| Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609) |
|---|
| 07/12/1994 | US5329468 Actual operating time indicator |
| 07/07/1994 | WO1994015221A1 Process and device for finding the real output of an electric drive |
| 07/06/1994 | EP0604493A1 Method and apparatus for power measuring |
| 07/06/1994 | EP0604492A1 Apparatus and method for calibrating power meters |
| 06/29/1994 | EP0604203A2 Wide band flat power detector |
| 06/28/1994 | US5325064 Wideband flat power detector |
| 06/28/1994 | US5325051 Electronic watthour meter |
| 06/15/1994 | EP0601926A1 Electronic circuit output power detection means |
| 06/15/1994 | EP0601817A1 Power multiplication circuit |
| 06/01/1994 | CN2167377Y Safety Hall type intelligent power electric meter |
| 05/31/1994 | US5317546 Time-of-use calendar events method and apparatus for a meter register |
| 05/31/1994 | US5317250 Modular electronic meter having reduced width |
| 05/26/1994 | DE4236386C1 Monitoring FM radio transmitter - detecting mean power level of modulation multiplex signal to prevent over-modulation |
| 05/25/1994 | EP0598521A2 A commodity consumption meter |
| 05/25/1994 | EP0598520A2 A commodity consumption meter |
| 05/24/1994 | US5315531 For use on an AC line |
| 05/24/1994 | US5315236 Power consumption meter for displaying electric power consumed by appliance and the time period of consumption |
| 05/24/1994 | US5315235 Electrical energy meter with programmable register component |
| 05/18/1994 | CN2165451Y Energy-saving single-phase electronic kilowatt-hour meter |
| 05/18/1994 | CN1086904A Real-time micro computer electric quantity oscillograph |
| 05/17/1994 | CA2043235C Digital power metering |
| 05/10/1994 | US5311117 Meter for accurately measuring integrated electric power |
| 05/10/1994 | US5311068 Solid-state energy meter with time-of-use rate scheduling and load control circuit |
| 04/28/1994 | WO1994009375A1 Power-frequency converter (and variations thereof) |
| 04/26/1994 | US5307009 Instrument for measuring electric power consumed by a power consumer |
| 04/21/1994 | DE4235274A1 Setting-up and operating controllable and non-controllable electrical equipment e.g. lighting - entering facts contg. measured and stored sequence of instantaneous power input values and corresp. energy consumption values and calculating weighting matrix |
| 04/13/1994 | EP0591942A1 Electronic device for measuring such variables as active and reactive power and power factor |
| 04/12/1994 | US5302890 Harmonic-adjusted power factor meter |
| 04/12/1994 | US5302024 Monolithic microwave power sensor using a heat sensing diode junction |
| 04/06/1994 | CN2160916Y Electronic card prepayment digital watt-hour meter |
| 04/05/1994 | US5301122 Measuring and monitoring system |
| 04/05/1994 | US5301121 Measuring electrical parameters of power line operation, using a digital computer |
| 03/30/1994 | EP0589090A1 Signal multiplier device |
| 03/29/1994 | US5298859 Harmonic-adjusted watt-hour meter |
| 03/29/1994 | US5298857 Electrical energy meter with a precision integrator for current measurement |
| 03/29/1994 | US5298856 Harmonic-adjusted power factor meter |
| 03/29/1994 | US5298855 Harmonic-adjusted power factor meter |
| 03/29/1994 | US5298854 Method for measuring electric power consumed |
| 03/11/1994 | CA2077955A1 Energy monitor |
| 03/01/1994 | US5291073 Thermal power sensor |
| 03/01/1994 | CA1327398C Consumption meter |
| 02/22/1994 | US5289191 Bipolar analog-to-digital conversion apparatus with unipolar current and voltage modes |
| 02/22/1994 | US5289133 Power density methods for electroshocking |
| 02/22/1994 | US5289115 Electronic watt-hour meter with selection of time base signals |
| 02/17/1994 | WO1994003818A1 High speed power analyzer |
| 02/02/1994 | CN1023662C Slotic electricity meter |
| 01/25/1994 | US5282108 Surge protector for a watthour meter |
| 01/19/1994 | EP0578948A1 Arrangement for measuring power or current components of an impedance |
| 01/12/1994 | EP0578025A1 Method of measuring the consumption of electrical energy |
| 12/29/1993 | EP0575622A1 Equipment for measuring quantity of electric load, and method and apparatus for using the same |
| 12/14/1993 | US5270949 Method and apparatus for disposing a meter register in a default mode |
| 12/14/1993 | US5270704 Autonomous pulse reading and recording system |
| 12/14/1993 | US5270639 Time of use register for use with a utility meter |
| 12/14/1993 | CA1325244C Electrical energy analyser |
| 12/09/1993 | WO1993024842A1 System and process for the measurement of the electric energy consumption of a plurality of consumers |
| 12/08/1993 | CN1079305A Programmable electric energy meter and methods the refore |
| 12/01/1993 | EP0571889A2 Electric load controlling device |
| 11/30/1993 | US5266910 Directional coupler on mirror elbow for microwaves |
| 11/30/1993 | US5266888 Wide power range radiation monitor |
| 11/24/1993 | CN2147545Y Electric spoon type intelligent electric power meter |
| 11/23/1993 | US5264786 Electrical device for measuring electrical parameters |
| 11/18/1993 | EP0396665B1 Power measurement apparatus |
| 11/16/1993 | US5262715 Arrangement for the measurement of reactive power or reactive energy |
| 11/02/1993 | US5258704 Electronic watthour meter |
| 10/26/1993 | US5256979 Method and apparatus for measuring an unknown voltage, and power meter employing the same |
| 09/28/1993 | US5249150 Process and circuit to determine estimates of the instantaneous value of parameters of at least one sinusoidal signal with constant and known frequency which is an additive component of a measuring signal |
| 09/28/1993 | US5248935 Electronic type watthour meter including automatic measuring-error correcting function |
| 09/22/1993 | CN1076526A Method and apparatus for electronic meter testing |
| 09/15/1993 | EP0560195A2 An actual operating time indicator |
| 09/14/1993 | US5245275 Electronic watthour meter |
| 09/08/1993 | EP0559499A1 A multiplier circuit and method of operation therefor |
| 09/07/1993 | US5243536 Method and apparatus for measuring volt-amps reactive power using synthesized voltage phase shift |
| 09/07/1993 | US5243276 Sampling type measuring device |
| 09/07/1993 | US5243198 Semiconductor resonant tunneling device with thick layer |
| 09/02/1993 | WO1993017390A1 Programmable electrical energy meter and methods therefor |
| 09/02/1993 | WO1993017347A1 Method and apparatus for measuring voltage |
| 09/02/1993 | WO1993017345A1 Method and apparatus for electronic meter testing |
| 08/31/1993 | US5241306 System and method for introducing meter sensor hysteresis |
| 08/25/1993 | CN1075551A Method and apparatus for measuring voltage |
| 08/11/1993 | EP0555141A1 Electronic energy consumption meter |
| 08/11/1993 | EP0554618A2 Electricity meter |
| 08/11/1993 | CN1075212A Launcher for waveguide system |
| 08/04/1993 | EP0554188A1 Device for measuring electrical variables |
| 07/27/1993 | US5231347 Power factor matching in an AC power meter |
| 07/20/1993 | US5229713 Method for determining electrical energy consumption |
| 06/23/1993 | CN1021376C Adjustment circuit and method for solid-state electricity meter |
| 06/16/1993 | CN2136476Y Ac reactive power and electric energy measuring arrangement |
| 06/16/1993 | CN2136475Y High- and low-voltage power metering box |
| 06/14/1993 | WO1993012412A1 Equipment for measuring quantity of electric load, and method and apparatus for using the same |
| 06/14/1993 | CA2103888A1 Electrical load level detector, its usage, and applied devices |
| 06/09/1993 | EP0545394A1 AC/DC transfer-technique for alternating electric values |
| 06/02/1993 | EP0544396A1 Instruments for measuring the frequency and power of a microwave signal |
| 06/01/1993 | US5216623 System and method for monitoring and analyzing energy characteristics |
| 06/01/1993 | US5216357 Real time solid state register having battery backup |
| 05/26/1993 | EP0543365A1 Electronic watthour meter |
| 05/25/1993 | US5214587 Device for monitoring utility usage |
| 05/25/1993 | US5214372 Linearizing circuit for dectection of a RF-power sensor |
| 05/18/1993 | US5212441 Harmonic-adjusted power factor meter |
| 05/12/1993 | EP0540765A1 Circuit generating a clock signal synchronised with the mains |
| 04/20/1993 | US5204614 Broad-band microwave power sensor using diodes above their resonant frequency |