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SN74AHCU04: 反相器自振荡

Part Number: SN74AHCU04
Other Parts Discussed in Thread: SN74AHC04, SN74HC04

采用皮尔斯振荡电路,想要正弦自振荡。用sn74ahcu04,sn74ahc04,sn74hc04搭建振荡电路仿真,无法振荡,用两个MOS管就可以输入输出正弦自振荡。sn74ahcu04怎么才能工作在放大区,实现正弦振荡。在sn74ahcu04输入端输入正弦波,输出是方波,无法实现输出正弦自振荡,