EH28-3.0-02-5M0

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Common mode chokes are devices that are used to reduce the unwanted high-frequency signals of electric noise from AC power lines. In this article, we will take a closer look at the EH28-3.0-02-5M0 and the applications and working principles associated with it.

The EH28-3.0-02-5M0

The EH28-3.0-02-5M0 is a common mode choke with a rated inductance of 3.0 μH and an peak frequency of 8MHz. It has a rated current of 5A. The EH28-3.0-02-5M0 has a T-network configuration, which means it is composed of two inductors and one capacitor. It is a surface mount device that is used in a variety of applications, including motor drive systems, power supplies, and telecommunications.

Applications of the EH28-3.0-02-5M0

The EH28-3.0-02-5M0 is primarily used as an EMI suppression device in motor drive systems, power supplies, and telecommunications applications. The choke is often used to suppress high-frequency signals such as radio frequency interference (RFI) and electromagnetic interference (EMI). In motor drive systems, the choke is used to suppress common mode noise in the motor drive, while in power supplies, the choke is used to reduce conducted emissions.

In telecommunications applications, the EH28-3.0-02-5M0 can be used as an EMI suppression device. The choke can be used to reduce both conducted and radiated emissions that can cause interference to the system. The choke can also be used to suppress high-frequency signals that could cause interference to other equipment, such as radio or television broadcasts.

Working Principle

The EH28-3.0-02-5M0 works by creating a “common mode” in the circuit. This common mode is a combination of two signals that are out of phase with each other, which cancels out the unwanted high-frequency signals. The common mode also helps reduce the coupling between signal paths, thus reducing the amount of EMI/RFI conducted between the signal paths. This helps to preserve the integrity of the signal being transmitted.

The choke works by having two inductors and one capacitor. The two inductors are in series and the capacitor is connected in parallel. The inductors act as a low-pass filter, allowing low-frequency signals to pass through while blocking out the unwanted high-frequency signals. The capacitor, on the other hand, works to reduce the capacitance between the signal paths, thus further reducing the amount of high-frequency signals that can interfere with the signal.

Conclusion

In conclusion, the EH28-3.0-02-5M0 is a common mode choke that is used for a variety of applications such as motor drive systems, power supplies and telecommunications. The working principles of the choke involve two inductors and one capacitor that work together to create a common mode and to reduce unwanted high-frequency signals. The application of the EH28-3.0-02-5M0 is invaluable for reducing EMI and RFI and preserving the integrity of the signal being transmitted.

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