Let's say that I have a source of DC signal that is referenced to a particular point (which is tied to an AC line 240 VAC floating potential).
I would like to get a DC signal that is the same as the original (I only need milliamps and it would be under 1 volt), but referenced to ANOTHER point (equipment ground, say).
So, in the AC world I could get by with using a little transformer. Is there a simple IC in the DC world that would do the same?
Perhaps an optocoupler with some extra functions to account for low current trafer ratio, would be helpful.
i