Fan Ac Or Dc

Some dc fans are available with an optional wall controller at an extra charge.

Fan ac or dc. As the alternating current passes through the motor of an ac fan it can induce a hum causing the noise but a dc fan does not have same wave form in the power and hence it cannot. The new technology in the motors means that dc fans are generally much quieter than ac motors. Smaller fans are often powered by shaded pole ac motors or brushed or brushless dc motors. They are powered by either alternating current ac or direct current dc which ultimately describes the electric motor that converts electrical power to rotational power.

Ac fans are still extremely energy. Dc fans use up to 70 less energy than an ac fan. Ac fans can be controlled from a wall control pull cord or remote while dc fans can generally only be controlled by remote very few exceptions see below. In contrast the alternating current fans or ac fans are powered with a changing voltage of positive and of equal negative value in general this changing voltage has sinusoidal shape.

The direct current fans or dc fans are powered with a potential of fixed value such as the voltage of a battery typical voltage values for dc fans are 5v 12v 24v and 48v. Dc fans are very quiet there is almost no motor hum this has to do with the dc part of the name dc stands for direct current as opposed to ac alternating current. A fan is simply an electric motor with vanes of varying kinds and arrangements attached to it to move air. Ac powered fans usually use mains voltage while dc powered fans use low voltage typically 24v 12v or 5 v.