SPECIFICATIONS

2A 4A 10A 18A AC EMI Power Filter AC High Frequency Filter Module Anti-electromagnetic Interference Filting DC Component

Features:

1.Adopting two-stage filtering results in better noise removal
2.This module can be used in conjunction with a decoder or power amplifier to filter high-frequency noise from the power supply
3.It can eliminate mains interference, purify the power supply, significantly improve the sound quality of the power amplifier, enhance resolution, and make the background quiet.
4.The main function is to eliminate differential mode interference, with a capacity range of 0.01UF to 0.47UF
5.Available in four specifications: 2A, 4A, 10A, and 18A, convenient to use, easy to operate, and easy to connect and use

Parameters:

Name: Secondary Common Mode EMI Power Filter
Input voltage: single-phase DC 110-250V
Output voltage: single-phase DC 110-250V
Rated load current: 2A, 4A, 10A, 18A, 4 specifications available
Input port: Three wire 7.62 socket input
Output port: 2-wire 7.62 socket output

Product Introduction:

The internal circuit of a two-stage composite EMI filter uses two-stage (also known as two-stage) filtering, resulting in better noise removal effect. It can effectively suppress the problem of rapid transient group pulse interference with a repetition frequency of several thousand hertz in certain user sites.
This module, when used in conjunction with a decoder or power amplifier, can filter high-frequency noise from the power supply, eliminate mains interference, purify the power supply, significantly improve the sound quality of the power amplifier, enhance resolution, and make the background quiet.
The input GND needs to be connected to the ground wire of the power cord, and can also be connected to the chassis shell. Depending on the specific situation, please pay attention to the direction when welding the common mode inductor. Please install and weld according to the markings on the circuit board and the baby picture.

Common knowledge of high-frequency electromagnetic interference EMI filters:

For high-frequency electromagnetic interference (EMI), generally three technologies can be used for power filtering to suppress interference noise. In practical use, two or even multiple technologies are often mixed. They are:
Add a capacitor, also known as the X capacitor, between the live and zero lines of the power supply. Select X2 type, mainly used to eliminate differential mode interference, with a capacity range of 0.01UF -0.47UF.
Add capacitance between the power cord and ground wire, i.e. Y capacitance. Select Y2 type, mainly to eliminate common mode interference, with a capacity range of 2200pF~0.1 μ F. To reduce leakage current, the capacitance should not exceed 0.1 μ F. This circuit board uses 3300PF.
Common mode suppression, common mode inductance (suppression coils on two power lines). When the rated current is high, the wire diameter of the common mode choke should also be correspondingly increased to withstand larger currents. In addition, increasing the inductance appropriately can improve the low-frequency attenuation characteristics, and this line adopts 10MH.

Package include:

1X filter