CMS3-7-R

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Common Mode Chokes are an important addition to modern electrical systems and are often used to reduce common-mode currents in electronic circuits. The main application for these chokes is to reduce electromagnetic interference (EMI). The number after the acronym CMS identifies the number of turns, which determines how much inductance the choke has. For example, the CMS3-7-R is a three-turn common-mode choke that has a nominal inductance of 7mH.

The CMS3-7-R is designed for applications with high common-mode currents such as dc-dc converters, and it has a maximum rated current of 1.5A. It also has a maximum rated voltage of 200V, and it is UL/cUL recognized and RoHS compliant. The primary benefits of this choke are its small size and low cost.

The working principle of the CMS3-7-R is based on the concept of mutual inductance. When alternating current flows through the primary, a voltage will be induced in the secondary winding. The magnitude of the voltage will depend on the number of turns in the winding and the frequency of the current. The voltage can be used to oppose the current flow, thus creating a choke effect which limits the amount of current that can flow through the choke.

The choke can also reduce noise from conducted emissions by limiting the current through the choke. When the noise is applied to the choke, the flux will be created in the winding and this will induce a voltage in the secondary winding. This voltage can be used to oppose the noise and reduce the amounf of noise that is conducted through the choke.

The CMS3-7-R has been designed with precision to ensure it can perform in a variety of applications. It is perfect for dc-to-dc converters, switching power supplies, and motor drives. It is also suitable for applications such as inverters, LED lighting, and telecom equipment. It is easy to install and maintain and can be used in a variety of environments.

In summary, the CMS3-7-R is a three-turn common-mode choke with a nominal inductance of 7mH. It has a maximum current rating of 1.5A and a maximum voltage rating of 200V, and it is UL/cUL recognized and RoHS compliant. It is perfect for dc-to-dc converters, switching power supplies, motor drives, and other applications. It works based on the concept of mutual inductance, whereby the voltage induced in the secondary winding is used to oppose the current. This limits the amount of current that can flow through the choke, reducing noise from conducted emissions.

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