Electronic Devices - Operational Amplifiers - Discussion
Discussion Forum : Operational Amplifiers - General Questions (Q.No. 14)
14.
Calculate the overall voltage gain of the circuit if R1 = 100 
and Rf = 1 k.
and Rf = 1 k. 
Discussion:
15 comments Page 2 of 2.
Avdhut said:
1 decade ago
Its very simple....1+(RF/R1) which is the gain off non inverting amplifier.
Naina said:
1 decade ago
As the figure shows, the feedback is given to the noninverting terminal so gain will be (-rf/r1) so answer should be -10 according to the above equation.
Dhruvansh gupta said:
1 decade ago
Here, the gain is =-10. Because the feedback through r1 not rf.
Rajesh Gaini said:
5 years ago
Voltage gain Formula Is 1+Rf/R1.
= 1 + 100/10,
= 11.
= 1 + 100/10,
= 11.
Padma T M said:
5 years ago
It is a Non-Inverting Amplifier.
So, the voltage gain formula, Av = 1+(Rf/R1).
= 1+(1000/100),
= 100+1000/100,
= 1100/100 = 11.
So, the voltage gain formula, Av = 1+(Rf/R1).
= 1+(1000/100),
= 100+1000/100,
= 1100/100 = 11.
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