Power Filter Board with 4A EMI Filter – Sound Improvement Tool, Filter Socket, Double-Sided Immersion Gold PCB

Power filter board 2A 4A 18A EMI filter, sound booster, filter socketThe kit needs to be welded, plus 3 yuan for replacement welding.

PCB is a double-sided gold PCB with lower internal resistance and better electrical conductivity

adoptImported Italian AVFilm capacitors, the effect is better than yellow ordinary imports and Swedish RIFA industrial capacitors, thick copper wire common-mode inductors, high-power connectors! 2A current capacity, used with decoders, soft sound, obvious improvement resolution, clean background

4A and 18A are suitable for power amplifiers and other power-hungry devices

3-Wire plug as input: connect AC GND AC separately

2-Wire plug for output 220V

Link directly at 220V with transformer. Sound details are clean! Parts need to be welded by hand!!

PCB size: 32X63MM

Weight: about 24g

Yes.2AKit and4AKit optional, 2A for headphones, front stage, DAC. 4A 18A for power amplifier

4A oxygen-free copper filter common mode inductor

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18A is suitable for high-power power amplifiers, Class A, etc., with ultra-low internal resistance. Even a 100W power amplifier is very beneficial. The picture below is 18A.

Italian AV safety filter capacitor, the effect is better than the general French Thomson, Swiss RIFA, and the high frequency built-in is lower.

Introduction: With the development of electronic technology, high-power electrical appliances, switching power supplies, and other high-frequency electromagnetic interference problems have become extremely difficult problems in circuit interference. They interfere with each other and self-interfere, causing power supplies to be polluted by high-frequency EMI, causing equipment to operate unstably, and restarting frequently.In this context,EMI filters have been designed to greatly improve this situation.

Subject:For high-frequency electromagnetic interference (EMI), there are usually three techniques for power filtering to suppress interference noise. In practical use, two or even multiple techniques are often mixed. They are:

1. Add a capacitor between the zero wires of the power supply fire, that is, the X capacitor.

2. Add a capacitor between each power line and the ground line, that is, a Y capacitor.

3. Common mode rejection (suppression coils on two power lines).

This one is designed by our store.EMI filter,It's a combination of these three technologies.,It allows low-frequency useful signals to pass smoothly, while suppressing high-frequency interference.Although the current is not large, only 2A (400W)/4A (800W), it is only suitable for equipment with small operating current, but with extremely high power requirements, such as low-power front stage, desktop CD, DAC decoder camera and other equipment input AC power purification. It can suppress power grid noise and high-order harmonics and noise and high-frequency harmonics generated by switching power supplies, motors, etc. Improve the purity of audio sound quality and reduce the noise generated by AC power interference.

Installation location:Power cords are the main way to interfere with incoming and outgoing devices. Through power cords, interference from the power grid can enter the device and interfere with the normal operation of the device. Similarly, the interference generated by the device may also be transmitted to the power grid through the power cord, interfering with the normal operation of other devices. Therefore,The ideal installation location is the power socket of the device, such as before the audio equipment transformer, before switching the power supply, and the power port on the back of the monitor.