How to correctly choose the magnetic ring and what is the function of the magnetic ring The following content is sorted out by the small editor, and the relevant content is for reference.

Absorbing magnetic ring, also known as ferrite magnetic ring, is often used for detachable separation of magnetic ring, it is a common anti-interference component in electronic circuits, for high frequency noise has a good inhibitory effect, generally using ferrite material (MN-Zn) made. The magnetic ring has different impedance characteristics at different frequencies. Generally, the impedance is small at low frequencies, but the impedance of the magnetic ring increases sharply when the signal frequency increases. So that the normal useful signal is very good through, and can be very good to suppress the high frequency interference signal through, and the cost is low.

We can often in the power cord, USB cable, digital transmission line equipment with a cylindrical thing, I have been peeled off it is an iron ring, a lot of people don't know what does this thing, and, of course, a lot of times to remove also does not affect the normal use, that what is this thing that, circular and play a important role in it? Simply put, it is the magnetic ring, anti-interference ring, or absorption ring, ferrite ring, which plays the role of filtering, filtering out high-frequency clutter.

Why set anti-jamming magnetic ring? The motherboard, CPU, power supply, and IDE data line in the computer case are working at a very high frequency state, so there are a lot of space stray electromagnetic interference signals in the case, and the signal strength is several times to dozens of times outside the case! USB cable without magnetic ring in this space is not shielded measures, so these USB cables become a good antenna, receiving a variety of messy high-frequency signals in the surrounding environment, and these signals superimposed on the original transmission signal, or even change the original transmission of useful signals, prone to problems.

In order to improve the transmission rate and stability, and to reduce the transmission lines when transmitting data to other devices, such as the interference of sound card, designed the electrostatic shielding layer, the shielding layer is made up of a thin metal foil or more strands of fine woven wire mesh, the application of magnetic ring is the surface effect principle of electrostatic field, and data transmission line is the appearance of bread a layer of metal film, And the shielding layer and the case for ground, can be a good data line and space interference signal isolation!