We did a couple of sample problems for a differentiating op amp. We figured what the signal output would look like depending on the three cases below.
Then we noticed something peculiar. When there is a sudden change in the input signal, there would be flat signal on the output side. This is shown on the bottom graph of the picture.
An Inverting Differentiator schematic looks like this:
For our pre-lab, we developed the function for V out. This is shown below:
Also we noticed, that w is not our regular frequency that we put in the Analog Discovery. So, we showed that w is the frequency we put in multiplied by 2 pi. This is on the bottom of the picture.
Then we calculated what our out put signal would look like if we plug in the values for our resistor and capacitor. We did this for three cases when f = 2KHz, 1KHz, and 500 Hz.
Then we built our circuit and this is is what our circuit looked like:
This graph shows the signal input and output when the f= 2 KHz.
This graph shows the signal input and output when the f= 1 KHz.
This graph shows the signal input and output when the f= 500 Hz.
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