CMS3-11-R

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Common Mode Chokes typically include a set of three inductors that are connected solution, each of which is characterized with a specific constructed geometry. The most well-known example of this kind of choke is the CMS3-11-R, which is a combination of three inductors that form one complete choke. This type of choke works by limiting common mode currents while simultaneously allowing for an uninterrupted pass of normal mode currents.

The CMS3-11-R application field is a special form of the E-choke, also known as an EMI filter. It is a component used to control and reduce electrical interference across an electrical power system. It is used in scenarios where an electric signal needs to be reduced or filtered when it is either sent or received. This reduction reduces the amount of electromagnetic radiation into the surrounding environment.

The structure of the CMS3-11-R is complex, designed to reduce electrical interference across low and medium frequencies. The choke has three copper windings which act as the inductive elements. Each winding is designed in a unique and balanced form, in order to provide an effective electrical filtering system. The three inductors of the choke are connected to three separate windings. This allows the choke to efficiently limit the leakage between winding and winding.

The working principle of the CMS3-11-R is based on the Faraday\'s law, which states: “ Any change in the magnetic field created by a conductor induces an electromotive force in the same conductor”. This law is applied to the choke by placing the three coils close to each other, and connecting them in a way that allows the induced CM current to flow through the coils in the same direction. This way the total effect of the CM current is canceled out, while allowing the normal mode current to flow unhindered.

The CMS3-11-R is used in areas where robust shielding against electromagnetic radiation is required such as medical equipment, computers, power system, telecommunication networks, aircraft, automotive products, low and medium frequency electrical power systems and more. It is an ideal solution for many diverse applications due to the low attenuation losses, small size and high efficiency.

In conclusion, the CMS3-11-R is an effective solution for providing robust shielding against electromagnetic radiation. Its unique design allows for the effective cancelling of extremely strong common mode currents while allowing the normal mode currents to flow freely. The choke offers a high degree of efficiency and a small size, making it suitable for a wide range of applications in low to medium frequencies.

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