vaidhyanathan
Junior Member level 1
I read that in an n-mosfet, when drain voltage is increased above threshold (in saturation mode) the inversion channel between the source and drain is pinched-off near the drain region. so the channel length decreases and so its resistance. so larger current flows through the channel.
My doubt is, when a smaller portion is pinched off near the drain, why it is not considered as open? the substrate will be of p-type. so there is no way of electrons flowing from the source to drain na?(due to the region that is cut off between them)
My doubt is, when a smaller portion is pinched off near the drain, why it is not considered as open? the substrate will be of p-type. so there is no way of electrons flowing from the source to drain na?(due to the region that is cut off between them)