| 摘要 |
PURPOSE: A ferrite core structure for fly back transformer is provided, in which heat radiation holes are formed at ends of a pair of ferrite cores, to thereby achieve an improved radiation efficiency and reliability for electrical circuit. CONSTITUTION: A pair of ferrite cores(23,23') is installed at an inner surface of a low voltage bobbin, and heat radiation holes(23b,23b') penetrate through ends of ferrite cores. A core band is inserted into a core band coupling groove(23a) formed at the outer periphery of each ferrite core so as to thereby support and fix ferrite cores. Heat radiation holes are formed into T-shape, and have outer diameters larger at the upper ends of ferrite cores facing each other. By installing an end of the ferrite core into the low voltage bobbin, radiation is performed within the fly back transformer case due to the convection of ferrite cores.
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