Important Questions of Differentiator – Integrator Circuit

In this post, some of the important questions of differentiator and integrator is given. It includes differentiate circuit, conditions for differentiate circuit, integrating circuit, conditions for integrating circuit and output of differentiate and integrating circuit.

Differentiate Circuit

What do you mean by differentiate circuit?

Differentiate circuit

It is circuit in which the output is directly proportional to differentiation of the input waveform.

What should be condition to be satisfied for differentiate circuit?

Necessary condition for differentiate circuit

The capacitive reactance should be 10 or more times than the resistance at the operating frequency.
The time period of the input waveform should be more than the time constant of the RC circuit.

What is output of the differentiate circuit for the following input?

DC, Sinusoidal waveform, square waveform, Triangular waveform.

Input – Output

DC – Zero
Sinusoidal waveform – Cosine waveform
Square waveform – Sharp narrow pulses
Triangular waveform – Rectangular waveform

Integrate Circuit

What do you mean by the integrating circuit?

Integrating circuit

It is circuit in which the output is directly proportional to integral of the input waveform.

What should be condition to be satisfied for integrating circuit?

Necessary condition for integrating circuit

The value of the resistance should be 10 or more times than the capacitive reactance at the operating frequency.
The time period of the input waveform should be very small than the time constant of the RC circuit.