2752065446

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Common Mode Chokes, or CM chokes, is a specialized type of electronic component used to suppress high-frequency noise in electronic applications. The most common application of CM chokes is in power supplies and power-converter circuits, where it helps reduce the level of high-frequency ripple content. Other applications can be found in communication systems, where the chokes are used to ensure the proper operation of high-speed modems and other communication systems.

The main functional element of a CM chokes is the toroidal core. A toroidal core consists of several layers of insulated copper wire wound around a moulded plastic or metal core. The electric circuit is opened by intersecting the windings of the core, forming a crude type of inductor. The inductor is responsible for filtering out the high-frequency noise in a circuit by adding a “lag” to the signal and thus preventing the unwanted noise from propagating. The CM choke is thus said to provide Common Mode Filtering.

The working principle of a CM choke is that it impedes the flow of currents on a signal line, increasing the series inductance of the line and thus reducing the noise-induced voltage fluctuations in the line. When two electric circuits are connected together, the electric potential of each circuit can be equal, resulting in what is known as a common mode voltage. However, if the impedance of each circuit is unequal, then the electric potential of the two circuits can either be different or remain equal, depending on the higher impedance.

A CM choke is designed to provide a balanced, common mode impedance across two or more circuits by adding an inductive reactance across the circuit that is equal to the difference between the two voltages. This ensures that the voltage fluctuations on the signal line do not exceed the set level. A properly designed CM choke can thus effectively reduce noise in the circuit by up to 40dB.

CM chokes are available in many different shapes and sizes, and with different coil configurations, depending on the purpose. One of the most common configurations is the 2752065446 application field, which is used in power supplies and power converters. This type of choke typically consists of a single, double, or quadruple winding coil and is designed to provide low-resistance and low-impedance common mode noise suppression at high frequencies. Other types of chokes include multi-winding and multiple core chokes.

In addition to providing common mode noise suppression, CM chokes also help to improve the overall efficiency of a circuit by reducing the amount of power that is lost in the circuit due to resistive losses. This improved efficiency results in greater power savings, which in turn reduces the operating costs of the system.

CM chokes have become increasingly popular in recent years due to their wide range of applications. They are used in a variety of power supplies, DC-to-DC converters, motor drives, and communication systems, among other electronic applications. With their excellent filtering capability, CM chokes offer a cost-effective and reliable solution for suppressing high-frequency noise in many types of electronic systems.

The specific data is subject to PDF, and the above content is for reference