Hi, I don't understand pinch-off in MOSFETS. I have two big issues: 1. VDS is pointing from drain to source, so the voltage works in the horizontal plane.VGS on the other hand,is in the vertical plane. So how they can cooperate? How does increasing VDS till VGS - VTh get you in pinch-off. Why does increasing VDS above VGS - VTh result in the moving of the pinch-off point to the left? In what sense are VGS and VDS interacting with each other, I don't see it. 2. I don't get how electrons are swept from the shortened channel bye the electric field of the depletion regio towards the drain. With all the voltages from Gate and Drain and built in voltages of depletion regio, I don't know where the electric field is pointing at. Here's a sketch, a messed up sketch from me in Paint: Hope some people can explain it to me. Thanks in advance.