Hey guys, I have a few iron rods two inches in diameter by 3 inches long and I glued large heat sinks with thermal grease on the backs. I was wondering what kind of wire I should use to make it as efficient as possible. Its kind of confusing because I have read that thin wire plus more turns equals stronger magnet, but too thin equals too much resistance. I want to use a 12 volt battery. Any suggestions? Basically I'm looking for wire gauge and number of layers.
I have no idea how electromagnets such as these can be so strong but so small.
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I have no idea how electromagnets such as these can be so strong but so small.
**broken link removed**
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