CMS3-10-R Filters

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Common mode chokes are electronic components that are used to reduce and suppress electromagnetic interference.

CMS3-10-R, or Common Mode Choke, is a very popular choice for common mode choke applications. This choke is composed of three symmetric windings connected together, and is available in various sizes and inductances. The windings are constructed using round or rectangular conductors with a minimum wire diameter of 0.35 mm (1 mil). Each winding consists of three wires in series, with each winding having the same inductance. The overall inductance of the choke is the sum of the three windings.

CMS3-10-R is commonly used in board level impedance applications, especially for noise reduction, such as:

• Power supply circuitry and DC-to-DC converters
• Switched Mode Power Supplies
• Electromagnetic Interference Filters
• RF and high-speed applications

The most common application of the CMS3-10-R is in the form of an RF filter, to reduce electromagnetic interference from digital circuits. It is also used in various high frequency applications, like cellular phones and wireless communications. Its small size, low cost, and excellent performance make it one of the most popular chokes among engineers.

The CMS3-10-R choke has several advantages over other types of chokes. It is small in size and low in cost, making it a great choice for space-constrained applications. It is also very reliable and has high current capacity.

The main purpose of the CMS3-10-R is to reduce common mode electromagnetic interference. To achieve this, it has two major components. First, it utilizes air dielectric spacing between the windings, which provides isolation and helps to reduce the common mode noise. Second, it also has a winding construction with high inductance, which acts as a filter and helps to suppress the electromagnetic signals. This combination of air dielectric spacing and winding construction creates an efficient noise-suppression component.

The CMS3-10-R choke is also designed to reduce the effects of crosstalk. This occurs when the noise signals produced by one device are picked up by another device, and can lead to problems such as interference and poor performance. By using the air dielectric spacing feature, the CMS3-10-R ensures that these signals are not picked up by other circuits, thus eliminating crosstalk.

In conclusion, the CMS3-10-R common mode choke is an effective and reliable way to reduce electromagnetic interference in a variety of applications. Its small size and cost make it attractive for use in board level impedance applications, including RF filtering, switching power supplies, EMI filters, and high speed applications. With its high current capacity and air dielectric spacing feature, the CMS3-10-R is an excellent choice for noise reduction and crosstalk suppression.

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