TCM1210G-900-2P-T200 Filters

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Common Mode Chokes (CMC) are a type of inductor used to reduce noise on signal lines by blocking common mode currents. They can also be used as a protection device to reduce the risk of electrical shock. The TCM1210G-900-2P-T200 CMC is a two-footer ground-mounted CMC with 200 turns per winding. The following will discuss the application field and working principle of the TCM1210G-900-2P-T200.

Application Field

The TCM1210G-900-2P-T200 CMC is primarily used in power supply line filtering applications. The CMC can filter out common mode interference from the power line, such as EM/RF noise, ground loop noise, and power supply surges. This CMC is also used in high-end audio and automotive applications, offering excellent common mode noise attenuation and interference suppression.

In addition, this CMC is also suitable for general circuit board mounting applications, such as protection from induced noise, EMI or RFI radiation, and to reduce power line EMI/RFI interference in industrial and other high-frequency applications.

Working Principle

The working principle of this CMC can be explained by the electric current flowing in the two windings. The current is proportional to the applied voltage. When a differential signal is applied to the two windings, the current is kept balanced across the two windings, as the input voltage of one winding is always equal to the input voltage of the other winding. Thus, the common-mode signal is blocked, while the differential signal is allowed to pass. This is why the CMC can effectively reduce common-mode interference.

In addition, the CMC also works as a protection device. The two windings of the CMC are connected in series, with one winding connected to the power line and the other winding connected to ground. If a fault in the power system or the equipment causes an overvoltage, the CMC will automatically limit the amount of overvoltage by changing its inductance. This will protect both the power system and the associated equipment from overvoltage damage.

Conclusion

The TCM1210G-900-2P-T200 is a two-footer ground-mounted CMC with 200 turns per winding. It is mainly used in filtering applications such as power supply line, EM/RF noise, and ground loop noise. It also functions as a protection device to limit overvoltage from faults in the power system or the equipment by changing its inductance. Thus, the TCM1210G-900-2P-T200 is an ideal solution for reducing common-mode noise and protecting the equipment from overvoltage damage.

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