Method of indicating and/or recording electrical quantities and

Details Method of indicating and/or recording electrical quantities and Method of indicating and/or recording electrical quantities and

1974-07-05

1976-07-20

Rolinec, R. V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Balancing

318685, 324120, G01R 1706, G01R 1926

Patent

active

039709310

ABSTRACT:
A method and an apparatus are described for indicating and/or recording electrical quantities, the desired and actual values being converted into pulses whose repetition frequencies are proportional to the actual and desired quantities. The difference between the two pulse frequencies controls a stepping motor, whose shaft drives the indicating or recording element.

REFERENCES:
patent: 3094875 (1963-06-01), Fluegel
patent: 3228025 (1966-01-01), Welch
patent: 3418547 (1968-12-01), Dudler
patent: 3619757 (1971-11-01), Ioeger

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