Almost all power-supplies made in the last 20 years are "switching" -- that is, they adapt to the voltage they are given.
For example, look at this one, which is for the Viking. See where it says
Input: 100-240AC? That means you are cool anywhere in the world.
You will need a Euro-plug adapter like this one to make it actually fit in the socket, about $2.50.
Ignore the commenters muttering about "bursting into flames" or "buying a new charger". I have traveled literally around the world with my tablet and a universal adapter, no voltage converter, and never had a glitch. Worst thing is, some countries, the spring mechanism isn't too reliable and the adapter sometimes falls out of the wall. Quel dommage!