Apparatus for measuring electrical power

Details Apparatus for measuring electrical power Apparatus for measuring electrical power

1979-11-02

1981-09-22

Wise, Edward J.

Boots, shoes, and leggings

324142, G01R 1132

Patent

active

042913772

ABSTRACT:
An apparatus for measuring a.c. power which subtracts an average value of current and voltage from sampled instantaneous current and voltage values, respectively. The resultant current and voltage values are multiplied, so as to obtain a power measurement substantially free of any sampling errors and any d.c. levels.

REFERENCES:
patent: 3510772 (1970-05-01), Luthi
patent: 3517311 (1970-06-01), Wasielewski et al.
patent: 3775683 (1973-11-01), Barta et al.
patent: 3778608 (1973-12-01), Richman
patent: 4050025 (1977-09-01), Gerber
patent: 4080568 (1978-03-01), Funk
A Standard Digital Energy Meter for Measurements in Single-Phase Circuits and of Active and Reactive Energy in Symmetrical Three-Phase Circuits, Sacerdoti, et al, Alta Freuenza, vol. 35, No. 11, pp. 889-898.

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