tag:blogger.com,1999:blog-34122913802730998352011-04-21T19:14:01.313-07:00Jhon Coolmerhttp://www.blogger.com/profile/14034435023314701334noreply@blogger.comBlogger21100tag:blogger.com,1999:blog-3412291380273099835.post-41993333819112567952007-05-03T02:55:00.000-07:002007-05-03T02:58:59.263-07:00take a carboard strip. and make a hollow ended cardboard box.Spin the magnet REALLY fast and the bulb will light dimly. If it doesn't work, try spinning it in a dark room so you don't miss the dim glow. If needed, adjust the position of the magnets so they don't hit or scrape the cardboard. This thing has to spin *fast*, and if the magnets whack the cardboard and slow down, you won't see any light. Spin it faster than eight revs per second.<br />Once you get it to work, try clamping the point of the nail into the chuck of a hand-crank drill. Spin the magnets fast with the drill and the bulb will light brightly. Don't go too fast or you'll burn out the bulb, or maybe fling magnets all over the room. You can try this with an electric drill as well, although electric drills don't spin as fast.<br />Note: your generator produces Alternating Current, not Direct Current. The output voltage is about 2 volts max, so there is no electric shock hazard at all.<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/3412291380273099835-4199333381911256795?l=hyderbad4you.blogspot.com' alt='' /></div>Jhon Coolmerhttp://www.blogger.com/profile/14034435023314701334noreply@blogger.com0tag:blogger.com,1999:blog-3412291380273099835.post-13683073782707413302007-05-03T02:52:00.001-07:002007-05-03T02:54:54.104-07:00PARTS:<br />4 - 1cm x 2cm x 5cm ceramic magnet, Radio Shack #64-1877 $1.99, or sciplus.com<br />1 - #30 Magnet wi re 200ft, Radio Shack spools #278-1345 $4.99<br />1 - Miniature Lamp, 1.5V 25mA #272-1139 $1.29 Radio Shack, or #48 lamp<br />1 - Cardboard strip, 8cm x 30cm<br />1 - Large nail, 8cm long or more<br />Misc. - Knife or sandpaper to strip the wires<br />Misc. - tape to hold wire down<br />Optional: hand drill or electric drill to spin it (hand drill is best) Also: other sources of wire<br />This is an AC electric generator which lights up a tiny incandescent light bulb. The generator is made from a hollow-ended cardboard box with a nail through the center. The box has many turns of fine copper wire wound around it, with four large magnets clamped around the nail. When the nail and magnets are spun fast by hand, the little light bulb lights up dimly.<br />I wrote this article because I found lots of projects for making a simple electric motor, but nobody gave the secret for making a generator. Well, here it is: use strong magnets, lots of fine wire, and a special light bulb which only needs 1/2 volt. Also, don't bother making a "commutator," just hook the wires directly to the bulb. It's much simpler that way, but the generator will produce AC (alternating current).<br />Before you start, here are some notes: you must use a special light bulb. Normal flashlight bulbs will not work. Also, you must use the large, strong magnets shown in the parts list. Smaller magnets won't work. The wire must be #30 gauge or smaller. Also, you can improve the generator if you buy lots of extra wire and wind it on the cardboard, since the bulb will light up even when the generator spins slowly.<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/3412291380273099835-1368307378270741330?l=hyderbad4you.blogspot.com' alt='' /></div>Jhon Coolmerhttp://www.blogger.com/profile/14034435023314701334noreply@blogger.com0