Introducing the DC Power Filter: The circuit consists of three parts: a primary LC filter circuit, a common mode EMI filter, and a secondary LC filter circuit. LC Filter: Also known as a passive filter, it's a traditional power harmonic compensation device composed of inductance and capacitance. It can filter out harmonics in the power supply one or more times, purifying the power. Common Mode Filtering: Can solve the problem of fast transient group pulse interference with a repetition frequency of several thousand hertz in certain user locations, and can play a suppression role. PCB Specification: 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 the specifications: 20A. Features: 1. Small and exquisite 2. Reliable performance 3. Low consumption 4. Wide range of applications 5. Shortest design of high-current lines. Specifications: Input: DC must not exceed 50V (electrolytic capacitor can be replaced for lift at higher voltage) Output: DC Current: 20A Circuit board: double-sided FR4 fiberglass board Electrolytic capacitor: 50V 470UF consumption 2 pcs Thin film capacitor: 100NF 2PCS 470 PF 1PCS Magnetic ring inductance: dosage 2PCS, (iron silicon aluminum is for 20A high current), Common mode inductance; Usage: 1 pc, (flat copper with high current of 20A) Socket: 7.62 socket, 2PIN, 3PIN, 1 pc each This module is suitable for eliminating power supply with electromagnetic interference and can be applied to DC circuits with strong electromagnetic interference in automobiles, motorcycles and other industries. Material: PCB+electronic components color: Yellow Package Contents: 1 x filter