Quote:
Originally Posted by sarah11918
The rule of thumb I've heard is if the cord contains a "brick", it contains its own transformer and all you need to do is make sure you have the proper adapter to fit into the local plug. The "brick" will do the rest. So for example, if you bring say a little coffee grinder to Paris and plug it in to just an adapter to grind coffee, you WILL see sparks.
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The size and shape of the "brick" has no relevance. You must look at the label on the transformer or brick . If it says 110 - 240 Volts AC (or something close to that), all you need is a plug adapter. If it says 110 Volts AC (U.S. Devices), you will need a transformer that's rated at or over the Wattage rating of the brick to reduce the 220 volts at the outlet to 110 volts. 220 volts hitting a 110 volt device can produce some interesting fireworks (but only for a second or so).