I think that's for active filters only.  And I also believe it's for WinX=
X=20
users only.

Cheers,
-Neil.


On Tuesday 30 March 2004 04:28 pm, Dipperstein, Michael scribbled:
> Isn't this one of the things that Microchip's Filter Lab was supposed t=
o be
> able to do for you?
>
> -Mike
>
> -----Original Message-----
> From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.ED=
U]
> On Behalf Of Picdude
> Sent: Tuesday, March 30, 2004 2:01 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [EE:] RC filter calculations?
>
>
> For some reason, I can't find (thru google) the formula for calculating=
 the
> best values of R's and C's in this circuit for a given cutoff frequency=
=2E..
>
>    >----`\/\/\,----o----`\/\/\,-----o------>
>
>            R1      |       R2       |
>                   ---              ---
>                C1 ---           C2 ---
>
>    >---------------o----------------o------>
>
> Any of you have the formula?
>
> Thanks,
> -Neil.

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