Electronics - Operational Amplifiers - Discussion

Discussion Forum : Operational Amplifiers - General Questions (Q.No. 1)
1.
An ideal operational amplifier has
infinite output impedance
zero input impedance
infinite bandwidth
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
34 comments Page 2 of 4.

Gurdeep rai said:   1 decade ago
Infinite bandwidth means op-amp work within all range of frequencies, but practically it is not possible.

Elsiena said:   1 decade ago
Amplifier is an electronic device that increases the power of a signal. This occur due to the conversion of energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. When this is done, then an amplifier can be described as modulator of the output signal of the power supply.

Nupur said:   1 decade ago
What is impedance? please define in simple words.

Dips said:   1 decade ago
Impedance is like as resistance of capacitor and inductor.

Musab said:   1 decade ago
Open loop gain is the gain of op amp without feedback. So what is comparator?

T .jayaraju said:   1 decade ago
Comparator is a device to compare two signals. A and B are two signals it compare three conditions.

i.e A>B, A<B, A = B. Depending on the values it gives output.

Zaheer Abbas said:   1 decade ago
What is the actual meaning of the Word Offset Output? Please in details, I want it's answer.

Keshav said:   1 decade ago
Amplifier is electronics devices save output energy and give (save energy) to input energy with higher amplitude it's mean transmission energy between output energy and input (power supply).

Tamim said:   1 decade ago
Offset output : Showing some error voltage on output without input.

Anshul said:   1 decade ago
Hi Meda and Komal,

I have a doubt. The Gain of OPAMP is infinite. And we know that GBW product is always constant. Then how it is possible for OPAMP to have infinite bandwidth too?


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