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Typical structure of EMI filter
Dec 20, 2018

Low pass Filter

EMI filter is a kind of low-pass filter composed of inductance and capacitance, which can make the useful signal of low frequency pass smoothly and inhibit the high frequency interference.

Role

The role of EMI filters is mainly reflected in the following two aspects:

2.1. Inhibit high Frequency interference

Inhibits the influence of high frequency interference on equipment in AC power grid;

2.2, inhibit equipment interference Inhibits interference of equipment (especially high frequency switching power supply) to AC power grids.