ALFT-04-7

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Common mode chokes are an important type of component used in electrical and electromagnetic systems. ALFT-04-7 is one such component used in various applications.

An ALFT-04-7 common mode choke refers to a kind of toroidal inductor. As a three-terminal part, it is designed to provide a very low impedance to a common-mode signal noise while maintaining a high impedance to differential-mode noise. It is mainly used for filtering high common-mode currents on PCBs such as from electronic motor controls, computers and telecommunications. It is designed specifically to suppress the noise and keep only the required signal.

The core material of the ALFT-04-7 is high permeability ferrite with an inner winding diameter of 4 mm along the circumference of the core. The outer connection terminals are made from tinned copper wire with a diameter not less than 0.2 mm. This core material and winding diameter combination is designed to allow the choking factor to reach a high number (e.g., 200).

The working principle of ALFT-04-7 is quite straightforward. It involves the combination of high permeability ferrite and the metal conductive windings to create a magnetic field. This magnetic field has the ability to significantly reduce the amount of electromagnetic interference (EMI) generated by the device, making it ideal for use in applications where high levels of electromagnetic interference are a requirement (e.g., electronic motor controls). In addition, due to the high quality of the material and winding, ALFT-04-7 also boasts a number of features such as low EMI leakage, high rate of rejection, high stability, and excellent insulator protection.

ALFT-04-7 is commonly used in many applications, including DC-DC converters, switching power supplies, voltage regulators, electric motors, low-voltage transformers, power amplifiers, and audio circuitry. As a reliable component, ALFT-04-7 helps minimize electromagnetic interference and can be used to protect critical components such as integrated circuits (ICs) from EMI. For example, it is often used in DC-DC converters to provide filtering and noise reduction. Similarly, it is also used in voltage regulators to suppress transients that can potentially damage sensitive components.

ALFT-04-7 is also widely used in various audio circuitry applications such as amplifiers, speakers, and preamp circuits. It helps reduce noise and improve signal clarity. Moreover, the component can be used to reduce the amount of EMI generated from power amplifiers, as it suppresses unwanted noise and helps to prevent damaging levels of EMI.

Overall, ALFT-04-7 is an invaluable component in terms of filtering and noise reduction. Its combination of a high-permeability ferrite core and metal winding make it an excellent choice for controlling electromagnetic interference in various applications. It is used in many audio, power, and automotive electronics to provide a reliable and efficient means of controlling noise and improving performance.

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