- #1
NathanSM
- 37
- 5
- TL;DR Summary
- I am not very experienced and this is my first post on this forum. My electromagnet so far has not been preforming as I expect. All of the maths I've done so far projects it as being much stronger than it is.
The magnet I have been created has been coiled around an aluminum tube. This tube has an OD of .5'' and an ID of .375''. This leaves 0.125'' as the thickness of the aluminum. The electromagnet was created with 17 AWG magnet wire. This wire is 157'long and has a diameter of 0.0469''. It is coiled around a 3'' length of the tube. The battery powering the circuit is two 7.1 Volt, 3000 mah batteries that were put into series to create a 14.2 volt battery.
To summarize:
507 feet of 0.0496'' magnet wire
3'' long, .5'' outer diameter aluminum tube
14.2 Volts Applied for a short duration
...
I am rather inexperienced and I have been struggling to find some of the information I feel is required to build a proper electromagnet. I intended to build a magnet based off of the batteries that I already had. I used this calculator to determine much of what I needed.
http://production-solution.com/coil-calculator.htm
After realizing just how weak the magnet was I looked back at that calculator to find my error. I noticed that the calculator was for iron cored magnets while I was building an air cored magnet. I tried to wrap the wire around an iron core and saw little improvement. I also tried to do all of the math that the calculator preforms automatically but I could not find all of the formulas necessary. The magnet itself heats up quit a bit after staying plugged in for a while, however for its intended use it only needs very temporary activation. Any ideas as to why my magnet is such a failure?
To summarize:
507 feet of 0.0496'' magnet wire
3'' long, .5'' outer diameter aluminum tube
14.2 Volts Applied for a short duration
...
I am rather inexperienced and I have been struggling to find some of the information I feel is required to build a proper electromagnet. I intended to build a magnet based off of the batteries that I already had. I used this calculator to determine much of what I needed.
http://production-solution.com/coil-calculator.htm
After realizing just how weak the magnet was I looked back at that calculator to find my error. I noticed that the calculator was for iron cored magnets while I was building an air cored magnet. I tried to wrap the wire around an iron core and saw little improvement. I also tried to do all of the math that the calculator preforms automatically but I could not find all of the formulas necessary. The magnet itself heats up quit a bit after staying plugged in for a while, however for its intended use it only needs very temporary activation. Any ideas as to why my magnet is such a failure?