You can pick up adaptors for whatever you need, inexpensively at any electrical store, they are everywhere, look for stores with "Lamparas" in the name. There are a whole bunch of them on Hortaleza just north of Grand Via (metro Grand Via, linea 1). Bring in an appliance to make sure you get the right thing. You can also get transformers for 220 to/from 110. They are quite heavy, but transformers always are (loths of wire wrapping a heavy iron core). You can also get plug converters for the large diameter plug prongs to smaller diameter prongs sometimes needed for Spanish plugs.
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