High voltage transformer for controlling the leakage inductance

Abstract

A high voltage transformer controlling leakage inductance is used in a multi-lamp driving system, the transformer comprises: at least a line frame, a first winding, a second winding, a first magnetic unit and a second magnetic unit; wherein the line frame is provided with a receiving space for receiving the first magnetic unit, and provided with a first area and a second area on a surface, the first winding, the second winding are corresponding to the first area and the second area of the line frame respectively, the second magnetic unit covers the line frame side ends, and a trabecules beam extending from a proper position of a bottom of the second magnetic unit is provided between the first area and the second area; with the structure, the trabecules beam extending from the second magnetic unit is inserted into an inserting-detent portion, so that a low voltage magnetic passage generated by the first magnetic unit being effected by the first winding and the second winding respectively, and an alternating piezomagnetic passage are completely separated.

Description

technical field [0001] The invention relates to a high-voltage transformer with leakage inductance control, in particular to a high-voltage transformer which can control the switching loss of high and low voltage by changing the shape of the magnetic unit outside the wire frame to reduce the control leakage inductance of magnetic flux. Background technique [0002] Usually, light-weight LCD monitors (LCD MONITORs) and LCD TVs (TVs) are not only essential multimedia devices for individuals and families, but also widely used in the industry, such as important tools for various monitoring, operation, and even image advertising. The display method of liquid crystal display or LCD TV uses a multi-lamp drive system composed of cold-cathode tubes and transformers as the drive as the backlight. Therefore, the tolerance and stability of the transformer become important indicators that affect the product qualification rate . [0003] Currently commonly used transformers, as shown in ...

AI Technical Summary

Problems solved by technology

[0005] 1. The magnetic flux of commonly used transformers is too high, and it is impossible to control the switching loss caused by mutual interference between high and low voltage. The switching loss of high and low voltage will make the efficiency of the magnetic unit low, causing the transformer to overheat and become hot. In order to take heat dissipation into account, The size of the transformer is also increasing, taking up a lot of space

[0006] 2. The magnetic unit of the commonly used transformer cannot control the leakage inductance, which does not meet the needs of today's LCD monitors or LCD TVs

[0007] 3. Especially for liquid crystal displays or LCD TVs, the number of lamp tubes is constantly increasing in order to achieve better visual effects, and the number of lamp tubes is increasing all the time, so that the known transformer cannot simultaneously drive multiple lamp tubes by a high-voltage transformer load

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