输入参数
电源电压；LED前向电压；LED额定电流文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
输出参数文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
串联电阻；下一个5%标准系列电阻值；色环电阻颜色；LED功耗；电阻功耗文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
输入数据：文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
电源电压=12V，LED前向电压=3V，LED额定电流=20mA时文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
输出结果：文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
串联电阻值=450欧；下一个5%标准系列电阻值=470欧；色环电阻颜色为：黄 紫 棕 金5%；LED功耗=57mW；电阻功耗=172mW文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
注意事项文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
电源电压: 设置范围为3V 到12V文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
LED前向电压: 输入范围为2V 到 4V文章源自公式库网-https://www.gongshiku.com/html/201910/leddianlugonghaozaixianjisuanjichuanliandianzuzaixianjisuanyijianshengchengjisuanqi.html
LED额定电流: 输入范围为 10mA 到 50mA
