File:Self Excited vs Magneto.png

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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