| 摘要 |
PURPOSE:To reduce thickness of internal diameter of secondary split winding bobbin by separating the primary coil from a secondary high voltage winding part and forming iron core with the ferrite core having resistivity of several MOMEGA-cm. CONSTITUTION:A thickness of internal diameter (t) of secondary split bobbin 2 is set to 3mm. or less from combination with an iron core 1. The primary coil 5 is wound separately so that it is not located near the internal diameter part of secondary high voltage winding of the bobbin 2. Moreover, a ferrite core having resistivity of several MOMEGA-cm is used as the iron core 1 which is internally in contact with the bobbin 2 and the iron core 1 is protected from terminating to the ground potential. Thereby, thickness t of bobbin 2 can be reduced and as a result coil can be reduced in size. Moreover, the bobbin is formed with uniform thickness and can be formed easily. |
