Electric connectors for travelers heading for Brazil
So, you are traveling to Brazil right? Before you bring and plug your gadgets, of course you need to know what types of electrical connectors you will find in the country, as well as the voltage.
Voltage
There are two types of voltage used in the country: 127V and 220V. Of course, you can plug your 110V equipment in 127V outlets without trouble (actually 127V is just a convention, most of the time the tension varies between 110V and 130V. So, if your country adopts the 110V convention, it falls in the same category as 127V. The same happens to the higher 220V voltage. 240V/250V gadgets will work on them without hassle), but beware that in some states you will find 220V. Plugging your 110V gadget in a 220V will make it blow up. The 110V and 220V outlet options vary per state, but usually hotels will offer both, even when it’s hard to find the other kind of outlet elsewhere in the town. For instance, in the towns in the state of Santa Catarina, you’re likely to find mostly 220V outlets, while in the state of Parana, home of Iguazu Falls, you’re likely to find mostly 110V outlets.
Most top notch hotels will have identifiers of voltage in the outlets. If there isn’t an identifier, you’re strongly advised to ask hotel personel about it.
Plugs
Some hotels will offer the most common european, japanese and american outlets, or at least offer adaptors. In the other hotels, most plugs you’ll find in Brazil are the European Type C (2 pins) ungrounded. Take care not to confuse it with type with French type E, also common in Germany, which is larger. You’ll also find the grounded version, but to a minor extent.

Other types of plugs you’ll find are the American NEMA 5-15 grounded:

Other types of plugs are harder to be found.
Useful links