This is probably stupid, but I have become very confused and would like someone's help.
I have brought some equipment from the usa, and these run on 110v. Where I live, I only have 220v. I brought an ac adapter, but became confused with something.
The adapter says "input 110v 50 Hz, output 220v 50w". My question is, is this a step up transformer or a step down transformer? Which is the input and which is the output on the adapter? Since my equipment runs on 110v, will plugging this adapter into a 220v outlet work, or is it the other way around?