[sdiy] Ladder filters using different different filter topologies.
lanterma at ece.gatech.edu
Tue Aug 27 09:16:47 CEST 2019
> On Feb 8, 2019, at 4:20 AM, Ben Riggs <benalog1977 at gmail.com> wrote:
> Basically, I’m trying to nut out a Sallen-key filter using diodes as current controlled resistors in a ladder/differential topology to remove the CV-bleed… but I can’t help but think I’ve seen it before.
I don’t think it’s what you’re looking for, but I seem to recall that the Steiner-Parker filter is somewhat along those lines.
It’s also not what you’re looking for, but the GX-1 VCF is Sallen Key-is with a diode bridge control element.
Maybe you’re looking for the patents cited on Don’s page here?
Aaron Lanterman, Prof. of ECE, Georgia Tech
My blog on Education and Innovation: https://edupocalypsenow.wordpress.com
My blog on Electronics and Programming: https://lantertronics.blogspot.com
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