Contribution to the study of eddy currents in a ring of Thomson
DOI:
https://doi.org/10.5377/rct.v0i13.1717Keywords:
eddy currents, magnetic levitation phenomenon, dissipative effect of the currentAbstract
The eddy currents induced in metals by a variable magnetic field are always a topic of interest, both theoretical and practical (electricity meters, furnaces, metal detectors) and in Physical teaching.
These flows occur, for example, a mounting ring Thomson type: when this core projecting from the coil extends to introduce a ring, often aluminum, appears magnetic levitation phenomenon due to repulsion between the coil current and the induced in the ring.
Our objective with this work has focused on obtaining the decreasing exponentially repulsive force that pushes the ring vs. height it reaches equilibrium. We carry out the following experiments:
1. Study of the repulsive force on the ring, in relation to height in the core (here we introduce a novel method for not need to turn the coil-ring assembly).
2. Study dissipative effect of the current in the ring, analyzing the temperature rise in container with water, heat generated by receiver ring. Additionally, we propose methods to study the oscillation frequency of the ring and the gap between the current in it in relation to the inducer.
DOI: http://dx.doi.org/10.5377/rct.v0i13.1717
Revista Ciencia y Tecnología, No. 13, diciembre 2013: 110-123
Downloads
1489
Downloads
Published
How to Cite
Issue
Section
License
© Revista Ciencia y Tecnología
Authors who publish in this journal accept the following conditions: In accordance with the legislation of copyright, Revista Ciencia y Tecnología, recognizes and respects the moral right of authors, as well as the ownership of the patrimonial right, which will be ceded to the magazine for its diffusion in open access in printed version and in digital format. By being part of multiple indexers, databases and reference systems, the articles published by Revista Ciencia y Tecnología will be visible and will be downloaded from these websites, indicating, in all cases, the authorship of the articles, the date of publication and the number of the journal to which they correspond.
