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Activities/Turtle Art/Using Turtle Art Sensors (view source)

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Loudspeakers contain powerful ferrite magnets. The PC speaker magnet (pictured) produces a voltage swing of +-1V

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Loudspeakers contain powerful ferrite magnets. The PC speaker magnet (pictured, complete left, disassembled right) produces a voltage swing of +-1V

[[File:Ferritemagnet.jpg]]

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