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Simple generator

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http://amasci.com/coilgen/ Build this ultra-simple AC electric generator from magnets, wire, and cardboard. (And a big nail!) Light a small lightbulb, or flash a red LED. This demonstrates how generators work. Now if you want a more useful device, use a small DC motor as a generator, since it has much better magnetics design. All motors are generators. Figure out how to spin a motor's shaft, and you can make a small powerful generator. Or... figure out how to convert the cardboard generator into a motor!

Channel: Science & Technology
Uploaded: November 30, 1999 at 12:00 am
Author: wbeaty

Length: 07:43
Rating: 4.83
Views: 186707

Tags: amasci  coil  electricity  experiment  experiments  fair  generator  magnet  magnets  physics  science  tutorial  

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mashangg (November 30, 1999 at 12:00 am)
you rock man
azzz98 (November 30, 1999 at 12:00 am)
any tips on how to make it produce more electricity?
azzz98 (November 30, 1999 at 12:00 am)
if we use a 24 gauge wire will it work better??
ouPaul (November 30, 1999 at 12:00 am)
it's easy and it's helpful! THanks.
the4x4yamaha (November 30, 1999 at 12:00 am)
i think there is some possible way... there has to be. if i had the time and items i would try it.
wbeaty (November 30, 1999 at 12:00 am)
> I don't think it was 300 turns One radioshack spool is about 300 turns. That will work, but you'll have to spin the magnets pretty fast, like snapping your fingers with the nail between. If you want a less-simple generator, you can buy a second kit of radioshack wire and add another spool of #30 wire. Just clean off about 1/2 inch of the ends of old and new wire, and twist them together many times. Be careful to keep winding the wire in the same direction as before!
videogame5975 (November 30, 1999 at 12:00 am)
When I was wrapping the wire around the cardboard there was no more wire left on the spool. I don't think it was 300 turns so I don't know waht to do. Do I connect it with another one? And if so how.
andrew11235 (November 30, 1999 at 12:00 am)
you can't get more energy outputted than is inputted. and typical machines don't even have 100% efficiency, as energy is usually lost to heat and friction. but if you create a device that doesn't lose any energy (100% efficiency) you could technically create a perpetual motion device.
jdarkeye (November 30, 1999 at 12:00 am)
i used ur thing and got an A on my science profect thanks!!!!
rimackonline (November 30, 1999 at 12:00 am)
Congratulations, nice work. Maybe I'll post my generator here!

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