[sdiy] Hopf bifurcation VCOs

[Ian Fritz]

At 12:07 PM 11/11/05, Don Tillman wrote:

>It's very easy to get quadrature sines from the QuadTrap VCO -- sum
>the quadrature trapezoid outputs to make quadrature triangles and use
>a couple OTA's to shape the quadrature triangles to sines.

Right.  I mentioned shaping triangles in the original post.

I very much like your trap VCO and I especially appreciate its through-zero 
capability.

   Ian