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  • Users: gowan
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  1. gowan

    What is an optimal configuration of (neodymium)magnets for induction.

    I'm making a geophone, a seismic sensor. My plan is to get a 3/4" diameter by 1" neodymium round bar magnet. Then surround it with a collar with a space sufficient to accept a thin plastic cylinder wound with speaker wire. I notice that in the commercial versions, the wire is wound at the top...

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