508 运算放大器的两大基本功能，实现其它功能就需要外围元件配合
Synopsis
运算放大器的两大基本功能：１、运放有很大的放大倍数，通常达万倍以一，经常在5到10万倍。2、运放是一种对比放大器，是对两 ...
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