lm317把12v变为5v,那二个电阻怎么算的,怎么选的.Vout=1.25*(1+R2/R1) 这个貌似和输入电压没一点关系啊那是不是输出只和二个电阻有关,怎么选都行?什么电源都能转换?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 00:51:06
![lm317把12v变为5v,那二个电阻怎么算的,怎么选的.Vout=1.25*(1+R2/R1) 这个貌似和输入电压没一点关系啊那是不是输出只和二个电阻有关,怎么选都行?什么电源都能转换?](/uploads/image/z/4604653-37-3.jpg?t=lm317%E6%8A%8A12v%E5%8F%98%E4%B8%BA5v%2C%E9%82%A3%E4%BA%8C%E4%B8%AA%E7%94%B5%E9%98%BB%E6%80%8E%E4%B9%88%E7%AE%97%E7%9A%84%2C%E6%80%8E%E4%B9%88%E9%80%89%E7%9A%84.Vout%3D1.25%2A%281%2BR2%2FR1%29+%E8%BF%99%E4%B8%AA%E8%B2%8C%E4%BC%BC%E5%92%8C%E8%BE%93%E5%85%A5%E7%94%B5%E5%8E%8B%E6%B2%A1%E4%B8%80%E7%82%B9%E5%85%B3%E7%B3%BB%E5%95%8A%E9%82%A3%E6%98%AF%E4%B8%8D%E6%98%AF%E8%BE%93%E5%87%BA%E5%8F%AA%E5%92%8C%E4%BA%8C%E4%B8%AA%E7%94%B5%E9%98%BB%E6%9C%89%E5%85%B3%2C%E6%80%8E%E4%B9%88%E9%80%89%E9%83%BD%E8%A1%8C%3F%E4%BB%80%E4%B9%88%E7%94%B5%E6%BA%90%E9%83%BD%E8%83%BD%E8%BD%AC%E6%8D%A2%3F)
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