T18*10*8 high current coil inductor

T18*10*8 high current coil inductor

For an ideal inductance model, when the coil is wound, all the magnetic flux is concentrated in the center of the coil. But usually the annular coil will not wrap around a full, or winding system is not tight, which will cause the leakage of magnetic flux. A common-mode inductor has two windings with a considerable gap between them, resulting in flux leakage and the formation of a differential mode inductor. Therefore, common mode Inductors generally have a certain differential mode interference attenuation ability.

In the design of filter, we can also use leakage sensing. For example, in the ordinary filter, only one common mode inductor is installed, and the leakage inductance of the common mode inductor is used to generate an appropriate amount of differential mode inductor, which can inhibit the differential mode current. Sometimes, it is necessary to increase the leakage inductance of the common mode choke artificially and increase the differential mode inductance to achieve better filtering effect.