ECEN 215 – PRIN OF ELECTRICAL ENGRFall 2018Lab 5: Introduction to AC SignalsECEN 215 – PRIN OF ELECTRICAL ENGRFall 2018 Lab 5: Introduction to AC Signals Submitted by:Student Name UIN: Section # Group # 512 Date Performed: October 8th , 2018I. ObjectiveThe purpose of this lab was to understand how Kirchoffs Law can be applied to AC circuits.II. Procedure1. We connected the potentiometer to a portion of the breadboard to measure themaximum and minimum resistance that is could achieve. 2. Next, we built the circuit and recorded what happens to the phase shift as theresistance of the potentiometer was changed. 3. The potentiometer was set to its maximum resistance and the time shift was recorded.4. Using the time shift from the previous step, the phase shift was calculated. 5. We then measured the RMS Voltage of the source, potentiometer, and the capacitorwhen the resistance of the potentiometer is at a maximum. III. Difficulties1. There were no difficulties encountered in this lab experiment.IV. ResultsA. We found the minimum and maximum resistances of the potentiometer to be 0.5 and486.1 respectively. B. Using the waveforms, it was found that as the resistance of the potentiometer is increased, the phase shift, , also increases.C. The time shift, t, was found to be 3.9163 ms. This number, along with Period (T) = 33.452 ms, was then used to calculate the phase shift, : = (t/T) 2(3.9163 / 33.452) 2 = 0.73521D. When the resistance of the potentiometer is at a maximum: Figure 1E. Voltage of the potentiometer, VP = 975mV Voltage of the source, VS = 1.414 V Voltage of the capacitor, VC = 997 mVF. KVL does not apply for the above measurement. If KVL fails it is because the phase angle was not included. V. Conclusion In conclusion, we found that when a potentiometer is at its maximum resistance, the phase anglewill increase, and when applying KVL you must include the phase angle for it to
View Full Document
Unlocking...