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File:Hawkins Electrical Guide - Figure 292 - Eddy currents in a solid armature.jpg

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Illustration Description

Figure 292 -- Eddy currents in a solid armature

Eddy currents always occur when a solid metallic mass is rotated in a magnetic field, because the outer portion of the metal cuts more lines of force than the inner portion, hence the induced electromotive force not being uniform, tends to set up currents between the points of greatest and least potential. Eddy currents consume a considerable amount of energy and often occasional harmful rise in temperature.

Public Domain Source

  • Hawkins Electrical Guide, Volume 1
  • Chapter 19: Theory of the Armature
  • Page 272, Figure 292
  • Copyright 1917 by Theo. Audel & Co.
  • Printed in the United States

Upload Notes

  • Scanned by User:DMahalko, Dale Mahalko, Gilman, WI, USA -- Email: dmahalko@gmail.com
  • Scanned at 600dpi, 8-bit grayscale
  • Level-adjusted and cleaned up
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For a list of all these illustrations used in Wikipedia please see the article Hawkins Electric Guide on the English Wikipedia.

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Date/TimeThumbnailDimensionsUserComment
current07:09, 26 February 2009Thumbnail for version as of 07:09, 26 February 20092,410 × 1,581 (695 KB)DMahalko{{Information |Description={{en|1==== Illustration Description === Figure 292 -- Eddy currents in a solid armature Eddy currents always occur when a solid metallic mass is rotated in a magnetic field, because the outer portion of the metal cuts more line

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