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由于活动接触部件的接触不良给高频电路产生的危害很大。附图是高频电路中用以控制振荡频率变化的可变电容器安装情况,其中图(a)是常用的方法,可变电容器的轴可用金属制的接轴将它延长到面板外面,但在旋转时常因接轴和面板的接触不良,使振荡器受到干扰而导致振荡频率的变化、图(b)是改善后的可变电容器的安装法,它将接轴改成绝缘的,而延长轴仍用金属制的,在面板的里侧用弹簧片制成的接触片使两者充分接触,再将接触片涂上
Due to poor contact with moving parts of the high-frequency circuits harmful to the great. The figure is a variable capacitor mounting in a high frequency circuit for controlling the variation of the oscillation frequency, of which Fig. (A) is a common method, the shaft of a variable capacitor can be extended out of the panel with a metallic spigot but with Rotation is often due to poor connection between the shaft and the panel, the oscillator is subject to interference caused by changes in the oscillation frequency, Figure (b) is an improved variable capacitor installation method, which will change the shaft insulation, while the extension shaft Still made of metal, the panel in the back side of the spring made of contact with both make full contact, and then coated with contact