Voltage transformer capable of adjusting leakage inductance and Electric lamp drive apparatus using same

Abstract

A transformer whose drain inductance can be adjustable includes the first bobbin, the first winding and the second winding. Thereinto, the first bobbin includes the first coiling part and the second coiling part. The first winding enwinds the first coiling part of the first bobbin. The second winding includes the first coiling and the second coiling section; the first coiling section enwinds the first coiling part of the first bobbin, and enwinds the first winding in different layer, the second coiling section enwinds the second coiling part of the first bobbin. The transformer whose drain inductance can be adjustable in the invention possesses up and down type coiling structure and left and right type coiling structure to make the drain inductance can be adjustable according to the requirement, it possesses higher flexibility.

Description

【Technical field】 [0001] The invention relates to a transformer, in particular to a transformer with adjustable leakage inductance. 【Background technique】 [0002] Generally, a transformer is applied to an electronic device to convert a received voltage into a voltage required by the electronic device. However, all transformers have leakage inductance, that is, the inductance generated when the magnetic flux generated by the primary winding is not fully coupled to the secondary winding. Therefore, when using a transformer, on the one hand, it is necessary to use various methods to reduce the leakage inductance, so as to reduce the loss of electric energy and improve the conversion efficiency of the transformer; The leakage inductance value must meet the required standard in order to produce good resonance. [0003] figure 1 It is a sectional view of the winding structure of the existing transformer 100 . The transformer 100 includes a bobbin 10 , a first winding 11 , a s...

AI Technical Summary

Problems solved by technology

This winding structure makes the distance between the first winding 21 and the second winding 22 far away, and they cannot be fully coupled in the flux linkage, resulting in a relatively large leakage inductance in the transformer 200

[0005] It can be seen from this that the leakage inductance of the upper and lower winding structures of the existing transformers is low and cannot produce good resonance; the leakage inductance of the left and right winding structures is relatively large, although the resonance requirements can be met, but the large leakage inductance will consume power and reduce the transformer conversion efficiency

In addition, the leakage inductance of the two types of winding structures is fixed and cannot be adjusted. To change the leakage inductance of the transformer, it is necessary to change the winding structure

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