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Where to buy a transformer: https://mercadolivre.com/sec/2BPDRit We will show you this portable 100VA 127 to 220V voltage transformer. Super easy to use and transport! The auto transformer is a device that transforms the electrical current, it serves to meet the needs of an equipment or electrical network. With an auto transformer, you can connect the 220V device to the 110V socket or connect the 110V device to the 220V socket. In other words, it makes it possible for you to use an electronic device if you do not have an outlet in your home with the same voltage as the device. And the biggest advantage of having an auto transformer is that they work with only one socket, that is, they do not require installation and can be changed depending on your need. The auto transformer will always need to have a power (VA) greater than the needs of your device (W), because when transforming “VA” into “WATTS” there is a small loss, the value in Watts will always be around 20 to 30% lower than the value in VA. For example, a 100VA transformer supports up to around 70W, therefore it is recommended for products with less than 70W of power (W).