Postlab 3

pdf

School

Texas A&M University *

*We aren’t endorsed by this school

Course

325

Subject

Electrical Engineering

Date

Apr 3, 2024

Type

pdf

Pages

18

Uploaded by parthgrover2403

Report
ECEN 325- Section 512 Lab 3 - Operational Amplifiers - Part 1 Lab Members: Tushar Oomman (531004033), Parth Grover (631003546) TA: Sravanthi Ratna Jyothi Bysani Date Lab Performed: 09/20/2023 Due Date: 09/26/2023
Purpose: The purpose of this lab was to study the properties of the operational amplifiers with inverting and non-inverting amplifier circuits. Introduction: In this lab we completed a prelab and simulated an inverting amplifier circuit, a non-inverting amplifier and a voltage follower and recorded the magnitude and phase of the bode plots, the time-domain waveforms, and calculated the input voltage in which clipping occurs. and the total harmonic distortion. We then circuited an op-amp in an offset current measurement configuration and calculated the DC input currents. We then circuited a DC offset voltage measurement configuration and calculated the input offset voltage and used a 100 kilo-ohm potentiometer to zero the output of the op-amp to compensate for the op-amps offset voltage. We finally circuited the inverting and non-inverting circuits and then took the same measurements we simulated in the prelab. Proof of Files: Measurements: 1. Op-Amp parameters a. V+ = -2.966 mV b. V- = -2.955 mV c. I+ = -2.966 /100 k-ohm = -2.966 *10^8 d. I- = -2.955 / 100 k-ohm = -2.955*10^8 e. Iof = |I+| + |I-| = 5.921 * 10^-8 = 59.21 nA 2. Input offset Voltage a. Vout = 1.45 mV b. G = -R4/R3 = -50/10 = -5 c. Vin = Vout/G = 1.327/-5 = -0.2654 mV Parameter Measured Manufacturers Input Offset Current 59.21 nA 20 - 200 nA Input offset Voltage -0.2654 mV 1-6 mV Gain -5 V/V == 13.979 dB Up to 106 dB 3. Calculated Simulated and Measured Results Inverting Amplifier Calculated Simulated Measured Magnitude Bode Plot @ 1 kHz 3 V/V (given) should be the gain 9.54 dB 9.542 dB 10.27 dB
Vin Amplitude 200 mV 199 mV 217 mV Vout Amplitude 600 mV 606 mV 670 mV Gain 3 V/V 3.04 V/V 2.08 V/V Vimax N/A 2.5 V 1.8 V Total Harmonic Distortion (THD) N/A 21.584 % 0.836 % Non - Inverting Amplifier Calculated Simulated Measured Magnitude Bode Plot @ 1 kHz 6 V/V (given) should be the gain 15.56 dB 15.563 dB 15.47 dB Vin Amplitude 200 mV 199 mV 232 mV Vout Amplitude 1.2 V 1.19 V 1.29 V Gain 6 V/V 5.98 V/V 5.56 V/V Vimax N/A 4 V 1 V Total Harmonic Distortion (THD) N/A 38.89% 0.634 %
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
Figure 1: Positive terminal voltage
Figure 2: Negative terminal voltage
Figure 3: Zeroed voltage with the potentiometer
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
Figure 4: Input offset voltage
Figure 5: Bode plots for inverting amplifier, 1kHz magnitude
Figure 6: Magnitude of inputs and outputs for the inverting amplifier
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
Figure 7: Output voltage before clipping for inverting amplifier
Figure 8: Output voltage clipping for inverting amplifier
Figure 9: THD for inverting amplifier
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
Figure 10: Bode plots for non-inverting amplifier, 1kHz frequency
Figure 11: Magnitudes of the input and output voltage for non-inverting amplifier
Figure 12: Output voltage before clipping for non-inverting amplifier
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
Figure 13: Output voltage clipping for non-inverting amplifier
Figure 14: THD for the non-inverting amplifier Discussion: Most of our data taken during the lab and the one simulated are within a reasonable range of error. However, the biggest difference came in the THD measurements of the inverting and the non-inverting amplifier. The simulated values seem to be a lot higher than the ones calculated in the lab. Reason behind this miscalculation could most probably be due to human error. As this was our first time calculating THD, the team could have missed some important aspect used in calculating the THD. However, we were
able to capture the right values during the lab. Our lab TA checked off our work and were also told we did not have to get any values for the voltage follower circuit.
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help

Related Documents

242lab5.pdf
Lab 1.docx
Postlab 2.docx
D2L-Exp3.docx
D2L-Exp4.docx
Planning_Document_Question_Check_In.docx
Lab 4 - Electric Potential - W24.pdf
Postlab 4.pdf
Quiz-1 Solution.docx
Copy of Lab 3 Paper_.docx
HW02 NLP.docx
ECE2323Spring2024_Lab5.pdf
Related Questions
I need to create a multistage amplifier. With the following specs.
help  with some explanation
6) Consider the following multistage amplifier. Draw the corresponding small signal model. Label, Vin, Vo1 and Vo. Do NOT make any approximations. Do NOT perform small signal analysis with this model. Just draw the small signal model. Show your work! Vin Vcc malli Q1 Re1 Vo1 Vcc ww1. Rc2 Q2 Re2 Vo
II.The following figure shows a class AB amplifier. (a) Determine the parameters of dc VB (Q1), VB (Q2), VE, ICQ, VCEQ (Q1), VCEQ (Q2). (b) For a 5-Vrms input, determine the power that is provided to the load resistor, and (c) Draw the output signal +Vcc +9 V 1.0kn D: R 5.0 V rms R2 10 kN -Vec
What are resistors for?  What are capacitors for?   What are transistors for? What are Operational amplifiers for?  What are oscilloscope for?
Book: Operational amplifiers and Linear Integrated circuits Chap#03
Design a linear amplifier, based on a bipolar junction transistor 2N3904 in common emitter configuration. The supply voltage is 28V. The quiescent operating collector current for the amplifier should be around 10mA. The data sheet for the transistor shows that the DC current gain at this operating current is about 200. Draw the circuit diagram of your design. Label all the components in the circuit. Show all the voltages and currents that you use for calculations in your design. Label them using consistent naming convention.
Which amplifier model contains a) a current-controlled voltage source? b) a current-controlled current source? c) a voltage- controlled current source?
3) please solve with work , will upvote
An operational amplifier consisting of three cascaded stages has a voltage gain of 3500. The gain of the first two stages is known to be -5 and -900. What is the voltage gain of the last stage and which type of MOSFET amplifier would you prefer for this stage?
4)please solve with work , will upvote
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:PEARSON
Text book image
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Text book image
Programmable Logic Controllers
Electrical Engineering
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Text book image
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:9780078028229
Author:Charles K Alexander, Matthew Sadiku
Publisher:McGraw-Hill Education
Text book image
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:9780134746968
Author:James W. Nilsson, Susan Riedel
Publisher:PEARSON
Text book image
Engineering Electromagnetics
Electrical Engineering
ISBN:9780078028151
Author:Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:Mcgraw-hill Education,
SEE MORE TEXTBOOKS
Related Questions
Recommended textbooks for you
Text book image
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:PEARSON
Text book image
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Text book image
Programmable Logic Controllers
Electrical Engineering
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Text book image
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:9780078028229
Author:Charles K Alexander, Matthew Sadiku
Publisher:McGraw-Hill Education
Text book image
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:9780134746968
Author:James W. Nilsson, Susan Riedel
Publisher:PEARSON
Text book image
Engineering Electromagnetics
Electrical Engineering
ISBN:9780078028151
Author:Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:Mcgraw-hill Education,
SEE MORE TEXTBOOKS