Analyze the circuit and determine the output voltage
Analyze the circuit and determine the output voltage
- Analyze the circuit and determine the output voltage ‘Vout’ of an Op Amp circuit, use a frequency of 150Hz.
- Construct Figure 18.15 in Multisim and perform the Fourier analysis.
- Run simulation to measure the frequency and the voltage gain of the amplifier.
- Change the input voltage magnitude to the values from the table and run the Fourier analysis again.
- Record the frequencies visible in the frequency spectrum in the table.
- Take the screen capture for the measurements for ‘Vout’.
Vin |
Calculated ‘Vout’ (pk -pk) |
Measured ‘Vout’
(pk -pk) |
Identified frequencies in the spectrum |
1V |
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1.5V |
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2V |
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3V |
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- Answer the following questions:
- Explain the effect of input voltage on the output voltage of the Op Amp.
- Express the voltage gain of an amplifier in terms of R1 and R2 and then compute it.
- From your measurements, what happens to the output when the magnitude of input voltage is increased?
- What is the effect of input voltage on the frequency spectrum? Explain with the help of measurement results and screenshots.
- Create a new word document called “Lab7_StudentID.docx” with your GID substituted into the file name.
- Save the analysis from step 2 and simulation results from step 3 along with the table and screen captures of all the measurements. Make sure to answer the questions in step 4.
- Upload file “Lab7_StudentID”.
Fourier Transform Week 8 Lab:
This week’s lab is based on the application of Fourier analysis of an RL circuit in Multisim.
- Watch video lecture entitled “Module 8 – Steady-State RL Circuit in Multisim”.
- Construct Figure 18.44 in Multisim with Vi(t) set to the pulse train as below.
- Run simulation to perform Fourier and Transient Analysis to measure the output voltage ‘Vc(t)’.
- Record the voltage ‘Vc (t)’ and the current ‘I’ through the capacitor in the table below.
- Take the screen capture for the measurements for ‘Vc (t)’ and line spectrum from Fourier analysis.
- Add 5% tolerances to resistor and inductor and repeat step 3.
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Measured ‘Vc (t)’ |
Measured current ‘I’ |
Without Tolerances |
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With Tolerances |
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- Answer the following questions:
- Explain the effect of tolerance on output voltage ‘Vc (t)’.
- Identify the frequencies and trace the frequency spectrum for the voltage ‘Vc (t)’.
- How does tolerance effect the frequencies in the spectrum and the output voltage? Explain with the help of measurement results and screenshots.
- Create a new word document called “Lab8_StudentID.docx” with your GID substituted into the file name.
- Save the simulation results from step 3 and 4 along with the table and screen captures of all the measurements. Make sure to answer the questions in step 5.
- Upload file “Lab8_StudentID.docx”.
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