Chapter 14. The integrator and the integral operation circuit

The integrator output signal proportional to the input signal; 

First, the integrator circuit diagram:

Voltage across R is V-Vi;

and so

By maintaining a larger RC product, so

then  

Circuit for integrating an input signal thereof;

Integrator is widely applied to the simulation, the feedback control system is mainly used, analog to digital conversion, generating waveform aspects like.

Note: a large voltage applied to the resistor to simulate a large current source.

 Second, a current source for charging the capacitor C may generate the ramp voltage waveform

It can be seen as a large voltage V and the resistance R is approximately a large current source;

Which generates a waveform:

 Third, the integral calculation circuit

Virtual virtual short and clear off

then

That is, the integrator output and the input Uo proportional;

Integral calculation circuit may convert the square wave into a triangular wave; 

When the condition of the RC integrator circuit a lot;