What is a ferrite bead? How is it different from an inductor? How is it rated? What are its important parameters? What allows me to chose between an inductor or ferrite bead to filter out frequencies that are greater than 8kHz in a signal with a current in milli amps?(The signals here i'm referring are input and output signals of a DC/DC Converter)
Electronic – Regarding Ferrite Bead
ferrite-beadinductorpower electronics
Best Answer
Here's a fairly generic picture of a ferrite bead: -
Ferrite beads tend to be useful from 10 MHz onwards. At 8 kHz they are generally useless.