Ferrite is an electromagnetic material with high permeability, high resistivity and low cost, which is widely used in electronic devices, especially in the EMC field. Ferrite magnetic ring is a common ferrite material with high permeability and low coercivity, which can effectively suppress electromagnetic interference and improve the electromagnetic compatibility of equipment.
1. The principle of ferrite magnetic rings.
A ferrite ring is a toroidal device made of ferrite material, which has the advantages of high permeability, high resistivity, and low cost. When the current passes through the ferrite magnetic ring, the magnetic field is confined to the inside of the magnetic ring, which does not cause interference to the outside world and can effectively suppress electromagnetic interference. In addition, the ferrite magnetic ring also has a high impedance, which can prevent the intrusion of electromagnetic interference and improve the electromagnetic compatibility of the equipment.
Second, the application of ferrite magnetic rings.
1.Power supply interference is suppressed.
The power supply is one of the most important components of an electronic device, but it is also often the most susceptible to electromagnetic interference. The ferrite ring can effectively suppress power interference and improve the electromagnetic compatibility of the equipment. The ferrite magnetic ring installed on the power line can absorb high-frequency electromagnetic interference, reduce the noise voltage on the power line, and ensure the normal operation of the equipment.
2.Suppress signal line interference.
Signal lines are an important channel for transmitting signals in electronic devices, but they are also often one of the most susceptible to electromagnetic interference. The ferrite magnetic ring can effectively suppress the interference of the signal line and improve the signal quality of the equipment. The ferrite magnetic ring is installed on the signal line, which can absorb high-frequency electromagnetic interference, reduce the noise voltage on the signal line, and ensure the transmission quality of the signal.
3.Suppressed radiated interference.
Electronic devices can produce radiation interference when working, which will have a certain impact on the surrounding environment and human health. The ferrite magnetic ring can effectively suppress radiated interference and improve the electromagnetic compatibility of the equipment. The installation of ferrite magnetic ring on the equipment shell can absorb the radiation energy generated by the equipment, reduce the intensity and frequency of radiation interference, and ensure the health and safety of the equipment and the human body.
Ferrite magnetic rings are a common ferrite material with the advantages of high permeability, high resistivity, and low cost. In the EMC field, ferrite rings are widely used to suppress power supply interference, signal line interference, and radiated interference. By installing a ferrite magnetic ring, the electromagnetic compatibility of the equipment can be improved, and the normal operation of the equipment and human health and safety can be guaranteed.