Message-ID: <8aaff84f-d8cc-6f94-d971-d3f1ded2b47b@earthlink.net>
Date: Thu, 11 Aug 2022 10:33:15 -0500
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Subject: Re: [geda-user] Active filter
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To: geda-user AT delorie DOT com
References: <20220811143644 DOT 13DD38248090 AT turkos DOT aspodata DOT se>
From: "David W. Schultz (david DOT schultz AT earthlink DOT net) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Organization: State of Total Disorganization
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On 8/11/22 9:36 AM, karl AT aspodata DOT se [via geda-user AT delorie DOT com] wrote:
>   I have been looking into active filters and made this:
> http://aspodata.se/git/openhw/bin/act_filter.pl
> 
> It seems different sources gives me slightly different values
> and most seem to gloss over the theory makeing it somewhat hard
> to know if the calculations the program does are correct.
> 
> If you are interested in this, please contact me.
> 
> Regards,
> /Karl Hammar
> 
> 
My go to reference is the "Active Filter Cookbook" by Don Lancaster. 
(Who else?)

If I need something not covered there, then it is time to dust off the 
ol' college text by Van Valkenburg

-- 
http://davesrocketworks.com
David Schultz