We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.
Electronics

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

What Is Inductor Impedance?

By Jean Marie Asta
Updated: May 16, 2024
Views: 9,633
References
Share

Inductor impedance, also known as inductive reactance, is a generalized concept of direct current (DC) and alternate current (AC) resistance to an inductor. A passive component, an inductor is designed to resist current changes. The materials and construction of an inductor determine the inductor impedance. A mathematical formula can be used to calculate the impedance value of a particular inductor.

The ability to resist current change, combined with the ability to store energy in a magnetic field are some of an inductor's most useful properties. When a current flows through a particular inductor, it will produce a changing magnetic field which can induce voltage that opposes the current produced. Induced voltage is then proportional to the current change rate and an inductance value.

An inductor can be made in many ways and with several different materials. Design and materials can both affect the inductor impedance. Inductors and their materials have specific electrical specifications that include properties such as DC resistance, inductance, permeability, distributed capacitance, and impedance. Each inductor has an AC component and a DC component, both of which have their own impedance values. A DC component’s impedance is known as the winding DC resistance, while the AC component’s impedance is called the inductor reactance.

Impedance can differ and be manipulated by the materials that make up an inductor. For example, an inductor may have two circuits that are coupled and adjusted so that one circuit’s output impedance is equivalent to the opposite circuit’s input impedance. This is called matched impedance and is beneficial because minimal power loss occurs as a result of this kind of inductor circuit setup.

Inductor impedance can be solved with a mathematical equation using angular frequency and inductance. Impedance is dependent on the frequency of a wavelength; the higher the wavelength’s frequency, the higher the impedance. In addition, the higher the inductance value, the higher the inductor impedance. The basic equation for impedance is calculated by multiplying the values “2”, “π”, “hertz” and “henries” of a wavelength. The values obtained in this equation, however, depend on other values including the ohm measurements of resistance, capacitive reactance, and inductive reactance.

Obtaining the inductor impedance requires additional calculations. Both capacitive reactance and inductive reactance are 90 degrees out-phased by resistance, which means the maximum values of both happen at different moments in time. Vector addition is used to solve this problem and calculate impedance. Capacitive reactance may be calculated by adding the squares of inductive reactance and resistance. The square root of the added values is then taken and used as the value of the capacitive reactance.

Share
EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Link to Sources
Discussion Comments
Share
https://www.easytechjunkie.com/what-is-inductor-impedance.htm
Copy this link
EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.

EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.