[sdiy] linearize OTA for VCF?

[Ian Fritz]

So the idea was that if you replace the lower resistors with current
sources, then the input structure would be similar to the CA 3280's input
structure? Certainly seems like it should work. Was the schematic for this
experiment posted anywhere?

  Ian

----- Original Message -----
>
> >     Hmm....I used current sources to run the diodes on a
> > 13700 and I thought I
> > didn't have any problem...maybe I better go back and take
> > a look.
>
> Which resistors did you replace ?
> Replacing *all* resistors with current sources *must* work.
> Replacing the two resistors to GND (lowest value, thus
> least ideal current source approximation) with current
> sources shows the mentioned, undesired effect.
>
> JH.