28472C

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Fixed Inductors

A fixed inductor, also known as a “choke” or “air-core inductor”, is a coil of electrical wire used to control the flow of current. Fixed inductors are often used in circuits to filter various frequencies of electrical signals, reduce electrical noise, or provide energy storage. The 28472C from Coilcraft is a toroidal core fixed inductor made from highly conductive copper and magnetically shielded with an insulating sleeve.

28472C Application Field

The 28472C fixed inductor is designed for applications in the radio frequency (RF) spectrum, specifically in the 100 kHz-30 MHz frequency range. Its low profile and small size make it ideal for applications where space is limited. In addition, its shielding helps to reduce the effects of external electrical noise, making it useful for applications in noise-sensitive systems. The 28472C is also used in circuits for voltage regulation, filtering, and energy storage.

28472C Working Principle

The 28472C fixed inductor works by creating an electromagnetic field when an electric charge passes through the coil encircling the inductor. This field lets the inductor store energy in the form of electric and magnetic fields. The fixed inductor works well in circuits where its magnetic field can interact with and influence an alternating current, such as AC power lines.

Conclusion

The 28472C fixed inductor from Coilcraft is a small, low-profile inductor made of highly conductive copper and magnetically shielded for use in the 100 kHz-30 MHz frequency range. It is used in applications for noise reduction, voltage regulation, filtering, and energy storage and has advantages over other inductor types due to its smaller size, higher efficiency, and lower heat dissipation.

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