Variable Transformer

I posted this question in the Gecko group as well.

I was wondering if a variable transformer would work in building a
power supply for the Gecko drives.

The one I would like to use is 110 VAC input 0-115 VAC output and 10
Amps. I know the Gecko is rated at 80 VDC so you would not want to set
the AC output above say 53 Volts. I can set a lock pin on the dial to
stop it from an accidental position change.

Would this work?

-D