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三极管是如何实现小电流控制大电流呢? 知道了原子的掺杂你就知道为什么三极管能小电流控制大电流了。 视频中省略了PN结内建电场的影响,这样有利于大家更轻松理解三极管。
How does a triode control a large current with a small current? Now that you know the doping of atoms you can see why the transistor can control a large current with a small current. The video omits the influence of the electric field built into the PN junction, so that everyone can understand the transistor more easily.