Theory and calculation of alternating current phenomena . er-nating wave, that is, the wave whose true arithmetic mean value= 0. Frequently, hy mean value of an alternating wave, the averageof one half-wave only is denoted, or rather the average of allinstantaneous values without regard to their sign. This meanvalue of one half-wave is of importance mainly in the rectifica- INSTANTANEOUS AND INTEGRAL VALUES tion of alternating , since it determines the unidirectionalvalue derived therefrom. 10. In a sine wave, the relation of the mean to the maximumvalue is found in the following wa
Theory and calculation of alternating current phenomena . er-nating wave, that is, the wave whose true arithmetic mean value= 0. Frequently, hy mean value of an alternating wave, the averageof one half-wave only is denoted, or rather the average of allinstantaneous values without regard to their sign. This meanvalue of one half-wave is of importance mainly in the rectifica- INSTANTANEOUS AND INTEGRAL VALUES tion of alternating , since it determines the unidirectionalvalue derived therefrom. 10. In a sine wave, the relation of the mean to the maximumvalue is found in the following way: Let, in Fig. 6, AOB represent a quadrant of acircle willi radius 1. TT Then, while the angle 9 traverses the arc ^ from A to B, thesine varies from 0 to OB = 1. Hence the average variation of TT the sine bears to that of the corresponding arc the ratio 1 -^ ,., 2or —- 1. The maxinunu variation of the sine takes place about TT its zero value, where the sine is e(iual to the arc. Hence themaximum variation of the sine is equal to the variation of theed5theorycalcula00steiuoft. 40
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectriccurrentsalte
