3090-821J

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Fixed Inductors

A fixed inductor, also known as a static inductor, is an electronic component used to store and induct energy in a static, non-varying form. Fixed inductors are widely used in many electronic circuits, especially in power applications, for a wide variety of tasks, from filtering to attenuating to matching frequency and phase. This article will discuss the characteristics and workings of the 3090-821J, a specific type of fixed inductor, along with how it might be used and the common applications of this component.

The most important characteristic of any fixed inductor is its inductance value, which is the amount of energy stored in it. The 3090-821J has an inductance of 8.21 mH, meaning that it can capture and store energy in the form of an electromagnetic field. This is achieved by using a conductive material, coil of wire, or in the case of the 3090-821J, a ferrite core with windings wrapped around it. This is the same way that a transformer works, but in this case, the inductance is fixed and does not vary. Additionally, the 3090-821J has a DC resistance of 0.46Ω, a low internal series resistance (ISR), and a high quality rating of 95%, making it a high-performance fixed inductor.

The 3090-821J has a wide range of applications, including power circuits and RF circuits, where it is often used as a RF choke in amplifier circuits. It can also be used as a part of a smooth-start electromagnetic system, such as in motor controllers, or as an inductor in a power supply. The high quality of the component makes it suitable for high frequency and high power applications, as well as protecting circuits from radio frequency interference.

In a practical application, the 3090-821J can be used to filter out high frequencies for a DC signal, as well as to match the right load for a device, such as an amplifier. The component can also be used in power supplies, where it prevents any sudden drops or spikes in the current, and also works to limit current. Lastly, the 3090-821J can be used in RF circuits, where it helps to reduce any disturbances from external sources. All of these applications help to make the 3090-821J a versatile and indispensable component in many electronic circuits.

The 3090-821J is a type of general-purpose fixed inductor, providing high performance and versatility in a wide variety of applications. Its 8.21 mH inductance allows it to capture and store energy in the form of an electromagnetic field, while its 0.46Ω DC resistance and low ISR result in a high quality rating of 95%. This makes it suitable for high frequency and high power applications, as well as protecting circuits from RF interference. Whether used as part of a power supply, a motor controller, or an amplifier circuit, the 3090-821J is a reliable and durable component.

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