I've got a Phillips Security camera that I got from the place a used to work that only has the camera part with it. Its not one of those cheap ones but its one of those good commercial quality ones. I've looked at some websites to try to find out the model number but I've yet to find it. My question is how do these cameras get power to them. I think I read where it comes through the coax broad/foil but not sure. Where could I get a power supply for it? Are the power supply's for these cameras universal or do I need to find out the model number to get the correct one? Thanks Guys