Combined watt and var transducer

Details Combined watt and var transducer Combined watt and var transducer

1976-09-27

1977-10-25

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

G01R 2106

Patent

active

040558037

ABSTRACT:
A transducer provides simultaneous indications of watts and vars when connected to a power line. For a single phase power line the transducer utilizes an internal power supply and, in addition, one current transformer, one voltage transformer, one modulator and suitable electronic switches, filters and voltage to current amplifiers.

REFERENCES:
patent: 3084863 (1963-04-01), DuVall
patent: 3955138 (1976-05-01), Milkovic
patent: 3959724 (1976-05-01), Chana et al.

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