SV: Re: [sdiy] QVCO schemo up

James Patchell patchell at cox.net
Sat Nov 12 03:43:16 CET 2005


I originally took the circuit from AD when I wrote my article...and changed 
the multipliers to CA3280E's...I would say the credit goes to AD... :-)

If you look at my article...I give three references...the top one being 
Analog Devices.

At 01:40 AM 11/12/2005 +0100, karl dalen wrote:
>So, to whom shall i give the DIY nobel price? Ian, Jim, AD?
>
>KD?
>--- Ian Fritz <ijfritz at earthlink.net> skrev:
>
> > At 03:00 PM 11/11/05, James Patchell wrote:
> > >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...
> >
> > Yep, there it is.  Fig. 9, p.80, NCH.  Exactly the same circuit.
> >
> > (I didn't save my Polyphonies.  Was that one of your contributions,
> > Jim?  Is it up anywhere?)
> >
> > I had another, cruder version in ENotes #82 (1977). It limited against the
> > supply rails and had a fair bit of distortion.
> >
> > Thanks!
> >
> >    Ian
> >
> >

         -Jim
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