RN212-0.6-02

Common Mode Chokes

Common Mode Choke (CMC) is a kind of passive electronic component, which is used for noise suppression and common mode rejection of a circuit. It is used mainly in the power supply side of AC/DC and DC/DC converter circuits. RN212-0.6-02 is a product belonging to the CMC family that is designed based on advanced EMI technology.

Application Field of RN212-0.6-02

RN212-0.6-02 can be used in various application fields, such as automotive, consumer, power supply, and power electronics. It can be used in applications to reduce or eliminate differential and common mode voltage noise in AC/DC or DC/DC power converter circuits, thus improving system stability.

The unique construction of the RN212-0.6-02 allows it to reject common-mode and differential-mode noise over a wide frequency range (common-mode noise from 150 KHz to 1MHz, differential-mode from 2MHz to 3MHz). This makes the RN212-0.6-02 applicable for suppressing conducted EMC noise in many applications, such as electric vehicles, consumer electronics, medical equipment, industrial automation etc.

Working Principle of RN212-0.6-02

To understand the working principle of the RN212-0.6-02, it is important to first understand the concept of common-mode choke. Common mode choke is a kind of passive filter which couples and attenuates high-frequency noise on the power source side while connecting the ground and allowing only normal current to flow. The RN212-0.6-02 follows this concept with its built-in common mode choke filter, which reduces the output voltage ripple caused by the differential-mode noise while effectively blocking the common-mode noise.

The RN212-0.6-02 employs a pair of wire wound inductors with symmetrical windings to reduce the common-mode noise over a wide frequency range and improve noise suppression. The inductors in the filter act as coupled inductors to trap the noise and create a low-impedance path around the unwanted noise. By doing so, the inductor blocks the noise from going back to the input and significantly reduces its level.

In addition, the RN212-0.6-02 is fitted with a ferrite core, which further strengthens the ability to reject common-mode noise. The ferrite core consists of material with high permeability, which effectively blocks the noise while allowing the normal current to pass through. This improves the noise suppression even further.

Furthermore, the unit also includes a pair of rectifiers for enhanced noise rejection in high-frequency applications. The rectifiers create a diodic bridge which blocks the undesirable high frequency noise.

Conclusion

RN212-0.6-02 is a common mode choke specially designed to reduce conducted EMC noise in power converter designs. It is mainly used in power supply side of AC/DC and DC/DC converter circuits and applicable in many applications. The product takes advantage of advanced EMI technology with the combination of wire-wound inductors, ferrite core and rectifiers to reduce noise on the power source side.