A HELMHOLTZ COIL FOR HIGH FREQUENCY HIGH FIELD INTENSITY APPLICATIONS
S. Ciurlo, A. Mariscotti, A. Viacava
Abstract:
In this work a general introduction to Helmholtz coil is presented and then attention is on a practical implementation of a wideband (50 kHz) coil for high magnetic flux density applications (several mT may be obtained). A specific winding design is presented that ensures wideband operation with a resonance frequency of 55 kHz in the present implementation. Performances of the square coils for different coil separation as reported in standards and literature are presented. Field uniformity is within ±1.5% and ±0.35% inside cubic volumes of 25% and 10% of the coil side respectively, so suitable also for high accuracy applications such as sensor calibration. Wire gauge and silicon insulation ensures the possibility of applying a significant input current in order to obtain several mT over an extended frequency range.
Download:
IMEKO-TC4-2008-189.pdf
DOI:
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Event details
IMEKO TC:
TC4
Event name:
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
Title:
XVIth IMEKO TC4 International Symposium on Electrical Measurements and Instrumentation (together with 13th IMEKO TC4 Workshop on ADC Modelling and Testing)
Place:
Florence, ITALY
Time:
22 September 2008 - 24 September 2008
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