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二极管作为一种半导体元件,在电学问题中涉及相对较少,所以师生普遍不够重视,对其理解层次不高,一旦出现二极管问题往往会感觉到措手不及,高中阶段涉及到的二极管一般均视为理想二极管,即正向电阻为零,负向电阻为无穷大。理想二极管具有单向导通性,相当于一个“断开”和“闭合”两种状态不断切换的开关,利用二极管我们可以对交变电流进行整流,在高中阶段,整流是二极
Diode as a semiconductor device, involving relatively few electrical problems, so teachers and students generally pay less attention to its level of understanding is not high, once the diode problems often feel caught off guard, high school phase of the diode are generally considered as The ideal diode, the forward resistance is zero, the negative resistance is infinite. Ideal diode with unidirectional continuity, equivalent to a “off ” and “closed ” two state switching constantly, the use of diodes we can change the alternating current, high school, the rectifier is the diode