CMT1-4-R

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Common mode chokes, also known as common mode filters, are widely used in power, signal and communications industries. They are used to effectively reduce the amount of interference between two circuits or systems. The CMT1-4-R is a type of common mode choke and provides good performance in various applications. In this article, we will discuss the application field and working principle of the CMT1-4-R.

Application Field

The CMT1-4-R is a popularly used type of common mode noise filter that can be used in a wide range of applications such as power electronic circuits, audio systems, automotive equipment, telecom systems, and power systems. It is a robust, high-performance EMI filter which is able to reduce the amount of differential and common mode interference, also known as EMI noise, that can occur in these systems. By using the CMT1-4-R, it is possible to achieve reliable and stable operation without any major disruption in the system.

Working Principle

The CMT1-4-R works by providing a low impedance path to common-mode noise. It achieves this by utilizing a series-connected second-order filter made up of an inductor and a capacitor. The two components in the filter work together to reduce the amount of common-mode noise in the system. The inductors used in the filter are designed specifically for the purpose of high-frequency attenuation. The inductors have a very low DC resistance, which ensures low power consumption from the process of attenuating the EMI noise.

The CMT1-4-R also features two capacitors in parallel, which helps create a protection circuit that provides a low-impedance path for common-mode current. The capacitors also ensure that the differential mode noise is blocked and does not interfere with the system. Additionally, the two parallel capacitors also contribute to the high-frequency attenuation of the system and thus reduce the amount of common-mode noise.

The CMT1-4-R is typically used with an external enclosure that is designed to protect the internal components of the filter from the environment. The enclosure usually comprises of a conductive metal casing with an insulator coating. The outer shielding of the filter helps to ensure that any emitted electromagnetic fields are reduced and diverted away from the system.

Conclusion

The CMT1-4-R is a popularly used type of common mode noise filter that provides reliable and stable performance across a wide range of applications. It utilizes a series-connected second-order filter made up of an inductor and a capacitor to provide a low impedance path for common-mode noise and protect against differential mode noise. The filter also features an external enclosure which blocks any emitted electromagnetic fields and divert them away from the system, thus ensuring reliable and stable performance of the system.

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