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ZengLei
Joined: 24 Jan 2006
Posts: 99
Location: WuHan China PR
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 05 Jul 2008 11:05 what's a ferrite bead? Is it a Inductor? |
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I often see that many persons use a ferrite bead to connect analog gud and digitial gnd,what'a a ferrite bead?
in a circuit it's symble is the same toa inductor,,
soo,Ferrite Bead=Inducor??
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FvM
Joined: 22 Jan 2008
Posts: 2161
Helped: 365
Location: Bochum, Germany
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| 05 Jul 2008 11:44 Re: what's a ferrite bead? Is it a Inductor? |
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| Basically, it's a lossy inductor, specified by an impedance value (e. g. @ 100 MHz) rather than an inductance. Types with different frequency characteristics are available. At lower frequencies up to several MHz, the behaviour is pure inductive.
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insrusingh
Joined: 08 Jul 2008
Posts: 14
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| 20 Aug 2008 8:38 what's a ferrite bead? Is it a Inductor? |
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| I has iron core inside,as a ferromagnetic material.So what happens at higher frequency it 100MHz it offers a high resistance and does ot allow to pass through.So basically it is used as a filter for power pins of iC.
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