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.
Event details
- Event
- Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
- Technical Committee
- TC4
- Place
- Florence, ITALY
- Time
- 22 September 2008 - 24 September 2008
- Website
- http://www.imeko2008.org/