B82721A2122N020

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Common Mode Chokes (CMCs) are critical components used to control electromagnetic interference (EMI) in many industries. The B82721A2122N020 is an especially robust CMC and is a suitable choice for applications with a wide range of environmental conditions. In this article, we will discuss the application field and working principle of the B82721A2122N020.

Application Field of B82721A2122N020

The B82721A2122N020 is primarily used in power electronics, especially in medical equipment, power grids, drive systems, and automotive applications. It can be used to reduce common-mode interference and suppress high-frequency conducted emissions in cable harnesses. Its design can take into account the changing temperature conditions of all these application fields. It is able to maintain reliable operation while experiencing temperatures that range from -25°C to 125°C.

The component also provides cost-effective solutions for applications that require extended lifetimes under cyclic and constant load conditions. It is capable of operating in both static and dynamic conditions, delivering high electrical insulation between two surrounding conducting elements; this can help to prevent both coupling and intrusion of common-mode noise. Moreover, it can be mounted on the bottom or top of the PCB, depending on the application requirements.

Working Principle of B82721A2122N020

The B82721A2122N020 is based on an integrated magnetically coupled coil technology, also known as current balancing technology. The coil has two windings which are wound around a single core. The to windings are electrically insulated from each other but magnetically coupled. These two windings are referred to as line and counter-line windings. Due to the magnetic coupling, no galvanic isolation of the line and counter-line windings is required.

The device allows the current that flows into the line winding to be inductively coupled via the core material to the counter line winding. In this way, an equal, but opposite current is introduced into the counter-line winding. This is known as the current balancing effect. As a result, the electromagnetic interference produced in the line winding is reduced to a minimum, as the two currents cancel each other out. The optimal current amplitude for the two windings is determined by the size of the core and the number of turns in the coil.

The B82721A2122N020 also has EMC approved characteristics, which can help to reduce pulse reflections and improve conduction and radiation of electromagnetic noise. Additionally, its design has been optimized to minimize temperature rise, thus enhancing the component’s longevity.

Conclusion

In conclusion, the B82721A2122N020 is an excellent choice for applications in power electronics. Its reliable operation under wide-ranging temperature conditions, current balancing technology, and high electrical insulation all make it one of the most robust common-mode chokes available.

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