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From the post:

>I have recently been working on tuning circuits, which typically consist of an inductor and a capacitor (i.e. an LC circuit). For those not familiar with inductors, they are passive components that store energy in a magnetic field. They oppose changes in current, meaning that they pass direct current (DC) and block alternating current (AC).

Archive: https://archive.today/itfER From the post: >>I have recently been working on tuning circuits, which typically consist of an inductor and a capacitor (i.e. an LC circuit). For those not familiar with inductors, they are passive components that store energy in a magnetic field. They oppose changes in current, meaning that they pass direct current (DC) and block alternating current (AC).
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[–] • 2 pts

You can, yes...but if you want something unusual, or want to build your own devices then you may need to wind coils. This used to be a thing when hobby electronics was big before and directly after WWII - people wanted radios to listen to, or wanted to do other things with electronics.

But what said is pretty much what you need to know about the subject.