Electronic Devices - Op-Amp Applications - Discussion

Discussion Forum : Op-Amp Applications - General Questions (Q.No. 20)
20.
Calculate the input voltage when Vo = 11 V.

1.1 V
–1.1 V
–1 V
1 V
Answer: Option
Explanation:
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Discussion:
2 comments Page 1 of 1.

Pragatheeswaran said:   1 decade ago
It is an non inverting amplifier.

Vo/Vin = 1+(Rf/Ri).
Vo/Vin =1+(100/10).
Vo/Vin = 11.
Vin = 11/11.
Vin =1 volts.

Priya said:   1 decade ago
It is non inverting configuration so output is (1+r2/r1)*vin.

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