- #1
mgiddy911
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I am working on a physics project, and I need to build a strong electro magnet. I have previously made many real weak ones simply by coiling wire around a nail and conecting it to a AA battery(1.5V). Can anyone help me make a stronger version. I tried using a powersupply from an old computer, it plugged into a 120 V wall outlet and converted AC to DC with outputs +5V, -5V, +12V and -12V. so I took the 12 and -12 leads and stripped them and connected them to a wire coiled around an iron pipe. however the powersupply then wouldn't kick on, as if a safety feature was preventing it, as soon as I disconnected one of the wires it would kick on, but then i didn't have an electromagnet. My idea was to use the 12 volt leads and transform them to high voltage low current to be safer, but for now I was just using the 12V as is. ONe idea my dad gave me was that possibly I need some resistance for the powersupply to work, so adding some resistors in series before the wire coil may work?
So I need some instruction on making a much stronger electromagnet.
Any help or weblinks would be appreciated
So I need some instruction on making a much stronger electromagnet.
Any help or weblinks would be appreciated
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