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設計一個高效率音頻功率放大器的詳細資料說明

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上傳日期: 2019-08-30

上 傳 者: 易水寒他上傳的所有資料

資料介紹

  本設計主要由功率放大器、信號變換電路、輸出功率顯示電路和保護電路組成。功率放大器部分采用D類功率放大器確保高效率, 在5V供電情況下輸出功率大于1W, 且輸出波形無明顯失真, 低頻輸出噪聲電壓很低輸出頻率為20KH2以下時, 低頻噪聲電壓約1mV信號變換部分采用差分放大電路,將雙端輸出信號變為1:1的單端輸出信號輸出功率顯示部分用乘法器電路及帶AD轉換的電壓表頭顯示功率值, 電路簡單合理保護電路部分采用電流互感器監控, 實現輸出短路保護。

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