Shorthand/Voltage Divider Passive components RC Circuit Instrumentation Amplifier OpAmps

Transcription

1 Shorthand/Voltage Divider Passive components RC Circuit Instrumentation Amplifier OpAmps

2 Attendance Competency (4 th out of 11) PLEASE TAKE OUT COMPETENCY SCORECARDS COMPETENCY: ATTENDANCE PLEASE DON T TRANSFER POINTS FROM ONE SCORECARD TO ANOTHER AT THIS TIME!!! WE WILL DO IT DURING NEXT ACTIVITY

3 Teams Monday 10:30 am Lab (16222) ROBERTO* ALEJANDRO BIANCA GROUP 1 GROUP 3 GROUP 5 Alanazi, Fayed H. Chavira, Victor Alqabandi, Abdulrazzaq D. Escobar, David L. Issa, Zahraa M. Baquier, Carlos Mckenzie, James M. Gomez, Emily G. Ramirez, Ronald S. Rodriguez, Edgar A. Maldonado, Luis GROUP 2 GROUP 4 GROUP 6 Alqahtani, Bader N. Almutairi, Abdullah Lujan, Jesus A. Lopez, Eduardo Garcia Martinez, Alex Sanchez, Isaac G. Wood, Orion Medina, Miguel A. Vasquez, Raymon *LAB REPORT GRADER FOR THIS LAB

4 Teams Monday 1:30 pm Lab (18567) ALEJANDRO* ROBERTO BIANCA ZENAIT GROUP 1 GROUP 3 GROUP 5 Aldhafairi, Abdullah T. Alkandari, Fares K. Almutairi, Musad N. Ceniceros, Andres Guaderrama, Alfonso Rodriguez, Edgar D. Martinez, Jordan E. Soto, Adrian C. Villalva, Daniel N. GROUP 2 GROUP 4 GROUP 6 Alvarado, Genesis N. Alvarez, Brian A. Avila, Armand J. Lara, Isaac A. Lozano, Oscar E. Kus, Tyler S. Martinez, Angel Ruiz, Jonathan Magana, Danny J. Salazar Vazquez, Oscar E. *LAB REPORT GRADER FOR THIS LAB

5 Teams Wednesday 1:30 pm Lab (11752) BIANCA* ZENAIT ROBERTO ALEJANDRO GROUP 1 GROUP 3 GROUP 5 Alvarado, Cristobal A. Alfarisi, Yousef Voglewede, Lindsay Merritt, Darrick B. Marquez, Christopher E. Sosa, Omar A. Simla, Nannam Sagredo, Andres Santacruz, Kenji G. Rios, Andres Burner, Ian P. Torres, Ian A. GROUP 2 GROUP 4 GROUP 6 Villa, Axel G. Amparan, Ashley N. Barrio, Mathew J. Tobias, Eunize A. Reyes, Miguel Mora, Jose N. Medrano, Jonathan D. Zubia, Raquel A. Almutairi, Fawaz M. *LAB REPORT GRADER FOR THIS LAB

6 Teams Thursday 1:30 pm Lab (13015) HECTOR* ROBERTO ZENAIT GROUP 1 GROUP 3 GROUP 5 Alhanfoosh, Saud Alvarez, Christian J. Avalos, Arturo De Lara, Brandon Enriquez, Nicholas A. Esquer, Stefania Valencia, Benjamin Monroy, Isaac Ortiz, Luis Y. Marin Gutierrez, Arleth Rojas, Camila GROUP 2 GROUP 4 GROUP 6 Burner, Sabrina M. Ceniceros, Matias De la Rosa, Luis A. Guerrero, Josue Konrardy, Gregory D. Lopez Iglesias, Ricardo A. Palomares, Samantha N. Valenzuela, Manuel D. Sanchez, Francisco *LAB REPORT GRADER FOR THIS LAB

7 Competency Scorecard Scorecard Name: 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) ID (last 4): 6 TH OUT OF 11

8 GO TO RESOURCES AND OPEN LAB WEEK 4 POWER POINT Course Website Website: Labs.html Contents: Syllabus/Schedule Equation Sheet Lectures (Power Points) Modules Report Resources (Template, Rubric) Tutoring Schedule Open Lab Schedule Clearing Cache

9 Weeks 1-3: Aug 28 th Sept 15 Week 1 Week 2 Week 3 Competencies Problem Solving: Ohms Law MATLAB Series vs Parallel Circuits Ethics Problem Solving: Voltage/Current/Resistance/Power Analog Discovery: Wave Generator MATLAB Simple Report Breadboard: Series Circuit & Parallel Circuit Measure Voltage Drop MATLAB Simple Report

10 Breadboards: How they work Outside vertical rows connected vertically but not horizontally REVIEW

11 Breadboards: How they work The left and right sides are isolated by the middle channel REVIEW Inside horizontal rows are connected but not vertically

12 Grd Ch1- Ch1+ V Breadboards: 3 Ways to Connect Resistors in Series Grd V Ch1- Ch1+ R1 R1 R2 R1 V R2 R2 R3 R3 R3 Grd Ch1- Ch1+ REVIEW

13 Exercise: Voltage Divider and Shorthand Notation (3,8) (1) Use the shorthand notation/equivalent Circuit method to reduce the circuit until there are only 2 resistors left. For each step, show the equivalent circuit, and write the shorthand notation expression. (2) Use the voltage divider method to determine the voltage drop across the resistor connected to ground.

14 Competency Scorecard Scorecard Name: 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) ID (last 4): 3 rd OUT OF 15 3 rd OUT OF 7

15 xx Intro to Capacitors Capacitors store charge with applied voltage. Unit for capacitance is the Farad and 1 Farad = 1 Coulomb/Volt or F=C/V. One Farad capacitor stores 1 coulomb of charge per 1 volt. Capacitors DO NOT react instantaneously with changes in voltage. Capacitors are like a bath tub, it takes time to fill them up, and it takes time to empty them.

16 xx Capacitor Simulator

17 RC Circuit 1. BUILD CIRCUIT USING YOUR AD 5 V POWER SUPPLY 2. PLACE CH1+ AT POINT A A 3. DETERMINE THE VOLTAGE AT NODE A 4. DESCRIBE THE SIGNAL F WHAT SHOULD YOU SEE?

18 Competency Scorecard Scorecard Name: 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) ID (last 4): 3 rd OUT OF 9 TAs: PLEASE STAMP AS STUDENTS COMPLETE THIS SECTION

19 Competency Scorecard Scorecard Name: ID (last 4): 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) 1 st OUT OF 9 TAs: PLEASE STAMP AS STUDENTS COMPLETE THIS SECTION

20 RC Circuit 1. SWITCH THE 5 V POWER SUPPLY FOR THE WAVEFORM INDICATED ON THE FIGURE. WHAT SHOULD YOU SEE HERE? A 2. KEEP CH1+ AT POINT A 3. DESCRIBE THE VOLTAGE AT NODE A 4. EXPORT YOUR DATA AND SAVE IT USING R C 1 FILENAME F 5. PLOT IN MATLAB USING THIS COMMAND >> plot(rc1(:,1),rc1(:,2)) FILENAME ALL ROWS COLUMN 1 COLUMN 2

21 Competency Scorecard Scorecard Name: ID (last 4): 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) 2 nd OUT OF 9 TAs: PLEASE STAMP AS STUDENTS COMPLETE THIS SECTION

22 Competency Scorecard Scorecard Name: 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) ID (last 4): 4 th OUT OF 9 TAs: PLEASE STAMP AS STUDENTS COMPLETE THIS SECTION

23 RC Circuit 1. INCREASE THE FREQUENCY OF THE WAVEFORM TO 1KHZ. 2. KEEP CH1+ AT POINT A A 3. DESCRIBE THE VOLTAGE /SIGNAL AT NODE A 4. EXPORT YOUR DATA AND SAVE IT USING R C 2 FILENAME F CHANGE SCOPE SETTINGS TO 1 ms/div and 200 mv/div

24 Competency Scorecard Scorecard Name: ID (last 4): 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) 3 rd OUT OF 9 TAs: PLEASE STAMP AS STUDENTS COMPLETE THIS SECTION

25 KEY THE VOLTAGE AT A IS LESS THAN 1V, I.E. LESS THAN THE EXPECTED VALUE BASED ON THE VOLTAGE DIVIDER METHOD. THIS IS BECAUSE THE CAPACITOR CANNOT REACT INSTANTANEOUSLY TO THE CHANGE IN VOLTAGE AT THIS FREQUENCY. THE CAPACITOR CANNOT CHARGE AND DISCHARGE AND THUS THE VOLTAGE DIFFERENCE ACROSS THE CAPACITOR IS LESS THAN 1V.

26 Competency Scorecard Scorecard Name: 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) ID (last 4): 5 th OUT OF 9 TAs: PLEASE STAMP AS STUDENTS COMPLETE THIS SECTION

27 Simple Report (6)

28 Simple Report (6) The voltage measured at A in Figure 1 is a constant 2.5 V, which is expected based on the voltage divider method. The capacitor acts as an open circuit with a voltage drop of 2.5 V.

29 Simple Report (6) Figure 2 includes the RC circuit with the 1 Hz and 1 khz signals. The voltage for the 2 V - 1 Hz signal at A is 1V, as shown in Figure 3, which is the expected value based on the voltage divider method. The voltage at A for the 2v - 1kHz circuit is less than 1V, the expected value based on the voltage divider method, as shown in Figure 4. This is because the capacitor cannot react instantaneously to the change in voltage at this frequency. The capacitor cannot charge and discharge, and thus the voltage difference across the capacitor is less than 1 V.

30 Competency Scorecard Scorecard Name: 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) ID (last 4): 3 RD OUT OF 12 TAs: PLEASE STAMP AS STUDENTS COMPLETE THIS SECTION

31 Instrumentation Amplifier Chip R G =100 kω/(g 1) The chip provides an output which is simply, Vout=Vref+ G(Vin+ Vin )

32 Instrumentation Amplifier Chip R G =100 kω/(g 1) The chip provides an output, Vout=Vref+ G(Vin+ Vin ) RG 5V Ch1+ Ch1- Grd 2.5 V Ref Grd

33 Competency Scorecard Scorecard Name: 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) ID (last 4): 4 th OUT OF 9 TAs: PLEASE STAMP AS STUDENTS COMPLETE THIS SECTION

34 xx Operational Amplifier (OpAmp) Non Inverting Input Voltage Inverting Input Voltage (1) (2) (3) Output Voltage

35 xx Op-Amp Chip (LMC6484 Op-Amp) There are 4 Op-Amps on your LMC6484 chip.

36 xx Op-Amp Chip (LMC6484 Op-Amp) Voltage connections: V+ will be connected to 5V, and V- will be connected to ground. Orient the Op-Amp so you can connect easily to 5 V and ground.

37 xx Op-Amp Chip (LMC6484 Op-Amp) Notice that for each Op-Amp, the outputs are all at the corners of the chip.

38 xx Op-Amp Chip (LMC6484 Op-Amp) The inverting (-) and non-inverting (+) inputs for each Op-Amp are shown on the schematic below Notice that the inverting (-) input are always next to the output pins.

39 Competency Scorecard Scorecard Name: 1. TEAMWORK (3 of 5) 2. PROFESSIONAL (5 of 7) 3. PROBLEM SOLVING/UNITS (7 of 15) 4. ATTENDANCE (9 of 11) 5. MATLAB & GRAPHING (6 of 12) 6. COMMUNICATION (6 of 12) 7. SIMULTANEOUS EQS (3 of 5) 8. CIRCUIT ANALYSIS (5 of 7) 9. BREADBOARD KNOWLEDGE (5 of 9) 10. AD/WAVEFORMS (5 of 9) ID (last 4): 5 th OUT OF 9 TAs: PLEASE STAMP AS STUDENTS COMPLETE THIS SECTION

40 Today s Competencies 1 Attendance 4 1 Problem Solving/Circuit Analysis 3,8 3 Breadboards 9 3 Analog Discovery MATLAB/Graphing 5 1 Communication 6

41 Lecture Sept 22 nd - Lab Report Template (6) - System of Equations (3,4) - Safety (3) * Laptop needed for every lab and lectures