PEMI2STD/HT,115 Filters

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Electric and magnetic immunity are very important for the performance and reliability of all kinds of electronic products. In order to reduce the effects of radio frequency, electrostatic, and electromagnetic interference, EMI/RFI filters (LC, RC) networks are used. The PEMI2STD/HT series from Murata Electronics is a range of EMI/RFI filter networks designed to meet tight immunity requirements. In this article, the application fields and working principles of the PEMI2STD/HT series are discussed.

Application Fields

The PEMI2STD/HT series is designed for use in a wide range of applications, including automotive, home appliances, industrial automation, and medical products. It is suitable for applications requiring higher levels of noise suppression, such as those involving signals with high band widths and/or high frequencies. It is also suitable for electronic products that are subjected to higher levels of electromagnetic interference.

The PEMI2STD/HT series can be used in a variety of ways. The components can be used as individual filters for individual circuits, or they can be connected in a network to provide a common noise suppression solution for multiple circuits. In addition, they can be used in modules that provide an integrated solution to EMI reduction needs.

Working Principle

The PEMI2STD/HT series comprises of a range of LC and RC filter combinations configured into custom networks. The use of a combination of filters ensures that the PEMI2STD/HT series provides wideband noise suppression over a wide frequency range. The filters utilize a combination of inductors and capacitors, which are designed to reduce the interference caused by high-frequency radio waves and electrostatic discharges.

The LC filter networks are comprised of inductors connected in series and parallel combinations. The inductors are designed to attenuate high-frequency noise and radio signals. The RC filter networks are comprised of capacitors connected in series and parallel combinations. The capacitors are designed to reduce the interference caused by low-frequency signals and electrostatic discharges.

The LC and RC elements are connected in various network configurations depending on the specific application. For example, a configuration may be used to reduce the interference caused by a specific frequency range while allowing other frequencies to pass through unaffected. Also, more complex configurations may be used to provide a wideband reduction of all frequencies.

The PEMI2STD/HT series is designed to provide a wide range of immunity against a wide variety of electromagnetic interference. The components are designed to be highly reliable and to provide a long operating life even under extreme conditions.

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