A HELMHOLTZ COIL FOR HIGH FREQUENCY HIGH FIELD INTENSITY APPLICATIONS

• 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:

  _unreg_tc4-2008.189

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