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Hi everyone, i am going to tell u how to make a small, simple and strong electromagnet. Sorry about the bad quality pics and videos and i could not upload many pics step by step, but i will try to explain as much as i can. U can see the videos in the last step.

Step 1: The Items You Will Need

The items you will need are:-
1. 20 gauge enamel coated copper wire also known as magnet wire. ( I bought around 20 meters)
2. a spool like the one i use or something similar.
3. electrical tape.
4. 6v battery (better if using 800-850 ma) i used a 1.5A.
5. A ac to dc converter.
6. aligator clips.
7. a neodymium magnet.

And a lot of time.

Step 2: Step 3

This is the most toughest, boring and time taking step of all. All u need to do is take the 20 gauge copper wire and coil it around the spool until u get 6-7 layers. You have to coil them close and tight, and have to put some electrical tape after each layer.

Step 3: Step 4

Now once u have finished coiling the wire u can heat the tip of the wire until it gets red hot or red and then take a wet steel wool and scrap of the enamel coating off the wire. then u should be able to see bright copper.

Step 4:

Okay, ur electromagnet is ready, now to test it take a converter of 800-850 ma(i used 500 ma which is really weak.) and connect the pins using the alligator clips and then set the converter on 9v and above and u can test it by dropping a magnet inside it and it will stay in the middle and if ur using a 800 or 850 ma converter try keeping a iron or steel nail at the bottom of the elctromagnet and release it and it should get sucked into the middle this is called solenoid effect and u can study more about it here http://en.wikipedia.org/wiki/Aharonov%E2%80%93Bohm_effect. If ur not using an 850ma converter just use an 6v 1.5A or an 6v1A battery and test the experiments given above, but be aware that if u are using a 6v 1.5A battery the electromagnet gets really hot to handle.

Step 5: Step 5

Great ur electromagnet is done, now if u need to know the north and south pole of a  electromagnet all u have to do is curl ur fingers and then point ur thumb in the direction of the + wire and that will be ur north pole for example if i have connected the battery + to the wire at the top of the coil then that will be the north pole and the other one will be the south pole. Thanks for reading the instructable and i hope it was helpful and informative.These are the video links http://www.youtube.com/watch?v=P6weW6AlU94   http://www.youtube.com/watch?v=P6weW6AlU94    http://www.youtube.com/watch?v=Qp-Xe6swmQQ
Thanks keep me posted
<p>Hi,</p><p>None of your video link works.</p><p>Its says video is not available..</p><p>pls send the link if you have video.</p>
<p>Hi,</p><p>None of your video link works.</p><p>Its says video is not availabe..</p><p>pls send the link if you have video.</p>
<p>Hi,</p><p>None of your video link works.</p><p>Its says video is not available..</p><p>pls send the link if you have video.</p>
<p>Hi,</p><p>None of your video link works.</p><p>Its says video is not availabe..</p><p>pls send the link if you have video.</p>
<p>Hi,</p><p>None of your video link works.</p><p>Its says video is not available..</p><p>pls send the link if you have video.</p>
<p>Hi,</p><p>None of your video link works.</p><p>Its says video is not availabe..</p><p>pls send the link if you have video.</p>
<p>Hi,</p><p>None of your video link works.</p><p>Its says video is not availabe..</p><p>pls send the link if you have video.</p>
<p>Hi</p><p>I'm trying to magnetize a ferrite powder, Could I use something like this?</p><p>Thanks Chris</p>
As you made it, approx. how much can it lift/repel? And how big is it?
Also, video links aren't working on my phone.
I forgot to tell this , u can increase ur electromagnets strength by adding a iron core and i recommend a soft iron core because soft iron gets magnetised when there is electricity and gets demagnetised when there is no current, but the other irons get magnetised and maintain that property. A few examples are objects made out of steel get magnetised and dont get demagnetised.
even better, just use a weak solid ferrite magnet for the core, which you would increase its magnetism with using the coil. if your core magnet is too strong, heat it up a little bit so its hot to touch, and it will gradually loose its magnetism. stop heating and cooling once its weak enough. but overheat and it looses it completely.

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