A wall charger is a charger that is connected to a wall outlet and charges the phone. The voltage, frequency, and type of power outlet vary from country to country. For example, U.S.A’s voltage, frequency, and electrical adapters differ from UK voltage, frequency and electrical adapters.
US – 110 volts, 60 Hz.
United Kingdom – 230 volts, 50 Hz.
But most wall chargers are designed to operate between 100 volts and 240 volts at 50/60 Hz, so they can be used in different countries at different voltages and frequencies. The only difference is the shape of the live and neutral leads in the plug. This shape is different in different countries.
Here comes the travel adapter. Travel adapter – to literally understand it is to convert some kind of plug into another kind of plug (such as telephone power plug, USB charging plug, computer power plug). Generally speaking, it means that the power plugs of different countries can be converted into the power plugs of other countries, and the power plugs of many countries can be plugged into the sockets of another country. Plugs from different countries can communicate with each other in different countries around the world, enabling appliances from different countries around the world to be used in other countries.
As we all know, with the development of science and technology, people who go out for travel or on business trips will bring all kinds of electronic products, including DV, DC, mobile phones, and GPS. With electronic products, it is bound to bring corresponding chargers. However, for those who go abroad for business trips or travel, they must pay attention to the fact that due to the different shapes and voltage conditions of the power sockets in each country, it is necessary to carry a voltage converter suitable for the country of destination.
To sum up, the travel adapter is used merely to change the shape of the live and neutral leads such that it matches to that of your wall charger. The travel adapter merely does shape conversion of the live and neutral leads of the plug between input and output. So the travel adapter just does shape conversion. And the wall charger supplies power to charge your mobile phone.