Filtering inducer

Abstract

The invention relates to a wave-filter inductor which comprises a first magnetic guiding element, a first coiling, a second coiling and a second magnetic guiding element, wherein the second magnetic guiding element is a sealed magnetic path including a first magnetic guiding part through a hole of the first magnetic guiding element.

Description

technical field [0001] The invention relates to a filter inductor, in particular to a filter inductor capable of filtering both common-mode noise and differential-mode noise. Background technique [0002] Nowadays, people use electrical appliances very frequently, and the use of electrical appliances will inevitably use the power supply to make the electrical appliances work normally; however, when the electrical appliances use AC power, it may be caused by the parasitic capacitance of the power supply, high-frequency transformer or other components or The operation of stray capacitance makes the current supplied by the AC power supply carry noise current, which is the phenomenon of electromagnetic interference. [0003] Generally speaking, the noise generated by the use of AC power includes differential mode noise and common mode noise. There are already some corresponding methods for filtering these noises in the prior art, a filtering Noisy circuit layouts such as figur...

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Problems solved by technology

[0004] However, the above-mentioned traditional circuit design requires two differential mode filter inductors and one common mode filter inductor to achieve the effect of simultaneously filtering differential mode noise and common mode noise. Such a design cannot effectively reduce the cost of electrical products , and it is impossible to simplify its production steps; therefore, how to provide components that filter both differential-mode noise and common-mode noise is a problem that people in this field need to study urgently

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