[sdiy] CEM 3340 as lfo, CA3080 as tri->sin (barry klein) hey that rhyms...

[TooManySynths]

Hi All,

What's the correct way to scale a 3340 down to LFO
range?  I tried just summing -15 through a 10k
resistor with the other CV inputs, but it still only
goes down to about 2hz. 


I added the tri->sin converter from barry klien's
book. If you have the book it's on page 105.  At any
rate the 3080 just pumps out a huge square wave.  This
circuit has been sitting for a couple of weeks and I
thought perhaps I'd look at it again and be able to
see what I was missing.  I can't!  If I increase the
resistance to pin 5, which I thought this would lower
the current, hence lower the gain, it still looks like
a square wave.  If I just touch pin 5 and the input
resistor lightly, it seems to settle down a bit, but a
five meg resistor didn't change it at all.  So, I
thought maybe the input level is too high, and lowered
that by feeding it through a voltage divider to
ground.  It eventually just stops working.  Any ideas?


Thanks
Daryl







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