[sdiy] QVCO schemo up

[James Patchell]

But not very different from the one in the Nov/Dec issue of Polyphony 1980 
on page 26 .... :-).... or on page 80 of the Analog Devices Nonlinear 
Circuits Handbook...

At 10:30 PM 11/11/2005 +0100, JH. wrote:
>Ahh, that's a wonderfully _small_ circuit!
>If it produces such low THD over the required frequency range, it's really
>interesting. And I don't see any reason why the THD should depend on
>frequency, so ...
>Quite different from the Tietze/Schenk circuit indeed.
>
>JH.
>
>
>
> > Here's the quadrature VCO I discussed yesterday.  Please don't take the
> > indicated signal labels too literally -- they just indicate the
> > correspondence of the circuit to the diff eqns, not the actual voltages.
> >
> >    Ian
> >
> > http://home.earthlink.net/~ijfritz/xfer.htm
> >
> >

         -Jim
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