Electrical fan

Electrical fan is defined as a device which is used to produce current of air by movement of a surface or surfaces. It uses electric current as input and produces current of air as output. It runs with the help of electric motor. Fan is used for two purposes first is to move gas from one location to another or to move air for creature comfort.

Electrical fans consists of a set of rotating blades placed in the protective housing which permits air to flow through it. 3-phase asynchronous motors are commonly used as electric motors for big industrial fans. Shaded pole AC motors or DC motors are used in smaller fans. DC motor may be brushless or brushed.

AC powered motors uses mains voltage and DC powered motors use low voltage, typically 5V, 12V, 24V. Cooling fans for computer equipment entirely use brushless DC motors because they produce much less Electro Magnetic Interference as compared to brushed DC motors. Examples of electrical fans are table fans, ceiling fans, exhaust fans etc.