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In 7th grade I did a cool project where I took a garden water pump and closed it in a tube, ran water through it backwards, and collected water on the other end. I checked with a voltmeter, and it was around 33 volts A/C. Then I added a recycled bridge rectifier to change the voltage to DC. Then I had a Off grid, hose powered flashlight.
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Posted:Aug 30, 2009
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