What Type Of Inductor Do You Need?


When you wish to install circuits into your systems, you want to compromise with nothing. You want the best quality circuits installed that provide high performance and reliability, so that you rest assured that there will be no faults, issues, or obstacles while your application is running. Different industries have different types of electric circuits being used, both in terms of design as well as operation. However, there are certain components that remain common in each, an inductor being one of them. Inductors are passive components that provide energy storage, and are identified by their inductance value and current rating. Although inductors are a part of every electric circuit, yet each type of inductor is different from the other, being distinguished based on the size and ratings.

The working principle of an inductor

Conducting materials may either be ferromagnetic or paramagnetic, while non-conducting materials are diamagnetic in nature. Because of these properties, whenever there is a change in the direction of current, or when reverse flow of current is observed, most conductors show inductance, which is the opposition shown by a conducting material in response to the electric current flowing through it. Inductors hold such a shaped conductor in them, which increases the inductance of the device by boosting the magnetic flux; and any change in such a magnetic flux may induce an electromagnetic flux or voltage in the circuit.

Types of inductors

Toroidal inductors – These inductors have doughnut shaped magnetic cores that possess a specific current carrying capacity and inductance. They are used in power circuits, where they support low frequencies without affecting large inductance values. They have higher inductance per turn than other inductor types, and are capable of carrying large currents. These inductor types are thus used in equipment like EMI circuits, amplifiers, switch mode power supplies, electronic brakes and clutches, air conditioners, and medical devices.

Ferrite inductors – These transformers use ferrite cores, a mixture of iron oxide and magnesium/zinc oxide at very temperatures. They possess high electrical resistivity, low eddy current losses, and excellent permeability, making them suitable for applications like switching circuits, noise filtration equipment, switching regulators, and industrial converters.

Surface mount power inductors – These inductors are used in power circuits that are miniaturized, such as in electronic applications that use AC-to-DC converters and DC-to-DC converters, graphic cards, desktops, notebooks, battery powered devices, and server applications.

Air core inductors – These inductors have a non-magnetic core, with coils wound on plastic, or the coils being made self-supporting. These types of inductors thus possess no core losses, making them saturation-free. Moreover, they are assured to offer reliable performance at high frequencies, making them apt for use in applications with radio and microwave frequencies, such as signal transmission systems, air navigation systems, land mobile radio systems, marine communication equipment, and radar equipment.

Where to get your inductors?

The type of inductor you choose will depend on your specific application and requirements. No matter what your choice may be, you can always rely upon Miracle Electronics, the leading inductor coil manufacturer in India, for the best performing inductors. Whether it is UU, EE, EI, toroid, ferrite, or pot core inductors you wish to have, all the inductors offered here are RoHS, HIGH, and REACH compliant; thus ensuring quality. You may have your inductor perfectly manufactured and customized to suit your requirements, and also include many other related products in your package.

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