[sdiy] Noob Question: Passive Filter Design

Magnus Danielson magnus at rubidium.dyndns.org
Thu May 6 09:10:46 CEST 2010


On 05/04/2010 08:49 PM, David G. Dixon wrote:
>> "An active filter needs no inductors. Instead, op amps, resistors, and
>> capacitors are used for better results. Advantages include lower cost,
>> easy tuning, simple design, and modularity."
>>
>> It's at<http://www.amazon.com/gp/product/075062986X>.  Comments, anyone?
>
> I would guess that very few souls here would ever build a synth filter with
> inductors, especially when the alternative is so easy.  My personal attitude
> is that inductors should be reserved for VHF applications.

One of my favorite drum-machines use LCR resonators on the voice-board. 
Several 4 Hendry coils there...

Cheers,
Magnus



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