A three-hole plug in China needs a converter to get to the United States. The three plugs in the United States are round on the top and flat on the bottom. Voltage converters can be bought in general supermarkets.
American civil AC voltage is 1 10V, 60hz；; In China, it is 220V and 50Hz, and the general conversion sockets are not equipped with transformers. Some electrical appliances with variable voltage function, such as mobile phones, SLR, notebooks, can be used directly, but charging will be slower. However, high-power appliances such as hair dryers and electric irons must be equipped with transformers, otherwise they cannot be used.
Extended data:
The voltage in most countries is 220 volts. In fact, generally speaking, there are two voltage systems around 1 10 V and 220 V in the world. Usually, the voltage on the ship is about 1 10 volts, and others are like 220 volts in China and 230 volts in Britain.
If electrical appliances with the same voltage system, such as those from China, are brought to the UK for use, voltage is usually not a problem, because the voltage fluctuation range of most electrical appliances is 20%. Chargers, laptops, razors and other electrical appliances all have suitable voltages, and the applicable voltage range is 1 10 volts to 240 volts.
In China, flat or splayed plugs of 220 V and 50 Hz are usually used.
Japan usually adopts two-pin flat or two-pin flat+round grounding pin plug,100V 50hz; Hz；
South Korea uses a two-pin round plug, 220v 50Hz；;
China, Hongkong and China Macau use triangular flat plugs, 220 V, 50hz；;
Australia uses a eight-character plug, 240v 50Hz；;
New Zealand uses a eight-character plug, 220v 50Hz；;
Vietnam uses a two-pin round flat plug,120/220 V 50 Hz;
Thailand adopts two-pin flat or two-pin flat+round grounding pin plug, 220v 50Hz；;
Malaysia uses a three-pin flat plug, 230v 50Hz；;
Three-pin flat plug for Singapore, 220v 50Hz；;
The Philippines uses two-legged flat or two-legged flat+round grounding feet, 220v 50Hz；;
Indonesia uses a two-pin round plug, 220v 50Hz；;
Three-pin flat or three-pin round plug for India, 230v 50Hz；;
The United States, Canada, and Mexico use two-pin flat or two-pin flat+circular grounding pin plugs, with rated voltage and frequency of 120v 60Hz,10v 60hz,127v60hz; They are.
Italy adopts Italian standard three-pin round plug or European standard two-pin round plug, 220-230v 50Hz； Hz; Hz；
Austria, Czech Republic, Poland, Greece, Belgium and the Netherlands use European standard round plugs with two feet, 220 V and 50hz；;
British standard three-pin flat plug, 220-240v 50Hz； Hz; Hz；
France uses the European standard two-pin round plug, 220v 50Hz.
For those who plan to travel abroad, please refer to the socket specifications of various countries and prepare the adapter in time to facilitate travel.
References:
People's Network-Small Popular Science on Electricity Consumption in Various Countries