| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inverter circuit by which a variation in input current is effectively reduced without using a large-capacity capacitor, and a photovoltaic generator. <P>SOLUTION: Either of a transistor Q<SB>31</SB>and a transistor Q<SB>32</SB>is switched on and another is switched off according to the polarity of an AC current i<SB>ac</SB>. In a first mode, either of a transistor Q<SB>1</SB>and a transistor Q<SB>2</SB>is switched on according to the polarity of the AC current i<SB>ac</SB>, to make an exciting current flow to a transformer TR. In a second mode, when the on-state transistor is switched off, the current generated by exciting energy accumulated in the transformer TR is outputted from a secondary winding via a diode D<SB>31</SB>or a diode D<SB>32</SB>. When the exciting energy is exhausted and the current is cut off, the on- state diode is switched off. The first and second modes are repeated by a high frequency, and the low-frequency AC current i<SB>ac</SB>is outputted. <P>COPYRIGHT: (C)2004,JPO |
