Common Mode Chokes

A common mode choke (CMC) is a type of filter designed to reduce common mode current from a device. Common mode current is an electrical phenomenon that occurs when two or more circuit paths create undesired currents in a device when they are in close proximity. CMCs act to reduce this current by introducing a current-dependant voltage drop when a specific level of common mode current is detected. The CM7560R-334 is an example of a CMC.

CM7560R-334 Application Field and Working Principle

The CM7560R-334 is a common mode choke designed to minimize common mode noise in shielded cables. It is designed for circuits running at frequencies of up to 1000 kHz and offers up to 50 dB of common mode attenuation. It is especially useful in applications requiring very low impedance along with high frequency noise suppression.

The CM7560R-334 is composed of a ferrite core with two windings. The windings are connected in series with each other by conducting strips. The ferrite core\'s permeability, as well as its magnetic permeability, determine the amount of voltage drop that is achieved when a specific common mode current level is detected. As the common mode current increases, the impedance also increases and, consequently, the voltage drop along the coil increases too.

The CM7560R-334 also has a built-in common mode attenuator. This is used to reduce common mode noise before it reaches the sensitive areas of a circuit. This is done by changing the current flow within the common mode choke\'s windings as well as the impedance of the common mode current. By doing this, the amount of common mode current that is allowed to pass through is reduced, thus providing a greater level of common mode noise reduction.

One of the key benefits of using the CM7560R-334 is the low insertion loss it offers. Insertion loss refers to the reduction in signal strength that is caused when a device is inserted into a circuit. As the CM7560R-334 is designed to minimize common mode noise, it will not affect the signal strength as much as other types of filters.

The CM7560R-334 can be used in a wide range of applications. It is suitable for use in industrial networks, power supplies, telecommunications systems, automobile electronics and many other areas. Its compact size and light weight also make it well-suited for use in applications where space is limited.

In summary, the CM7560R-334 is a common mode choke designed to reduce common mode noise in shielded cables. It is composed of a ferrite core with two windings and a built-in common mode attenuator. It offers high frequency noise suppression and low insertion loss. The CM7560R-334 is suitable for a wide range of applications and is especially useful in areas where space is limited.