FIELD: electrical and magnetic measurements for chemical and metal-working industries. SUBSTANCE: we propose determining distribution of magnetic field strength along integration circuit, expanding it into Fourier series, and evaluating weight of each harmonic of this series relative to DC component in order to find number n of points for measuring magnetic field strength of current under measurement using total digital current law. For coinciding weight of k harmonic and specified methodical current-measurement error n is assumed to equal k. EFFECT: enhanced current measurement accuracy. 3 dwg
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