What is the difference between the triode ( ohmic ) region and the saturation ( linear ) region in mosfet ?? It's confusing since both regions are linear but why does mosfet work as an amplifier in saturation not in triode ? Isn't triode equal to the active linear region in Bjt ? If it is not then what is the triode region and what is it used for ??
The MOSFET triode region: -
Is equivalent to the BJT saturation region: -
The BJT active region is equivalent to the MOSFET saturation region.
For both devices, normal amplifier operation is the right hand side of each graph. In switching applications, both devices are "on" in the left hand half of the graph.