How can we define a power or ground plane whether it is positive or negative? I normally define power or ground planes as -ve. But i saw in some reference boards, which were defined as +ve. What is the main difference between these two +ve and -ve planes? Which one is best to define?
Any reply will be appreciated.
As I understood, -ve plane is transparent, it needs les memory space, so while opening a file it takes only less time to load the file, compared to +ve planes.
I prefer -ve plane because of this.
But, I too have seen boards with +ve planes, (I was so uncomfortable working with that) designed by experts (I think). I did n't understand the reason; may be some fabrication people prefers +ve planes.
expecting for further discussions ....let us share our knowledge.
thanks & regards