Integrator

Published:2009/7/23 21:54:00 Author:Jessie | From:SeekIC

This circuit was originally developed to perform the mathematical operation of integration in analog computers. As shown by the frequency-response plot of Fig. 10-41B, an integrator is essentially a low-pass filter with a frequency response that decreases at 6 dB per octave. When S1 is in position 1, the amplifier is connected in unity gain, and C1 is discharged, which sets an initial condition of zero volts. With S1 in position 2, the amplifier is connected as an integrator, where the output changes in accordance with a constant times the time integral of the input.



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