http://image.baidu.com/i?ct=503316480&z=0&tn=baiduimagedetail&word=%BF%EC%BB%D6%B8%B4%B6%FE%BC%AB%B9%DC&in=5105&cl=2&cm=1&sc=0&lm=-1&pn=69&rn=1&di=42543976&ln=700
续流二极管。
