単相全波整流回路の平均直流電圧
負荷の平均電圧を $E_{d}$ とすると,純負荷抵抗の場合は,\[\begin{eqnarray}E_{d}&=&\frac{1}{\pi}\int_{\alpha}^{\pi}\sqrt{2}E\sin\theta d \theta\\&=&\frac{2\sqrt{2}}{\pi}E\frac{1+\cos\alpha}{2}\\&=&0.9E\frac{1+\cos\alpha}{2}\quad[\textrm{V}]\end{eqnarray}\]となる.
Mathematics is the language with which God has written the universe.