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A filter circuit is an electronic circuit made using capacitors and inductors. It is designed to produce a restriction on the frequency-bandwidth of an alternating input signal - such as, for example, a wireless/radio signal - to produce a narrower frequency- bandwidth as its output.

Another common use of an electronic filter circuit is to remove most of the ac ripple which remains in the output of a diode-based ac rectification circuit so that the resulting is of better quality.

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12y ago

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