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What will be the value of trans conductance if two Identical FETs are connected in parallel?(a) Doubles(b) Reduces to half(c) 0(d) InfiniteI got this question in class test.Origin of the question is The JFET Volt-Ampere Characteristics in portion Field-Effect Transistors of Electronic Devices & Circuits |
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Answer» RIGHT choice is (a) Doubles Easy explanation: GM’=IDS/Vgs at VDS=0V, if two FET are IDENTICAL then, gm1=gm2=gm But gm’=gm1+gm2 Therefore gm’=gm+gm=2gm. |
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