CM1457-04CP Filters

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EMI/RFI filters are electronic filters made to protect electrical equipment from electromagnetic interference (EMI) and radio-frequency interference (RFI). They are commonly used in communication systems, computer systems, instrumentation systems, and more. The CM1457-04CP EMI/RFI filter is a four-pole filter designed for broadband operation. It is an efficient and reliable choice for a wide range of applications.

The CM1457-04CP is an LC filter configuration, utilizing inductors and capacitors in a parallel circuit. It has two distinct advantages over an RC filter configuration. First, LC filters are more efficient in reducing conducted emissions, making them the preferred choice for many applications. Second, they are more compact than RC filters, allowing for significantly more EMI/RFI protection in a very small form factor.

The four-pole design of the CM1457-04CP provides four distinct stages of attenuation, allowing for higher levels of EMI/RFI protection. This makes the filter suitable for use in sensitive home applications, commercial audio-visual equipment, networking and telecommunications systems, and military and aerospace systems. The filter can also be used to suppress high-level harmonics in motor control and general power line circuits.

The working principle of the CM1457-04CP relies on the fact that induction provides a low-pass effect to the circuit. This causes current and voltage signals to be delayed and attenuated as they pass through the inductors. Capacitors are then used to balance the circuit out and reduce any remaining EMI/RFI noise. When these two components are combined in the four-pole design, they act together to provide a high level of attenuation, eliminating unwanted noise from electrical equipment.

In addition to the attenuation of EMI/RFI noise, the CM1457-04CP also provides noise isolation through the use of low-impedance networks. This isolates the filtered signals from one another, reducing crosstalk and ensuring that signals remain true and noise-free throughout the system. This feature is especially valuable for sensitive audio-visual systems, where even small amounts of noise can degrade the quality of the sound or image.

The CM1457-04CP is an excellent choice for a wide range of applications. Its four-pole design provides superior EMI/RFI protection and noise isolation, making it suitable for even the most sensitive applications. With its efficient and reliable performance, this EMI/RFI filter is sure to provide reliable protection from unwanted noise in any system.

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