 A ferrite bead at the end of a USB cable A ferrite bead is a passive electric component used to suppress high frequency noise in electronic circuits. Ferrite beads employ the mechanism of high dissipation of high frequency currents in a ferrite to build high frequency noise suppression devices. Ferrite beads may also be called ferrite cores, ferrite rings, ferrite EMI filters, or mistakenly as ferrous beads. Engineers often jokingly call them FCC goobers, or FCC lumps after their shape when attached to a cable. Image File history File linksMetadata Size of this preview: 800 × 600 pixel Image in higher resolution (3264 × 2448 pixel, file size: 1. ...
Image File history File linksMetadata Size of this preview: 800 × 600 pixel Image in higher resolution (3264 × 2448 pixel, file size: 1. ...
Note: USB may also mean upper sideband in radio. ...
A stack of ferrite magnets Ferrites are electrically non-conductive ferrimagnetic ceramic compound materials, consisting of various mixtures of iron oxides such as Hematite (Fe2O3) or Magnetite (Fe3O4) and the oxides of other metals. ...
Ferrite beads are similar to inductors in some ways, but work especially in an area that is parasitic for general purpose inductors. They essentially act as a high impedance, or "resistor" to high frequency EMI/RFI electronic noise. The absorbed energy is converted to heat and dissipated by the ferrite, but only in extreme cases will the heat be noticeable. An inductor is a passive electrical device employed in electrical circuits for its property of inductance. ...
An inductor is a passive electrical device that stores energy in a magnetic field, typically by combining the effects of many loops of electric current. ...
Ferrite beads are one of the simplest and least expensive types of interference filters to install on preexisting electronic cabling. For a simple ferrite ring, the wire is simply wrapped around the core through the center typically 5 or 7 times. Clamp-on cores are also available, which can be attached without wrapping the wire at all.
See also A balun, pronounced // (bal-un), is a passive electronic device that converts between balanced and unbalanced electrical signals, such as between coaxial cable and ladder line. ...
A Choke is an inductor designed to have a high reactance to a particular frequency when used in a signal-carrying circuit. ...
Radio Frequency Interference (RFI) is electromagnetic radiation which is emitted by electrical circuits carrying rapidly changing signals, as a by-product of their normal operation, and which causes unwanted signals (interference or noise) to be induced in other circuits. ...
A stack of ferrite magnets Ferrites are electrically non-conductive ferrimagnetic ceramic compound materials, consisting of various mixtures of iron oxides such as Hematite (Fe2O3) or Magnetite (Fe3O4) and the oxides of other metals. ...
A magnetic core is the core of an electromagnet or inductor. ...
A toroid is a doughnut-shaped object whose surface is a torus. ...
An unintentional radiator is any device which creates radio frequency energy within itself, which does not normally leave the device or its housing, unless it is damaged or malfunctioning. ...
External links Murata Manufacturing (æ‘田製作所) is a Japanese electronic part specialized producer in Nagaokakyo, Kyoto. ...
Examples of ferrite bead products Murata Manufacturing (æ‘田製作所) is a Japanese electronic part specialized producer in Nagaokakyo, Kyoto. ...
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