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Method for manufacturing mutually-coupled filter chokes

A filter choke, mutual coupling technology, applied in the manufacture of inductors/transformers/magnets, inductors with magnetic cores, transformer/inductor coils/windings/connections, etc. problems such as poor reliability, to achieve the effect of simplifying the design of the circuit, improving the dynamic performance, and reducing the volume

Inactive Publication Date: 2010-05-19
AVIC NO 631 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects of complex design and poor reliability of existing filter choke circuits, the present invention provides a mutual coupling filter choke

Method used

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  • Method for manufacturing mutually-coupled filter chokes
  • Method for manufacturing mutually-coupled filter chokes
  • Method for manufacturing mutually-coupled filter chokes

Examples

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Embodiment Construction

[0035] 1. In view of the specific situation of multiple output of the power supply, the output filter inductor should not use independent inductors, but should use mutually coupled inductors to realize the filter energy storage for the four outputs of DC +5V, ±15V, and +10V. The output filter inductor is wound on a magnetic core, only the +5V main circuit is controlled, and the output characteristics are better, while the ±15V and +10V three circuits are respectively stabilized by three-terminal voltage regulators.

[0036] The equivalent circuit of multiple output coupling inductors is as figure 1 As shown, the mathematical model of the transformer is introduced for analysis, and its equation is shown in formula (1).

[0037] V it - V oi = L i ( di i / dt ) + ...

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Abstract

The invention provides a method for manufacturing mutually-coupled filter chokes, which comprises the following steps of: firstly, according to a relation between the output power and the magnetic core size provided by a magnetic core material manual of a manufacturer and by combining a multiplexed output power supply circuit, analyzing and comparing the magnetic core material and the performance of a coupling inductor to finally determine a needed magnetic core; secondly, selecting the turn ratio of the inductor, wherein the turn ratio of the inductor is required to be equal to that of an output winding of a main transformer; and finally, calculating the turn number to determine the filter chokes. The method solves the technical problems that the conventional filter chokes have complex circuit designs and poor reliability, and has the advantages of high practicability, easy processing, low cost and the like.

Description

technical field [0001] The invention relates to a choke coil, in particular to a manufacturing method of a mutual coupled filter choke coil. Background technique [0002] In the existing electronic products, although the output filter choke coil has been widely used, most of them adopt the filter mode of independent inductor, which has the disadvantages of complicated circuit design and poor reliability. Contents of the invention [0003] In order to solve the defects of complex design and poor reliability of existing filter choke circuits, the invention provides a mutual coupled filter choke coil. [0004] Technical scheme of the present invention is as follows: [0005] The manufacturing method of the mutual coupled filter choke provided by the present invention comprises the following steps: [0006] Step 1, select the magnetic core: According to the relationship between the output power and the size of the magnetic core given in the magnetic core material manual of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/04H01F27/24H01F27/28H01F41/00
Inventor 杨宁惠晓强
Owner AVIC NO 631 RES INST
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