Circuits designed by David Johnson,
P.E.
Last Updated on:
Sunday, December 31, 2017 09:34 AM
Master Category List - Dave's Circuits
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Geophones
Motion Detectors
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Home Made Geophone Detects Foot
Stomp |
A home made geophone is made from a strong magnet, a coil of wire and a rubber
band. The circuit is sensitive enough to detect the vibrations of a nearby foot
stomp. It could be used as an earthquake detector. |
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Click on Drawing Below to view PDF version of Schematic |
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