The working principle of the electric blanket is mainly to generate heat by passing an electric current through a resistance wire. ‌ The electric blanket contains special flexible cable heating elements which are woven or sewn into the blanket to form a snake-like structure. When the current passes through these resistance wires, according to Joule's law, the heat is equal to the current times the resistance times the time, the resistance wire heats up and transfers the heat, thereby increasing the temperature of the bed to achieve the effect of heating. ‌

When using electric blankets, you need to pay attention to some safety matters. For example, do not fold the use, so as not to cause electric leakage caused by twisting and winding of the electric heating wire; Avoid using power for a long time, generally should be heated before going to bed, and turn off the power when falling asleep; Use a sheet or a thin mattress to prevent burns. In addition, when selecting the electric blanket, we should check whether there is an inspection certificate and certification mark, and the power parameters should also be selected according to the needs of the appropriate range.