Communication transformer and manufacturing method thereof

A manufacturing method and transformer technology, applied in the manufacture of inductors/transformers/magnets, chemical instruments and methods, transformer/inductor cores, etc., can solve problems such as poor economy, easy oxidation of the surface, short service life, etc., and achieve improved use The effect of improving life and corrosion resistance

A manufacturing method and transformer technology, applied in the manufacture of inductors/transformers/magnets, chemical instruments and methods, transformer/inductor cores, etc., can solve problems such as poor economy, easy oxidation of the surface, short service life, etc., and achieve improved use The effect of improving life and corrosion resistance

CN109494065BActive Publication Date: 2020-11-06东莞市航其电子元件有限公司
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  • Communication transformer and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 A communication transformer shown includes a skeleton, a winding 4, a magnetic core 3, a shielding cover 1 and packaging materials, wherein the skeleton is an alumina-based porous foam ceramic skeleton 2 with a porosity of 20%-30%; 1140 copper wire of epoxy polyester insulating varnish; the magnetic core 3 is a sun-shaped molybdenum permal magnetic core 3; the gap between the shielding cover 1 and other parts is filled with self-circulation insulation heat transfer filler 5, and the self-circulation insulation conduction The thermal filler 5 is a mixture of alumina-based porous foam ceramics and gum rosin; the shielding cover 1 is made of surface-activated and passivated titanium-containing low-carbon steel, and is packaged in a fully enclosed structure.

[0040] The manufacturing method of the communication transformer comprises the following steps:

[0041] 1) Selection and preparation of various components

[0042] ① The skeleton is selected from t...

Embodiment 2

[0067] The whole is consistent with Example 1, the difference is:

[0068] The manufacturing method of the communication transformer comprises the following steps:

[0069] 3) Manufacturing method of self-circulating insulating heat transfer filler 5

[0070] ① Mix aluminum chloride hexahydrate with an appropriate amount of pure water, stir and filter impurities, and prepare to obtain an aluminum chloride solution with a mass percentage of 58%;

[0071] ③ After step ② is completed, continue to vibrate at high frequency for 30 minutes, then place the solution to be treated in step ② in a constant temperature environment of 25 ° C, and mechanically stir for 30 minutes to obtain a prefabricated solution;

[0072] ④ Slowly add dilute hydrochloric acid solution dropwise to the prefabricated solution obtained in step ③ and stir until the pH value of the solution is 5.2, and leave to obtain the original sol solution;

[0073] ⑤ Place the original sol solution obtained in step ④ at ...

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Abstract

The invention discloses a high-stability corrosion-resistant long-life communication transformer and a manufacturing method thereof. The communication transformer comprises a framework, a winding, a magnetic core, a shielding cover and a packing material, and is characterized in that the framework is an alumina-based porous foam ceramic framework with a porosity of 20-30%; the winding adopts a purple copper wire with epoxy polyester insulating paint; the magnetic core is a molybdenum pomo magnetic core which is shaped like a Chinese character 'ri'; a self-circulation insulating heat transfer filler is filled in gaps between the shielding cover and other parts, and the self-circulation insulating heat transfer filler is a mixture of alumina-based porous foam ceramic and rosin; the shieldingcover is made of titanium-containing low-carbon steel with activated and passivated surface and is packaged in a totally-enclosed structure. The communication transformer has the advantages of smallloss, high conversion efficiency, good electromagnetic shielding property, good insulation property, corrosion resistance, oxidation resistance and long service life.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a communication transformer and a manufacturing method thereof. Background technique [0002] Communication transformers are transformers used to adjust the quality and status of communication circuits in telephone terminal circuits and trunk product lines, that is, they are often used for weak current transformation, and have high requirements for shielding performance and stability. [0003] When conventional communication transformers are used in communication lines, such as telephone lines, capacitor elements for isolating DC must be added. If a DC current passes through the coil of the transformer, it will cause magnetic saturation, which will cause it to lose its original technical indicators. At the same time, the winding of the transformer The DC impedance is also very low, which in turn affects the state of the communication line. In the prior art, in order to solve...

Claims

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Application Information

Patent Timeline
06 Nov 2020
Publication
CN109494065B
IPC
H01F41/00; H01F27/24; H01F27/26; H01F27/28; H01F27/30; H01F27/02; H01F27/23; C09K5/14
CPC
C09K5/14; H01F27/022; H01F27/23; H01F27/24; H01F27/266; H01F27/2823; H01F27/306; H01F41/00
Inventors
郭思源; 孙静