FN351-280-37

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Power Line Filter Modules are devices that can reduce the level of electromagnetic interference (EMI) for electronic circuits connected to the power line. These filter modules, such as the FN351-280-37, are designed to reduce sub-harmonic, harmonic, and EMI noise from the power line, reducing the spread of interference between the various electronic circuits. The following will discuss the application fields and working principle of the FN351-280-37.

The FN351-280-37 is designed for various audio/video/data networking applications. These applications could include radio/television broadcast receivers, digital video recorder systems (DVRS), wireless routers, cable/satellite set-top boxes, and other audio/video equipment. It is important that these types of devices are fitted with a line filter to reduce the level of radiated emissions, which could potentially interfere with other nearby devices.

The FN351-280-37 line filter is a single-phase two-wire series filter module. It is designed to provide an effective common-mode noise filtering with only two capacitors and a single-stage inductor. This module employs a patented inductor technology to provide improved attenuation for harmonic noise, while at the same time significantly reducing EMI. This technology ensures that the FN351-280-37 filter module can reduce noise levels by up to 50dB in a wide frequency range of 10kHz to 30MHz.

This module is capable of providing effective in-line common-mode noise attenuation for high-voltage systems. With the use of two capacitors in series, it can reject common-mode transients, providing up to 50dB of attenuation for broadband noise. Additionally, it has two slots in the assembly that can provide three-phase circuits with effective noise filtering. Furthermore, the FN351-280-37 filter module is designed to be low-profile, allowing it to be easily installed in tight spaces.

The FN351-280-37 line filter module also has a working principle that ensures that it can effectively reduce the level of noise interference to sensitive electronic components connected to the power line. This line filter module is designed to work in two stages. The first stage consists of two capacitors connected in series between phases, which provide noise filtering in the high- and low-frequency ranges. The second stage consists of an inductor that operates in parallel between the two capacitors, providing additional noise filtering in the mid-frequency range.

The FN351-280-37 line filter module is also designed with a temperature compensation circuit that ensures that its components remain within their optimal performance range. This temperature compensation circuit is important as the components of the module can be affected by temperature changes, such as when the module is subject to large load currents or extreme temperatures. The thermal compensation circuit improves the stability of the filter, ensuring that it is able to perform more consistently.

In summary, the FN351-280-37 is a power line filter module designed for audio/video/data networking applications. Its two-stage filtering design and temperature compensation circuit ensure effective noise filtering and consistent performance. It can provide effective in-line common-mode noise attenuation for high-voltage systems, with increased attenuation for harmonic noises. As such, it is an effective EMI reduction device for devices connected to the power line.

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