fuuton1
Newbie
Hi all,
I am in the process of selecting a ferrite bead for a low power application, signal filtering.
I have come across a few articles which I will link below detailing the selection procedure. However, I cant figure out where the capacitive region of the ferrite bead starts, using the impedance, reactance, resistance vs frequency curves. The capacitive region starts after the self resonant frequency of the ferrite but I cant seem to find a way to calculate the self resonant frequency using the info available in the ferrite datasheets.
How can one determine the frequency range over which the ferrite behaves as a capacitor using the info provided in the datasheets?
Any help in this regard will be highly appreciated.
Links of literature:
Regards.
fuuton
I am in the process of selecting a ferrite bead for a low power application, signal filtering.
I have come across a few articles which I will link below detailing the selection procedure. However, I cant figure out where the capacitive region of the ferrite bead starts, using the impedance, reactance, resistance vs frequency curves. The capacitive region starts after the self resonant frequency of the ferrite but I cant seem to find a way to calculate the self resonant frequency using the info available in the ferrite datasheets.
How can one determine the frequency range over which the ferrite behaves as a capacitor using the info provided in the datasheets?
Any help in this regard will be highly appreciated.
Links of literature:
Ferrite Beads Demystified | Analog Devices
In this article the author details several critical design techniques involved with implementing ferrite beads that must be considered to avoid resonance that can induce noise and ripple in the supply.
www.analog.com
EMC Basics: Chip Bead Ferrites & Reading Datasheets | Würth Elektronik: Electronic & Electromechanical Components > News > Blog: World of Electronics
In this second installment of our five-part blog series on EMC basics, we'll discuss chip bead ferrites and how to read a datasheet.
www.we-online.com
Regards.
fuuton
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