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How to Evaluate the Root Mean Square of a Sawtooth Wave

A sawtooth wave is a curve that consists of a cyclical gradual rise in a value, followed by a sudden drop. It is technically a curve, even though it has only straight lines. A sawtooth wave has an amplitude (the distance from top to bottom) and a period (the distance between one peak and the next one). A root mean square is a measure of the variation in a curve.

Instructions

    • 1

      Draw a horizontal line from one peak of the waveform to the "y" axis and note the value where the line crosses the axis.

    • 2

      Draw a horizontal line from the bottom of one cycle of the waveform to the "y" axis and note the value where the line crosses the axis.

    • 3

      Subtract the value in Step 2 from the value in Step 1. This is the amplitude.

    • 4

      Divide this value by the square root of 3 (approximately 1.73). This is the root mean square of the waveform.

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