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Analog electronics circuits miscellaneous

Analog Electronic Circuits

  1. Find Av =
    v0
    vi


    1. 5
    2. – 5
    3. 6
    4. – 6
Correct Option: A

VA = Vi (due to virtual ground) KCL at node A.

VA – VB
+
VA – 0
= 0
RR

or 2 VA = VB
KCL at node B.
VB – VA
+
VB
+
VB – V0
= 0
RRR

or
2VA – VA
+
2VA
+
2VA – V0
= 0 (VB = 2 VA)
RRR

or
Vi
+
2Vi
+
2Vi
=
V0
(Vi = VA)
RRRR

or 5 Vi = V0
or
V0
= 5
Vi



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