Problem 1.21

The first circuit is a simple RC circuit that has a 200Hz 1VAC input with a 1k Ohm resister in series with a 1 uF capacitor where

the output is taken off the capacitor.

The rough calculations showed an expected output of .6227 VAC with a phase shift of -51.49 deg.

The spice sim showed an expected output of 0.62VAC with a phase shift of -51.5 deg.

The actual measurements showed an output of 1.34VAC and a phase shift of -49.1 deg.

The actual results required a normalization of the voltage. This is due to the function generator expecting a circuit impedance of 50 ohms and as such it outputs a voltage much higher than the 1V requested. After normalization the output voltage is 1.34VAC/2.14VAC = 0.626 VAC. This is very close to our expected results. The phase shift requires no normalization and is still relatively close to the expected results.

Problem 1.22

This circuit is a simple RC circuit that has a 200Hz 1VAC input with a 1k Ohm resister paralleled with a 2uF capacitor both in series with a 1 uF capacitor where the output is taken off the 1uF capacitor.

The rough calculations showed an expected output of .694 VAC with a phase shift of -6.84 deg.

The spice sim showed an expected output of 0.69VAC with a phase shift of -6.84 deg.

The actual measurements showed an output of 1.54VAC and a phase shift of -6.9 deg.

Once again, due to the equipment used in this lab the output voltage requires normalization. The normalized output is 1.54VAC/2.2VAC = 0.70VAC. With the corrected measurements both the output voltage and phase are a close match to the expected results.

Problem 1.24

This circuit is a simple RC circuit that has a 1V 1MHz square wave input with a 1k Ohm resister in series with a 1 pF capacitor where the output is taken off the 1pF capacitor.

The spice sim showed an expected peak output of 0.9555V.

We were unable to get lab measurements due to time constraints.