Schematic Request

[Sean Costello]

Martin Czech wrote:
> 
> >Set your browser to:
> >
> >http://www.haint.com/synth-diy/ob1filt.pdf
> 
> I did! I guess the U(n) are our friend 3080?
> The pinout says so.

I have no more evidence than what is on the page, but the pinout suggests a 3080
to me, too. I suppose you could substitute in the OTA of your choice (NJM13600
is nice and cheap). No idea what the FETs are, but looking at similar filter
designs should suggest some possibilities.

Sean Costello