Lab Day 24

Signals With Multiple Frequency Components Lab 

In this lab we calculated the magnitude response of an electrical circuit and use this information to infer the effect of the circuit on some relatively complex input signals. We applied the following input signals types:

- a signal composed of multiple sinusoidal waves of different frequencies

- a sinusoidal signal with a time-varying frequency (aka sinusoidal sweep)

Here are the calculations for the pre-lab:

 This is a picture of our circuit:

Input voltage is a custom waveform: 20{sin(1000*pi*t)+sin(2000*pi*t)+sin(20000*pi*t)}:

 Here is the Vout across the resistor (blue) in comparison to the Vin (pink):

This is the calculation Theoretical vs Experimental with the %error.

In conclusion, we went over the transfer function, learned how to calculate gain and poles, and did a lab to see how input frequency affects the output graph.