I'm working on a project that will be powered by a 9v wall wart. I bought a power jack to be used with my project (mouser pn# 806-KLDHCX-0202-AC), but no power is making it anywhere in my circuit. With a multimeter, I've determined that; the wall wart is indeed providing 9v. the tip and sleeve contacts of the jack are continuous with their respective contacts outside the jack. there is no voltage across the contacts when I plug the wall wart in.
So the only thing I can think of is that the wall wart plug is not making contact with the contacts inside the jack. This is strange, because I can feel the contacts connecting when I plug the plug into the jack, and the two parts make a solid connection. I've tried this jack with several different wall warts, all with the same result.
Does anyone have any idea how I can determine if it really is that the plug and jack don't match? I'm not convinced.