Electronics - Operational Amplifiers - Discussion
Discussion Forum : Operational Amplifiers - True or False (Q.No. 30)
30.
Changing the input voltage to an op-amp circuit will change its voltage gain.
Discussion:
21 comments Page 2 of 3.
Ssss said:
1 decade ago
GAIN=OUTPUT/INPUT,
If any changes made in either output or input definetly gain change, how it can be false.
If any changes made in either output or input definetly gain change, how it can be false.
NAGARAJU SREERAMA said:
1 decade ago
Op-amp gain is infinite, so whatever the input, output is in saturation, and input doesn't effects the gain.
Rajat said:
1 decade ago
1+Rf/R1 and Rf/R1 are gain in op-amp for inverting and non inverting mode. So not dependent on input.
Jeyapriya said:
1 decade ago
Gain=out/in so if the input is changed according to that the gain also changed. Then why it is false?
CHITARANJAN said:
1 decade ago
Voltage gain=Vout/Vin=-Rf/R1 ,So no matter how the input voltage change. that's why option is FALSE.
Mani said:
1 decade ago
Gain = output/input.
So i/p is inversely proportional to gain. So gain is also change.
So i/p is inversely proportional to gain. So gain is also change.
Jitendra said:
1 decade ago
Whats the difference among amplifier and dc amplifier and op-amp ? Please explain.
Muthuraja said:
1 decade ago
The formula for Vout = -Rf/R1. So in this we don't have input voltage.
Subbu said:
8 years ago
Gain = output/input.
So, the output changes the gain also changes.
So, the output changes the gain also changes.
Vandana said:
1 decade ago
What's the meaning of 'd' here. Please explain jayapriya.
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