Sine waves quantities

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Last updated 12:13 PM on 1/17/25
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11 Terms

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Sine Wave

A sinusoidal waveshape used to represent one cycle of an alternating voltage or current.

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Amplitude

The peak value of an alternating signal; for example, a peak amplitude of 10V means the signal can vary from +10V to -10V.

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Mean Value

The average level of a sinusoidal waveshape, calculated as the area above the mean line equals the area below.

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RMS (Root Mean Square)

The square root of the mean of squared values, representing the effective value of an alternating signal.

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Peak to Peak Value

The total voltage difference between the highest and lowest points of a sine wave.

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Frequency

The number of cycles a signal completes in one second, measured in Hertz (Hz).

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Periodic Time

The time it takes to complete one full cycle of a wave, inversely related to frequency.

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Peak Value

Half of the peak to peak value; the maximum displacement from the equilibrium position.

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Average Value

The mean of a sine wave, which is 63.6% of the peak value.

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Equation for Frequency

Frequency can be calculated using the formula: f = 1/t, where t is the periodic time.

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RMS Value of Sine Wave

The RMS value is 70.7% (0.707) of the peak value.