Paul:
The turntable motor works only on DC. If you try to power it with AC you may burn it out. I bought a inexpensive HO transformer at a swap meet and used it to power my table. I found out about 3-6 volts made for a good turntable speed. some have said 12 volts is ok also.
Joe
PS if you have only AC you need to do some things
1 . install a bridge rectifier to change the AC to DC
2. install a potentiometer or some other device to regulate the voltage.
Experts like Gunrunnerjohn can give you much better advice.
Joe