| 摘要 |
A transformer as well as a switching power supply and a LED fluorescent lamp applying the same. The transformer comprises: a framework (1), a magnetic core (2) and a winding (3). A reel (10) of the framework (1) is in a hollow column structure with openings at two ends. Lateral walls of the framework extend vertically at the openings at two ends to form an annular slot structure (11). The winding (3) is wound around the annular slot structure (11). The magnetic core is in a structure as Chinese character Ri openings at two ends which covers the reel (10) and the winding (3) from the circumference. The middle part of the magnetic core (2) is inserted into the reel (10). The transformer as well as the switching power supply and the LED fluorescent lamp applying the same has better electromagnetic compatibility, reducing EMI to other devices and power grids. |
