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Definition of "Cycle" |
The change in an alternating electrical sine wave from zero to a positive peak to zero to a negative peak and back to zero. / One complete positive and one complete negative alternation of a current or voltage. A 360-degree rotation of a vector generating a sine wave. A cycle is measured in Hertz, Hz. / In Alternating current, the change of the poles from negative to positive and back. / One of a series of repeated changes in the magnitude of a periodically varying quantity, such as current or voltage. / The time of activation of a device or system that is one complete movement from the start position to an extreme position and back to the original position. / Pulse Duration Modulation. PDM is a modulation technique that conforms the width of the pulse, formally the pulse duration, based on modulator signal information. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. / when a repeating wave rises from zero to a positive maximum then back to zero and on to a negative maximum and back to zero it is said to have completed one cycle. |
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