ELEC 101, Spring 2001
Prof. Rich Kozick

Laboratory 1
Basic Electrical Quantities and Measuring Voltage

This lab session provides an introduction to three fundamental electrical quantities: charge, current, and voltage. We will also learn how to measure voltages with the Fluke Hydra data acquisition unit (DAU) and the oscilloscope. We will use an interactive computer program (and electronic lesson or E-lesson) developed by Professor Mastascusa so that you can explore these topics at your own pace. You are encouraged to revisit the E-lessons throughout this course!

Start the E-lesson Exploring Electrical Engineering on the PC at your lab bench as follows. First, set up the monitor options through the display control panel.

Then you can run the E-lessons as follows.

Perform the following activities.

  1. Under the menu items Basic Concepts and Quantities, go through the lessons on Charge, Current, and Voltage. Please do some of the exercises given in the lessons - you don't have to do them all now. Before moving on to item 2, provide brief explanations to the lab instructor for charge, current, and voltage. That is, be sure to understand the meaning of each of these fundamental quantities are before moving on!

    You will also read about charge, current, and voltage in Chapter 1 of the text. You do not have to record anything in your lab notebooks for this part.

  2. Do the lesson on Measuring Voltages, which you can get to by Basic-Concepts->Measurements->Voltage. This lesson will teach you how to use the Fluke Hydra data acquisition unit (DAU). We will use the DAU to make voltage and other measurements throughout this course. The lesson also explains the wiring of your protoboard. Complete the exercises in this lesson up to and including the lesson on "Measuring Voltage with a Power Supply." Omit any exercises using the A/D board. Also omit the exercise titled "Various Sensors."


  3. Please measure the voltage differences between the various wires on the power supply in your lab kit. Determine which wires correspond to +12 V, -12 V, +5 V, and Ground. Record the results in your lab notebook for future reference.

  4. Complete the exercises in "An Introduction to Using an Oscilloscope" up to first exercise on the page titled "Simple Oscilloscope Experiments-4. "

  5. Feel free to browse other E-lessons in the Exploring Electrical Engineering tutorial to get an idea which topics are included. However, you do not have to do any other lessons for this week.

  6. You are free to use the EE laboratory at any time to work on lab projects. The combination to the door lock will be given to you during the lab session.

Thank you, and have fun!