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The Tweet-a-watt [13] is a hacked version of the standard Kill-A-Watt Plug in Power Meter. By piggybacking on the device's on-board LM2902N op-amp chip, the creator was able to get readings for voltage and current and transmit to a computer, which then sent this to Twitter via handle @tweetawatt. [ 14 ]
Modification of such meters to read standby power has been described and discussed in detail (with oscilloscope waveforms and measurements). [25] Essentially, the meter's shunt resistor, used to generate a voltage proportional to load current, is replaced by one of value typically 100 times larger, with protective diodes. Readings of the ...
It was originally known as a watt balance because the weight of the test mass is proportional to the product of current and voltage, which is measured in watts. In June 2016, two months after the death of its inventor, Bryan Kibble , metrologists of the Consultative Committee for Units of the International Committee for Weights and Measures ...
An electricity meter, electric meter, electrical meter, energy meter, or kilowatt-hour meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device over a time interval. Electric utilities use electric meters installed at customers' premises for billing and monitoring purposes.
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Google PowerMeter logo. Google PowerMeter was a software project of Google's philanthropic arm, Google.org, to help consumers track their home electricity usage. It was launched on October 5, 2009, and ended on September 16, 2011.
They also check out laptops, DVD players, MonoMouses, life jackets, automotive diagnostic scanners, Ready to Read Trunks/Kids' Learning Kits, travel/trail bags, board games/puzzles, binoculars/birding backpacks, seeds, kill-a-watt meters, and telescopes. [13]
The N watt-meters are separately connected such that each one measures the current level in one of the N conductors and the potential level between that conductor and a common point. In a further simplification, if that common point is located on one of the conductors, that conductor's meter can be removed and only N-1 meters are required. An ...