5/11 Phasors: Passive RL Circuit Response

         The purpose of this lab is to observe the unique function of passive RL circuit. We need to know how to calculate in the phasor domain

Pre lab:

These are the calculations we did for this lab.

The cutoff frequency for 1mH and 470Ohm resistor is 47000/2Pi = 7480Hz
The frequency with one tenth of cutoff frequency is 748Hz
The frequency with ten times of cutoff frequency is 74800Hz

This is the actual set up of our experiment.

The following photos are the result of our lab

1. the phase difference is (3.102)/(13.5)*360 = -82.72degree,

2. the phase difference is (16.87)/(135)*360 = -44.9degree,

3. the phase difference is (0.03)/1.45 = -7.448degree,

summary

    In today's class ,we learned how to convert the time domain to the phasor domain. Then, we can do the futher calculation.The following are some rule of the converting: