Conventional voltage thermosetting plug-in electromagnetic coil SB1010

Principle of self-inductance and mutual inductance

1.Electromagnetic inductor is a passive electronic component, which can store electromagnetic energy in the form of magnetic flux. Generally speaking, the wire is coiled, and if there is a current basis, it will cause a magnetic field from the right side of the direction of current mobility. The structure of electromagnetic inductor is mainly composed of coil winding, magnetic core and auxiliary support point packaging material. Let's see what is the electromagnetic induction and mutual inductance of DC electromagnetic coil.

2.Self-induction phenomenon: When the current passes through the waterproof electromagnetic coil, a magnetic field will also be generated around the coil. When the current in the coil changes, the magnetic field around it also changes. This changing magnetic field can induce current in the coil itself, which is self-induction. It is called self-inductance coefficient. Sometimes there are several coils in electromagnetic induction, and when the coils will affect each other, mutual inductance will occur. The electromagnetic induction correlation between them has become a mutual inductance index.

3.Mutual inductance: when two electromagnetic coils are close to each other, the magnetic field of one electromagnetic coil will change to the other 220 volt electromagnetic coil, which is called mutual inductance. Mutual inductance lies in the coupling degree between two electromagnetic coils. Components made with this basic principle are called transformers. It is a coil, which is symmetrically wound on a closed magnetic core. The orientation is reversed and the number of turns of the coil is the same. The most ideal common-mode choke coil can suppress the common-mode interference between L and E, but it cannot suppress the differential-mode interference between L and N..

4.In essence, the effect of electromagnetic field on the conductor itself is called "self-induction phenomenon", that is, the transformed current generated by the conductor itself produces a changing magnetic field, thus affecting the current in the conductor。