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How did the wind powered generators work that were made for African primitives using a vibrating vertical strip.? Answered

There was a great TV bit on the amazing benefits to some grasS hut dwelling natives of having a one watt battery powered light in the evening.  Reduced the birth rate by a third!   The generator was powered by a vertical strip of something flexible held at each end beside the hut.  The wind caused the strip to rapidly rotate back and forth at its center.  A magnet(s?) place at its midpoint fluttered rapidly back and forth in front of a coil to generate current to be stored in a small wet cell.  The wet cell was carried into the hut at night, attached to a one watt LED and voila!  It change their lives.  They could READ in their spare time.   WHO HAS ANY IDEA OF HOW I COULD MAKE SUCH A GENERATOR??

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NachoMahma
NachoMahma

Best Answer 10 years ago

.  Searching for "ribbon wind generator" or "WindBelt" should get you started in the right direction.

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steveastrouk
steveastrouk

Answer 10 years ago

Wow. And he calls the guys that can "throw" one of these together from bits "primitives". They knock us out for ingenuity.

Steve

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lemonie
lemonie

10 years ago

"African primitives" is an interesting combination of words, is that a foreign-translation or just "old"?

L

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steveastrouk
steveastrouk

10 years ago

Seems to me these aren't "primitives" if they know how to make one and you don't.

Steve

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seandogue
seandogue

Answer 10 years ago

Did they build it or did someone build it for them?

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NachoMahma
NachoMahma

Answer 10 years ago

. Best Answer

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aeray
aeray

Answer 10 years ago

Seconded.

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frollard
frollard

10 years ago

Long story short it works on the harmonic resonance of the plastic strip in the middle -- much like when you make a kazoo out of a blade of grass in your hands, or the tacoma narrows bridge -- the strip tilts one way, then it broadsides the wind and flaps the other way. Tada, resonance.

Attach a magnet to the strip at a 'sweet spot' where it will extract energy but not stall the vibration, and you have most of a generator -- at least the moving magnetic field part.

Put a coil in the magnetic field, and you're generating low power AC. Complexity? Almost none. Bill of materials -- strips of plastic, magnet, coil, charger circuit -- much simpler than manufacturing rotary generators.

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HarveyH44
HarveyH44

10 years ago

They aren't 'primitives', just economically challenged. Maybe we could trade presidents for a couple of years... Guess that wouldn't help them much.