# Coupled Inductors

The concept of coupled inductors, or transformer coils, is fundamental in the field of electrical engineering. Coupled inductors are used to transfer energy from a primary circuit to a secondary circuit, allowing for efficient and reliable power transmutation while providing some unique advantages not seen with other power conversion methods.

## What is a Coupled Inductor & How Does It Work?

Coupled inductors are imperative in the electrical engineering field. They function in DC-DC convertors by transferring energy from one winding to another. It uses a gapped magnetic core, which converts the voltage between primary and secondary coils. This process allows the inductors to deliver power in controlled intervals, which is unique and not seen in other methods.

Understanding how coupled inductors work is necessary to know how they can be applied to various applications. Fortunately, we have an in-depth understanding of the technology and the different industries so that we can provide the best possible solution for your project requirements.

### Coefficient of Coupling

The coefficient of the coupling is defined as the fraction of magnetic flux from the current in one coil that links with the current of another coil. It’s represented by the (k) symbol and expresses the amount of coupling between two inductively coupled coils.

The coupled inductor equations formula is K = M/√L1+L2. L1 refers to the first coil’s self-inductance, L2 refers to the second coil’s self-inductance, and M represents the mutual inductance between the two coils.

### Benefits of Utilizing a Coupled Inductor

The ability of coupled inductors to deliver power in a controlled interval is the physical space that it can save since it uses a single core while having the power of two. Due to this design, many industries are enticed by it.

Another advantage is that it has a more significant efficiency gain in performance due to the lower winding losses. Even though this efficiency isn’t as notable, it’s still a benefit.

Finally, a coupled inductor’s ripple is divided between two inductors, allowing the inductance also to be halved. The design naturally has a small input capacitor with a more straightforward EMI filtering.

## Common Applications of Coupled Inductors

A coupled inductor is designed to increase or decrease the voltage and current of numerous electrical applications. They’re used in myriad industries for various applications, from automotive and aerospace to medical, industrial, and consumer appliances.

Frequently, coupled inductors are seen in power supplies where noise reduction is necessary or interference between two circuits is required. Additionally, they’re also used as filters in RF design.

Other typical applications of coupled inductors are as follows:

• Power distribution across large distances
• Transformers
• Flyback converter
• Metal detector
• Oscillators
• FM transmitter

With the numerous applications coupled inductors have, it’s crucial to have reliable and safe products from a trusted manufacturer, such as MPS Industries, to guarantee your project’s success.

## Why Choose MPS Industries for Your Inductor Needs?

Our Coupled Inductors are specially designed to save on space and cost, while meeting your requirements for electrical performance and reliability.

We have extensive experience designing and manufacturing custom and standard inductors at MPS Industries, so we can quickly achieve customer satisfaction and success. If you have any concerns or questions about what is coupled inductor and our products, don’t hesitate to contact us today.

You may also request a quote, and our staff will get in touch with you shortly to help with your project’s needs.