6768382 Circuit and technique for accurate and efficient power amplifier sensing |
| 07/27/2004 | US6767129 Microwave power sensor and method for manufacturing the same |
| 07/27/2004 | US6767128 Electromagnetic wave sensor |
| 07/22/2004 | WO2004061462A1 Power monitoring integrated circuit with communication interface |
| 07/22/2004 | US20040140908 Utility usage rate monitor |
| 07/22/2004 | US20040140818 Circuit and method for determining at least one voltage, current and/or power value for an integrated circuit |
| 07/22/2004 | CA2511004A1 Power monitoring integrated circuit with communication interface |
| 07/21/2004 | CN1514254A Calculating method for effective power of capacitor and method for testing consumed effective power |
| 07/21/2004 | CN1158533C Device for measuring power |
| 07/15/2004 | US20040138787 System and method for implementing XML on an energy management device |
| 07/15/2004 | US20040138786 Method and system for master slave protocol communication in an intelligent electronic device |
| 07/15/2004 | US20040135628 High frequency power detector with dBm-linear characteristic and method of regulating the power of an electrical HF-oscillation |
| 07/13/2004 | US6762598 Method for providing optical test signals for electronic meter testing |
| 07/08/2004 | WO2004057347A2 Real time power flow method for distribution system |
| 07/08/2004 | US20040133367 Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems |
| 07/08/2004 | US20040130333 Rf power measurement |
| 07/08/2004 | DE10260749A1 Hochfrequenz-Leistungsdetektor mit dBm-linearer Kennlinie und Verfahren zur Regelung der Leistung einer elektrischen HF-Schwingung High-frequency power detector with dBm linear characteristic and method for controlling the power of an electric high frequency oscillation |
| 07/07/2004 | EP1435002A1 Apparatus and method for calculating of three-phase power factor |
| 07/07/2004 | CN2624213Y Metering power supply terminal block |
| 07/07/2004 | CN1511266A Energy measuring method and device |
| 07/07/2004 | CN1510425A Semiconductor thermocouple microwave power sensor |
| 07/06/2004 | US6759837 Methods and apparatus for phase compensation in electronic energy meters |
| 06/30/2004 | CN1509410A Utility usage rate monitor |
| 06/30/2004 | CN1155832C Configurable electricity meter |
| 06/24/2004 | DE4329103B4 Verfahren zur Zustandsestimation elektrischer Energieübertragungsnetze Method for Zustandsestimation electrical energy transmission networks |
| 06/24/2004 | DE10255665A1 Measurement circuit for measuring the operating values, especially voltage, current or power of an IC, has a first circuit for measuring sequential states of a reference signal and a second circuit for measuring a clock signal |
| 06/22/2004 | US6753685 Power detector with increased detection range |
| 06/16/2004 | CN1153979C Utility ammeter with display during power interruption |
| 06/16/2004 | CN1153973C Current detector electrical energy meter |
| 06/15/2004 | US6751563 Electronic power meter |
| 06/15/2004 | US6751562 Communications architecture for intelligent electronic devices |
| 06/09/2004 | EP1426777A2 An apparatus for the determination of electrical power |
| 06/09/2004 | CN1153065C Electronic instrument with attached calculating module |
| 06/03/2004 | WO2004047259A2 Power converter circuitry and method |
| 06/03/2004 | US20040107025 System and method for implementing XML on an energy management device |
| 06/03/2004 | US20040105206 Apparatus for metering at least one type of electrical power over a predetermined range of service voltages |
| 06/02/2004 | CN2619266Y Power transformer measuring controller |
| 06/01/2004 | US6745138 Intelligent electronic device with assured data storage on powerdown |
| 06/01/2004 | CA2264796C Automatic meter reading data communication system |
| 05/26/2004 | EP1422532A2 Method and apparatus for determining effective power consumed by a capacitor |
| 05/26/2004 | EP1062482B1 Unit for the bidirectional detection and transmission of data via modern communication networks |
| 05/25/2004 | US6741070 Wide-band RF signal power detecting element and power detecting device using the same |
| 05/25/2004 | CA2266721C Measuring device for electrical power and method for measuring the electrical power |
| 05/20/2004 | US20040095164 Power converter circuitry and method |
| 05/19/2004 | CN1497258A 能量供给系统 Energy supply system |
| 05/18/2004 | US6738693 Multiple virtual meters in one physical meter |
| 05/13/2004 | US20040090220 Measuring circuit arrangement for electricity meters for direct connection |
| 05/13/2004 | DE19723641B4 Hochfrequenz-Leistungsmesser RF power meter |
| 05/11/2004 | US6735535 Power meter having an auto-calibration feature and data acquisition capabilities |
| 05/11/2004 | US6734695 Method and semiconductor component having a device for determining an internal voltage |
| 05/06/2004 | US20040085786 Compensation circuit for the phase shift in electric meters for direct connection |
| 05/06/2004 | EP1415165A1 Modular sensor array, metering device and mounting and connection base |
| 04/29/2004 | WO2004017079A3 Method and apparatus for obtaining power computation parameters |
| 04/29/2004 | WO2002049195A9 Auxiliary metering apparatus and methods |