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Nulling Hall-Effect Current-Measuring CircuitCircuit 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.
Document ID
19930000071
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Sullender, Craig C. (Rockwell International Corp.)
Vazquez, Juan M. (Rockwell International Corp.)
Berru, Robert I. (Rockwell International Corp.)
Date Acquired
August 16, 2013
Publication Date
February 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 2
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
LEW-15023
Accession Number
93B10071
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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