Magnet charger.
Magnet charger.
(OP)
I am interested in building a magnet charging device for saturating magnets in DC motor assemblies. TDK lists the residual flux densities if this particular magnet series wet-anisotropic(SrO6Fe2O3) @ 4.6kG. It is my understanding that a field in excess of 5x this is neccessary to fully saturate these magnets.
Firstly, is this actually the case? Secondly, is there a way to calculate the Gauss or Tesla produced by electro magnetic coil if I know how many amp turns the coil produces? Conversely, how do I calculate the size of the coils (and power)neccessary to produce A field of this size?
Firstly, is this actually the case? Secondly, is there a way to calculate the Gauss or Tesla produced by electro magnetic coil if I know how many amp turns the coil produces? Conversely, how do I calculate the size of the coils (and power)neccessary to produce A field of this size?





RE: Magnet charger.
Yes.
Now you are getting picky.
I take it that this is a multi-pole assembly. Most of these jobs are done with air-core pulse magetizers. You need to reach fields beyond the saturation of iron and you want to do it quickly.
When we know what the geometry is we can discuss this further.
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Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Magnet charger.
RE: Magnet charger.
The capacitor discharge equipment for driving it is fairly simple too. Just one caution, if the coils have few turns the pulse might be too short. Better to use lower power and a few more turns.
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Magnet charger.
However, with a air-core type of unit how do I interface the magnet/can assembly to the coils (and what materials to use)? Also what would be the ideal materials to wrap the coils around (fiberglass/composite tubing?)
I live in the silicon valley, so there are plenty of good tech surplus outlets, and just about anything is available.
RE: Magnet charger.
You will also need to build a frame or box to hold you coils. I alwaysed like using paper/phenolic plates since they are easy to work with.
You are basicly builing a simple solinoid with a window in it.
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Magnet charger.