| Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609) |
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| 08/01/1995 | US5438258 Power multiplication circuit which reduces an offset voltage of a Hall element to zero |
| 07/25/1995 | US5437040 Electronic system with variable threshold power failure signaling |
| 07/20/1995 | WO1995019573A1 Measuring process for measuring chargeable electrical consumption from an electrical network and electronic electricity meter |
| 07/18/1995 | US5434537 Circuit for measuring the output power from an amplifier |
| 07/06/1995 | WO1995018383A1 High frequency power measurement |
| 07/06/1995 | CA2177173A1 High frequency power measurement |
| 06/28/1995 | EP0671009A4 Programmable electrical energy meter and methods therefor. |
| 06/28/1995 | EP0660120A1 A method for the digital electronic measurement of periodic electrical quantities, and an instrument for the implementation of such a method |
| 06/27/1995 | US5428351 Method and apparatus for sharing passwords |
| 06/22/1995 | WO1995009473A3 Distribution automation system using medium and low voltage distribution power lines as two-way data transmission media |
| 06/20/1995 | US5426360 Secondary electrical power line parameter monitoring apparatus and system |
| 06/14/1995 | DE4421789A1 Electricity meter |
| 06/06/1995 | US5422595 Miniature, low cost power amplifier monitor |
| 06/06/1995 | US5422567 High frequency power measurement |
| 05/31/1995 | EP0655821A2 Executing a command in electrical metering devices |
| 05/30/1995 | US5420799 Circuit breaker - associated backpack unit for lower-link communication with a PC computer monitoring system and energy monitoring system using a plurality of such backpack units |
| 05/23/1995 | US5418449 Device for the detection of power at the output of an electronic circuit |
| 05/23/1995 | US5418448 Diode detector |
| 05/23/1995 | US5418428 Waveguide system with support for magnetrons |
| 05/17/1995 | EP0653070A1 High speed power analyzer |
| 05/11/1995 | WO1995012911A1 System for supplying power to a consumer's electrical devices and equipment and the like |
| 05/09/1995 | US5414349 Electronic watthour meter |
| 04/20/1995 | WO1995010782A1 Energy distributing system |
| 04/20/1995 | WO1995010781A1 Electronic measurement device |
| 04/19/1995 | CN1101717A Distribution and changing high voltage meter without high voltage mutual inductor |
| 04/11/1995 | US5406495 Substation load distribution monitor system |
| 04/11/1995 | US5406071 Optically isolated pulse width modulation metering |
| 04/06/1995 | WO1995009473A2 Distribution automation system using medium and low voltage distribution power lines as two-way data transmission media |
| 04/06/1995 | CA2170624A1 Distribution automation system using medium and low voltage distribution power lines as two-way data transmission media |
| 03/29/1995 | EP0645636A1 Electronic watthour meter |
| 03/29/1995 | CN1100811A Method for measuring pulse width modulated power for dc motor and converting device |
| 03/29/1995 | CN1028056C 智能电力计量装置 Smart electricity metering devices |
| 03/22/1995 | EP0644433A1 Electronic watthour meter |
| 03/22/1995 | EP0644431A1 Electronic watthour meter |
| 03/22/1995 | EP0644430A1 Static kwh meter |
| 03/22/1995 | EP0644429A2 Three-phase-three-conductors current meter with three measuring systems |
| 03/22/1995 | EP0643841A1 System and process for the measurement of the electric energy consumption of a plurality of consumers |
| 03/21/1995 | US5399963 Method and apparatus for calibration of an electricity meter |
| 03/16/1995 | DE4329103A1 Method for state estimation of electrical power transmission networks |
| 03/08/1995 | CN1027836C Power factor-voltage convertor |
| 03/07/1995 | US5396447 Multiplier circuit and method of operation therefor |
| 03/01/1995 | CA2105095A1 Electricity cost monitor |
| 02/21/1995 | US5391983 Solid state electric power usage meter and method for determining power usage |
| 02/15/1995 | EP0638786A1 Output circuit for a counter, in particular for a heat meter |
| 02/02/1995 | DE4321037A1 Method for detecting (measuring) and transmitting measured values, using an information-processing system, and device for carrying out the method |
| 01/25/1995 | EP0635726A2 Power calculating device |
| 01/24/1995 | US5384712 Energy monitoring system for a plurality of local stations with snapshot polling from a central station |
| 01/18/1995 | EP0634662A1 Electronic watt-hour meter |
| 01/18/1995 | CN1027470C Integrated poly-phase power meter |
| 01/10/1995 | US5381086 Wide power range radiation monitor |
| 01/05/1995 | WO1995000994A1 Electric supply control |
| 01/05/1995 | CA2165804A1 Electric supply control |
| 01/04/1995 | CN1027323C Data acquisition systems with programmable bit-serial digitals ignal processors |
| 01/03/1995 | US5378875 Microwave oven with power detecting device |
| 12/28/1994 | CN1096894A Data acquisition systems with programmable bit-serial digital signal processors |
| 12/27/1994 | US5376880 Method and apparatus for measuring the average power in an electric signal |
| 12/14/1994 | EP0628828A1 Appliance for measuring and counting electrical energy |
| 12/13/1994 | US5373237 Radio frequency power measurement system |
| 12/13/1994 | US5372482 Detection of rod pump fillage from motor power |
| 12/08/1994 | DE4403642C1 Method for measuring active power and measuring device therefor |
| 12/07/1994 | EP0627630A2 Differential current sensing method and apparatus |
| 12/07/1994 | EP0627084A1 Method and apparatus for measuring voltage |
| 12/07/1994 | EP0627083A1 Method and apparatus for electronic meter testing |
| 12/06/1994 | US5371511 Method for approximating the notion of a rotatable disk of an electrical energy meter |
| 12/06/1994 | US5370458 Monolithic microwave power sensor |
| 11/29/1994 | US5369356 Distributed current and voltage sampling function for an electric power monitoring unit |
| 11/16/1994 | CN1095200A Modulated dither signal |
| 11/16/1994 | CN1095162A Differential current sensing method and apparatus |
| 10/19/1994 | EP0620444A1 Measurement wiring for measurement apparatuses intended for measurements of energy in a three-phase network |
| 10/19/1994 | EP0620443A1 Wide power range electromagnetic radiation detector |
| 10/12/1994 | EP0607257A4 Solid state electric power usage meter and method for determining power usage. |
| 10/08/1994 | CA2120451A1 Differential current sensing method and apparatus |
| 10/05/1994 | EP0618452A1 An average power detector circuit |
| 10/05/1994 | EP0618451A1 Current transducer particularly for an electronic electricity meter |
| 10/05/1994 | CN1093171A Method and instrument for monitoring subsynchronous oscillation of electrical power system |
| 10/05/1994 | CN1026160C High-precision pulse power measurement and equipment |
| 09/29/1994 | WO1994022024A1 Power meter |
| 09/29/1994 | WO1994022023A1 Improved power meter |
| 09/29/1994 | DE4409820A1 Determining the state of filling of a rod pump from the motor output |
| 09/24/1994 | CA2119905A1 Detection of rod pump fillage from motor power |
| 09/21/1994 | EP0616292A1 Multiplier circuit with resistor networks and an electric energy meter incorporating such a circuit |
| 09/20/1994 | US5349676 Data acquisition systems with programmable bit-serial digital signal processors |
| 09/15/1994 | WO1994020860A1 Current transformer, in particular a current transformer for an electronic electricity meter |
| 09/13/1994 | CA2010100C Method and apparatus for measuring ac power |
| 09/07/1994 | CN1091834A Compensation method for increasing metering precision of electronic watt-hour meter |
| 09/01/1994 | WO1994019899A1 Remote automatic meter reading apparatus |
| 08/31/1994 | EP0613256A1 AD converter with modulated dither signal |
| 08/27/1994 | CA2116157A1 Modulated dither signal |
| 08/24/1994 | EP0612081A1 Resistive current measuring elements and connection- and measure modules |
| 08/17/1994 | EP0611100A1 Circuit for measuring the output power from an amplifier |
| 08/16/1994 | US5339066 Energy-measuring resistor bank |
| 08/10/1994 | EP0419452B1 A method in alarm system, including recording of energy consumption |
| 08/09/1994 | US5336991 Apparatus and method for measuring electrical energy and quadergy and for performing line frequency compensation |
| 08/03/1994 | CN1090393A Digital three-phase wattmeter |
| 07/27/1994 | EP0607714A1 Multiple stage frequency modulated circuit |
| 07/27/1994 | EP0607712A1 Frequency modulated integrator circuit |
| 07/27/1994 | EP0607711A1 Electricity meter with variable gain sigma-delta converter |
| 07/27/1994 | EP0607257A1 Solid state electric power usage meter and method for determining power usage |
| 07/21/1994 | WO1994016334A1 Electronic watt-hour meter |
| 07/13/1994 | CN1089358A Wide band flat power detector |