ET2825-025 Filters

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Common mode chokes (CMCs) are a type of electrical noise filter used in various electrical circuits for the purpose of reducing electromagnetic interference (EMI). CMCs have become increasingly important and used in the modern digital world due to the growing complexity and frequency of EMI and signal noise.

ET2825-025 is one of the most popular and widely used CMCs in the industry. This specific product was designed and manufactured by Electrocube, Inc, a global leader in magnetics technology. ET2825-025 is specially designed to reduce both common and differential mode noise in various electronic circuits. The product features a two-coil construction with an aluminum 1/4”X 5/8” core, providing a wide frequency range of 160 kHz to 10 MHz. It also comes with an operating temperature range of -40° to + 125°C and is ozone resistant. This makes it an ideal choice for a variety of applications.

The working principle of ET2825-025 is based on the ability of the choke to reduce the common mode voltage. When the common mode voltage is negative, the first coil of the CMC has a positive voltage while the second coil has a negative voltage. This creates a situation where the first coil’s induced current opposes the second coil’s induced current, reducing the overall common mode voltage. When the common mode voltage is positive, the opposite situation occurs and the first coil’s induced current supports the second coil’s induced current, increasing the overall common mode voltage.

The most common application of ET2825-025 is in the switching power supplies. These supplies employ high switching frequencies and generate a lot of EMI, especially in the form of common mode noise. Using common mode chokes, like ET2825-025, these supplies can reduce this EMI and be compliant to various safety standards such as the European EMC Directive and the UL 60950-1 Standard.

The ET2825-025 can also be used in other applications, such as signal lines, audio and video equipment, and even automotive applications. Its wide frequency range and ozone resistance makes it suitable for use in applications that require a wide range of operational temperatures. Additionally, its two-coil construction allows for the reduction of differential mode noise, in addition to the common mode noise, which makes it particularly useful for applications that involve both types of noise.

In conclusion, the ET2825-025 CMC is a great choice for a wide variety of noise reduction applications, which makes it an ideal choice for professionals looking for an effective and reliable solution for reducing EMI in their applications. It is especially valuable in reducing common mode noise, as well as different types of noise, making it the perfect choice for complex applications.

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