- #1
Jonnylee
- 2
- 0
I'd like to build an electromagnet coil that's capable of re-magnetizing (Changing the magnetic field direction) AlNiCo500 (LNG44, Hc=50 kA/m). But failed.
The Magnet is is 3mm in diameter and 12mm in length.
In the beginning, I used a H-Bridge circuit to do that, shown in the attached thumbnail, the voltage is 20v, but it didn't work.
I thought maybe my coil is not thick enough, so I made another one.It didn't work too.
Finally, I directly use my hand to quickly add a 20V voltage on each side of the coil to make a pulse, but it still didn't work.
The coil was getting very hot. I don't know why. So I ask your help.
The Magnet is is 3mm in diameter and 12mm in length.
In the beginning, I used a H-Bridge circuit to do that, shown in the attached thumbnail, the voltage is 20v, but it didn't work.
I thought maybe my coil is not thick enough, so I made another one.It didn't work too.
Finally, I directly use my hand to quickly add a 20V voltage on each side of the coil to make a pulse, but it still didn't work.
The coil was getting very hot. I don't know why. So I ask your help.