| 摘要 |
PURPOSE:To botain excellent performance, by improving the unevenness of mass balance and unequality of separation and electric field distribution, through the forming of other projections incorporatedly toward the opposite direction as the projection of the moving pole. CONSTITUTION:The opening 211 possible for free swinging of the cantilever 22 is formed at the cartridge console 21, and further, the moving pole 23 provides a pair of first projections 281 and 282 having a given opening by taking the lever 22 as the moving fulcrum B, and the second projections 291 and 292 are formed incorporatedly with the opposite direction as this. Further, in the console 21, the fixed poles 301, 311 and 302, 312 are placed by opposing surface to surface so that the projections 281 and 282 of the moving pole 23 are clipped respectively, and the projections 281 and 282 of the moving pole 23 and the fixed poles 301, 311 and 302, 312 constitute the variable capacitance capacitor. This capacitance change is fed to a part of the oscillation circuit and it is FM-modulated. Next, by detecting this, the stereo audio signal having uniform output balance can be obtained. |
