| Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609) |
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| 05/28/1985 | US4520311 Current to pulse-sequence transducer |
| 05/14/1985 | CA1187139A1 Electronic watt transducer with constant d.c. current output proportional to watts |
| 05/07/1985 | US4516213 Multiple rate metering system |
| 05/07/1985 | CA1186740A1 Electronic watt and watthour meter having analog and digital outputs with automatic error correction |
| 04/30/1985 | US4514686 Power transducer |
| 04/30/1985 | US4514685 Integrating circuit for use with Hall effect sensors having offset compensation means |
| 04/24/1985 | EP0137942A1 Electronic electricity meter with automatic measuring range extension |
| 04/23/1985 | US4513382 Electric utility automated distribution apparatus with improved data display |
| 04/16/1985 | US4511979 Programmable time registering AC electric energy meter having randomized load control |
| 04/16/1985 | CA1185661A1 Wattmeter |
| 04/09/1985 | US4510482 Protective circuit for electronic test probes |
| 04/03/1985 | EP0019621B1 Process for measuring electric power |
| 04/02/1985 | US4509128 Solid-state electrical-power demand register and method |
| 03/13/1985 | EP0134001A1 Electronic electric-energy meter with automatic offset regulation |
| 03/12/1985 | US4504787 Electronic watthour meter |
| 02/28/1985 | WO1985000894A1 Switching arrangement in a static kwh meter |
| 02/28/1985 | WO1985000893A1 Pulse width-pulse height multiplicator in a static kwh meter |
| 02/19/1985 | US4500973 Electronic devices |
| 02/19/1985 | US4500870 Method and components for remote reading of utility meters |
| 02/14/1985 | WO1985000711A1 Power metering system and method |
| 02/13/1985 | EP0037414B1 Method and apparatus for testing survival radios |
| 02/12/1985 | CA1182529A1 Measuring output energy by squaring prepulse and postpulse capacitor voltage |
| 02/05/1985 | US4498138 Electronic watt/var transducer |
| 01/29/1985 | US4496901 Electroexplosives, rf power safety margin measurement method |
| 01/29/1985 | CA1181849A1 Vector kva meter |
| 01/22/1985 | US4495463 Electronic watt and/or watthour measuring circuit having active load terminated current sensor for sensing current and providing automatic zero-offset of current sensor DC offset error potentials |
| 01/08/1985 | CA1180760A1 High accuracy ac electric energy metering system |
| 01/01/1985 | US4491793 Detachable magnetic coupler communication apparatus |
| 01/01/1985 | US4491792 Sensing switch for a magnetically coupled communications port |
| 01/01/1985 | US4491791 Sensing switch for a detachable communications probe |
| 01/01/1985 | US4491790 Electric energy meter having a mutual inductance current transducer |
| 01/01/1985 | US4491789 Electrical energy meter having a cover-mounted time-of-day multifunction register |
| 12/27/1984 | EP0129454A1 Process and device for measuring the autonomy of a chopped power supply |
| 12/18/1984 | USRE31774 Measuring system |
| 12/18/1984 | US4489384 Electro-optical sensor for watt-hour meter |
| 12/04/1984 | US4486707 Gain switching device with reduced error for watt meter |
| 12/04/1984 | US4486706 Power flow direction detector |
| 11/28/1984 | EP0028625B1 Bidirectional integrator |
| 11/27/1984 | US4485343 Electronic watt and watthour meter having analog and digital outputs with automatic error correction |
| 11/27/1984 | CA1178686A1 Line protocol for communication system |
| 10/09/1984 | US4476535 System for monitoring, transmitting and conditioning of information gathered at selected locations |
| 10/02/1984 | US4475081 Electronic watthour meter |
| 08/21/1984 | US4467434 Solid state watt-hour meter |
| 08/21/1984 | CA1173157A1 Time division multiplier transducer with digitally derived phase shift adjustment for reactive power and energy measurement |
| 08/14/1984 | US4466074 Power outage timer |
| 08/14/1984 | US4465970 Method and apparatus for multiple rate metering of electrical energy |
| 08/07/1984 | US4464629 Hall element device |
| 07/31/1984 | US4463311 Electronic electric-energy meter |
| 07/25/1984 | EP0114094A2 Microwave thermographic apparatus |
| 07/18/1984 | EP0113463A1 Electrical device for detecting power delivered to a resistive load |
| 07/17/1984 | CA1171137A1 Energy utilization or consumption recording arrangement and method |
| 07/10/1984 | US4459546 Electronic kilowatthour meter |
| 07/03/1984 | EP0101727A4 Multi-function electricity metering method. |
| 06/26/1984 | US4456878 Electronic watthour meter |
| 06/20/1984 | EP0007954B1 Quantity converting and indicating apparatus |
| 06/14/1984 | EP0076809A4 Multiple rate electrical energy metering apparatus. |
| 06/12/1984 | US4454471 Electronic arrangement for determination of reactive power |
| 05/30/1984 | EP0109644A2 Measuring instrument |
| 05/30/1984 | EP0049276B1 Terminal unit for automatic meter reading system |
| 05/29/1984 | US4451784 Electronic watt transducer circuit with constant DC current output proportional to watts |
| 05/15/1984 | CA1167532A1 Power sensing in a microwave oven |
| 05/09/1984 | EP0107996A1 Electronic counter for measuring active and reactive energy in a three-phase power system |
| 05/08/1984 | CA1167109A1 Summing watt-hour transducer |
| 05/08/1984 | CA1167108A1 Detection of tampering of kilowatt-hour meters for measuring electrical energy consumption |
| 05/02/1984 | EP0107466A2 A product-accessing system |
| 04/24/1984 | CA1166315A1 Electronic kilowatt-hour meter for measuring electrical energy comsumption |
| 04/10/1984 | US4442492 Device for central reading and registration of customers' power consumption |
| 04/10/1984 | CA1165419A1 Remote metering system |
| 04/04/1984 | EP0104999A2 Gain switching device with reduced error for watt meter |
| 04/04/1984 | EP0104998A2 Quasi-asynchronous sampling method and system |
| 04/04/1984 | EP0104748A1 RF Watt meter |
| 03/27/1984 | US4439764 Dual mode meter reading apparatus |
| 03/13/1984 | US4437059 Wattmeter |
| 03/07/1984 | EP0101727A1 Multi-function electricity metering method. |
| 03/06/1984 | US4435653 In-phase voltage elimination circuit for Hall element |
| 02/28/1984 | US4434400 Circuit for supervising an electronic electricity meter |
| 02/28/1984 | CA1162988A1 Power measurement transducer |
| 02/14/1984 | US4431965 Microwave radiation monitor |
| 02/14/1984 | US4431951 Resistance thermal unit for thermal electric energy demand meter |
| 02/14/1984 | CA1162301A1 Time division multiplier transducer with selective phase shift |
| 02/08/1984 | EP0100103A1 A pulse width modulation circuit and an analog product forming integration circuit using such modulation circuit |
| 02/08/1984 | EP0100102A1 Circuit for integrating an analog signal and converting it into a digital signal |
| 01/25/1984 | EP0099043A2 System for the control of electric energy consumption, preferably domestic |
| 01/10/1984 | CA1160295A1 Temperature compensation system for hall effect element |
| 01/03/1984 | US4424483 Microwave radiation monitor |
| 12/13/1983 | US4420721 Electricity meters |
| 11/15/1983 | US4415853 Monitoring device and method for accurately determining and recording present demand of electrical energy |
| 11/15/1983 | CA1157123A1 Automatic meter reading and control system |
| 11/15/1983 | CA1157122A1 Automatic meter reading and control system |
| 11/01/1983 | US4413230 Electric energy meter having a mutual inductance current transducer |
| 10/18/1983 | CA1155498A1 Peak detection and electronic compensation of d.c. saturation magnetization in current transformers used in watt hour meter installations |
| 10/11/1983 | US4409545 Electronic measuring device for a polyphase network, in particular for the measurement of power |
| 10/11/1983 | US4409544 Instruments for measurement of carrier power and antenna impedance in AM broadcasting |
| 10/04/1983 | US4408283 Time division multiplier transducer with digitally derived phase shift adjustment for reactive power and energy measurement |
| 09/20/1983 | US4405987 Measuring processes and apparatus for determining tariff values for energy consumers |
| 09/01/1983 | WO1983003011A1 Multi-function electricity metering transducer |
| 08/30/1983 | US4402059 Load management terminal |
| 08/30/1983 | US4401943 Electrical efficiency meter |
| 08/23/1983 | CA1152569A1 Ac electric energy meter utilizing a counter as an integrator |
| 08/23/1983 | CA1152564A1 Electroexplosives, rf power safety margin measurement method |