Basic question about MOSFET operation in saturation

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analog_match

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mosfet operation

Friends,

There is one question about MOSFET operation in saturation that has always bothered me. In saturation the channel is pinched off, that means there is a reverse bias. Then how can we have a current? What is the mechanism by which we get current in saturation.

Thanks
 

operation of mosfet

This question has been discussed already in this forum.
Please look at
 

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