It is to note that an adapter is only a small device which helps is making two different plugs compatible; however it doesn’t bring any change to the voltage. Thus an adapter only changes the shape of the plug. For changing the voltage, a transformer or converter is to be used. It is extremely important that the user before using an appliance checks about the voltage of the current coming in the power outlet.
Also, some of the countries have 220V in their power outlet, while others have 110V. There have been many cases in the past, wherein people have used appliances and power outlets with different voltages, considering that an electrical adapter will do the needful. Plugging an electrical appliance meant for 110 V into a power plug of 220 V might lead to unpleasant consequences and even total failure of the device. Thus, special care should be taken while using an imported electrical appliance. However, it is to note that electrical adapters have nothing to do with the voltage differences and can be used in both 110 and 220 V power outlets.
There are at least 13 different plug configurations around the world. Thus, a frequent traveler will find it difficult to remember the plug configurations of each and every country. For this reason, electrical adapter kits which feature all the main plug configurations are available in the market today. The kits make using of imported appliances extremely easy, especially for frequent travelers. Most of these kits also contain a transformer or converter which helps in using appliances meant for a voltage different from that coming in the power outlet. In order to use a converter, the appliance is first plugged to the converter which is then attached to the adapter. The adapter is then plugged into the power outlet. It is to note that many countries have problems related to current fluctuations and most of the transformers are not able to withstand this, providing a considerable threat to the appliance. For this reason, many people also use a surge protector, especially while using delicate electrical appliances. A surge protector protects the appliances from sudden electrical surges and fluctuations.