SC-03-10G Filters

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Common Mode Chokes are magnetic components used to suppress common mode electrical noise that is transmitted along the same power line. The SC-03-10G is a common mode choke that is comprised of an electro-magnetic coil and an embedded core. The product is used in power supplies, servo motor steering systems, electric motors, battery charging systems, DC-DC converters, and other power-conversion applications. In order to understand the application field and working principle of the SC-03-10G, this article will discuss the following topics: common mode noise, common mode choke construction, common mode choke working principle, and applications of the SC-03-10G.

Common Mode Noise is a form of power line noise that occurs when an electrical or electronic circuit receives an alternating current (AC) signal. This type of noise is characterized by a voltage that is equal in magnitude but opposite in polarity between a differential signal pair. It is also known as “ground-loop noise” because it forms a loop between ground points that potentially transfers interference between two circuits. Common Mode Noise is particularly problematic in high-frequency applications where noise bandwidths can exceed several gigahertz. It is especially harmful in applications such as servo motor steering systems and electric motors, where excessive common mode noise can cause significant stability issues.

Common Mode Chokes are used to reduce common mode noise by inducing an inductance in a transmission line. They are designed to couple common mode current and suppress common mode noise. The inductance of a common mode choke is determined by the number of turns, core material, and cross-sectional area of the coil. The typical choke design consists of multiple windings and an embedded core. The coil is usually wound around an iron-based core material, such as ferrite.

The working principle of a common mode choke is based on the fact that energy stored in a magnetic field is directly proportional to the rate at which the field changes. In a differential conductive system, the current passing through opposite ends of a common mode choke generate a magnetic field that is proportional to the rate of change of the current. This magnetic field induces an impedance that opposes the flow of current and suppresses common mode noise.

The SC-03-10G is a 10A, 50mH common mode choke component. It is designed for applications such as power supplies, servo motor steering systems, electric motors, battery charging systems, and DC-DC converters. The SC-03-10G is constructed with a low-profile moulded case that encases an electro-magnetic coil, which is embedded in an iron-based core material. The SC-03-10G provides excellent common mode noise suppression performance in a wide range of power conversion applications. It features a current rating of 10A, a typical inductance of 50mH, and a frequency range of 300 kHz to 800 kHz.

In summary, the SC-03-10G is a common mode choke component designed for applications in which common mode noise suppression is needed. The product is constructed with an electro-magnetic coil and an embedded core. Its working principle is based on the fact that energy stored in a magnetic field is proportional to the rate at which the field changes. The SC-03-10G provides excellent common mode noise suppression performance in a wide range of power-conversion applications. It is suitable for use in applications such as power supplies, servo motor steering systems, electric motors, battery charging systems, and DC-DC converters.

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