> @Dieter : I understand that there's no point in designing and
> manufacturing module that won't sell, even if it is easy to design.
> Would you mind help the few people like me who would like to have such
> a module DIY, like you did for the power amplifier (to use CV with
> lights or motors) That would be very kind of you.

This module is nothing but a combination of several "inverting amplifier"
circuits that is aleady available as schematics on the DIY page. But if you
need details I can make an overall schematic.

Best wishes
Dieter Doepfer