Magnetic beads [Repost] What are magnetic beads and the principles and applications of magnetic beads Classification: Hardware What are magnetic beads Magnetic beads have high resistivity and permeability. They are equivalent to resistors and inductors in series, but the resistance and inductance values vary with frequency. They have better high-frequency filtering characteristics than ordinary inductors, and are resistive at high frequencies, so they can maintain high impedance in a fairly wide frequency range, thereby improving the FM filtering effect. As a power supply filter, an inductor can be used. The circuit symbol of the magnetic bead is an inductor, but the model shows that a magnetic bead is used. In terms of circuit function, the magnetic bead and the inductor are the same in principle, but the frequency characteristics are different. The magnetic bead is composed of an oxygen magnet, and the inductor is composed of a magnetic core and a coil. The magnetic bead converts the AC signal into heat energy, and the inductor stores the AC and releases it slowly. Magnetic beads have a greater blocking effect on high-frequency signals. The general specifications are 100 ohms/100mMH Z. Its resistance is much smaller than that of the inductor at low frequencies. Ferrite beads are a type of anti-interference component that is currently developing rapidly. They are cheap, easy to use, and effective in filtering out high-frequency noise. In a circuit, as long as the wire passes through it (……
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