Enlighten a total novice

[Tony Clark]

> >   Most of us don't build circuits that would fall into the category of 
> >needing super clean circuit boards.  I'd certainly would like to know of 
> >a synth circuit that falls into that category.
> >
> OK, here's one: try getting the full (one million to one) ratio out of
> an integrator/switch type VCO.
> At the low end, those leakage currents integrate all right..

   Well most of us don't need a VCO that runs that wide of a range.  Ask 
anyone with an Aries what tuning a 10 octave range on a single turn pot 
is like.  Anyway, my current rosin-flux soldered rat-shack PCB VCO 
operates from 0.091 Hz to 400 kHz (even with the expo converter on a 
separate board 6 inches away) which is quite adequate enough for me.  I'm 
quite sure I can get more range out of it if I run it at higher currents, 
and utilize a larger cap AND if I used a properly designed PCB with a 
copper pour shield around the integrator input pins and the expo-converter.
   But like I mentioned before, I don't see any reason to have a VCO that 
runs that wide, and especially for the novice, they shouldn't expect to 
get that kind of performance, so I still attest that rosin-core is 
perfectly safe and usable.

   Type "44" forever...

   Tony

------------------------------------,----------------------------------
I can't drive (my Moog) 55!         |     The E-Music DIY Archive
------------------------------------|  
Tony Clark -- clark at andrews.edu     | aupe.phys.andrews.edu/diy_archive
http://aupe.phys.andrews.edu/~clark |     Contributions welcomed!
------------------------------------'----------------------------------