There were power "bricks" with all of the DC voltages made at one time.
+ and -- 5 and 24v was a popular item at the swap meets.
I seem to rememebr that some 8" drives needed a -ve DC supply rail too.
The electronics needed -5V, but there was a 3-terminal regulator on the
PCB that could be connected or not by jumper options. SO the drive migth
want -5V, it might want a bit more (often specified as -12V). Worth
checking the links _bfore_ powering it up.
It does have an ac motor, and there were at one time parts to change to
50 hz. I don't recall if the voltage problem is strappable, or has to
be handled externally with a stepdown. Never worked with the floppies,
only with SMD drives at 50hz for export.
I thinmk there wwee 230BV motors made. Iv'e enver seen oen thart could
bn strapped for differnet voltages (well, OK, I've seen motors that could
be strapped for different voltages, but not in 8" floppy drives).
A lot of 8" drives over here (UK, which is 230V 50Hz mains) were 115V
ones, run of an autotransformer. Obviously they were 50Hz motors/pulley
sets.
-tony