Electronic coils are widely used in many fields, such as electronic equipment, electronic tools, consumer electronics, health electronics and so on, have been implemented, it is not for the electronic coil is very strange, but it can never let someone else to see it from the surface, only in the use of real experience to experience it. Electronic coil and not so well known, but for which there is a glimmer of understanding, the effect it brings is absolutely let you surprised, now the development trend of the: the development of the tertiary industry, and coil electronic contribution here is not small, from the aspects of consumption and health is enough to illustrate this point. It has already earned enough territory in many areas. It seems that the situation is very optimistic about the electronic coil.