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by D.Yu
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on Di 12 Mai 2015
Author: d-yu
ADC protection circuit design
5/12/2015 8:56:36 PM
方案全部错误，因为输入大电压时，运放无法正常工作！
There was a time when I thought zener diodes were great. Now I know that they're not. As a matter of fact they stink. This diode has a 4% tolerance at 250 µA ...