用12v做电源3v的二极管用多大的电阻大概需要一百多个,我想让LED灯出现满天星的渐明渐暗的效果请问大侠们怎么弄呢?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 06:14:39
![用12v做电源3v的二极管用多大的电阻大概需要一百多个,我想让LED灯出现满天星的渐明渐暗的效果请问大侠们怎么弄呢?](/uploads/image/z/2798452-28-2.jpg?t=%E7%94%A812v%E5%81%9A%E7%94%B5%E6%BA%903v%E7%9A%84%E4%BA%8C%E6%9E%81%E7%AE%A1%E7%94%A8%E5%A4%9A%E5%A4%A7%E7%9A%84%E7%94%B5%E9%98%BB%E5%A4%A7%E6%A6%82%E9%9C%80%E8%A6%81%E4%B8%80%E7%99%BE%E5%A4%9A%E4%B8%AA%2C%E6%88%91%E6%83%B3%E8%AE%A9LED%E7%81%AF%E5%87%BA%E7%8E%B0%E6%BB%A1%E5%A4%A9%E6%98%9F%E7%9A%84%E6%B8%90%E6%98%8E%E6%B8%90%E6%9A%97%E7%9A%84%E6%95%88%E6%9E%9C%E8%AF%B7%E9%97%AE%E5%A4%A7%E4%BE%A0%E4%BB%AC%E6%80%8E%E4%B9%88%E5%BC%84%E5%91%A2%3F)
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