Sometimes the names for converters and adapters can get mixed up… The employee that I talked to told me that I would only need certain pieces for my computer and digital camera needs. Make sure that you talk to someone who knows which piece you should get. Voltage Converter Company is a leader among voltage converter manufacturer. Our main focus is creating the highest quality products. Voltage Converter Company is an United States voltage converter maker located in Los Angeles. Our company concentrates on voltage converter design and voltage converter manufacture. The main products are 110v to 220v voltage converter, 220v to 110v voltage converter, step up voltage converter, step down voltage converter and so on. It all depends on the wattage of unit- it is always best to try to use a converter that is rated 3 times more wattage that the 220 unit. For example: if units wattage is 500 get a 1500 or 2000 watt converter and so forth. That's not always possible. But I would at least try to get double. I use converters all the time for gas coffee roasters that have wattage up to 1000 or more. I use a 3000 watt converter for those. There comes a point where the converter costs more than a dedicated 220v outlet. At that point the outlet could make more sense. Travel voltage converters are not designed for continuous use as oppose to the larger transformer which can be used continuously. Travel voltage converters also have very small capacity and usually range from 30W to 200W max. The 1600W or 1875W travel voltage converter is not an actual voltage transformer, it is designed specifically for heat producing (purely resistive) items only such a hair dryer, irons, heating pads, etc.. Do NOT use 1600W or 1875W setting of a travel voltage converter with electronic items or any items with electronic circuitry or chipset. A voltage converter is an electric power conversion device which is used to change the electrical output of a power source. The most common use for these converters is to change the voltage from 220 volts down to 110 volts, or from 110 volts up to 220 volts. When an electronic device, appliance or power tool was built for a specific voltage which is not available, the only way the device can be used is by converting the power up or down to the correct level. The need for a voltage converter often arises for people who travel abroad or take overseas vacations and bring electronics along with them. Our step up voltage converters and voltage transformers are designed for using equipment from the UK or Ireland in the USA. They have a 2 or 3 pin US power plug and a 3 pin UK socket or a three pin universal socket. To make it easier to find the right one, ask for a "European" adapter. It's 2 round prongs. If your gadget doesn't support the 2 voltages, you'll have to get an adapter that changes the 220 coming from the wall to 110 for the appliance. These can be expensive. If we're talking about a hairdryer, you're probably better off getting a new hairdryer overseas.