منابع مشابه
Helicoidal single-layer cylindrical coil self-inductance evaluation: a didactic method
This paper presents a didactic mathematical method to evaluate the self-inductance of a nonmagnetic core single-layer cylindrical and helicoidal coil presenting voids between turns. This type of calculation, using Biot–Savart Law, is not usually presented in the traditional electromagnetic text books, but constitutes an excellent tool to show to the students how to apply the very important Biot...
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Rogowski coils are increasingly used for measurement of AC and transient electric currents. Mostly used Rogowski coils now are with circular or rectangular cores. In order to increase the sensitivity of the measurement of Rogowski coil and perform smooth wire winding, this paper studies the effect of increasing the mutual inductance in order to increase the coil sensitivity by presenting the ca...
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In this work, we optimize the geometry of a cylindrical induction coil in order to improve the imitation of the ideal dipole field. First, we analyze a single-layer coil and find that for an optimum length-to-diameter ratio (L/D) of 0.86:1 the imitation error, computed for a four radii distance from the coil’s center, is reduced by a factor of ∼12 (from 9.4 down to 0.73%) relative to a single-t...
متن کاملDependence of mutual inductance of a precise Rogowski coil on the primary conductor position
− A Rogowski coil is well-known current-to-voltage transducer, and in order to use it for the high-accuracy measurement of AC current (at power supply frequency) all influencing quantities and their contribution should be recognized and analyzed. Therefore, in this paper the analysis of the partial influence due to the position of the primary conductor relatively to the secondary coil, with the...
متن کاملImpedance Compensation Networks for the Lossy Voice-Coil Inductance of Loudspeaker Drivers*
A two-terminal network that is connected in series or in parallel with a circuit to cause its terminal impedance to be transformed into a desired impedance is commonly called a Zobel [1] network. In loudspeaker design a Zobel network consisting of a series resistor and capacitor connected in parallel with the voice coil of a driver has been described to compensate for the impedance rise at high...
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ژورنال
عنوان ژورنال: Serbian Journal of Electrical Engineering
سال: 2004
ISSN: 1451-4869,2217-7183
DOI: 10.2298/sjee0402143c