Voltage converters are more complex than you thin and most of us do not realize it unless we move out of the comfort of our homes and explore different countries. In fact even within my country, I have witnessed different standards and faced unlimited headache.
Anyways, finally someone has bothered to put everything together, so as to make it easy for everyone. 110220volts deals in such tricky electrical needs that are so vital yet so hard to find and they have also come up with an interesting infographic that will help everyone in choosing the right converters for their respective needs.
So visit this Voltage Converter Transformer Buying Guide and you will never be confused again, no matter where you travel to.