Digitizing power meter

Details Digitizing power meter Digitizing power meter

1990-02-07

1992-07-21

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

364483, G01R 2106

Patent

active

051326108

ABSTRACT:
A digitizing power meter for measuring voltage and current's root-mean-square, average power and power factor, which includes a voltage detector circuit and a current detector circuit to measure voltage and current analog signal; a phase-lock circuit, a voltage Sampling/Holding circuit, a current Sampling/Holding circuit, a trigger circuit, a voltage A/D converter and a current A/D converter to convert analog signal to measure to digital signal; and a digital processing circuit to accurately measure out voltage and current's root-mean-square, average power and power factor by means of the operation of its microprocessor.

REFERENCES:
patent: 4126825 (1978-11-01), Houston et al.
patent: 4217545 (1980-08-01), Kusui et al.

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