Introduction to DC power filter circuit: The circuit consists of three parts: the first part is a primary LC filter circuit, the second part is a common mode EMI filter, and the third part is a secondary LC filter circuit.LC filter, commonly known as passive filter, is a traditional DC power harmonic compensation device composed of inductance and capacitance, which can filter out harmonics in the power supply once or multiple times and purify the DC power supplyCommon mode filtering can address the problem of rapid transient group pulse interference with a repetition frequency of several thousand hertz in certain user sites, and can play a suppressive role.The PCB specification is FR4 42X77X1.6MM, with the shortest design for high current circuits and short paths, which can withstand higher currents and minimize external interference.The equipped inductors come in : 20A.Features: 1. Small and exquisite2. Reliable Performance3. Low consumption4. Wide range of use5. Shortest design of high current transmission lines.:Input: DC shall not exceed 50V (electrolytic capacitor can be replaced for lifting at higher voltage)Output: DCCurrent: 20ACircuit board: double-sided FR4 fiberglass boardElectrolytic capacitor: 50V 470UF consumption 2 PCSThin film capacitor: 100NF 2PCS 470 PF 1PCSMagnetic ring inductance: dosage 2PCS, (iron silicon aluminum is for 20A high current),Common mode inductance; Usage: 1 PCS, (flat copper with high current of 20A)Socket: 7.62 socket, 2PIN, 3PIN, 1 PCS eachThis module is suitable for eliminating DC power sources with electromagnetic interference and can be applied to DC circuits with strong electromagnetic interference in automobiles, motorcycles, and other industries.note: Different batches, the appearance/color of the electronic component on the product may be different, but the function is the same, it does not affect the useMaterial: PCB+electronic componentscolour: YellowPackage Contents:1 x FilterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.