Inductance
Been a long time but what was all that in science class about winding copper wire around an "iron" core? Are you absolutely positive that there isn't enough difference between a steel reel and an aluminum one to bother changing it? Like I said when I started this thread. A pipe welder with about 30 years was able to get enough root reinforcement but it didn't want to tie in. I just wonder if it was because my leads are wound up on a steel spool versus his on aluminum. I would ask him but I have taken up so much of his time and he never reply's to my e-mails.
I just found some interesting stuff as it relates to electromagnets that might be relevant. It would seem to me that I\we would want to do all I\we can to make a poor electromagnet. The paragraph below was taken from this link http://education.jlab.org/qa/electromagnet.html
Hints to Make Your Electromagnet Stronger
The more turns of wire your magnet has, the better. Keep in mind that the further the wire is from the core, the less effective it will be.
The more current that passes through the wire, the better. Caution! Too much current can be dangerous! As electricity passes through a wire, some energy is lost as heat. The more current that flows through a wire, the more heat is generated. If you double the current passing through a wire, the heat generated will increase 4 times! If you triple the current passing through a wire, the heat generated will increase 9 times! Things can quickly become too hot to handle.
Try experimenting with different cores. A thicker core might make a more powerful magnet. Just make certain that the material you choose can be magnetized. You can test your core with a permanent magnet. If a permanent magnet is not attracted to your core, it will not make a good electromagnet. An aluminum bar, for example, is not a good choice for your magnet's core.
Been a long time but what was all that in science class about winding copper wire around an "iron" core? Are you absolutely positive that there isn't enough difference between a steel reel and an aluminum one to bother changing it? Like I said when I started this thread. A pipe welder with about 30 years was able to get enough root reinforcement but it didn't want to tie in. I just wonder if it was because my leads are wound up on a steel spool versus his on aluminum. I would ask him but I have taken up so much of his time and he never reply's to my e-mails.
I just found some interesting stuff as it relates to electromagnets that might be relevant. It would seem to me that I\we would want to do all I\we can to make a poor electromagnet. The paragraph below was taken from this link http://education.jlab.org/qa/electromagnet.html
Hints to Make Your Electromagnet Stronger
The more turns of wire your magnet has, the better. Keep in mind that the further the wire is from the core, the less effective it will be.
The more current that passes through the wire, the better. Caution! Too much current can be dangerous! As electricity passes through a wire, some energy is lost as heat. The more current that flows through a wire, the more heat is generated. If you double the current passing through a wire, the heat generated will increase 4 times! If you triple the current passing through a wire, the heat generated will increase 9 times! Things can quickly become too hot to handle.
Try experimenting with different cores. A thicker core might make a more powerful magnet. Just make certain that the material you choose can be magnetized. You can test your core with a permanent magnet. If a permanent magnet is not attracted to your core, it will not make a good electromagnet. An aluminum bar, for example, is not a good choice for your magnet's core.
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