18A is Suitable for High-power amplifiers, Class A, etc., the internal resistance is extremely low, even if it is a 100W amplifier, it is also very beneficial.
Imported Italian AV film capacitors, the effect is better than yellow ordinary imports and Swedish RIFA industrial capacitors, thick copper wire common mode inductors, high power connectors!
3-wire plug is the input: AC GND AC
2-wire plug: output 220V
Connected directly at 220V with a transformer. Sound details are clean
PCB size: 32X63MM
Introduction:
With the development of electronic technology, High-frequency electromagnetic interference problems such as high-power electrical appliances and switching power supplies have become extremely difficult problems in circuit interference.
They interfere with each other and also interfere with themselves, so that the power supply is contaminated by high-frequency EMI. Strange fault problems such as unstable operation of the device, frequent restarts, and so on. In this environment, EMI filters have been designed to greatly improve this situation.
Topic: For high-frequency electromagnetic interference (EMI), there are usually three techniques for power supply filtering to suppress interference noise. In actual use, it is often mixed with two or even multiple technologies. They are:
1. Add a capacitor between the power supply zero line, that is, the X capacitor.
2. Add a capacitor between each power line and ground, that is, a Y capacitor.
3. Common mode rejection (suppression coils on two power lines).
The EMI filter designed by our shop is a combination of the above three technologies. It can make the low-frequency useful signal pass smoothly, and it can inhibit high-frequency interference. Although the current is not large, only 2A (400W) / 4A (800W), only for devices with low operating current, but for equipment with extremely high power requirements, such as low-power preamp, desktop CD, DAC decoder camera, etc. Input AC power purification. It can suppress noise and high-frequency harmonics generated by power grid noise and high-order harmonics, as well as switching power supplies and motors. Improve the purity of the sound quality and reduce the noise generated by AC power interference.
Installation location: The power cable is the main way to interfere with the incoming and outgoing devices. Through the power cable, the interference from the power grid can be transmitted to the device, which interferes with the normal operation of the device. The interference generated by the same device may also be transmitted to the power grid through the power cable. , interfere with the normal operation of other devices. Therefore, the most ideal installation location is the power socket of the device, such as the front of the audio equipment transformer, the front of the switching power supply, the power port on the back of the display.
Package
1pcs 18A EMI filter
