Transformer structure with leakage inductance

Abstract

The invention relates to a transformer structure with leakage inductance, comprising: a winding base, comprising a primary winding part, a first secondary winding part, a second secondary winding part and a penetrating passage, wherein the bottom surface of the winding base is provided with a first through hole, and the first through hole is communicated with the penetrating passage; a primary winding wire wound on the primary winding part; a first secondary winding wire and a second secondary winding wire respectively wound on the first secondary winding part and the second secondary windingpart; and a magnetic core group at least partially arranged in the penetrating passage of the winding base at least and comprising a first magnetic core part and a second magnetic core part, wherein the second magnetic core part is provided with a first extending column, the first extending column is installed in the first through hole of the winding base. The invention can increase or adjust theleakage inductance and is suitable for various resonant circuits while the leakage inductance can be increased and adjusted; moreover, the electromagnetic interference or impact to the adjacent electron component and circuit on the circuit board cannot be generated relatively.

Description

technical field [0001] The invention relates to a transformer structure, in particular to a transformer structure with leakage inductance. Background technique [0002] Transformers are electronic components often used in various electrical equipment to adjust different voltages to the applicable range of electrical appliances. see figure 1 , which is a schematic structural diagram of a traditional transformer. Such as figure 1 As shown, the transformer 1 mainly includes a magnetic core assembly 11 , a bobbin base 12 , a primary winding coil 13 and a secondary winding coil 14 . Wherein, the primary winding 13 and the secondary winding 14 are overlapped and wound in the winding portion 121 of the winding base 12 , and are insulated and separated by, for example, an insulating tape 15 (isolation tape). The magnetic core group 11 is generally composed of a first magnetic core part 111 and a second magnetic core part 112, and the partial structure of the magnetic core group ...

AI Technical Summary

Problems solved by technology

[0007] However, in the existing transformer 2, since the primary winding 24 and the secondary winding 25 use the main magnetic circuit to generate induction and then change the voltage, there is no bypass magnetic flux, and the coupling effect is better, so the leakage inductance formed is relatively small. Low and cannot be adjusted, so it cannot meet the requirements of some resonant circuits

In addition, due to the electromagnetic effect of the transformer 2, it is easy to generate electromagnetic interference or influence on the adjacent electronic components or circuits on the circuit board, thereby affecting the electrical performance of the power supply system.

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