4A/10A/20A AC Power Filter EMI Electromagnetic Interference Filter EMC High Frequency Power Filtering for Audio Power Amplifier

Features:

1.Using high-quality materials and ensuring product quality

2.The first level is an RFI filter DC circuit, which filters the DC components in the AC power supply through two 50A bridge stacks and four 35V2200UF capacitors, suppressing the magnetic saturation or static current increase caused by the DC component transformer, resulting in buzzing noise

3.Differential mode filtering, with two differential inductors, performs differential mode filtering on the AC power supply to suppress mid to high frequency interference

4.First level common mode filtering, combining X2 capacitors and common mode inductors to form common mode filtering

5.Two stage common mode filtering, due to the use of two-stage (also known as two-stage) filtering, the effect of filtering noise is better. It can effectively suppress the problem of fast transient group pulse interference with a repetition frequency of several thousand hertz in certain user sites

Parameters:

Name: Audio power amplifier EMI Line filter

Input voltage: single-phase AC 110-250V

Output voltage: single-phase AC 110-250V

Rated current of load: 4A -20A

Input port: Three wire 7.62 socket input

Output port: 2-wire 7.62 socket output

Main parts selection:

X2 capacitor: 0.22UF 3PCS

Y2 capacitor: 275V 3300PF 2PCS

DC elimination capacitor: 35V 2200UF 4PCS, diameter 16MM

DC bridge reactor: 50A 1000V 2PCS

Differential mode inductance: 47UH 2PCS

Common mode inductance: 2 PCS

Resistance: 1 PCS

Socket: 7.62 2PIN, 3PIN, 1 PCS each

Package include:

1x Line Filter

Instructions for use:

Power amplifier audio Line filter circuit introduction: the circuit consists of three parts, the first part is RFI DC blocking circuit, the second part is differential mode EMI filtering, and the third part is common mode electromagnetic interference filtering circuit.

RFI DC blocking circuit: Eliminates interference from DC components of variable frequency air conditioners, switching power supplies, refrigerators, chargers, and other household appliances in AC 220V mains power. The RFI DC blocking circuit built with diodes and capacitors eliminates and blocks the DC component in the AC power supply of the mains, preventing the transformer from magnetic saturation or static current increase due to the DC component.

Note: Any direct current on an AC power supply usually causes most large circular transformer coils to emit buzzing sounds. Adding an RFI DC isolation circuit can significantly improve power quality, eliminate and suppress transformer buzzing sounds.

This module, when used in conjunction with a decoder or power amplifier, can filter the DC component of the power supply, eliminate and suppress transformer buzzing, high-frequency noise in the power supply, 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 casing, depending on the specific situation.