| 摘要 |
PURPOSE:To facilitate the continuous variation of a true inductance of a slide control type variable inductor by winding a coil on a ring-shaped core provided with a gap and enabling to arbitrarily select the leading terminal of the coil in accordance with the slide position of a brush contact. CONSTITUTION:A suitable gap 3 is formed at a ring-shaped core 1, a coil 2 is wound along the core 1, the leading terminal from the coil is arbitrarily selected by the slide position of a brush 4, and the inductance between one end A or B of the coil and the terminal C and be continuously varied. |
