EXC-28CE900U Filters

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Common Mode Chokes, such as EXC-28CE900U, are electrical components used to capture undesired or unwanted electromagnetic noise within a system. The choke uses a wound inductor which redirects the current and blocks the external electromagnetic noise. They allow direct current to pass through to the associated loads while blocking alternating current and thereby prevent ground loops.

The EXC-28CE900U common mode choke is a chip-type component typically used in DC-DC converter applications that require high-power density and suppression of common-mode noise generated from the power converter. This common mode filter choke has an inductance of 28µH with a maximum DC current of 32 A. It also has a maximum AC current of 20 A and is widely used for power supply, EMC control in household appliances, industrial equipment, lasers, information technology equipment, communications systems, microphone systems, and other applications.

At a basic level, common mode chokes work by using wound inductors which consists of two or more conductors wound around a ferromagnetic core. Wound inductors, such as the EXC-28CE900U, provide a high level of inductance, allowing current to pass through them while also blocking the external noise caused by AC or harmonic currents. This inductive process is what allows the EXC-28CE900U to be used for power converters, as it is able to filter both differential and common mode noise.

The wound inductor plays an important role in the proper functioning of the EXC-28CE900U choke. The inductor works by regulating the current flow through the system and blocks out any external noise currents. It also forms the core of the choke, which holds the windings and provides an electrical connection for the external components. The winding of the EXC-28CE900U choke helps prevent ground loops, which can cause noise, interference, and damage to the system.

The EXC-28CE900U common mode choke also has a number of features that allow it to be used in a wide variety of applications. It has a high inductance value of 28µH which allows it to provide an effective filter for the AC and harmonic noise generated from power converters. It also has a very low profile height which allows it to be used in applications with limited space requirements. Additionally, its high current capacity makes it suitable for high-power applications.

In summary, the EXC-28CE900U is a common mode choke that is designed to capture undesired noise and provide effective EMC control in a wide variety of applications. Its wound inductor has a high inductance value which allows it to block out external noise currents while allowing direct current to pass through without any interference. Its high current capacity, low profile, and wide range of applications make it an ideal choice for power converters in a variety of applications.

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