Electronic Devices - Op-Amp Applications - Discussion
Discussion Forum : Op-Amp Applications - General Questions (Q.No. 15)
15.
Calculate the output voltage if V1 = 300 mV and V2 = 700 mV.
Discussion:
2 comments Page 1 of 1.
Maharlikan Engineer said:
7 years ago
Consider both stages as non inverting op amp.
(1)
Pragatheeswaran said:
1 decade ago
In first stage:
Vo = (-Rf1/R1)*V1
= -2*300mv
= -600mv
= -0.6v.
In second stage:
Vo =(-Rf2/R2)*V1
=(-500/100)*(-0.6v)
=3v.
Vo =(Rf3/R3)*v2
=(-500/50)*7
=7v.
Vtot=3-7
=-4volt.
Vo = (-Rf1/R1)*V1
= -2*300mv
= -600mv
= -0.6v.
In second stage:
Vo =(-Rf2/R2)*V1
=(-500/100)*(-0.6v)
=3v.
Vo =(Rf3/R3)*v2
=(-500/50)*7
=7v.
Vtot=3-7
=-4volt.
(1)
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