ELK-E101FA Filters

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EMI/RFI Filters (LC, RC Networks) are essential components used in a variety of electronics applications to protect sensitive circuits from electromagnetic interference. ELK-E101FA is a high performance RC filter designed to meet the stringent requirements for both superior passband performance and high isolation performance. This article provides an overview of the ELK-E101FA EMI/RFI filter, its application field and its working principle.

The ELK-E101FA EMI/RFI filter is a multi-stage, two-dimensional passive filter. It features a series RC network combined with a series-parallel resonate network, providing high attenuation performance at the frequencies of interest while maintaining a low insertion loss. The filter is designed to have a minimum of 50 dB attenuation at 10MHz, which provides superior performance for a wide range of applications. The filter’s wide operating temperature range of -20 to 65℃ ensures reliable protection in any environment.

The ELK-E101FA EMI/RFI filter is well suited for applications where both high passband performance and high isolation performance are critical. The filter can be used to protect sensitive circuit components from electromagnetic interference generated by nearby sources, such as wall outlets, power cables and radio transmitters. In high-precision equipment, the filter can be used to prevent interference from external sources from corrupting signals and degrading performance. Additionally, the filter can be used with high-power equipment, such as motor controllers, to protect against damage from surge currents.

The working principle of the ELK-E101FA EMI/RFI filter is based on the principle of impedance transformation. The filter is constructed from a series-parallel network of resistors and capacitors. In the filter, the capacitors form a continuous series resonance circuit, while the resistors form a parallel impedance-transforming network. When an electromagnetic wave encounters the filter, the wave is transformed into a time-varying current, which is then attenuated by the series-parallel resistor-capacitor network. As the wave passes through the filter, its amplitude is reduced, while its phase is shifted.

In summary, the ELK-E101FA EMI/RFI filter is a high-performance, two-dimensional passive filter designed to provide superior passband performance and high isolation performance in a variety of applications. The filter is well suited for applications where both passband performance and isolation performance are critical, such as high-precision equipment and high-power equipment. The filter works by transforming an incoming electromagnetic wave into a time-varying current, attenuating its amplitude and shifting its phase.

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