Description: Introduction to DC power supply filter circuit: The circuit consists of three parts: the first part is the primary LC filter circuit, the second part is the common mode EMI filter, and the third part is the secondary LC filter circuit. LC filter, commonly known as passive filter, is a traditional DC power supply harmonic compensation device composed of inductors and capacitors. It can filter out one or more harmonics in the power supply and purify the DC power supply. Common mode filtering can suppress the fast transient group pulse interference problem with a repetition frequency of several thousand hertz at some user sites. The PCB specification is FR4 42X77X1.6MM. It adopts the shortest design for high current circuits, with a short path, can withstand large currents, and minimize external interference. The inductors are: 20A. Features: 1. Small and exquisite 2. Reliable performance 3. Low power consumption 4. Wide range of use 5. Shortest design for high current transmission lines. Input: DC shall not exceed 50V (higher voltage can replace electrolytic capacitor) Output: DC Current: 20A Circuit board: double-sided FR4 fiberglass board Electrolytic capacitor: 50V 470UF 2PCS Film capacitor: 100NF 2PCS 470 PF 1PCS Magnetic ring inductor: 2PCS, (FeSiAl is suitable for 20A large current), common mode inductor; Usage: 1, (20A large current flat copper) Socket: 7.62 socket, 2PIN, 3PIN, 1 each This module is suitable for eliminating DC power supply with electromagnetic interference, and can be applied to DC circuits with strong electromagnetic interference in industries such as automobiles and motorcycles. Note: The appearance/color of the electronic components on the product may be different due to different batches, but the functions are the same and do not affect the use Material: PCB + electronic components Color: yellow Package content: 1 x filter Only the above package content, not including other products. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual object. The measurement error is +/- 1-3cm.