I stopped by a Radio Shack on my way home from
playing golf err I mean on the way home from working today and picked up a Enercell AC adapter. The guy
threw in the "N" adapter free. but then he said something weird. He said to be careful of the positive and negative polarity when plugging the "N" adapter. I said, "Huh?????" and he asked me what I was going to use the adapter for and I told him my Personal Vaporizer and he said, "Huh????" and I said my e-cigarette and he said, "Huh?????"
At that point I knew it was a lost cause and the store got busy so I paid and left.
So can anybody shed some light on why I need to be careful with the + & - polarity when using the "N" adapter?