There are three main types of voltage converter. Resistor-
network converters will usually be advertised as supporting
something like 50-1600 Watts. They are light-weight and support
high-wattage electrical appliances like hair dryers and irons.
However, they can only be used for short periods of time and are
not ideal for digital devices. Transformers will have a much
lower maximum Watt rating, usually 50 or 100. Transformers can
often be used continuously and provide better electricity for
low wattage appliances like battery chargers, radios, laptop
computers, cameras, mp3 players and camcorders. However, they
are heavy because they contain large iron rods and lots of
copper wire. Some companies sell combination converters that
include both a resistor network and a transformer in the same
package. This kind of converter will usually come with a switch
that switches between the two modes. If you absolutely need both
types of converter, then this is the type to buy. If your
appliances plug has a different shap