[sdiy] Quadrature Trapezoid VCO (What?!?!)

[Don Tillman]

Hi folks!

I have a new VCO design that I've been working on for a long time;
tweaking it, building it, testing it, debugging, and writing it up.

  http://www.till.com/articles/QuadTrapVCO

This is the one that gives you graceful thru-zero FM.  And nice
quadrature outputs.  And a few other features.

Enjoy!

(Also, I *believe* this is original.  Has anybody seen anything
remotely like it before?) 

  -- Don

-- 
Don Tillman
Palo Alto, California
don at till.com
http://www.till.com