Unregulated power supplies contain three basic components: a transformer, retifier and filter capacitor. This type of power supply, because of its simplicity, is the least costly. The disadvantage is that the output voltage is not constant.
【简答题】We can offer you a place at one of the best universities in Britain. We’ll provide you with a choice of 150 first-class courses developed especially to enable you to study in your own time. All of the...
【简答题】We can offer you a place at one of the best universities in Britain. We’ll provide you with a choice of 150 first class courses developed especially to enable you to study in your own time, backed by ...