DC1390-473K

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Fixed inductors refer to devices that are made up of one or more windings wound around a form such as a core, toroid or other structure. The DC1390-473K inductor is a surface-mount component of the type typically used for impedance matching in an electronic design. It consists of three windings, two primary and one secondary, wound around a ferrite core. The purpose of this type of inductor is to match the impedance of the load with the source, in order to increase power transfer and reduce signal reflection.

Application Field

The DC1390-473K is a fixed inductor, suitable for use in RF and other applications. It can be used as a filter inductor for harmonics, wave-shaping, and signal isolation, as well as a reactive component for matching impedance. It is commonly employed in dB attenuator circuits for controlling frequency response in radio designs, and can be used in power supplies for limiting in-rush current.

Working Principle

The DC1390-473K inductor works by creating a magnetic field in response to an applied voltage. When the current passes through the windings, a magnetic field is established. This magnetic field will in turn generate a voltage in the opposite direction, thus creating a self-regulating electrical circuit. The voltage generated is proportional to the amount of current flowing, and will adjust to maintain the desired current. This self-regulating feature allows the inductor to remain in a stable, fixed impedance state over different operating frequencies.

Design Considerations

When designing with fixed inductors, it is important to ensure the component is properly sized for the application. Typically, inductors should be less than 5% of the total impedance of the circuit. It is also important to consider the Q (quality) factor of the inductor when selecting the component. This value is a measure of the inductor’s efficiency, and indicates how much of the energy that passes through it will be converted to heat. Higher quality inductors offer better performance and efficiency.

In addition to these considerations, the DC1390-473K inductor should be mounted in such a way that the core is not exposed to any external magnetic fields, as this can cause a change in the inductance of the component. It is also important to consider adequate spacing between the primary and secondary windings in order to minimize the amount of induced voltage.

Conclusion

The DC1390-473K inductor is a versatile, high performance fixed inductor that can be used in a range of RF and other applications. When properly designed and installed, the component can provide excellent performance, with efficient power transfer and minimal signal reflection. The inductor needs to be correctly selected and mounted in order to ensure optimum performance, while avoiding any external magnetic field interference.

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