| 摘要 |
PURPOSE:To require no shielding plate and to reduce longitudinal current by winding the third winding adjacent to a balancing winding and by connecting one end of the third winding to one end of a unbalancing winding in a transformer wherein the balancing and unbalancing windings are provided on a magnetic core and a balance-unbalance conversion is performed. CONSTITUTION:The balancing winding 1 that is the primary winding and the unbalancing winding 2 that is the secondary winding are wound around the magnetic core 3, a balancing signal is applied to the terminals T1 and T2 of the winding 1, the terminal T4 of the winding 2 is grounded and an unbalance signal is produced across the terminals T3 and T4. In this configuration, the third winding 6 is newly wound on the windings 1, 2 that are wound and laminated on the core 3, its one side terminal T5 is opened, and the other T6 is connected to the terminal T4 of the winding 2. Because the winding 1 is interposed between the windings 2, 6, the impedance balance between the terminals T1, T2 and the earth can be improved, and the longitudinal current can remarkably be reduced. |
