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Exam Questions Papers - Engineering

Q1:

The cut off voltage for JFET is 5 V. The pinch off voltage is __________ .

A (5.0)l/2 V

B 2.5 V

C
V

D 5 V

ANS:D - 5 V

For JFET ID = IDSS (1 - VGS/Vp)2 0 = (1 - VGS/Vp)2 ∴ VGS = VP ∴ Vp = 5 V.