An oscilloscope is an instrument that graphs voltages over time. Engineers and technicians use them to check voltage signals, especially ones that repeat too rapidly to measure with a simple voltmeter.
In this activity, you will:
- Use an oscilloscope to graph the LED voltages over time.
- Examine how changing the duty cycle “looks” in an oscilloscope voltage vs. time graph.
- Use the Time/Div control to “zoom in” on the time axis to see more voltage “signal detail.”
Parts & Circuit
Same as Measure a Blinking Light with a Voltmeter (shown again below.)