SBSGP5000102MXR Filters

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EMI/RFI filters are basically networks of passive electrical components that are designed to limit disturbances caused by electromagnetic radiation coming to or from a component. The SBSGP5000102MXR is one such filter. It has a specific application and a unique working principle.

The SBSGP5000102MXR offers low-pass filtering for differential-mode and common-mode interference; the two main forms of electromagnetic interference. It is designed for use in AC/DC power systems, and has a peak current rating of up to 30A, depending on the voltage used. The SBSGP5000102MXR also has a low DC Resistance, which makes it ideal for high power applications.

The filter works on a principle known as the skin effect. As electricity passes through a conductor, its electrons are repelled away from the walls of the conductor by the electromagnetic effect of the surrounding magnetic field. This causes the current to be concentrated on the outer layers of the conductor; the higher the frequency, the larger the concentration. This increases the resistance of the conductor, thereby limiting the current.

The SBSGP5000102MXR incorporates two separate copper loops that are magnetically coupled. These loops form a capacitor with a resonance frequency determined by the design of the loops. The resonance frequency of the capacitor is important as it determines the frequency range of the filter. In the case of the SBSGP5000102MXR, it is designed to filter out disturbance frequencies from approximately 1kHz to 30MHz.

When current is fed into the primary winding of the loop, a magnetic field is created that induces a current in the secondary winding. This current is out of phase with the primary current, so it creates a low-pass filter that attenuates all frequencies above the resonance frequency. This attenuates any high frequency interference, so that only the desired voltage or signal is allowed to pass through.

The SBSGP5000102MXR is an ideal choice for applications that require low-pass filtering of differential-mode and common-mode interference. Its skin effect working principle and low DC resistance make it ideal for high-power applications in AC/DC power systems.

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