Common Mode Inductors

author: MagTop
Common mode inductors,inductor, MAGTOP inductor
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Common mode inductors are important components that play a filtering role in electromagnetic interference, and are widely used in switching power supplies, frequency converters, welding machines, and ISDN and other communication equipment.
Common mode inductors are wound with the same windings in opposite directions on the wound core. When a symmetrical signal current flows in, the generated magnetic fields balance and cancel each other out and do not work. Once the unbalanced current flows in, the generated magnetic fields cannot cancel each other out, and the entire impedance of the inductor will absorb these interference signals to achieve the purpose of attenuation. Good attenuation characteristics require the highest possible impedance and the highest frequency range that can be achieved. In fact, the attenuation characteristics are determined by the core permeability and the material itself, the number of turns and the distribution of the windings according to different frequency ranges.

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