NASA NTRS · 19930000071
Nulling Hall-Effect Current-Measuring Circuit
Abstract
Circuit measures electrical current via combination of Hall-effect-sensing and magnetic-field-nulling techniques. Known current generated by feedback circuit adjusted until it causes cancellation or near cancellation of magnetic field produced in toroidal ferrite core by current measured. Remaining magnetic field measured by Hall-effect sensor. Circuit puts out analog signal and digital signal proportional to current measured. Accuracy of measurement does not depend on linearity of sensing components.
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Sullender, Craig C., Vazquez, Juan M., Berru, Robert I.. 1993-02-01. Nulling Hall-Effect Current-Measuring Circuit. https://ntrs.nasa.gov/citations/19930000071
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