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How to Measure the Time Constant with an Oscilloscope

And more fun with RC circuits and RL circuits
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Measuring the time constant with an oscilloscope is easy. Simply make a quick calculation and a cursor measurement. To measure the time constant of an RC circuit or an RL circuit with an oscilloscope, pick two reference points on an edge of your signal and see how long it takes to grow/decay 63.2%.

Graphics credit:
CyrilB~commonswiki assumed. Own work assumed (based on copyright claims). CC BY-SA 3.0
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