@ redleader and Dix:
Dix is right. AC and DC are easily converted. All brush motors are, by my (admittedly not universal) knowledge DC motors; AC is converted to DC to make them go, and direction of polarity dictates the direction in which they turn. Magnetic drives, I would imagine, are DC also and polarity dictates direction of magnetic field and therefore direction of spin also.
An electrician may come along and correct me on this in the next 5 minutes, of course... but that is how I understand it to work.
...and guys. Let's be cool with eachother, OK?
