Day 20 (Day22 on notes)

Today we learned how to use phasors on the same circuit analysis techniques that we used with DC. We also did a Phasors: Passive RL Circuit Response Lab.

Above we used NODAL ANALYSIS and converted circuit components to phasors and solved for node voltages.

Here we used MESH ANALYSIS to solve for mesh currents on an ac circuit.

Phasors: Passive RL Circuit Response Lab:
the objective for this lab is to measure the gain and phase response of a passive RL circuit and compare with theoretical values. We will only be concerned with the steady-state response.

Above is our circuit layout where we will measure input and outpout voltages.

Above we have an input sin wave of 2V and 10kHz in blue and output wave in orange.

Above we have an input sin wave of 2V and 20kHz in blue and output wave in orange.

Above we have our theoretical values and our measured values. On measured data, gain is calculated by Vo/Vi and phase angle by deltaT/T*360.

Above we use SOURCE TRANSFORMATION on the left side and on the right we use THEVENIN EQUIVALENCE on the right using phasors.