The attached picture is the insides of a 220V-110V voltage converter.
Looking at it, appears to be a toroidal transformer, but the question is whether there is a way to tell whether it is setup as an isolation transformer or an auto- transformer?
http://imgur.com/cpluBPh
Looking at it, appears to be a toroidal transformer, but the question is whether there is a way to tell whether it is setup as an isolation transformer or an auto- transformer?
http://imgur.com/cpluBPh