Inductors in Circuits and Preventing KickbackД«ecause inductors do not sustain a continual level of voltage between terminals, it is not possible to suddenly stop the current. Applications for this type of core include high-frequency transformers, high-current filters, and current injection. Made from soft magnetic materials such as highly-permeable iron, nickel-iron, or silicon-iron, tape wound cores are produced in thin strips and have a thickness of 0.0005-0.004 inches and a weight range from. Powdered ferrite cores are available, which are denser and offer greater linearity than solid ferrite cores. Ferrite cores will use a different ferrite material based on the application, such as manganese zinc for certain kinds of antenna rods, with various materials offering a different set of advantages. However, when dealing with high inductance they are not always reliable and tend to reach their magnetic saturation level relatively quickly. When it comes to offering the highest resistance, solid ferrite coresВ are at the top of the list. The denser the steel core, the less of a problem the core will encounter with magnetic saturation. Steel Core InductorДЇor low resistance, high inductance applications, steel coresВ are a step above air cores. The lack of a metal core results in very little distortion, but by the same token, the coil must be very long to carry high amounts of inductance, resulting in a large inductor. In this configuration, there simply is no core. Coils wound around iron-based cores yield greater inductance than those wound around non-iron-based cores. Because the core is the material the coil winds around, it directly affects inductance. Types of CoresДЄside from ceramic core inductors, other core materials can be used to achieve certain results. Often used in circuit boards, they can assume either a cylindrical or bar formation, with windings featuring terminations at each end. These inductors are molded using plastic or ceramic insulation. Ceramic Core InductorsДЄlthough there are numerous kinds of cores, a ceramic core inductor is unique in having a dielectric ceramic core, meaning it cannot store a lot of energy but has very low distortion and hysteresis.

As a result of the multiple layers and the insulation between them, multi-layer inductors have a high inductance level. This particular type of inductor consists of a layered coil, wound multiple times around the core. A transformer is a kind of coupled inductor. When mutual inductance is needed, coupled inductors are often used. The video below provides a quick look at these inductor types:Д¬oupled inductors exhibit magnetic flux that is dependent on other conductors to which they are linked. Coupled, multilayer, molded inductors, and ceramic core inductors are all common types found in commercial and industrial applications. Image credit: Shutterstock/Jurgis MankauskasДЄs with many electrical devices, different models exist for specific applications. Types of Inductors A type of ferrite inductor To find Suppliers of Inductors, click here.

You can read more about the function of inductors on HyperPhysics.

InductorsВ are commonly used in radio frequency applications to transmit a current and minimize feedback and interference, and can also be used in circuits to moderate electrical flow. Eventually, the coil builds a field, and current is transmitted through the coil until the magnetic field collapses and the process must begin again. As the current is applied, an inductor coil stores the current to establish a magnetic field. Inductors, devices that transmit and measure current in relation to the amount of voltage applied, are essentially electromagnets that store and release an electrical current.

Symbol for ferrite core inductor