[sdiy] interesting expo design

[Michael Ruberto]

Jim this is exactly what I was thinking, I just thought it too late ;)
it's a really nice design too. please do keep me posted.

thanks
~M

>
>     Been there...Done that...sorta...
>
>     I saw that article some months back, and the solution I came up with 
>is here:
>
>http://www.silcom.com/~patchell/seqproj/1001013.pdf
>
>     On page 10.  I used a single LM13700 (although both OTAs are used) as 
>the VCA.  The boards
>that this is on will be in my greasy little hands in a couple of days.  
>Earlier experments say
>this should work really good.  I will keep you posted as to the results.
>
>Michael Ruberto wrote:
>
> > this is interesting, check it out:
> >
> > 
>http://www.e-insite.net/ednmag/index.asp?layout=article&articleid=CA178103&industryid=2281
> >
> > the problem I see with this approach is adding in external CVs. I 
>suppose it
> > could be done using a very precise VCA. the external CV's can be summed 
>into
> > the VCA's CV input and the reference from IC3 connected to IC1's + input
> > through the VCA? hmmm I imagine there would have to be some offset
> > correction too.
> >
> > may have to experiment with this...
> >
> > ~M
> >
> > _________________________________________________________________
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>
>--
>  -Jim
>------------------------------------------------
>* Visit:http://www.silcom.com/~patchell/
>*-----------------------------------------------
>*I'm sure glad Merry Christmas comes just once a year
>* -Yogi Yorgensen
>------------------------------------------------




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