you need
• - a set of permanent magnets;
• - current source;
• - insulated wire.
Guide
1
Take permanent magnet .Place it in an external magnet eld, which is stronger than magnetic field of the magnet well.You can create other, more powerful permanent magnet ohms and can be electro magnet th.Continue to hold the magnet in this field for some time and his magnetic properties improve.For each magnet and its gain depends on many factors, so the effectiveness of this method it is impossible to predict.
2
to strengthen the permanent magnet , combine it with other magnet s, in this case, the field will increase in proportion to magnet s.The magnets are connected to each other so that like poles are oriented the same way.Because they are repelled, so t
hey need to stick together.
3
Upon reaching a certain temperature magnetic properties of a permanent magnet and disappear.This point is called the Curie point.But cooling a magnet to temperatures well below the Curie point, it does not increase its power, because this transition is a phase that is discontinuous.
4
Electro a magnet core electrical steel wound on his insulated wire.Increase its magnet tion effect in two ways.The first - increase the current supplied to the coil.In this case, the magnet tion induction field will increase in proportion to the current in the coil magnet well.But if the coil current exceeds the short-circuit current, it will burn, then the electro magnet fails.Therefore, to increase the current supplied to the electro magnet to be very careful.Increasing the current conducted by increasing a current source of EMF.
5
If this is not enough, strengthen electro magnet other way - increase the number of winding turns, without increasing its length.To do this, apply a second series of wires and, if necessary, and then a third.Magnetic induction field will increase in proportion to the number of turns of the coil electro magnet well.