LFOs

[Martin Czech]

>From my head (may be wrong):

there's a standard circuit for triangle generation with just
one opamp, using both inputs. I've seen one app note.
Have to dig it out.

Problem could be voltage control.

m.c.

:::  oh, I also want it done with just 2 opamps (ie ONE TL072), I need this
:::thing to be compact if Ive got to build
:::8 voice cards. Trying to find an easy way to do 3 EGs under CV/DIGITAL