Nanjing wholesale price for LED backlights, who offers the lowest price, supplier [Nanjing Weishi Bo Electronics Co., Ltd.]: An inductor is an element that converts electrical energy into magnetic energy for storage. The structure of an inductor is similar to a transformer but has only one winding. It has a certain inductance, which only resists changes in current. If an inductor is without current passing through it, when the circuit is closed, it will try to resist the current flowing through it; if the inductor has current passing through it, when the circuit is opened, it will try to maintain the current unchanged. Inductors are also known as chokes, reactors, and dynamic reactors. Inductance is an attribute of a closed circuit, meaning when the current passing through a closed circuit changes, an electromotive force will appear to resist the change in current. This type of inductance is called self-inductance, which is an attribute of the closed circuit itself. If the current in a closed circuit changes, and due to the induced effect, an electromotive force is produced in another closed circuit, this type of inductance is called mutual inductance. Inductance is the alternating magnetic flux produced around the conductor when AC current passes through it, the ratio of the magnetic flux of the conductor to the current producing the flux. When DC current passes through an inductor, only a fixed magnetic field line appears around it, which does not change over time.