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21 天
既然MOSFET栅-源阻抗非常大,为什么设计驱动MOS电路的栅极电流还要大 ...
三极管是流控型器件,通过电流控制三极管的工作区,而MOSFET与之相对是压控型器件,栅-源阻抗非常大,我们一般认为MOSFET栅-源工作电流可以忽略,那既然MOSFET是压控型器件,为什么设计MOFET驱动电路时,栅极驱动电流要大呢? 要想回答上面的问题,就不得不 ...
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