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場效電晶體放大器(英語:FET amplifier)是一種使用場效電晶體field-effect transistor (FET))的放大器。在放大器應用中,場效電晶體的主要優點是它能提供非常高的輸入阻抗以及低輸出阻抗

場效電晶體放大器示意圖

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