Transformer as well as switch power supply and LED fluorescent lamp applying same

A technology of LED fluorescent lamp and switching power supply, applied in the direction of transformer/inductor core, transformer/inductor parts, transformer/inductor coil/winding/connection, etc. requirements and other issues, to achieve good electromagnetic compatibility and solve the effect of electromagnetic interference problems

Inactive Publication Date: 2010-09-29
SHINRY TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventor finds in the process of implementing the present invention that the existing various electronic devices with transformers, due to limitations in volume, power, etc., the EMC of the transformers often cannot reach the required standard, and it is difficult for other equipment, power grids, etc. Cause large EMI interference

Method used

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  • Transformer as well as switch power supply and LED fluorescent lamp applying same
  • Transformer as well as switch power supply and LED fluorescent lamp applying same
  • Transformer as well as switch power supply and LED fluorescent lamp applying same

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Embodiment Construction

[0030] The technical problem solved by the present invention is to provide a transformer, a switching power supply and an LED fluorescent lamp using the transformer. The transformer can provide the maximum power with the smallest volume and has better electromagnetic compatibility. Circuits and equipment greatly reduce EMI interference to other equipment and power grids.

[0031] see figure 1 , is a schematic diagram of the traditional transformer structure, figure 1 a is the assembly diagram, figure 1 b is an exploded view, as shown in the figure, in a traditional transformer, most of the windings are exposed, and the electromagnetic waves radiate outward without shielding when the transformer is working, which is an important factor for EMI interference. At the same time, we can see that in traditional transformers, the cross-sectional area of ​​the magnetic core part that is actually wound by the winding is small, which limits the power of the transformer to not be very h...

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Abstract

The invention provides a transformer as well as a switch power supply and an LED fluorescent lamp applying the same. The transformer comprises a framework 1, a magnetic core 2 and a winding 3, wherein a spinal column 10 of the framework 1 is in a hollow column structure with openings at two ends, the side wall of the framework vertically extends at the openings at two ends to form a circular groove body structure 11; the winding 3 is wound in the circular groove body structure 11; the magnetic core 2 is in a Chinese character Ri shaped box body structure with openings at two ends, the periphery of the magnetic core 2 covers the spine column 10 and the winding 3 from the circumference, and the middle of the magnetic core 2 is partially sleeved in the hollow spine column 10. The transformer as well as the switch power supply and the LED fluorescent lamp applying the same have better electromagnetic compatibility, thereby greatly reducing EMI (Electro-Magnetic Interference) caused to other equipment and power grids.

Description

technical field [0001] The invention relates to the field of electronic applications, in particular to a transformer, a switching power supply and an LED fluorescent lamp using the transformer. Background technique [0002] Electromagnetic Interference (EMI) is electronic noise that interferes with electrical signals and reduces signal integrity. EMI is usually generated by electromagnetic radiation sources such as motors and transformers. Since the emergence of electronic system noise reduction technology in the mid-1970s, mainly due to the US Federal Communications Commission in 1990 and the European Union in 1992, the relevant regulations on electronic products were proposed, requiring companies to ensure that their products comply with strict magnetic susceptibility and emission guidelines . Products that comply with these regulations are called EMC (Electromagnetic Compatibility). [0003] EMI has two types of conducted interference and radiated interference. Conduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/30H01F27/24H01F27/26H01F27/29
CPCH01F27/306H01F27/325
Inventor 赵德琦李英
Owner SHINRY TECH
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