使用NE5532做两级放大。附件中有电路图。发现当信号频率增加到35KHz左右时,两级放大电路的输出信号不是正弦波,出现三角波。NE5532的压摆率有9v/us,不应该在这么低的频率下就出现失真。请问这是怎么回事?
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