MOS晶体管没有导电沟道为什么还会有电流As the value of the drain-source voltage is further increased,the assumption that the channel voltage is larger than the threshold all along the channel ceases to hold.This happens when VGS - V(x)
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MOS晶体管没有导电沟道为什么还会有电流As the value of the drain-source voltage is further increased,the assumption that the channel voltage is larger than the threshold all along the channel ceases to hold.This happens when VGS - V(x)
MOS晶体管没有导电沟道为什么还会有电流
As the value of the drain-source voltage is further increased,the assumption that the channel voltage is larger than the threshold all along the channel ceases to hold.This happens when VGS - V(x) < VT.At that point,the induced charge is zero,and the conducting channel disappears or is pinched off.No channel exists in the vicinity of the drain region and the current ID remains constant (or saturates).Please explain why the current can keep constant instead of being zero while the conducting channel has already disappeared?
MOS晶体管没有导电沟道为什么还会有电流As the value of the drain-source voltage is further increased,the assumption that the channel voltage is larger than the threshold all along the channel ceases to hold.This happens when VGS - V(x)
漏源电压的增大有两个影响,一个是使漏源间电流增大,另一个是使导电沟道沿漏源方向逐渐消失.这两种作用相互抵消,电流既不增大也不减小.当漏源电压大到一定程度,导电沟到会完全消失,但电流是有的,仍然是刚发生夹断时的电流,理由见上述