Filter components and their applications

Abstract

The invention relates to a filtering assembly, which comprises a filtering circuit board, a casing with a chamber, and a cover plate. A shielding plate is arranged in the chamber of the casing, and the shielding plate divides the chamber into left and right chambers. The filtering circuit board Fixed in the left chamber, the filter circuit board is installed with a filter circuit, the right chamber is equipped with a power conversion component, the input end of the filter circuit board is welded with an input lead, the output end of the filter circuit board is connected to the input end of the power conversion component, and the power supply Output leads are welded at the output end of the transformation component, and insulators are respectively arranged on the left and right side walls of the housing, and the insulators are fixed on the side walls of the housing, and the input and output leads pass through the insulators. The invention has the advantages of good shielding effect, high integration, small volume and strong anti-electromagnetic interference ability, improves the stability of the output voltage of the power conversion part, and ensures that the electromagnetic compatibility of the power conversion part meets the requirements of GJB.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a filter component and its application. Background technique [0002] As a device for filtering out clutter signals in circuits, filters are widely used in various electronic devices. In special-demand fields such as communication equipment, aerospace, and shipboard equipment, the electromagnetic environment has a wide frequency band and a strong field. The electromagnetic compatibility of power conversion components directly affects whether other equipment in the environment can operate safely and reliably. The power filter circuit board is a filter circuit composed of capacitors, inductors and resistors. The function of the power filter circuit board is to obtain a power signal of a specific frequency by connecting the power filter circuit board to the power supply, or to eliminate the power supply after a specific frequency. Signal. The power filter circuit board is a passiv...

AI Technical Summary

Problems solved by technology

The traditional power filter is connected to the power filter before or after the power conversion component, and the power conversion component and the power filter need to be connected through an external enemy power transmission wire. Due to the rich spectrum on the power transmission wire, it is easy to generate large Coupling and radiation interference signals. The electromagnetic compatibility of the power conversion components does not meet the GJB requirements, which affects the safe operation of other equipment in the environment. The traditional filter components are large in size, low in integration, single in function, and the output power signal is messy. The output voltage is unstable, there is no EMC filter function, and the application field of filter components is narrow

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