[sdiy] Improved VCO Posted

[Tim Parkhurst]

*VERY* cool stuff, Ray. Thanks for sharing all your circuits with us. I'm
impressed by the depth and breadth of all you've done on your site. Think
I'm gonna have to whip up a few of those nifty LFO circuits you've got (you
can NEVER have too many LFOs). 

Thanks again for sharing. This is one of the better examples of what I like
about the DIY community and SDIY in particular!


Tim Servo


> -----Original Message-----
> From: Ray Wilson [mailto:rayw at csd.net]
> Sent: Friday, October 03, 2003 10:41 AM
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] Improved VCO Posted
> 
> Hi DIYers
> 
> I improved my "Improved & Updated VCO" a bit more.
> 
> Still uses CA3046 but now uses a separate Op-Amp for the pulse wave
> comparator.
> http://atlas.csd.net/~rjwsoft/OctVCO_FixedSquare.html
> 
> Uses LM394 super-matched pair and uses a separate Op-Amp for the pulse
> wave
> comparator.
> http://atlas.csd.net/~rjwsoft/OctVCO_LM394_FixedSquare.html
> 
> I suggest that if you build these you try LF444 and LF442 instead of TL0's
> for lower power consumption. Also if you have a 2K tempco then use 100Ks
> for
> the control voltage inputs. My tempco is 1K (PT146) and thus the 49.9K
> inputs.
> 
> Enjoy
> 
> Ray



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