| 摘要 |
PURPOSE:To eliminate a changeover switch and a circuit for controlling the switch by alternately displacing the timing to share the positive polarity of a sinusoidal AC output by one of two sets of inverters and the negative polarity by the other. CONSTITUTION:Two sets of inverters #1, #2 for sharing the positive and negative polarities of sinusoidal AC output are prepared, the timings of the operations are displaced, and the pulse trains of positive and negative polarity components to be output are alternately fed through an AC filter 7 to form a series of sinusoidal AC. Thus, a changeover switch and a circuit for controlling the switch can be eliminated. Since two inverters are provided, an AC power source of large capacity can be formed. |
