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This is an easy way to get volts from pennies card board and vinegar
-Pennies (preferably before 1982) -cardboard -Vinegar -Sand paper -Duct tape - Wier
Put all your pennies on a sticky surface and sand them down Sanding the pennies down will release the zinc under the copper coating
Cut out cardboard disks and soak them in vingar
Next stack the pennies and cardboard disks in the order of : penny,cardboard, penny, cardboard
Now You can put wire on both ends and duct tape it all up
Now it should look like this and if you did it right it should give off close to 3-5 volts If you want more projects like this please follow my page
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Nice simple idea you've got. But I think you'll need fully copper pennies (1981 and earlier) alternating with sanded zinc pennies (1984 and later to be positive, since a few rare ones were copper in '82 or '83). So to clarify, your opening statement about 1982 pennies should mention both kinds. Pennies 1981 and earlier are solid and are not zinc with copper plating. Hope this helps make your project better! :)
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