Solid state electricity meter display

Details Solid state electricity meter display Solid state electricity meter display

1986-04-11

1987-08-11

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

340657, 340789, 34087002, 364483, 364518, G01R 2106, G01R 1300

Patent

active

046864601

ABSTRACT:
In a solid state electricity meter, a display consisting of a number of juxtaposed display elements provides, in a vector form, an indication of the direction and range of power flow in the line being measured. Circuitry for driving the vector display comprises a first memory storing a plurality of power measurement references and a second memory storing corresponding vector symbols. A microprocessor compares each power measurement with the reference stored in the first memory to determine the range of power measurement and, in response, reads the corresponding vector symbol from the second memory to drive the display.

REFERENCES:
patent: 4283772 (1981-08-01), Johnston

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