Smd Radial
Second band pass filer?
I want a second band pass filer to pass only those frequencies at 5khz. I supose I need 10mH, but I'm going to purchase both a 10mH and 10uH just to make practical testing.
My problem comes to choosing the right choke (inductor). Obviously, the supplier does not sell any "FILTER" chokes at the range of 10mH nor 10uH. I appologize for the language. They have categorized the chokes with a ring shape as "filter" chokes. The other 3 options are SMD, radial and axial chokes. Which one of these should I pick, how do I determine which one I should pick and why do they come in different shapes? (So far I understand that the "filter" chokes reduce the magnetic radiation).
In what type of applications are usually axial or radial chokes chosen instead of SMD?
Are SMD chokes strictly for mounting on silicon chips?
Who am I? A student in mechatronical engineering.
The shape of the choke is irrelevant to filter design. And how it's labeled is also irrelevant.
Why are you concentrating on 10 mH and 10 µH, differing by a factor of 1000 ?
Check the self resonant frequency of the choke, it should be higher by a factor of 10 than your highest frequency of interest.
You can make BP filters out of opamps, resistors and capacitors, no inductors needed.
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