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Power Supply and Multimeter

Page history last edited by David S 14 years ago

Assignment

Complete the following exercises using the power supply and multimeter at your lab station.

1. Power Supply

You will use the power supply in future labs, such as to power your LED in Lab 2, so turn it on, familiarize yourself with the control panel, and confirm that you can set the voltage to 3.3V and 5V. You can turn it off now.

2. Multimeter

A multimeter combines several measurement functions into a single device. These typically include voltage (V), current (A) and resistance (Ohm, often indicated by an Omega). Multimeters are useful for diagnosing circuits and for identifying components such as resistors, batteries and motors.

To gain experience with your lab multimeter, pick up a random resistor from a TA. You can identify resistor values by reading the color bands on their bodies. Look at this resistor color code guide and identify the resistor that you have. Now place it on the table, turn on your multimeter and set the meter to measure resistance. Touch the red and black probes to the leads on opposing sides of the resistor body and confirm that you have the resistor that you think you do. Do the indicated and measured values match exactly? Why might they differ? Please put the resistor back where it belongs.