题目内容

The description ( ) is not right for the concepts of junction field effect transistor. A.the

A. junction field effect transistor passes through
B. semiconductor region called
C. channel with ohmic contacts at both ends B.the channel current is affected by the channel conductance modulation effect C.the phenomenon of modulating the conductance of
D. semiconductor by an electric field applied perpendicular to the surface of

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The threshold voltage for the n-channel enhancement mode MESFET is( ), the threshold voltage for the n-channel depletion mode MESFET is( ).( )

A. positive, positive
B. negative, negative
C. positive, negative
D. negative, positive

Which one is not Junction Field-Effect Transistor.( )

A. pn JFET
B. MESFET
C. HEMT
D. bipolar transitor

The internal pinch-off voltage Vp0 is the gate-to-source voltage to achieve pinch-off.( )

The ideal saturation drain current is independent of the drain-to-source voltage.( )