- #1
Jdo300
- 554
- 5
Hello All,
Consider the following. Take a cylindrical magnet (say 2” long by 0.5” diameter and wrap it with iron wire in such a fashion that the windings do not touch (assuming it is uninsinuated). Wrap just enough turns of wire so that the magnet’s field is essentially short circuited through the iron, but use only enough iron to absorb the field you need (should be about saturated).
Now, let’s say that this magnet has a field strength of 5 units and the iron wire is completely saturated with the 5 units of flux from the magnet. If I then apply a DC current in this iron coil that causes it to produce a magnetic field with one unit of strength (while the iron wire is saturated with the permanent magnet’s field) what will happen?
1. Will the flux lines from the permanent magnet that were shorted through the iron wire go through the air since the wire would be saturated from the current?
2. If the flux from the permanent magnet comes out of the iron, will the iron wire release 1 unit of the permanent magnet’s field for every unit of magnetic energy the coil produces, or is this relationship likely to be non-linear?
I would appreciate anyone who could shed some light on this.
Thanks,
Jason O
Consider the following. Take a cylindrical magnet (say 2” long by 0.5” diameter and wrap it with iron wire in such a fashion that the windings do not touch (assuming it is uninsinuated). Wrap just enough turns of wire so that the magnet’s field is essentially short circuited through the iron, but use only enough iron to absorb the field you need (should be about saturated).
Now, let’s say that this magnet has a field strength of 5 units and the iron wire is completely saturated with the 5 units of flux from the magnet. If I then apply a DC current in this iron coil that causes it to produce a magnetic field with one unit of strength (while the iron wire is saturated with the permanent magnet’s field) what will happen?
1. Will the flux lines from the permanent magnet that were shorted through the iron wire go through the air since the wire would be saturated from the current?
2. If the flux from the permanent magnet comes out of the iron, will the iron wire release 1 unit of the permanent magnet’s field for every unit of magnetic energy the coil produces, or is this relationship likely to be non-linear?
I would appreciate anyone who could shed some light on this.
Thanks,
Jason O