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电子工程专辑
11月
实例讲解:LED恒流电路的电路原理
这是一个LED恒流电路板: 电路板上有烧毁的痕迹,最后再说烧毁的原因,现在咱们先不管。 复原其电路原理图: 既然说是LED的恒流电路,它是怎样实现恒流的呢? 为了直观地演示它的“恒流”效果,请看以下的仿真动图。 当用24V供电时: 流过LED的电流为: 当 ...
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