Metal detector
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United States of America Patent
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Sep 7, 2010
Grant Date -
Jan 22, 2009
app pub date -
Jul 19, 2007
filing date -
Jul 19, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A vibration canceling circuit for a metal detector. The metal detector includes a transmit coil, first and second receive coils, a differential circuit coupled to the first and second receive coils, a controller coupled to the differential circuit, and a vibration canceling circuit coupled to the controller. The controller uses a signal provided by the vibration canceling circuit to remove a vibration component from a metal detection signal.
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