Electronic Devices - Operational Amplifiers - Discussion
Discussion Forum : Operational Amplifiers - General Questions (Q.No. 65)
65.
Calculate the input voltage if R1 = 100 
, Rf = 1 k, and Vout = 550 mV.
, Rf = 1 k, and Vout = 550 mV. 
Discussion:
4 comments Page 1 of 1.
Dharmveer kumar said:
7 years ago
Vo = (1+1000/100)Vi.
550 = 11Vi,
Vi = 50mv.
550 = 11Vi,
Vi = 50mv.
P v v rao said:
8 years ago
Vo = (1+(RF/Ri)Vi.
550mv = (1+(1000 ÷ 100))Vi.
Vi = 550/11,
Vi = 50mv.
550mv = (1+(1000 ÷ 100))Vi.
Vi = 550/11,
Vi = 50mv.
Amarjit said:
1 decade ago
No @Rashmi you are wrong.
Input is given to + part i.e. non-inverting,
Vo = (1+ (Rf/R1) )Vin.
Input is given to + part i.e. non-inverting,
Vo = (1+ (Rf/R1) )Vin.
Rashmi Byakod said:
1 decade ago
Try this Vo=(rf/r1)Vin.
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