| 摘要 |
A position sensor includes first and second parts rotatable relative to each other. The first part includes first and second half-ring conductors insulated from each other. The conductors define a sliding surface and the ends of the conductors are spaced to define a slot interrupting the sliding surface. The second part includes a spherical ball closely received in a bore normal to said sliding surface. A spring resiliently urges the ball into said slot to make contact between the two conductors.
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