Explanation : Using the superposition theorem the voltage V1 at non-inverting terminal is V1 = Va/4 + Vb/4+ Vc/4+ Vd/4 = [Va + Vb+ Vc+ Vd] /4 = [4+(-3v)+6v+(-1v) ] /4 = 1.5v. 4. If the gain of a non-inverting averaging amplifier is one, determine the input voltages if the output voltage, if the output voltage is 3v?
A. V1 =6v ,V2=3v and V3=2v
B. V1 =9v ,V2=5v and V3=-4v
C. V1 =8v ,V2=-6v and V3=1v
D. V1 =7v ,V2=4v and V3=-3v
Answer:A
Explanation : Using the superposition theorem the voltage V1 at non-inverting terminal is V1 = Va/4 + Vb/4+ Vc/4+ Vd/4 = [Va + Vb+ Vc+ Vd] /4 = [4+(-3v)+6v+(-1v) ] /4 = 1.5v. 4. If the gain of a non-inverting averaging amplifier is one, determine the input voltages if the output voltage, if the output voltage is 3v?
A. V1 =6v ,V2=3v and V3=2v B. V1 =9v ,V2=5v and V3=-4v C. V1 =8v ,V2=-6v and V3=1v D. V1 =7v ,V2=4v and V3=-3v
Explanation: As the output voltage = Average of all input voltage = sum of input voltage /3