PROCEDURE
1. Measure and record the component values (using the DMM/ LCR) for the circuit shown in Figure 8-1
3. Calculate the resonant frequency using measured values of components? fr =
2.5V pk voltage input and Channel 1 of the oscilloscope to measure the applied input. Your input frequency is the varying parameter of this exercise and is indicated in the table below.
5. Use Channel 2 to measure the output voltage.
6. Set the oscilloscope to measure in the following order: (Source 1) frequency, (Source 1) Max Voltage, (Source 2) Max Voltage, (Source 2->1) Phase
7. For each frequency in Table 8-1 (next page) record Vout (pk) magnitude and phase:
Note: Be sure to include the appropriate sign of each phase angle .
8. Based on theoretical knowledge of the voltage and phase angle at resonance and the measured values recorded in Table 8-1, the circuit resonant frequency falls between which two
9. Based on theoretical knowledge of the voltage and phase angle at resonance, vary the frequency until the actual resonant frequency is reached (A = Oland take a screenshot (1). Record the actual resonant frequency here: fr = l<
10. Based on lecture, and the circuit above, what is the output voltage at the critical frequencies? Vow= I 74 V
11. Again, vary the frequency until the value found in Step 10 above is the measured voltage at the output. This will occur at two different frequencies. Take a screenshot (2 & 3) at each of these frequencies and record the lower and upper critical frequencies here:
and Lu= ()
SUBMITTAL - Make sure all submitted work is clearly your own. Your submittal will include the following report sections:
LAB COVER SHEET and TITLE PAGE
OBJECTIVE - using complete sentences, describe the objectives of the exercise
PROCEDURE - this may be completed in numbered steps (using your own words)
DATA-This section will include data/results created and clearly labeled/identified by you: (1) Circuit, (1) Table containing nominal and measured values of all components used, Calculations including any/all
calculations performed throughout the course of this lab, (3) Screenshots, (1) Table containing the measured voltages and corresponding phase angles (1) Plot of frequency (logarithmic scale) vs. Vout (magnitude)(linear scale) (Your DATA should be presented in the above order and should be digitally formatted.)
DISCUSSION - Using complete sentences, compare the theoretical (calculated) values with measured
values and discuss any observations.
CONCLUSION - Using complete sentences, describe the success (or lack of success) performing the experiment using specific values and % error. Offer an explanation for measured values significantly different than expectations (theory).