Electricity cost monitor

Details Electricity cost monitor Electricity cost monitor

G - Physics

01

R

G01R 21/06 (2006.01) G01R 21/133 (2006.01) G01R 22/00 (2006.01)

Patent

CA 2105095

Abstract of the Disclosure A method and apparatus for real time monitoring of power consumption of various loads by an end user utilizes conventional current and voltage measuring means to determine instantaneous power consumption, and a computer displays these values to the user, as well as recent historical values over a selcted period of time. In a preferred embodiment of the invention a relatively few number of samples are taken per cycle, the samples being distributed such that over a selected number of cycles the samples cover the entire waveform cycle equally. An average instantaneous power determination is then calculated over the sampling interval and displayed on the computer.

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