What is poles and zeros

1. What do you mean by poles and zeros?
2. What is poles and zeros in Z transform?
3. What are poles and zeros in opamp?

What do you mean by poles and zeros?

Poles and Zeros of a transfer function are the frequencies for which the value of the denominator and numerator of transfer function becomes zero respectively. The values of the poles and the zeros of a system determine whether the system is stable, and how well the system performs.

What is poles and zeros in Z transform?

Introduction to Poles and Zeros of the Z-Transform

The two polynomials, P(z) and Q(z), allow us to find the poles and zeros of the Z-Transform. The value(s) for z where P(z)=0. The complex frequencies that make the overall gain of the filter transfer function zero.

What are poles and zeros in opamp?

For a transfer function, a zero is defined as the value of s for which the transfer function's value is zero. A pole is defined as the value of s for which transfer function's value goes to infinity.