[sdiy] Using non-linear passives

[cheater00 cheater00]

Maybe you could add an inductor or some other "anti capacitor" in series to
cancel out most of the capacitance of our non linear capacitor. This
opposing part would have to not depend on dc. Then the dc dependent
capacitance of the non linear caps would be a much larger part of the whole
effective capacitance.

On Thu, 6 Apr 2017 22:22 Mattias Rickardsson, <mr at analogue.org> wrote:

> Maybe some kind of "differential" mode could expand that octave into a
> larger range?
>
> Daft idea anyway, for synthesis. :-) But it wouldn't be surprising if some
> clever constructions actually utilise the voltage dependency in order to
> auto-stabilize some frequency etc.
>
> /mr
>
>
> Den 6 apr. 2017 8:31 em skrev "Richie Burnett" <
> rburnett at richieburnett.co.uk>:
>
> You wouldn't be able to sweep your filter over a very large frequency
> range though.  The change in capacitance is one decade at most even for the
> smallest package sizes with the crappiest dielectric material.
>
> -Richie,
>
>
> -----Original Message----- From: Mattias Rickardsson
> Sent: Thursday, April 06, 2017 4:38 PM
> To: Michael Zacherl
> Cc: synth-diy mailing list
> Subject: Re: [sdiy] Using non-linear passives
>
> On 5.Apr 2017, at 17:04 , cheater00 cheater00 <cheater00 at gmail.com> wrote:
>
> So effectively a DC bias could create a voltage controlled filter just
> like that
>
>
> Almost like in the Moog ladder filter. :-D
>
> /mr
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