[sdiy] ICL8038 VCO?

[laxt57 at aol.com]

 Hi Scott
  Mr. Henry's site is alas, no more!
 Jeri
-----Original Message-----
From: Scott Gravenhorst <music.maker at gte.net>
To: synth-diy at dropmix.xs4all.nl
Sent: Thu, 07 Jul 2005 07:02:22 -0700
Subject: Re: [sdiy] ICL8038 VCO?


They have a reputation for not being very linear.  Thomas Henry has a
circuit at: http://www.midwest-analog.com/diylvco.html but this is a
_linear_ CV circuit, not expo.  This circuit linearizes the device. 

Have I tried it?  No, I have some ICL8038 here, and I want to - when I
finally have some time.  I like the multiwaveform feature of the chip.  

Some here have made LFOs out of them.

<rkmoore at memphis.edu> wrote:
>Has anyone successfully used an ICL8038 function generating IC (or any
>variant, like the AD MAX038) to make a VCO?  They're not cheap (about
>$7), but it looks like you could easily make a wide range multiwaveform
>VCO with really clean output and FM.  Is there a catch that I'm not seeing?
>
>Thanks,
>
>Richard Moore
>

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