77F390J

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Fixed inductors are components that are used in electronics and electrical engineering circuits, primarily to create inductance in a circuit. Inductors are formed by winding a wire around a ferrite or iron core, or using a copper or aluminum wire. They are used to store energy in a magnetic field and create a basic AC voltage across a coil. The 77F390J is a specific type of fixed inductor that has specific features and applications.

The 77F390J is a fixed inductor that offers inductance values from 11.2uH to 470uH in a compact, low profile size, allowing it to be used in many small applications. It also offers high dc saturation current of 2.2A and high self-resonance frequency. The slim, low profile construction, combined with its high inductance makes 77F390J the perfect choice for applications in power electronic and LED lighting systems.

The working principle of a fixed inductor like the 77F390J is based on Faraday’s Law of Induction. According to this law, when an electric current is passed through a wire, it generates a magnetic field. This magnetic field then induces an EMF, or voltage, in the wire, creating an inductor. When current passes through an inductor, it creates a magnetic field. This magnetic field stores energy, which is then released when the current is interrupted. The size of the inductor, along with the strength of the current, determine the amount of energy stored in the magnetic field.

The 77F390J, being a relatively small inductor, has limited storage capacity, but its low profile size and high dc saturation current make it well suited for a variety of applications. It is primarily used to filter noise and ripple currents in power supply modules, LED lighting modules, and other small and medium-density power converter applications. The high self-resonance frequency of the 77F390J also makes it well suited for high frequency applications such as resonant converters, wireless power transfer, and OLED lighting. The 77F390J is made with copper wire cladding and is RoHS compliant.

The 77F390J is just one example of a fixed inductor. There are many other types of inductors that are used in different applications, such as air core inductors, variable inductors, and toroidal inductors. All of these have their own unique features and applications, depending on the needs of the circuit.

In summary, the 77F390J is a type of fixed inductor that offers a high saturation current and self-resonance frequency, along with a small, low profile size. It is primarily used to filter noise and ripple currents in power supply modules, LED lighting modules, and other small to medium density power converters. It is made with copper wire cladding and is RoHS compliant. While the 77F390J is a specific type of fixed inductor, there are many other types of inductors, each with its own unique features and applications.

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