CM6460-185

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Common mode chokes are passive inductive components manufactured using coils of wire to offer high-frequency filtering capabilities. The CM6460-185 Common Mode Choke is a surface-mount component designed by TDK Corporation that is used primarily in power-line applications, aimed at suppressing common-mode noise in power lines.

Application Field

The CM6460-185 is a part of TDK\'s low-saturation power line choke series. Its application field is particularly designed for use in consumer electronics and industrial equipment, where the choke is used to meet emissions regulations and reduce the amount of noise in the device itself. It also is useful in providing power line noise reduction in communications system, such as home networks, wired PoE (Power Over Ethernet), and Ethernet applications.

Working Principle

The working principle of the CM 6460-185 is based on electromagnetic induction. It relies on an On-chip transformer, in which the transmission line is wrapped around a ferrite core. This core consists of two or more windings, all wound around the same ferrite core.

When a current flows through one of the windings, a magnetic field is generated, which induces a voltage on the other winding. This voltage is a replica of the voltage across the source winding, minus the resistance and capacitance of the transmission line. The higher the frequency of the input, the higher the induced voltage.

The CM 6460-185 also includes an internal circuit that allows it to block high-frequency noise from passing through the transmission line. This is done by connecting all of the windings together so that the currents passing through each of the windings are in-phase. This ensures that the induced voltage on each winding is equal, thus preventing high-frequency noise from passing through.

Conclusion

The CM6460-185 Common Mode Choke by TDK Corporation is a passive inductive component designed for use in power-line applications, aimed at suppressing common-mode noise in power lines. It is useful in providing power line noise reduction in communication systems and consumer electronics, as it allows the device to meet emissions regulations and reduce the amount of noise output. The working principle of the CM 6460-185 relies on electromagnetic induction, with the transmission line wrapped around a ferrite core. It also includes an internal circuit that allows it to block high-frequency noise from passing through the transmission line.

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