RN122-4-02-1

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Common Mode Chokes

The RN122-4-02-1 is a common-mode choke, a type of inductor used to provide interference suppression on circuits with high-frequency interference. The common-mode choke is designed to block high-frequency noise from external sources, allowing only the desired signal to pass. It acts as an impedance to high-frequency signals and has the capability to reduce EMI (electromagnetic interference).

Application Field

RN122-4-02-1 common-mode choke is mainly used in motor-control systems, power-electronics systems, and high-speed digital and network devices. In motor-control systems, it is used to suppress the high-frequency interference created by electric motors when energized, so that the signal generated by the motor can be accurately read by the system controller. On power-electronics systems, it is used to suppress high-frequency interference caused by the switching of power semiconductors, ensuring that the power switching devices can be accurately controlled without introducing interference into the system. On high-speed digital and network devices, it is used to suppress the high-frequency noise generated by digital and network devices, allowing the devices to operate in fast data-transfer modes without introducing interference into the system.

Working Principle

The RN122-4-02-1 common-mode choke works on the principle of inductance, which is the ability of a wire coil to produce an electromotive force (EMF) by inducing a magnetic field when a current passes through it. The choke consists of two sets of coils, one wrapped around the other, with the same number of turns in each coil. The two coils create a loop, forming what is known as an air-core inductor. When current passes through the choke, the coils generate a magnetic field that opposes the current, resulting in an opposition to changing currents, also known as inductive reactance.

In the case of high-frequency interference, the two coils of the choke oppose the interference because of the induced EMF. The interference is unable to pass through the choke and is instead attenuated, allowing only the desired signal to pass. This attenuation of the interference allows the equipment it is connected to remain free of interference, thus ensuring the accuracy and reliability of the system.

The RN122-4-02-1 common-mode choke can also be used to reduce power losses in electronic circuits due to electromagnetic interference, as it can reduce the amount of current needed to flow through the circuit. By blocking interference and reducing power losses, the choke can improve the energy efficiency of the system and reduce the cost of operation.

Conclusion

The RN122-4-02-1 common-mode choke is an effective tool for suppressing high-frequency interference in electronic circuits. It can be used to reduce electromagnetic interference, power losses, and cost of operation. By blocking improper signals, it also ensures a reliable and accurate system. Thus, the common-mode choke is a highly advantageous device for a variety of industries.

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