The first step I would need to do is check to see if the fan motor will work on a portable DC power source. I was a little bit saddened when I read the sticker on the power supply. It read output voltage 12vac. If it was a synchronous motor the whole project would be canned but it turns out that when I hooked up a 12vdc power source the fan turned on and worked as it normally would. So I am guessing that either the label was printed incorrectly or the LED’s inside some how were part of an H-bridge to convert AC to DC.