CME2425-6

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Common mode chokes (CME2425-6) are an important element in the design of modern power electronic circuits. They provide valuable benefits such as reducing electromagnetic interference (EMI) and increasing power conversion efficiency. In this article, we will explore the CME2425-6 application field and working principle.

The CME2425-6 is a common mode choke with a center frequency of 24-25 MHz, maximum operating temperature of 81-85 degrees Celsius, and a two-level output voltage rating of 6 volts. It has a variety of applications, including in SMPS and automotive designs, as an input filter for EMI suppression, as a filter for pulse width modulated circuits, and as an output filter for voltage regulator modules. In addition, it is also used in telephone applications as a DC blocking capacitor.

The working principle of the CME2425-6 is based on the principle of inductance, which is the ability of a conductor to oppose changes in current. When current passes through the component, it creates a magnetic field that creates a force that impedes changes in current. This action is known as inductance, and it helps to reduce EMI and increase the efficiency of power conversion.

The CME2425-6 consists of two parts: a core and windings. The core is made of a ferromagnetic material, such as iron, and it helps to confine the electromagnetic field to the component. The windings are usually composed of copper or aluminum and are insulated to prevent electrical shorts. The core and windings are connected in series to form the complete common mode choke.

The CME2425-6 has two connections: an input and an output. When current is applied to the input, the core creates an alternating effective current, which creates a self-induced back emf voltage on the windings. This induces a current into the output, which is the common mode component. This component blocks out the unwanted electrical signals, while allowing the desired signals to pass through.

When the CME2425-6 is used as an input filter, it helps to reduce both high frequency EMI and low frequency ripples. It also helps to decrease power losses, improve efficiency, and protect other components from overcurrent and overvoltage conditions. When used as an output filter, the CME2425-6 helps to reduce voltage spikes and reduce noise on the output.

In summary, the CME2425-6 is a common mode choke with a wide range of applications. It consists of a core and windings, and it works by creating an alternating effective current that induces a voltage into the output. It is used as an input filter for EMI suppression and as an output filter for voltage regulators. It helps to reduce EMI, power losses, and increase power conversion efficiency.

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