Air Core Inductor and Its Key Advantages

Air core Inductor is a kind of inductor that does not depend upon a ferromagnetic material to achieve its specified inductance. The inductor has only air inside when it comes to windings upon a different insulator such as bakelite, glass or PTFE etc.

What is an inductor?

 It is a kind of a passive two-terminal electrical component which stores electric energy in the form of magnetic energy. The inductor uses a conductor which is attached to the coil and generates a magnetic field when electricity is flown into the coil from the left to right.

Inductors are mainly used to block AC and allow DC to pass. Which is why they are also called chokes. They can also be used in some electric filters to separate signals of different frequencies, and in combination with capacitors to make tuned circuits, used to tune radio and TV receivers. Inductor blocks only AC because it only resists the change in current.

There are different types of inductors. The ones whose core is filled with air are called air core inductors. These types of inductors widely used in a wide range of electric applications such as motor.

Unlike normal inductors which are made by wrapping a conducting wire into a coil around a central core, air core inductors contain only air in its center.  An Air core inductor uses either non-magnetic coils or no coil at all instead of a ferromagnetic coil.

Advantages of air core inductor

There are many benefits of air core inductors. But we will look at only key advantages. The inductor has following crucial advantages.

·   Its inductance is not affected by the current it carries. This is quite opposite to the situation with coils that use ferromagnetic cores with inductance that tends to reach a peak at moderate field strengths before dropping towards zero as saturation approaches. Sometimes non-linearity in the magnetization curve can be tolerated in switching converters. It is also needed for circuits such as audio cross over networks in hi-fi speaker systems where it is important to avoid distortion. Air core coil is crucial element for most radio transmitters, which is used to prevent the production of harmonics.

·     Also, the inductors are free of the 'iron losses' which affect ferromagnetic cores in the wire wrap inductors.  Because of this, you get better Q-factor, greater efficiency, greater power handling, and less distortion.

·     Air coils can be designed in a way that it can perform at frequencies as high as 1 Ghz. Most ferromagnetic cores are more likely to be rather lossy above 100 MHz. But this does not happen with air core inductors.

There are many places in the USA where you can air core inductors. If you are looking for the best air core inductors at most competitive price, buy online at www.teee-inductors.com, a one of the top suppliers of air core inductors in the USA.