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TINA/Spice: 关于TINA仿真的一些问题

Other Parts Discussed in Thread: TINA-TI

Tool/software: TINA-TI or Spice Models

tina仿真.docx

1.仿真一个LC低通滤波器。输入激励幅度为3V,频率1MHzduty cycle40%的。理论上输出应该是Vout=3*40%=1.2V
 
利用Tina软件做仿真。电路搭建如下:
问题:
1.电路搭好后,做ERC仿真,为什么会出现以下两个warning
2.仿真看哪个节点的电压波形,就得在哪个节点上放置一个voltge meter?例如此处的VM1VM2
 
3.仿真结果,感觉也不对?为什么输出是是正弦波