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A lot of quartz watches use little button batteries to power them. A lot of fancy watches use a rotor to harvest the energy of flailing human limbs.
This device has the form factor of a standard watch battery button cell. Most of the interior is used to house an eccentric rotor, which charges the
remaining stub of battery.
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funny, and with a piezoelectric ratchet and pawl |
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In principle OK, but a radiothermal or Beta-capture cell would be way cooler* . |
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*In a metaphorical sense. Obviously, radiothermal batteries get quite warm in normal operation. |
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This could actually work. The available power would be
(very roughly) dependent on the square of the diameter of
the rotor - so maybe 1/20th that available from a
conventional full-diameter rotor, but that's plenty for a
quartz. |
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