[sdiy] Sine VCO

[patchell]

    Nov./Dec 1980 Polyphony...there is a quadrature Sine VCO circuit.  It uses
CA3280's, but you can use LM13600/13700 OTA's as well...and you can mode the
current source to give you what ever FM you like...I should find the original
of this and post it on my website...I thought I had, but I couldn't find it.

"Rönnberg, Niklas" wrote:

> I'm looking for a sine VCO. I don't want (or need) any other waveform from
> this VCO, but I guess that that is unavoidable. I also want the VCO to have
> an input for FM...
> I think that I saw a schematic once that was based on a LM13600. This VCO
> made a triangle wave, so maybe this would be a good start for a sine
> VCO(?).
>
> Can anyone help me pointing out a schematic or giving a tip on designing
> this circuit?
>
> Regards,
>
> Niklas

--
 -Jim
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