Patents
Sitemap › G01 - Measuring; Testing › G01R - Measuring electric variables; Measuring magnetic variables › G01R 21 - Arrangements for measuring electric power or power factor
Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609)
10/2003
10/02/2003US20030185576 Enhanced accuracy
10/02/2003US20030184280 Power monitoring system
10/01/2003EP1348968A1 Digital circuit for signal power measuring
09/2003
09/30/2003US6629046 Automatic service type recognition in electrical utility meter
09/30/2003US6628114 High linearity, low offset interface for hall effect devices
09/25/2003WO2002103375A3 Integrated power detector with temperature compensation
09/25/2003US20030178985 Electronic revenue meter with automatic service sensing
09/23/2003CA2165929C Circuit interrupter providing protection and waveform capture for harmonic analysis
09/18/2003US20030176984 Signal measurement
09/18/2003US20030176982 Manufacturing integrated circuits and testing on-die power supplies using distributed programmable digital current sinks
09/17/2003CN1121768C Self checking circuit in microwave equipment
09/16/2003US6622097 Method and apparatus for reading and controlling electric power consumption
09/10/2003EP1226443B1 Electromagnetic wave sensor
09/10/2003CN1441255A Method and device for radio frequency metering
09/09/2003US6618684 System and method for digitally compensating frequency and temperature induced errors in amplitude and phase shift in current sensing of electronic energy meters
09/09/2003US6617978 Electricity meter
09/03/2003EP1340311A2 Auxiliary metering apparatus and methods
09/03/2003CN2571086Y Meter reading device using mobile communication short message transmission system for transferring meter information
09/03/2003CN1439883A Automatic eliminating method for self d.c. component in power metering system
09/02/2003US6615147 Revenue meter with power quality features
08/2003
08/28/2003WO2003071296A1 Radio frequency power generation and power measurement
08/28/2003WO2003071292A1 Radio frequency power measurement
08/28/2003US20030160567 Method and apparatus for radio frequency (rf) metrology
08/27/2003EP1339086A2 Method and apparatus for radio frequency (RF) metrology
08/27/2003EP1338122A2 Intelligent appliance home network
08/27/2003CN1119665C Miniature portable microwave high power meter
08/26/2003US6611772 Electronic electricity meter configurable to operate in a plurality of meter forms and ratings
08/21/2003US20030157913 CMOS current mode RF detector and method
08/21/2003US20030155904 Methods and apparatus for power measuring receiver
08/19/2003US6608446 Method and apparatus for radio frequency (RF) metrology
08/14/2003WO2003067270A1 Power detector with constant voltage decoupling
08/14/2003US20030154039 Program, method and apparatus associated with controlling/monitoring panels, involving parameters and display additions
08/13/2003EP1118003A4 Methods and apparatus for defining meter data calculations in an electronic electricity meter
08/13/2003EP1116039A4 Methods and apparatus for updating firmware in an electronic electricity meter
08/13/2003EP1108219A4 Electronic electricity meter including flash memory
08/07/2003WO2003065057A1 Signal processing circuit for an optical sensor
08/06/2003EP1332377A1 Electronic device
08/05/2003CA2344425C System and method for frequency compensation in an energy meter
07/2003
07/31/2003WO2003062838A1 System for managing resource infrastructure and computation in real time
07/31/2003CA2473560A1 System for managing resource infrastructure and computation in real time
07/30/2003CN2563784Y Electric power socket capable of metering consumption number
07/29/2003US6600307 Method and apparatus for measuring true transmitted power using a broadband dual directional coupler
07/29/2003CA2298928C Linear power control loop
07/23/2003CN1115911C Mobile station having drift-free pulsed power detection method and appts.
07/22/2003US6597230 Electronic device
07/22/2003US6597228 Diode-rectifier with non-linear load resistance
07/17/2003US20030135339 System for managing resource infrastructure and resource consumption in real time
07/17/2003US20030132742 Compact intelligent electronic device incorporating transformers
07/08/2003US6590376 Method of deriving a frequency of a pulse signal from alternate sources and method of calibrating same
07/03/2003WO2003055031A2 System for the remote data acquisition and control of electric energy meters
07/03/2003CA2819916A1 System for the remote data acquisition and control of utility meters
07/03/2003CA2471267A1 System for the remote data acquisition and control of electric energy meters
07/02/2003EP1322969A1 Rf power measurement
07/01/2003CA2201299C Graphical display for an energy management device
06/2003
06/26/2003WO2003052537A1 Power reduction measurement system and method
06/26/2003WO2003052447A1 Device for measuring the consumption of electrical energy
06/26/2003US20030120370 Electric power consumer data analyzing method
06/25/2003CN2557955Y Electricity cut off detector for electricity meter
06/19/2003US20030114963 Power reduction measurement system and method
06/19/2003US20030111999 Residential electricity meter
06/18/2003CN1111743C Electronic kilowatt meter and its method
06/17/2003US6581015 Technique and apparatus to control the transient response of a fuel cell system
06/12/2003US20030110380 Multi-featured power meter with feature key
06/10/2003US6577961 Energy meter having programmable functions
06/04/2003EP1230555B1 Arrangement for measuring the root mean square of a power frequency voltage across a large dynamic range, especially for measuring electrical output
06/04/2003CN2554635Y Intelligence power monitoring instrument
05/2003
05/30/2003CA2366731A1 Power monitoring system
05/29/2003US20030101008 Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems
05/29/2003US20030098683 Apparatus and method for the measurement and monitoring of electrical power generation and transmission
05/28/2003EP1314044A2 Active power monitoring using externally located current sensors
05/21/2003CN1419131A Intelligent fraudulent use prevention electric energy measuring method and device thereof
05/15/2003US20030093447 Apparatus and method for detecting energy of tone signal
05/14/2003EP1309874A2 Power sensor
05/14/2003EP0643841B2 System and process for the measurement of the electric energy consumption of a plurality of consumers
05/14/2003CN2550767Y Load sampling circuit for electromagnetic oven
05/14/2003CN1108528C Vector electricity meters and associated vector electricity metering methods
05/13/2003US6564159 Methods and apparatus for defining meter data calculations in an electronic electricity meter
05/08/2003WO2003038454A1 Real-time charging electronic watthour meter
05/08/2003WO2003038453A1 High-frequency detection method and high-frequency detection circuit
05/07/2003CN1416629A Intelligent equipment household netword
05/06/2003US6559631 Temperature compensation for an electronic electricity meter
05/02/2003EP1305643A1 Signal measurement
05/01/2003US20030080725 Wide-band RF signal power decting element and power detecting device using the same
04/2003
04/29/2003US6555997 Electricity meter and an input module for an electricity meter
04/24/2003US20030078742 Determination and applications of three-phase power factor
04/23/2003EP1153304B1 Current probe and electrical energy meter
04/17/2003WO2003031996A1 Apparatus and method for calculating of three-phase power factor
04/17/2003CA2458178A1 Apparatus and method for calculating of three-phase power factor
04/16/2003CN1105919C Opto-electronic voltameter using optical meter
04/16/2003CN1105617C Arc voltage method and system for sensing perforation state of plasma welding's molten bath
04/15/2003US6549867 Power supply feed-forward compensation technique
04/15/2003US6548999 RMS power sensor with 84 dB dynamic range
04/10/2003DE19923984C2 Schaltung und Verfahren zur Erfassung reaktiver Leistung Circuit and method for detecting reactive power
04/09/2003EP1299922A2 Successive log video pad power detector and method
04/09/2003CN1409121A Digital electric power meter
04/09/2003CN1105307C Monitoring device secured to power distribution system conductors
04/03/2003WO2002088761A3 Apparatus and system for electrical power metering using digital integration
04/03/2003US20030065459 Expandable intelligent electronic device
04/02/2003EP1297347A1 Apparatus and method for the measurement and monitoring of electrical power generation and transmission
04/02/2003CN2543071Y Power factor and frequency combined transmitter
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