> Since this is a single supply with no reference common to anything else,
> put the current sense resistor in the ground lead.  No problem!

That just moves the problem of having a floating differential voltage for
voltage feedback instead of for current feedback.  I'd rather use a diff
amp to sense the current and keep all the grounds common.


*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics