Fly-back power supply for LED lamp

Abstract

The invention relates to a fly-back power supply for an LED lamp. The fly-back power supply for an LED lamp includes at least two transformers, one switch and loads, wherein each transformer includes one primary side and one secondary side; the primary side includes a positive input end and a negative input end; the secondary side includes a positive output end and a negative output end; the positive input end of the primary side of one transformer among the at least two transformers is connected with the positive input end of the other primary side; the negative output end of the primary side of one transformer among the at least two transformers is connected with the negative output end of the other primary side; and the positive output end of the secondary side of the transformer is connected with the load, and the negative output end of the secondary side of the transformer is successively in positive and negative connection with the positive and negative output ends of the secondary side of the other transformer. The fly-back power supply for an LED lamp uses at least two first and second transformers to replace one independent single transformer, and can reduce the size in one direction, so that the size, of the whole product, in one direction can be reduced while existing magnetic core and skeleton are used, and then the mounting requirement for a user can be satisfied and the user experience effect can be improved.

Description

technical field [0001] The invention relates to the field of an applied power supply for lamp lighting, in particular to a flyback power supply for LED lamps. Background technique [0002] In general daily life, various lighting devices can be seen everywhere, for example, fluorescent lamps, street lamps, table lamps, art lamps and the like. Among the above-mentioned lighting devices, traditionally, most of them use tungsten filament bulbs as light sources. In recent years, due to the rapid development of technology, light emitting diodes (LEDs) have been used as light sources. What's more, in addition to lighting equipment, for general traffic signs, billboards, car lights, etc., light-emitting diodes are also used as light sources instead. Using light-emitting diodes as a light source has the advantages of saving power and greater brightness, so it has gradually become popular in use. [0003] However, as a DC power loss component, LED lamps usually need to convert the ...

AI Technical Summary

Problems solved by technology

Then, in the actual use process, due to the size of the transformer, that is, the limitation of length, width and height, the size of the entire flyback power supply in a certain direction is very large, making it difficult to install it in a specific installation environment. Experience a negative impact

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