Description: 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 Supply Common Mode Filtering Can Address The Problem Of Rapid Ient 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 Specifications: 20a. Features: 1. Small And Exquisite 2. Reliable Performance 3. Low Consumption 4. Wide Range Of Use 5. Shortes