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our body as a energy source

 use a piezoelectric sheet and a capacitor to store energy from body movements
 
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why not use our body movements to generate electricity?we can use a thin sheet of a piezoelectric such as PZT(lead zirconate titanate) strapped on to our body.Body movements cause compression of the sheet causing it to generate a voltage which can stored in a capacitor.The voltage produced might not be great but it can to be used to run ur walkmans/discmans.
—dreamchaser, Dec 24 2002

Piezoelectric shoe research http://www.eetimes....ws/OEG20000519S0040
[krelnik, Oct 04 2004]

Piezo shoes http://www.halfbake.../idea/Piezo_20shoes
Very similar halfbaked idea by [rayfo] [krelnik, Oct 04 2004]

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       There have been a number of folks researching using piezo to harvest power for personal electronic devices, mostly from shoes. So far nobody seems to have productized it. See links.
—krelnik, Dec 24 2002
   

       1- because the components are way too expansive   

       2- there is much more thermal energy wasted around (well, in hot countries, that is)
—sidi, Jan 21 2004
   

       My watch is powered by my movements. Mmmm... kinetic.
—Detly, Jan 22 2004
   


 

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