[sdiy] new to list with some questions

[P 23]

Thanks you Scott for the info. Well im trying to build a synth from
scratch so I will not be adding this to the Fatman. You brought up
some new questions though. How do you match transistors? I still would
appreiciate info on the tempco.

Thanks again,
pete.


On Fri, 18 Mar 2005 12:22:07 -0700, Scott Gravenhorst
<music.maker at gte.net> wrote:
> Thomas Henry's 8038 Linear VCO ("Neat Linear VCO" on the same site)
> would also work and has tri, sine and square outputs, a nice
> complement to the FatMan's sawtooth VCOs.  This VCO also does not
> require a tempco resistor or any matched transistors.
> 
> If you want to use Tom Henry's VCO1 with a FatMan, you will have to
> use the Linear FM input for pitch CV.  The 1v/oct input won't scale
> correctly with a FatMan's linear Pitch CV output.
> 
> P 23 <23isgood at gmail.com> wrote:
> >Hi everybody my name is Pete. I have been very much enjoying the
> >reading here. There are some sharp folks here, I give you all much
> >respect. I am not totally new to the DIY scene, I have built the
> >standard Paia fatman and tweeked it with a dozen mods. Though when it
> >comes down to the math I am completely lost so im trying to stick to
> >building from schematics.
> >
> > At the moment im attempting to build a fairly simple vco from here,
> >
> > http://www.midwest-analog.com/vco1.html
> >
> >My question is where can I get tempco resistors (2k+3500ppm)?
> >I found these people and they will make them for you but it cost a
> >little to much for me at the moment.
> >
> >http://www.precisionresistor.com/
> >
> > 15 pc min @ $6.71 each. Thats about $100.00 when I only really need
> >one. I would love to have a few of them for future projects. Anyways
> >im also looking for other simple schematics for other modules, VCF,
> >VCA, EG etc.
> >
> >Thanks,
> >Pete
> >www.cubanpetemusic.com
> >
> 
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