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開關電容 Switched capacitor)是一種實現濾波功能的電子器件,它的原理是在開關電路時,使電荷反覆移入移出電容器。通常,非重疊信號用於控制開關,因此並非所有開關同時閉合。使用這些元件實現的濾波器稱為「開關電容濾波器」,僅取決於電容之間的比率。這使得它們更適合在集成電路中使用,因為精確的電阻電容器並不經濟。[1]

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