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Analog electronics circuits miscellaneous

Analog Electronic Circuits

  1. The parameter of the transistor in fig given below VTN = 1.2 V, Kn = 0.5 mA/V2. The voltage VDS is:


    1. 2.83 V
    2. 6.52 V
    3. 3.48 V
    4. 4.98 V 50 µA 5 V 5 V
Correct Option: B

Given that VTN = 1.2 V
Kn = 0.5 mA/V2
ID = Kn (VS – VTN)2
50 × 10– 6 = 0.5 × 10– 3 (VGS – 1.2)2
VGS = √.1 + 1.2 = 1.516 V
VG = 0
so VGS = VG – VS
or VS = VG – VGS = 0 – 1.516
= – 1.516 V
VDS = VD – VS = 5 – (– 1.516)
= 6.516 V



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