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File:Self Excited vs Magneto.png

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Summary

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Paraphrased article description:

A self-excited shunt-wound DC generator is shown on the left, and a magneto DC generator with permanent field magnets is shown on the right. The shunt-wound generator output varies with the current draw, while the magneto output is steady regardless of load variations.

From illustration caption:

Circuit diagrams to illustrate the difference between a dynamo and a magneto. The former has its field magnets F F magnetized by means of a small current flowing around a shunt circuit. In a magneto the field magnets are permanently magnetized. The strength of the magnetic field of a magneto is constant while that of a dynamo varies with the ouput.

Public Domain source:

  • Hawkins Electrical Guide, Volume 1
  • Chapter 15: Classes of Dynamo
  • Page 183, Figure 188, 189
  • Copyright 1917 by Theo. Audel & Co.
  • Printed in the United States

For a list of all these illustrations used in Wikipedia please see the article Hawkins Electrical Guide.

Scanned by Dale Mahalko, Gilman, WI, USA

DMahalko (talk) 20:20, 12 January 2008 (UTC)

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Date/TimeThumbnailDimensionsUserComment
current20:39, 12 January 2008Thumbnail for version as of 20:39, 12 January 20081,249 × 953 (94 KB)DMahalko (talk | contribs)== Summary == Separate excitation of an electric generator. DC generator with commutation is shown, but the principle also applies to AC alternators. '''Public Domain''' source: * Hawkins Electrical Guide, Volume 1, Page 196. * Copyright 1917 by Theo. Au

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