| http://www.w3.org/ns/prov#value | - The speed detection coil 50 shown in FIG. 4 is an example where n = 1 and three strands are provided for each magnet pole, and total of 24 strands are provided for the magnet 15 shown in FIG. 2 in which the magnet 15 is divided into 8 magnetized sections.
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