Electric current sensors: a review
Identifieur interne : 000633 ( Main/Exploration ); précédent : 000632; suivant : 000634Electric current sensors: a review
Auteurs : Pavel Ripka [République tchèque]Source :
- Measurement Science and Technology [ 0957-0233 ] ; 2010.
Abstract
The review makes a brief overview of traditional methods of measurement of electric current and shows in more detail relatively new types of current sensors. These include Hall sensors with field concentrators, AMR current sensors, magneto-optical and superconducting current sensors. The influence of the magnetic core properties on the error of the current transformer shows why nanocrystalline materials are so advantageous for this application. Built-in CMOS current sensors are important tools for monitoring the health of integrated circuits. Of special industrial value are current clamps which can be installed without breaking the measured conductor. Parameters of current sensors are also discussed, including geometrical selectivity. This parameter specific for current sensors means the ability to suppress the influence of currents external to the sensor (including the position of the return conductor) and also suppress the influence on the position of the measured conductor with respect to the current.
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DOI: 10.1088/0957-0233/21/11/112001
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