Article View: sci.electronics
Article #8867Re: low pass high pass ckts. (Baxandall)
From: Mark G. Johnson
Date: Tue, 11 Dec 1990 02:45
Date: Tue, 11 Dec 1990 02:45
17 lines
1350 bytes
1350 bytes
In article <1990Dec10.155837.17985@engin.umich.edu> ssave@caen.engin.umich.edu (Shailendra Anant Save) writes:
>
> Is anyone familiar with "backsendall" (sp?) circuits?
>These are low pass and high pass attenuators/amplifiers
>that you can set to a particular frequency at both the
>ends and use potentiometers to increase or decrease
>the db level.
I think you're referring to Peter J. Baxandall who developed
a "shelving" topology for use in audio tone controls. You might
find what you're looking for in National Semiconductor's
application note number AN-64, Figures 21 thru 23. It's reprinted
in their "Linear Applications Handbook."
--
-- Mark Johnson
MIPS Computer Systems, 930 E. Arques M/S 2-02, Sunnyvale, CA 94086
(408) 524-8308 mark@mips.com {or ...!decwrl!mips!mark}
Technical Details
Message-ID:
<43961@mips.mips.COM>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!mips!hal!markReferences:
<1990Dec10.155837.17985@engin.umich.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!mips!hal!mark From: mark@mips.COM (Mark G. Johnson) Newsgroups: sci.electronics Subject: Re: low pass high pass ckts. (Baxandall) Keywords: low pass filters,high pass filters. Message-ID: <43961@mips.mips.COM> Date: 11 Dec 90 02:45:28 GMT References: <1990Dec10.155837.17985@engin.umich.edu> Sender: news@mips.COM Reply-To: mark@mips.COM (Mark G. Johnson) Distribution: usa Organization: MIPS Computer Systems, Inc. Lines: 17