Electronics - Operational Amplifiers - Discussion
Discussion Forum : Operational Amplifiers - Filling the Blanks (Q.No. 7)
7.
The feedback resistor has a value of ______ in the given circuit
2 k
10.5 k
21 k
40 k
Discussion:
2 comments Page 1 of 1.
Rahul said:
1 decade ago
This is a case of a Non-inverting amplifier
For the circuit of the fig, the voltage at the non inverting input is given by
Vo = V1(1 + Rf/R1)
630 = 30(1 + Rf/2)
Rf=40 kilo ohms
For the circuit of the fig, the voltage at the non inverting input is given by
Vo = V1(1 + Rf/R1)
630 = 30(1 + Rf/2)
Rf=40 kilo ohms
Enyew said:
4 years ago
Yes, you are correct @Rahul.
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