| Author | Message | ||
     Anonymous |
This actually works. First you take an iron nail and wrap at least three quarters of it in copper wire.Next strip the wire ends and attach them to a 9 volt battery clip.Now install the 9 volt.Get a broken piece of a paper clip.Probe it with the tip of the nail slowley until you are able to lift it up a little. Note, this might not work as well as a regular magnet but it does work. -Nick a-k-a Vanilla Gorilla | ||
| Anonymous |
u can also put a screwdriver in place of the nail | ||
| kwigibow |
I made an incredible electromagnet out of about 225 feet of wire, and with a 25 volt transformer in place of the battery. The transformer keeps blowing! Is there any way to solve this problem? | ||
| Simon Quellen Field (Sfield) |
Place a light bulb in series with the magnet to limit the current. Select a bulb that is designed to work at or near the target voltage. | ||
| Simon Quellen Field_Sfield |
I wonce made an electro magent from 45m of copper wire and 55v tranzformer the fuze cpet on blowing up so I tried the light blub but it blew up too lol | ||
| justine aquino (Mnado) Intermediate Member Username: Mnado Post Number: 21 Registered: 12-2005 |
you dont actually need a nail or screw driver for this it only serves as a chasis for the coil or just to hold them in place yu can also use the armature of the simple motor connect the armature's axels directly to the battery terminals(the armature of the electic motor is an electro magnet | ||
| Steve Greenfield (Aliensteve) New member Username: Aliensteve Post Number: 1 Registered: 6-2007 |
Actually, the nail -is- necessary. The soft iron acts to concentrate the flux, making the electromagnet stronger. | ||
| John Kondo (Smartypants) Junior Member Username: Smartypants Post Number: 7 Registered: 4-2008 |
The electromagnetic field is still there just weaker because of the removal of the nail. The nail does two jobs, to give an easier job of winding the wire (NOT around your finger-ouch.) and to concentrate the electromagnetic field, so the nail/screwdriver/bolt/steel bedframe/metal clock hand/sissors/nail clippers/steel hot water pipe (believe it or not I tried those!) is not needed if you want ONLY the field but as usual if you want to pick things up then the nail/pole/whatever is needed to concentrate the field. *note* the field might seem sronger with the nail in place but the nail is only there to CONCENTRATE the field, not increase its strength. With or without the nail both of the fields power is the same (only the one without the nail the field is scattered around and concentrates (though not as much the one with the nail) near the edges and the field with the nail in place the field concentrates around the ends more than the one without the nail. Energy is nither created or destroyed, only converted. (Like my poor ice cream my sister said was too cold (my sister has cold-phobia) and stuck the whole thing in the microwave and when I got back the ice cream was warm enough for oatmeal. |
