Why does the current stop at pinch voltage in a JFET?

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SUMMARY

The discussion centers on the behavior of Junction Field Effect Transistors (JFETs) concerning pinch voltage. As the voltage increases, the current initially rises until reaching pinch voltage, where the depletion region becomes fully formed, leading to saturation. Contrary to expectations, the current does not decrease beyond this point, indicating a stable state. The referenced resource clarifies that at pinch voltage, the JFET operates in a region where the current remains constant despite further increases in voltage.

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nhrock3
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i thought that as we increase the voltage the gap becomes smaller
and in pinch voltage we have an open circuit

but the grath says otherwise
that as we increase the voltage the current increases and in the pinch voltage (when there is no way for the electrons to move and we have a total deplition region on one side)
we have a saturation
and there is no decrease in current no where
why?
 
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http://www.learnabout-electronics.org/fet_03.php
when i increase the Vdc the current stop
no matter what in the Vgs
 
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