linear-to-expo conversion, and back?

[Josh Brandt]

Okay, I checked archives all over the place, and I couldn't find anything on
this... I'm more than happy to be corrected if I was just looking in the
wrong place, or if it's something simple I should know already... 8)

Is there, somewhere on the net, a schematic of an exponential CV to linear
CV convertor, and/or a schematic for a linear CV to exponential convertor? 

Thanks much,
Josh