• 2021-04-14
    电路如图所示,二极管采用硅管,电阻R=1kΩ,E=3V,硅管的正向导通电压可取0.7V,用恒压降模型求UR的值等于( )Vhttp://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/d8cb0c017ec04941ac1373b28131bf74.png