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shielding material | How does electromagnetic shielding work?
Electromagnetic shielding is the use of shielding materials to block or attenuate the transmission of electromagnetic energy between the shielded area and the outside world. The principle of electromagnetic shielding is to use the shielding body to reflect, absorb and guide the electromagnetic energy flow, which is closely related to the charges, currents and polarizations induced on the surface of the shielding stru
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Features of Powder Core
Iron powder core is a metal magnetic powder core, which is composed of iron powder and insulating medium, and is mainly used in electrical circuits to solve electromagnetic compatibility (EMC) problems. In practical application, various other substances will be added according to different filtering requirements in different frequency bands. The clutter on the wire is mainly solved by the magnetic ring to solve its
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What are the types of Shielding Material?
According to different shielding purposes, shielding bodies can be divided into three types: electrostatic shielding bodies, magnetic shielding bodies and electromagnetic shielding bodies. The materials and functions of the three shields are as follows: 1. Electrostatic shielding body: made of inverse magnetic materials (such as copper, aluminum), and connected to the ground. The role of the electrostatic shield is t
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The role of common mode inductance is far more important than you think
In addition to the large impedance and insertion loss under the earth's magnetic field, which has an excellent inhibitory effect on Ruoduo interference, the common mode inductance exhibits a resonance-free insertion loss characteristic in a wide frequency range. It is precisely because of this characteristic that We summarize it as an inductance commonly used in switching power supplies for computers to filter co
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How Common Mode Inductors Reject Common Mode Signals
At present, it is known that the common mode signal is two signals with the same amplitude and the same phase. The common mode signal generally comes from the power grid. The common mode signal will affect the normal operation of the circuit board, and will also interfere with the surrounding environment in the form of electromagnetic waves. Since an inductor is used to suppress common-mode signals, it must be relat
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