Electronics - Operational Amplifiers - Discussion

Discussion Forum : Operational Amplifiers - General Questions (Q.No. 1)
An ideal operational amplifier has
infinite output impedance
zero input impedance
infinite bandwidth
All of the above
Answer: Option
No answer description is available. Let's discuss.
34 comments Page 1 of 4.

Manoj patel said:   4 years ago
An ideal opamp is used to make an inverting amplifier. The input terminals of the opamp are at the same potential difference.

Ramesh said:   6 years ago
I have a small doubt in ideal opamp in case opamp has high input impedance so how the current Will flow in opamp?

Aneesh malappuram said:   6 years ago
Operational amplifier is an amplifier which can be used to perform mathematical operations like integration, differentiation etc.

Archana said:   6 years ago
What is an operational amplifier?

Deepak said:   6 years ago
Is it possible to an op-amp have finite Input resistance and zero input offset voltage simultaneously?

Tamilan said:   7 years ago
1. High voltage gain.
2. Perfect balance V1 = V2.

These characteristics are also IDEAL OPAMP.

Saim said:   7 years ago
Op_amp has large input impedance to avoid loading effect. If Op_amp has very low input impedance, it would draw significant amount of current into it. It would act as large load on the circuit.

The fact that op_amp high i/p impedance ensure that it consume very little or no current from circuit.

Abhishek said:   7 years ago
Why the input impedance is infinity?

Why should we take this condition?

Chetan said:   7 years ago
Thank you all for the explanation.

Sharmeen said:   7 years ago
Negative feedback is used to stabilize voltage gain, decrease o/p impedance, increase i/p impedance, decrease distortion, increase bandwidth.

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