[sdiy] Noob Question: Passive Filter Design

[Magnus Danielson]

On 05/04/2010 05:46 AM, Sam Ecoff wrote:
> Hi All,
>
> So, I'm still slogging slowly through an EE degree, and we've gotten up
> to the point where we're discussing passive filter design, and we've
> learned how to construct passive highpass, lowpass, bandpass, and band
> reject filters using various combinations of resistors, caps, and
> inductors. Have seen a fair number of filters, I asked my professor what
> the advantages/disadvantages of using caps vs. inductors are, especially
> as the discussion relates to audio circuits, but he was unable to answer
> that. Can anybody help me out? It would be especially helpful if anybody
> has a suggestion for further reading.
>
> Thanks!

Another concern may be that they can inter-act to form transformers and 
you end up with a different circuit than you anticipated.

While it is not a bad thing to know how it works, the practical usage of 
the knowledge for inductors is low in the audio field, more useful in HF.

Proceed to op-amp filters for your audio-work.

Cheers,
Magnus