Integral Controller

Integral controller is a controller which serves to eliminate oscillations in the error signal. The output of this controller will generate output a ramp-shaped voltage (TIPA ramp) leading to an infinite value. In this case, the maximum is to the saturation value of op-amp near value of power supply voltage (VCC). One of integral controller circuit is shown in Figure 1 below.
Figure 1: Integral Controller 

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