3000-472

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Common Mode Chokes (CMCs) are ubiquitous components used to reduce radio frequency (RF) interference in electronic circuits. The application field and working principle of a 3000-472 CMC are discussed here.

The 3000-472 CMC is a line-to-ground differential inductor (via-ground inductor) whose primary purpose is to remove common-mode noise and interference from complex electronics systems, such as communication systems, industrial automation systems, automated test equipment, and medical devices. The design of the 3000-472 CMC is based on a pair of shielded ferrite cores, each of which contains a single winding of spiral-wound wire. This dual winding creates a differential inductance that acts to reject noise and interference along both signal leads, and provides a high impedance path for the common-mode noise. The cores also act as a barrier to the transmission of high-frequency signals, preventing them from escaping into the environment or entering the electronics system.

The 3000-472 CMC works on the principle of self-resonance. When alternating current is applied to either winding, the windings become magnetically coupled and generate a common-mode voltage that is proportional to the frequency of the alternating current. As the frequency increases, the voltage increases and the core\'s magnetic field intensifies, creating a self-resonating effect. At a certain point, the coupling is strong enough to completely suppress the common-mode voltage and any noise on the signal lines.

The 3000-472 CMC has a wide range of applications in various types of communication systems, industrial automation, automated test systems, and medical devices. It can be used to suppress radio frequency (RF) noise in antenna circuits, reduce cross-talk between channels in wireless communication systems, reduce EMI in sensitive medical instrumentation, and reduce RF interference in automotive sensors. It can also be used in a wide variety of industrial automation applications, such as industrial robots, automated assembly lines, and process control systems. By providing power line noise suppression, the 3000-472 CMC can reduce the risk of accidents or malfunctions in highly-sensitive electronic systems.

The 3000-472 CMC is an essential component in many electronic systems, providing a reliable and cost-effective solution for removing common-mode noise and interference. Its wide range of applications and self-resonating design make it a valuable asset in the design of complex electronics systems, and its compact size makes it highly suitable for tight spaces. As a result, the 3000-472 CMC has become an indispensable part of many modern electronics systems.

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