Voltage Transformers enable the use of North American appliances that run on 110-120 Volts to be used in foreign countries with 220-260 Volts. This transformers can be used with appliances that have 85 watts or less.

Transformers are required (instead of converters) when continuous power is needed for electronic equipment or large appliances such as computers kitchen appliances medical equipment power tools stereo systems or any permanently installed electrical equipment.