29 lines
803 B
Plaintext
29 lines
803 B
Plaintext
= AC =
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Ac or alternating current is type of power delivery via electricty in which
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the voltage is oscilated, usually using some form of sin wave.
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== Power delivery ==
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Power delivery is difficult to calculate for AC in comparison to DC. For DC,
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the power delivery is calculated via
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`P = E^2 / R`
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For AC, however, we substitute E with the root mean square (RMS)
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=== RMS ===
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The RMS can be any value for different waves, however for the most common type
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of wave, the sin wave, we can simply *multiply the peak voltage by 0.707*.
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For example
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Sin wave with a peak voltage of 17V has an RMS of 0.717 * 17 = 12V
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To convert from the Power delivery of an AC line back to the peak power, simply
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multiply the value by 1.414. For example
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A 120V AC power line has a peak voltage of 120 * 1.414 = 169.7V
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