Circuit arrangement for a meter for measuring two electrical qua

Details Circuit arrangement for a meter for measuring two electrical qua Circuit arrangement for a meter for measuring two electrical qua

1987-05-12

1988-06-07

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

324116, 324103R, G01R 2100, G01R 1132

Patent

active

047499419

ABSTRACT:
A circuit arrangement for the input circuit of a meter for simultaneously measuring two electrical quantities is disclosed. The circuit includes a current transformer including a primary winding, two substantially equal secondary windings and a pulse amplitude modulator associated with each secondary winding. Connections are made from each secondary winding to one terminal of its associated and non-associated pulse amplitude modulators, respectively. The circuit can be manufactured simply and economically while providing a high quality meter. Other embodiments provide additional advantages.

REFERENCES:
patent: 3688232 (1972-08-01), Szatmari
patent: 3875509 (1975-04-01), Milkovic
"Landis & Gyr-Mitteilungen", 32nd year (1985), 1, Tariff Calculators Tarigyr 400, pp. 4-8.

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