im plugging it directly into the AC outlet using a 9v dc power supply.... whatever im doing is definitly NOT right, when the power supply is cut the breadboards still has a + 9V charge for a a few min. Ive tried every combination of wiring this i can think of. The only way which seems to work is both outside terminals are connected to - 9v , the middle is +9v. I am not using a battery,,,,, and me thinks i should be using a two terminal DC power jack... not this 3 pin thing which from what everyone is sayin is intended for a battery as well???