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Results tagged with ferrite-bead
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user 4512
A ferrite bead is a passive electric component, which is commonly used for suppressing high frequency noise in electronic circuits.
8
votes
Ferrite Beads Design
In this context, you can (sort of) think of a ferrite bead as being a frequency-variable resistor. The higher the frequency, the higher the resistance.
A resistor by itself doesn't attenuate anythin …
- 315k
7
votes
Accepted
Why do some computer power cables not have ferrite beads? What type is usually used?
A ferrite bead around a cable adds common mode inductance to the cable. The purpose is to increase the impedance of the cable at high frequencies. With higher impedance, less power can be radiated o …
- 315k
4
votes
Why does this low-cost battery powered device use ferrite beads on the power input?
Don't assume everything out there was designed by someone that really knew what they were doing, or that engineering decisions dominated.
Your photo gives the impression of some intern being told to …
- 315k
1
vote
Accepted
Won't the ferrite bead (L3) will restrict sudden power requirement of bluetooth module (U4)
They are telling you to put a ferrite bead between the power connection of this module and the power connection to the rest of the board. Perhaps they know the module is susceptible to power supply n …
- 315k