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A p-channelGe JFET has max-half channel width 5µm and channel conductivity of 2/Ωcm, if Er = 2000cm^2/Vsec, What is the value of pinch off voltage?(a) 8.21V(b) 82.1V(c) 88.21V(d) 5.2VI had been asked this question in a national level competition.The question is from The Pinch off Voltage Vp in division Field-Effect Transistors of Electronic Devices & Circuits |
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Answer» RIGHT ANSWER is (C) 88.21V Best EXPLANATION: Vp=qNA a^2/2E = (5×10^-4) (5×10^-4)×2/(2×16×8.854×2000×10^-14) = 88.21V. |
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