DC LC Filter EMI Electromagnetic Interference Filter Board 20A EMC FCC Safety Regulation Automotive Audio High-frequency

Circuit Introduction: The circuit consists of three parts, the first part is the first stage LC filtering circuit, the second part is the common mode EMI filtering, and the third part is the second stage LC filtering circuit. LC filtering, commonly known as passive filtering, is a traditional DC power supply harmonic compensation device composed of inductors and capacitors. It can filter out harmonics in the power supply single or multiple times and purify the DC power supply For some users, there is a fast transient group pulse interference with a repetition frequency of several kilohertz on site The problem can have a suppressive effect The PCB specification is FR4 42 * 77 * 1.6mm, with the shortest design for high current circuits, short paths, and the ability to withstand higher currents with less external interference. There are four specifications of inductors available: 2A.4A.10A.20A. Input: DC not exceeding 50V (higher voltage can be increased by replacing electrolytic capacitors) Output: DC Current: 20A Main component specifications: Circuit board: double-sided FR4 fiberglass board Electrolytic capacitor: 50V470UF Dosage 2 PCS Thin film capacitor: 100NF2PCS 470 PF 1PCS Magnetic ring inductor: dosage 2PCS, (choose iron silicon aluminum for 20A high current), Common mode inductance; Dosage 1PCS, (20A high current using flat copper with inductance) Socket: 7.62 sockets, 2PIN and 3PIN, each with 1PCS This module is suitable for eliminating DC power sources with electromagnetic interference and can be applied to cars, motorcycles, and DC circuits with strong electromagnetic interference

• This module is suitable for eliminating DC power sources with electromagnetic interference and can be applied to cars, motorcycles, and DC circuits with strong electromagnetic interference
• The circuit consists of three parts, the first part is the first stage LC filtering circuit, the second part is the common mode EMI filtering, and the third part is the second stage LC filtering circuit.