I heard talk about "channel of data + power line" in the same cable. I am curious to know its operation. Someone would have information (circuits, projects) on the subject?
I found this:http://computer.howstuffworks.com/bpl.htm
check this link pleasehttp://www.echelon.com/products/development/
its for Echelon company the #1 company on data communication over power lines using a protocol of theirs named LONTalk protocol
the previous link is for their software and hardware tools used to develop application