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还是上次lm224运放的问题

Other Parts Discussed in Thread: TLC084, LM224

我想测得交流50HZ信号在过零点的准确波形,(它整个设计的关键部分)所以我把信号放大了200倍,实际测得方波中转折点并未对应交流信号的+60mv与-60mv(理论)能改进一下电路或者使用其它芯片来得到交流50HZ信号在过零点的准确波形吗?