[sdiy] Cheap Midi->CV

[Ian Fritz]

At 03:19 AM 9/12/05, simon.oo.o at xs4all.nl wrote:

>In Hal Chamberlin's book there is an example of VCO performance. After
>calibration the frequency is 0.19% (3.3cents) off in the middle of the
>range, and the temperature drift is 0.11% (1.9 cents) per degree Celsius
>between 25 and 35 degC. So with a temperature difference of only 5 degC
>the tuning would already be 13 cents off. He calls this "nearly perfect".
>I wonder if VCOs can be made much more accurate these days?

Asolutely!!!  That's one of the things we have been doing here for the past 
few years.

http://home.earthlink.net/~ijfritz/sy_cir2.htm
http://home.earthlink.net/~ijfritz/sy_cir3.htm
http://home.earthlink.net/~ijfritz/sy_cir4.htm
http://home.earthlink.net/~ijfritz/sy_cir7.htm
http://home.earthlink.net/~ijfritz/sy_cir9.htm

   Ian