6A 25A EMI Filter Power Filter Board High-frequency Two-stage Power Low-pass Filter Board EMC Audio Amplifier Purifier

Product description: The power supply EMI filter is a reactive low-pass filter installed at the power inlet of the electronic equipment. It can not only suppress the noise interference transmitted through the power line of the power grid, but also suppress the high-frequency interference signal generated by the electronic equipment itself from entering the power grid and endangering electronic equipment. Therefore, EMI has become a must-install device in electronic equipment. Power supply noise is a kind of electromagnetic interference, and its conducted noise spectrum is roughly 10kHz~30MHz, up to 150MHz. According to the different propagation directions, power supply noise can be divided into two categories: one is the external interference introduced from the power supply line, and the is the noise generated by the electronic equipment and conducted through the power line. This shows that the noise belongs to a two-way interference signal, and the electronic equipment is both the object of noise interference and a noise source. From the formation characteristics, noise interference is divided into two types: series mode interference and common mode interference. Series mode interference is the noise between two power lines (referred to as line-to-line). Common mode interference is the noise between two power lines to the earth (referred to as line-to-ground). Therefore, the electromagnetic interference filter should meet the requirements of electromagnetic compatibility (EMC) and must be a bidirectional RF filter. On the one hand, it should filter out the external electromagnetic interference introduced from the AC power line, and on the hand, it can also prevent the equipment from emitting noise interference to the outside, so as not to affect the normal operation of electronic equipment in the same electromagnetic environment. In addition, the electromagnetic interference filter has a suppressive effect on both series mode and common mode interference. Notes: The selection of EMI filter should consider its operating voltage, operating current, and withstand voltage value The EMI filter should be installed at the power inlet to reduce radiation interference It is better to use double-glue wire for EMI filter connection line, which can eliminate some high-frequency interference signals The input and output lines of the EMI filter should not be parallel, and a certain distance should be kept to ensure the function of the filter The E point of the EMI filter and the chassis shell must be in good contact, and the ground wire should be connected Package quantity:1Pc Note: Please allow 2%-3% differences due to manual measurement. The above dimensions are for reference only. As different computers display different colors, thank you for your understanding, the actual product color may be slightly different from the image.