Depending on how much current the drive needs
@ 5, & 12 volts, you MAY be able to use two
A.C., to D.C. adaptors, or use a 5 volt regulator
driven by one 12 volt A.C., to D.C. adaptor. Like
the one shown below. Sky.

http://cva.stanford.edu/cs99s/datasheets/LM340.pdf