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Luciano, B., Batista, T., Freire, R., Guerra, F. and de Castro, W. (2012) Current Transformers with Nanocrystalline Alloy Toroidal Core: Analytical, Computational and Experimental Studies. Materials Research, 15, 805-808.
http://dx.doi.org/10.1590/S1516-14392012005000051

has been cited by the following article:

• TITLE: Toroidal Coil in Measuring Alternating Current at a Distance

  AUTHORS: Seppo Mäkinen

  KEYWORDS: Rogowski Coil, Current Transformer, Toroidal Coil, Electromagnetic Induction

  JOURNAL NAME: Journal of Electromagnetic Analysis and Applications, Vol.6 No.12, October 13, 2014

  ABSTRACT: This article discusses the use of a toroidal coil in measuring alternating current from a straight current-carrying wire passing perpendicularly through the coil. The sinusoidally oscillating current generates a sinusoidally oscillating magnetic field in its vicinity. This, in turn, induces a sinusoidally oscillating emf in the toroid. This (measured) emf can be used in order to calculate the magnitude of the electric current in the wire. The use of such technique might be sensitive to the location of the point at which the wire passes through the toroid. If the location is not known very precisely, this might cause errors in the value of the calculated current. We wanted to study if the result does not depend on the location of the wire at all, as is usually stated, or not. The study was done by deriving a single analytical formula for finding out the calculated current with the wire passing through any given point inside the toroid. This formula was then solved at more than 2300 points inside a toroid to see if the location of the wire affects the result or not.