I relocated to Japan (where electricity is served at 100V) recently and I am looking to buy a step up voltage transformer to be able to use my TV which accepts 220-240V.
While I managed to find some options, it seems that majority of the transformers out there are designed for US-Europe conversion, ie accepting input of 110V and not 100V.
Could I use such a transformer instead, assuming it can generate output of 240V? (I'm assuming transformers work in multipliers, so a "max transformation ratio" would be 240/110, and 100*(240/110) would get me very close to 220V). Are there any other considerations why I should not try this besides voltage calculations?