Title :
Magnetic shielding effectiveness for comparators
Author :
Ren, Shiyan ; Ding, Hengchun ; Li, Mingming ; She, Shengneng
Author_Institution :
Dept. of Electr. Eng., Univ. of Sci. & Technol., Wuhan, China
fDate :
4/1/1995 12:00:00 AM
Abstract :
A method of analyzing and calculating magnetic shielding effectiveness of comparators by means of a long rectangular shell model with a magnetic core is developed. A calculation formula is derived. The error between testing results and calculation data for the magnetic shielding effectiveness of a 25000-A dc comparator is less than 5%. The important design bases for magnetic shielding of comparators are given
Keywords :
current comparators; electric current measurement; magnetic cores; magnetic shielding; 25000 A; calculation data; calibration; comparators; dc comparator; error; long rectangular shell model; magnetic core; magnetic shielding effectiveness; measurement; testing results; Frequency estimation; Linearity; Magnetic analysis; Magnetic cores; Magnetic flux; Magnetic shielding; Permeability; Shape; Testing; Toroidal magnetic fields;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
