A Helmholtz coil for high frequency high field intensity applications

• Autorzy: Cirulo S. , Mariscotti A. , Viacava A.
• Języki publikacji: EN

Abstrakty

EN

In this work a general introduction to Helmholtz coil is presented and then attention is drawn to the implementation of a wideband (50 kHz) coil for applications requiring high magnetic flux density (up to a few mT) for sensor calibration, immunity tests and exposure of biological specimens. Experimental characterization confirms that field uniformity is quite good: dispersion is within 1.5% and 0.35% inside cubic volumes of 25% and 10% of the coil side respectively for the larger spacing; the measured impedance and the self resonance frequency are in accordance with the proposed simplified model; the magnetic field expanded uncertainty with k=2 is less than 0.5%.

Słowa kluczowe

EN

Helmholtz coils; magnetic measurements; calibration; uncertainty; stray capacitance

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2009
• Tom: Vol. 16, nr 1
• Strony: 117--127
• Opis fizyczny: Bibliogr. 17 poz., fot., rys., wykr.

Twórcy

autor

Cirulo S.

autor

Mariscotti A.

autor

Viacava A.

• University of Genoa, Elettrical Engineering Department, Via all'Opera Pia 11A, 16145 Genova, Italy,

Bibliografia

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• [3] EN 61000-4-9, Electromagnetic compatibility (EMC) - Part 4: Testing and measurement techniques. Section 9: Pulse magnetic field immunity test - Basic EMC publication, 1993-09.
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