Contribution to the study of eddy currents in a ring of Thomson

Authors

  • Felipe Garay Universidad Nacional Autónoma de Honduras. Facultad de Ciencias, Escuela de Física
  • Víctor Armijo Universidad Nacional Autónoma de Honduras. Facultad de Ciencias, Escuela de Física
  • Sergio Serrano Universidad Nacional Autónoma de Honduras. Facultad de Ciencias, Escuela de Física

DOI:

https://doi.org/10.5377/rct.v0i13.1717

Keywords:

eddy currents, magnetic levitation phenomenon, dissipative effect of the current

Abstract

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

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Published

2015-01-08

How to Cite

Garay, F., Armijo, V. and Serrano, S. (2015) “Contribution to the study of eddy currents in a ring of Thomson”, Jornual of Science and Technology, (13), pp. 110–123. doi: 10.5377/rct.v0i13.1717.

Issue

Número 13, Diciembre 2013

Section

Diversity Theme

License

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