Junior Electronics Lab

Week 17

  1. Finals Week, but no final exam in this course!
  2. Congratulations on completing your Final Project Talks. We enjoyed them very much. Talk scores will be posted this week.
  3. Final Papers were due on Friday by 5PM in the D2L dropbox. Scores will also be posted later this week.
Items to turn in (Week 17):
  1. Everything should be turned in by now. Congratulations!

Week 16

  1. Final Week of the course: Project Presentations and Papers.
  2. Project Talks are Tuesday starting at 1:30P. See the schedule in the lab for your presentation time. Plan for a 10 minute presentation with 5 minutes for questions at the end. A total of 15 minutes is available per talk.
  3. Also, please record a short video of your project. Start the video with a greeting, your project title, and then show anything you like about the operation of your project at this point. Upload the video to our D2L site to the same dropbox as your Project Talk. Also, upload the video to YouTube and add on the 'tags' information "PHYS3330 Spring 2013" so we can find the video by a search engine.
  4. Final Papers are due on Friday by 5PM. They are the same format as your previous laborator reports.
Items to turn in (Week 16):
  1. Final Project Talks are on Tuesday. See the schedule in the lab for talk times. Please plan to attend starting at 1:00PM in the lab. FCQs will be filled out during breaks. Please attend! Turn in the Final Talks to the appropriate dropbox in Desire2Learn
  2. Project Papers are due in the dropbox on D2L by 5PM on Friday May 3, 2013.

Week 15

  1. Fourth and Final Week of Projects.
  2. For your THIRD project progress report, record a short video of your project at this point. Start the video with a greeting, your project title, and then show anything you like about the operation of your project at this point. Upload the video to our D2L site. Also, upload the video to YouTube and add on the 'tags' information "PHYS3330 Spring 2013" so we can find the video by a search engine.
  3. Start preparing your talk for next week. We will post a blank sign-up sheet for talk scheduling in the lab. Sign up for your time ASAP this week. A sample power point presentation is available. Look under the Projects tab also.
Suggested reading (Week 15):
  1. Look for additional references for your Project. Try to have at least 4 references for the final paper.
Items to turn in (Week 15):
  1. Project progress videos, turn them in to YouTube and to the appropriate dropbox in Desire2Learn
  2. Schedule your talk on the schedule sheet in the lab.

Week 14

  1. Third Projects Week.
  2. Your SECOND project progress presentations this week in lecture. Add to your first progress report a pair of slides. One slide should show a picture of the present circuit. The second slide should show an oscilloscope trace or other example of the circuit doing something. A short video can be effective (but is not required). Tuesday lab groups will present in Tuesday lecture. Thursday lab groups present in Thursday lecture. All are encouraged to attend to see the range of projects. A sample power point presentation is available. Look under the Projects tab also.
Suggested reading (Week 14):
  1. Look for additional references for your Project
Items to turn in (Week 14):
  1. SECOND Project progress presentations, turn them in to the appropriate dropbox in Desire2Learn

Week 13

  1. Second Projects Week.
  2. Short project progress presentations this week in lecture. Tuesday lab groups will present in Tuesday lecture. Thursday lab groups present in Thursday lecture. All are encouraged to attend to see the range of projects. A sample power point presentation is available. Look under the Projects tab also.
Suggested reading (Week 13):
  1. Look for additional references for your Project
Items to turn in (Week 13):
  1. Project progress presentations, turn them in to the appropriate dropbox in Desire2Learn

Week 12

  1. Welcome back from SPRING BREAK: This week we begin work on the independent projects.
  2. No lecture this week
Suggested reading (Week 12):
  1. Look for good references for your Project
Items to turn in (Week 12):
  1. Nothing due this week.

Week 11

  1. SPRING BREAK
Suggested reading (Week 11):
  1. Any good book!
Items to turn in (Week 11):
  1. Turn in early and get some well-deserved sleep.

Week 10

  1. Lab 10 "Digital Electronics II: Microcontrollers" is the lab for this week.
  2. UNEXPECTED POP-review in Tuesday lecture this week: Covers the material that we think will be useful for the mid-term EXAM that takes place Thursday during the lecture period.
  3. MID-TERM EXAM, Thursday 1:00-1:50P during regular lecture period.
  4. See also the Hints tab for useful instructions on producing better Mathematica data and theory plots.
Suggested reading (Week 10):
  1. Not much in Fischer-Cripps on microcontrollers.
  2. For additional information you can read H&H Section 8.03.
  3. For the most useful material, take a look at the Arduino website http://www.arduino.cc
Items to turn in (Week 10):
  1. Lab 10 prelab problems to the D2L dropbox. Due lab day by 1PM.
  2. Lab 9 report to the D2L dropbox. Due lab day by 2PM.
  3. Project Proposals due in the dropbox Friday by 5PM.

Week 9

  1. Lab 9 "Digital Electronics I: Logic, Flip-Flops, and Clocks" is the lab for this week.
  2. UNEXPECTED POP-QUIZ in Tuesday lecture this week: Covers Lab 7 material on bipolar junction transistors, the emitter follower and the common emitter amplifier.
  3. Lectures will cover digital logic.
  4. See also the Hints tab for useful instructions on producing better Mathematica data and theory plots.
Suggested reading (Week 9):
  1. Fischer-Cripps chapters 11 (digital electronics).
  2. H&H Chapter 8. Everything in this chapter is good to know about but sections 8.01, 8.02, 8.04, 8.07-8.10, 8.12, 8.16 are most relevant. Also have a look at section 5.14 on the 555 timer chip.
  3. As a preview for next week's microcontroller lab, take a look at the Arduino website http://www.arduino.cc
Items to turn in (Week 9):
  1. Lab 9 prelab problems to the D2L dropbox. Due lab day by 1PM.
  2. Lab 8 report to the D2L dropbox. Due lab day by 2PM.

Week 8

  1. Lab 8 "Field effect transistor and noise" is the lab for this week.
  2. UNEXPECTED POP-QUIZ in Tuesday lecture this week: Covers Lab 5 and Lab 6 material, especially negative and positive feedback, and transimpedance op-amp amplifiers.
  3. Lectures will cover FETs and noise.
  4. See also the Hints tab for useful instructions on producing better Mathematica data and theory plots.
Suggested reading (Week 8):
  1. Fischer-Cripps chapters 8 (field effect transistors).
  2. Sections 3.01-3.10 of H&H introduce FETs and analog FET circuits. You might find that this is more than you want or need to know about FETs. Amplifier and resistor noise is discussed in H&H sections 7.11-7.22.
  3. A data sheet for the 2N4416A field effect transistor is posted on our course web site under the Useful Documents tab.
Items to turn in (Week 8):
  1. Lab 8 prelab problems to the D2L dropbox. Due lab day by 1PM.
  2. Lab 7 report to the D2L dropbox. Due lab day by 2PM.

Week 7

  1. Lab 7 "Bipolar transistor amplifiers" is the lab for this week.
  2. UNEXPECTED POP-QUIZ in Tuesday lecture this week: Covers Lab 4 material, especially op-amp golden rules, op-amp limitations and finite frequency behavior, and negative feedback amplifiers.
  3. Lectures will cover transistor amplifiers.
  4. See also the Hints tab for useful instructions on producing better Mathematica data and theory plots.
Suggested reading (Week 7):
  1. Fischer-Cripps chapters 5 (bipolar junction transistors) & 6 (common emitter amplifier).
  2. Horowitz and Hill, Chapter 2. The most important sections are 2.01–2.03, 2.05, the first page of 2.06, 2.07, 2.09–2.12, and the part of 2.13 on page 84 and 85. Have a look at Table 2.1 and Figure 2.78 for a summary of the specifications of some real devices.
  3. A data sheet for the 2N3904 transistor is posted on our course web site under the Useful Documents tab.
Items to turn in (Week 7):
  1. Lab 7 prelab problems to the D2L dropbox. Due lab day by 1PM.
  2. Lab 6 report to the D2L dropbox. Due lab day by 2PM.

Week 6

  1. Lab 6 "Photometer and optical link" is the lab for this week.
  2. UNEXPECTED POP-QUIZ in lecture this week: Covers Lab 2 and 3 material, especially generalized voltage dividers, Thevenin and Norton equivalents, and square wave response.
  3. Lectures will cover diodes, photodiodes, and will begin transistor amplifiers.
  4. See also the Hints tab for useful instructions on producing better Mathematica data and theory plots.
Suggested reading (Week 6):
  1. Fischer-Cripps Chapter 4 (diodes), particularly Sections 4.18 & 4.19.
  2. Horowitz and Hill, general opto-electronics information, Section 9.10. For a general discussion of lock-in detection, see H&H Section 15.15.
  3. Before this lab, it helps to understand how a lock-in amplifier works. A nice description can be found here: http://www.thinksrs.com/downloads/PDFs/ApplicationNotes/AboutLIAs.pdf. Quick start instructions on using our SR510 Lock-in amplifiers are here, and also are found under the Hints tab.
  4. Finally, Lab 6 asks you to determine mean values and uncertainties, to plot data with error bars, and to analyse your data with a Mathematica fit. All these topics are covered under the Hints tab. Go there and read about plotting with error bars and fitting data.
Items to turn in (Week 6):
  1. Lab 6 prelab problems to the D2L dropbox. Due lab day by 1PM.
  2. Lab 5 report to the D2L dropbox. Due lab day by 2PM.

Week 5

  1. Lab 5 "Positive feedback and oscillators" is the lab for this week.
  2. Lectures will cover op-amps with general impedances for feedback, positive feedback, stability and Schmitt triggers.
  3. See also the Hints tab for useful instructions on producing better Mathematica data and theory plots.
Suggested reading (Week 5):
  1. Fischer-Cripps Sections 12.2 – 12.15.
  2. Horowitz and Hill, Section 5.12 to 5.19. If you are designing a circuit and want to include an oscillator, look here for advice. Amplifier stability is discussed in Sections 4.33-4.34.
Items to turn in (Week 5):
  1. Lab 5 prelab problems to the D2L dropbox. Due lab day by 1PM.
  2. Lab 4 report to the D2L dropbox. Due lab day by 2PM.

Week 4

  1. Lab 4 "Operational amplifiers and negative feedback" is the lab for this week.
  2. Lectures will cover op-amps and how to use them to make a variety of useful circuits.
Suggested reading (Week 4):
  1. Fischer-Cripps Sections 12.2 – 12.15.
  2. H&H Chapter 4.
Items to turn in (Week 4):
  1. Lab 4 prelab problems to the D2L dropbox. Due lab day by 1PM.
  2. Lab 3 report to the D2L dropbox. Due lab day by 2PM.

Week 3

  1. Lab 3 "Filters and waveform shaping" is the lab for this week.
  2. Lectures will cover transfer functions and their display in Bode plots, decibels, and why we use them.
  3. In the lab sections we will also have a look at Mathematica Activity 2. This activity requires that we bring some data from the scope to your computer. The Activity writeup includes instructions for the Rigol scopes we use in the Advanced Lab course, but you will be using your Tek TDS 3014B scopes. Each of these scopes can talk directly to the printer in the lab and to any computer that has a web browser. You should follow the instructions found under the 'Hints' tab to install the eScope web package (available under the "Useful docs" tab) on your laptop and bring your laptop to lab to retrieve scope data. It's very useful to be able to read in data from your scope, so keep at it. However, if you find that you are genuinely stuck without the ability to get data from your scope, here is a text file with some sample data that you can use: scope_sample_data.txt
Suggested reading (Week 3):
  1. Fischer-Cripps Sections 3.4-3.18 (ac circuits), 10.1-10.6 (square wave response)
  2. H&H Chapter 1, especially sections 1.13-1.24. You will make frequent use of the last topic in Section 1.18, "Voltage Dividers Generalized." Appendix A on oscilloscope probes.
Items to turn in (Week 3):
  1. Lab 3 prelab problems to the D2L dropbox. Due lab day by 1PM.
  2. Lab 2 report to the D2L dropbox. Due lab day by 2PM.
  3. Mathematica Activity 2. Turn in your Mathematica notebook to the dropbox in D2L by Friday 1PM.

Week 2

  1. Lab 2 "DC Measurements, voltage dividers, and bridges" is the lab for this week.
  2. Lectures continue with the ideas of frequency dependent impedance, transfer functions, Thevenin and Norton Equivalents.
  3. In the lab sections we will also have a look at Mathematica Activity 2. This activity requires that we bring some data from the scope to your computer. The Activity writeup includes instructions for the Rigol scopes we use in the Advanced Lab course, but you will be using your Tek TDS 3014B scopes. Each of these scopes can talk directly to the printer in the lab and to any computer that has a web browser. You should follow the instructions found under the 'Useful docs' tab to install the eScope web package on your laptop and bring your laptop to lab to retrieve scope data.
Suggested reading (Week 2):
  1. Fischer-Cripps Sections 1.9 (Resistivity), 1.11 (Resistor circuits), 2.4 & 2.5 (Thevenin's theorem)
  2. H&H Sections 1.03, 1.04, 1.05
Items to turn in (Week 2):
  1. Lab 1 prelab problems to the D2L dropbox. Due Tuesday afternoon by 1PM.
  2. Mathematica Activity 1. Turn in your Mathematica notebook to the dropbox in D2L by Tuesday 1PM.
  3. Lab 2 Prelab Problems. Due by 1PM on your lab day.

Bring your laptop to lecture and lab.

If you have a laptop, please bring it to lecture Tuesday 1-1:50P. On it, you should install:

  1. Mathematica You can get it for free at the OIT Mathematica Download Site.

Week 1

Lectures will be in Duane G2B-41 on both Tuesday and Thursday 1:00-1:50P. First laboratory sessions meet on Tuesday Jan. 15 and Thursday Jan. 17 2:00-4:50P. In lecture we will be doing group activities to bring everyone up to speed on using Mathematica to handle data sets and to do plotting of data and associated theory. In laboratory we will start the first Lab, getting yourselves up to speed on using the oscilloscope, waveform generators, power supplies, and using your electronics breadboards.

About the Junior Laboratory Course

The Junior Laboratory provides students with an opportunity to learn about the design, construction, and operation of electronic circuits.

The Junior Laboratory course has two phases. The first phase consists of 10 weeks of pre-designed experiments that cover important topics in analog (Week 1-8) and digital (Week 9 and 10) electronics. A written report follows the completion of each experiment. About mid-semester, students individually or in small teams begin to conceive of independent electronics projects. This project is the focus of the second phase, beginning in early April. The instructors make every effort to support original and creative projects. At the end of the semester, the student submits an extended project report and also gives a short oral presentation.