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Production process of low-frequency common mode choke

A technology of common-mode inductors and production technology, which is applied in the field of production technology of low-frequency common-mode inductors, can solve the problems of poor quality of low-frequency common-mode inductors, low production efficiency and short service life of low-frequency common-mode inductors, and achieve high production efficiency, The effect of low product scrap rate and long service life

Inactive Publication Date: 2019-08-16
NANJING ANSEN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing production methods for low-frequency common-mode inductors have poor quality, short service life, and low production efficiency of low-frequency common-mode inductors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The production process of the low-frequency common-mode inductor of the present invention includes the following steps, step 1, picking materials, preparatory work before production, and preparing all raw materials required for the production of the claiming product. Step 2, primary side winding. Step 3, Secondary side winding. Step 4. Binding feet. Step 5, solder. Step 6. Visual inspection. Step 7. Magnetic core assembly. Step 8. Fix the magnetic core. Step 9. Check the electrical performance of the semi-finished product. Step 10. Dip in insulating varnish. Step 11, baking and drying. Step 12, finished product appearance inspection. Step 13, the pressure test of the finished product. Step 14. Inspection of the electrical properties of the finished product. Step 15, packing.

[0013] Further preferably, the winding of the primary side in the step 2: use enameled wire at 155°C to wind the wire buds of the primary side, and the wire buds are required to be woun...

Embodiment 2

[0015] The production process of the low-frequency common-mode inductor of the present invention includes the following steps, step 1, picking materials, preparatory work before production, and preparing all raw materials required for the production of the claiming product. Step 2, primary side winding. Step 3, Secondary side winding. Step 4. Binding feet. Step 5, solder. Step 6. Visual inspection. Step 7. Magnetic core assembly. Step 8. Fix the magnetic core. Step 9. Check the electrical performance of the semi-finished product. Step 10. Dip in insulating varnish. Step 11, baking and drying. Step 12, finished product appearance inspection. Step 13, the pressure test of the finished product. Step 14. Inspection of the electrical properties of the finished product. Step 15, packaging.

[0016] Further preferably, the winding of the primary side in the step 2: use enameled wire at 160°C to wind the wire buds of the primary side, and the wire buds are required to be wo...

Embodiment 3

[0018] The production process of the low-frequency common-mode inductor of the present invention includes the following steps, step 1, picking materials, preparatory work before production, and preparing all raw materials required for the production of the claiming product. Step 2, primary side winding. Step 3, Secondary side winding. Step 4. Binding feet. Step 5, solder. Step 6. Visual inspection. Step 7. Magnetic core assembly. Step 8. Fix the magnetic core. Step 9. Check the electrical performance of the semi-finished product. Step 10. Dip in insulating varnish. Step 11, baking and drying. Step 12, finished product appearance inspection. Step 13, the pressure test of the finished product. Step 14. Inspection of the electrical properties of the finished product. Step 15, packaging.

[0019]Further preferably, the winding of the primary side in the step 2: use enameled wire at 165°C to wind the wire buds of the primary side, and the wire buds are required to be wou...

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PUM

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Abstract

The invention belongs to the technical field of application of a low-frequency common mode choke and discloses a production process of the low-frequency common mode choke. The production process comprises the following steps: 1) material collection, preparation before production and preparation of all raw materials required for production of claimed products; 2) primary side winding; 3) secondaryside winding; 4) foot winding; 5) soldering; 6) appearance inspection; 7) magnetic core assembly; 8) magnetic core fixation; 9) electrical performance inspection of semi-finished products; 10) insulating varnish dipping; 11) baking and drying; 12) appearance inspection of finished products; 13) withstand voltage test of the finished products; 14) electrical performance inspection of the finished products; and 15) packaging. The beneficial effects are that the preparation process is reasonable in design; the prepared low-frequency common mode choke is excellent in quality and long in service life, and product production efficiency is high; and meanwhile, through the reasonably designed production process, product rejection rate is low, and raw material production cost is saved.

Description

technical field [0001] The invention belongs to the technical field of application of low-frequency common-mode inductors, and in particular relates to a production process of low-frequency common-mode inductors. Background technique [0002] Common mode Choke, also known as common mode choke, is often used in switching power supplies of computers to filter common mode electromagnetic interference signals. In the board design, the common mode inductor also plays the role of EMI filter, which is used to suppress the electromagnetic wave generated by the high-speed signal line from radiating outward. [0003] The filter circuit of the common mode inductor, La and Lb are the common mode inductor coils. These two coils are wound on the same iron core with the same number of turns and phases (wound in reverse), so that when the normal current in the circuit flows through the common mode inductor, the current reverses in the inductance coil wound in the same phase. At this time,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/00
CPCH01F41/00
Inventor 秦江勋吴小飞唐庆凤
Owner NANJING ANSEN ELECTRONICS CO LTD
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