Live Chat

en English
Home / News / FAQ—What Devices Use Inductors?

FAQ—What Devices Use Inductors?

Q1: How are inductors used?

To begin with, before understanding what devices use inductors, we first understand how inductors are used. Inductors are used in many circuits, they are used to filter signals and store energy. Inductors can also be used in radio frequency circuits, such as antennas.

Inductors are often combined with capacitors in filters. The frequency response of a filter is determined by the values of its magnetic flux inductor and capacitor components. Like iron core inductors block DC signals while allowing AC signals to pass.

Inductors are also used in radio receivers to tune in different stations by tuning out interfering signals and amplifying desired ones.

Q2: Why are inductors useful?

Secondly, understanding why inductors are useful is also the focus of our learning of what devices use inductors. Inductors are useful in a range of applications, and they’re especially important in the world of electronics. Here are the main reasons why:

Inductors help to filter out high-frequency noise from circuits. This is because the amount of current that can flow through an inductor decreases as its frequency increases. Inductors prevent high-frequency noise from entering a circuit by filtering out this kind of signal.

Inductors are also used to store energy in circuits. When you have a device that uses electricity, such as an electric motor or light bulb, it will need to draw power from somewhere else at some point. If you want to store this energy until it’s needed, then an inductor can be used for this purpose.

Q3: Which devices use inductors?

After a simple understanding of inductors, we now focus on what devices use inductors. Inductors are widely used in electronics and electrical engineering. They are used in all types of circuits, from power supplies to audio amplifiers, from radio receivers to computers, and from control systems to electric motors.

Applications of inductors are used in almost all electronic devices that involve the flow of electricity. For example:

Power supplies

From batteries to transformers, inductors are found in almost all power supplies. Inductors protect the circuit from voltage spikes generated by sudden changes in load current or when electrical switching on or off a device.

Circuit breakers

Inductors protect sensitive electronic components against surges in current and voltage caused by lightning strikes or when switching devices on or off quickly.

Audio amplifiers

Audio amplifiers use inductors to filter out unwanted frequencies from the audio signal being amplified. The frequency response of an inductor is related to its size and shape (the number of turns). By using different-sized inductors with different numbers of turns, you can adjust the frequency response of your audio amplifier circuit so it only amplifies certain frequencies while rejecting others.


In transformers, inductors are energy storage devices while current flows through them; they release the stored energy when the current stops flowing through them. Transformers are used in many different types of applications, including inductive proximity sensors, radio frequency interference suppression, and high-voltage direct current transmission (HVDC). In In the power transmission systems, there are two conductors carrying direct current (DC) charges at different voltages separated by an insulator called a core—a stack of tightly packed coils wrapped around each other like springs.

Q4: How do inductors work?

After understanding what devices use inductors, how do inductors work? Inductors are one of the most complex components in electronics. They’re made from coils of wire and produce a magnetic field, which can then be used to store energy.

The amount of energy that can be stored depends on how much electric current flows through the wire. When you connect an inductor to other components, such as capacitors and resistors, it will alter the way they work.

In an inductor, a coil of wire is placed inside an iron core. When current flows through the wire wrapped, the interface in which the cable creates a magnetic field by the current causes the core to become magnetized.

The more current that flows through the coil, the stronger this field becomes. This causes a magnetic force to push back against any additional current flow — hence, resistance to change in current flow. That’s why an inductor resists changes in voltage and current flow (hence its name). The stronger the magnetic field in an inductor, the greater its resistance.

Q5: What’s the difference between chokes and inductors?

A choke is a type of coil that is designed to limit the flow of current through it. It’s also known as an inductor.

Common Mode Chokes are frequently used in power supplies and are designed to help filter out noise on a circuit board.

An inductor like an air core inductor is a coil of insulated wire that stores energy when current passes through it. A fixed inductor has a property called self-induction, which means that when current passes through the coil, it creates its own magnetic field — this repels the first magnet and pulls the second magnet towards it.

The effect is similar to a ferrite bead, but a ferrite bead requires an external output voltage power source (such as a battery or AC power outlet) to work; whereas an inductor doesn’t need any external power source to work.

Q6: Does my iPhone have an inductor?

The answer is yes, your iPhone’s battery has an inductor, but it’s not the type that can be damaged by a power surge.

The inductors in your iPhone are found in the charger, which converts AC power from a wall outlet to a DC current for charging your phone. The charger also includes a transformer to step up voltage for faster charging times.

The inductors in your iPhone are used as part of a filter circuit, which helps regulate the amount of current going into your phone’s battery. If you want to learn more about how this works, check out this link:


An inductor is an electrical component used to support generating magnetic fields. It is most commonly used in electric transformers, motor coils, and some circuits like the 555 timers. Inductors are very much crucial parts of all electronic devices that use electric motors or transformers because they help create the magnetic fields required for it. Inductors are used in many different applications including power supplies and electronics, they are everywhere.

    Get A Quote