[sdiy] 4069 VCO again

[Jay Schwichtenberg]

While we're on the subject has anyone built this VCO using a CD4007 instead
of a CD4069?

Thanks
Jay

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of jbv
> Sent: Monday, October 04, 2004 1:52 PM
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] 4069 VCO again
>
>
> Hi,
>
> I have a couple more questions about the 4069 VCO
> described here :
> http://www.uni-bonn.de/~uzs159/vco4069.html
>
> - I didn't found anything about stability & calibration...
> any clue ?
>
> - I was wondering how this little thing would behave
> in a polyphonic context (several such VCOs in parallel)...
> any risk to see them lock together ? decoupling issues ?
>
> - how to modify it to accept 1V/oct VC from a uC + DAC
> + SH expo converter ? I guess it'll make the circuit even
> simpler...
>
> Thanks,
> JB
>
>